FindLaw - Sale Agreement - Controls and Communications Ltd., The Racal Corp., Racal Electronics PLC and Global Crossing Ltd.

                                                                CONFORMED COPY


DATED                        10     OCTOBER                            1999





                      Controls and Communications Limited                  (1)


                             The Racal Corporation                         (2)


                             Racal Electronics plc                         (3)


                             Global Crossing Ltd.                          (4)








        _______________________________________________________________


                                SALE AGREEMENT

        _______________________________________________________________


                             Lovell White Durrant
                              65 Holborn Viaduct
                                London EC1A 2DY












                                   CONTENTS

Clause                                                                    Page



1.       INTERPRETATION                                                      1

2.       CONDITIONS                                                          2

3.       SALE AND PURCHASE OF SHARES                                         4

4.       CONSIDERATION AND INTER-COMPANY DEBT                                5

5.       PRE-COMPLETION CONDUCT AND TERMINATION RIGHTS                       6

6.       NET ASSET ADJUSTMENT                                                7

7.       COMPLETION                                                          8

8.       WARRANTIES                                                         11

9.       LIMITATION OF CLAIMS                                               13

10.      INDEMNITIES                                                        19

11.      PENSIONS                                                           20

12.      NAME AND USE OF MARKS                                              20

13.      PROPERTY REORGANISATION                                            21

14.      NOT USED                                                           24

15.      PARENT GUARANTEE                                                   24

16.      GENERAL                                                            25

17.      CONFIDENTIAL INFORMATION                                           30

18.      GOVERNING LAW AND JURISDICTION                                     31

SCHEDULE I                                                                  33
         The Parties                                                        33

SCHEDULE II                                                                 34
         Definitions                                                        34



SCHEDULE III                                                                49
         Transfer Conditions                                                49

SCHEDULE IV                                                                 51
         Telecom Group                                                      51

SCHEDULE V                                                                  52
         Completion Balance Sheet                                           52
                 Part A                                                     52
                 Part B                                                     56

SCHEDULE VI                                                                 57
         Covenants and Warranties                                           57
                 Part A                                                     57
                 Part B                                                     58
                 Part C                                                     78

SCHEDULE VII                                                                80
         Pension Arrangements                                               80
                 PART A                                                     80
                 PART B                                                     81
                 PART C                                                    101

SCHEDULE VIII                                                              116
         Telecom Group Guarantees of Racal Group Members                   116

SCHEDULE IX                                                                117
         Tax Covenant and Warranties                                       117
                 Part A                                                    117
                 Part B - Tax Covenant                                     122

SCHEDULE X                                                                 144
         Conduct between exchange and completion                           144

SCHEDULE XI                                                                148
         Property Reorganisation                                           148
                 Part A:  leasehold properties to be assigned to RTL       148
                 Part B:  leasehold properties to be assigned to RPL
                          and to be sublet to RTL                          149
                 Part C:  leasehold properties to be sublet to RTL         150

SCHEDULE XII                                                               153
         Outstanding Negotiations                                          153
                 Part A                                                    153
                 Engrossments or Equivalent                                153
                 Part B                                                    156
                 Proposed Transactions                                     156



AGREED FORM DOCUMENTS                              Party Responsible

Base Line Balance Sheet                                     (LWD)
Data Room Index                                             (LWD)
Powers of Attorney                                          (LWD)
Trade Mark Licence                                          (LWD)
Transitional Services Agreement                             (LWD)
Letter of resignation for directors and secretary           (LWD)
FIRPTA Notice to IRS pursuant to Treas.
Reg.Sec.1.897-2(h)(2)                                       (LWD)
FIRPTA Statement of Racal USA to Global                     (LWD)
Reorganisation Documents                                    (LWD)
Adjusting Principles                                        (LWD)
Carve-Out Accounts                                          (LWD)


                                                                CONFORMED COPY

                                SALE AGREEMENT

THIS AGREEMENT is made 10 October 1999.

BETWEEN:

(1)  Controls and Communications Limited (registered number 314979) whose
     details are set out in Schedule I;

(2)  The Racal Corporation (registered number 59-1785-1646) whose details are
     set out in Schedule I;

(3)  Racal Electronics Plc (registered number 497098) whose details are set
     out in Schedule I ("Racal"); and

(4)  Global Crossing Ltd. a company registered in Bermuda whose details are
     set out in Schedule I ("Global").


WHEREAS:

(A)  The Sellers are the beneficial owners and the registered holders of
     those numbers of the Shares set opposite their respective names in
     Schedule IV.

(B)  The Sellers have agreed to sell and Global has agreed to purchase all
     the Shares on and subject to the terms of this Agreement.

(C)  In consideration of Global entering into this Agreement at the request
     of the Guarantor, the Guarantor has agreed to guarantee the obligations
     of Controls and Communications Limited and The Racal Corporation under
     this Agreement.



IT IS AGREED:

1.   INTERPRETATION

     1.1  In this Agreement (including the Schedules), except so far as the
          context otherwise requires, words and expressions shall have the
          meanings set out in Schedule II.



     1.2  In this Agreement, unless otherwise specified:

          (a)  references to clauses, subclauses, paragraphs, subparagraphs 
               and schedules are to clauses, subclauses, paragraphs and 
               subparagraphs of, and schedules in, this Agreement;

          (b)  headings to clauses and schedules are for convenience only 
               and do not affect the interpretation of this Agreement;

          (c)  references to a "company" shall be construed so as to include 
               any company, corporation or other body corporate, wherever 
               and however incorporated or established;

          (d)  references to a "person" shall be construed so as to include 
               any individual, firm, company, government, state or agency of 
               a state, local or municipal authority or government body or 
               any joint venture, association or partnership (whether or not 
               having separate legal personality);

          (e)  a reference to any statute or statutory provision shall be 
               construed as a reference to the same as it may have been amended,
               modified or re-enacted; 

          (f)  references to times of the day are to London time;

          (g)  references to the one gender include all genders, and references 
               to the singular include the plural and vice versa; and

          (h)  references to "material to the business of the Telecom Group" 
               shall be read as a reference to matters which are material to 
               the operation and conduct of the business of the Telecom Group 
               taken as a whole.

     1.3  The Recitals and Schedules to this Agreement form part of it.


2.   CONDITIONS

     2.1  Completion is conditional on the satisfaction (or where
          permissible, waiver) of the Transfer Conditions set out in Schedule
          III and the provisions of this clause 2.



                                      -2-



     2.2  In the event that this Agreement has been terminated in accordance
          with either clause 2.10 or clause 2.11 this Agreement shall on the
          date of termination be of no further force and effect except that
          this clause and clauses 1, 16, 17 and 18 shall continue in force
          and such termination of this Agreement shall not affect the rights
          of any parties for prior breaches of this Agreement.

     2.3  The Sellers shall use all reasonable endeavours to procure the
          satisfaction of the Transfer Conditions set out in paragraphs 1, 2,
          3 and 5 of Schedule III as soon as practicable and will on request
          keep Global informed with respect to progress in that regard.

     2.4  Global shall use all reasonable endeavours to procure the
          satisfaction of the Transfer Conditions set out in paragraphs 4 and
          5 of Schedule III as soon as practicable and will on request keep
          the Sellers informed with respect to progress in that regard.

     2.5  The parties shall as soon as reasonably practicable provide all
          information and assistance reasonably requested by any of them in
          respect of action which is required or desirable in respect of the
          satisfaction of the Transfer Conditions and shall not take any
          steps which might prejudice or might reasonably be expected to
          prejudice the satisfaction of the Transfer Conditions.  If Global
          shall not within 10 Business Days of the date of this Agreement
          make the filing which it must make to obtain the consents set out
          as paragraphs 4 and 5 of the Transfer Conditions for any reason
          other than Racal failing to provide Global with the information
          necessary for it to make the necessary filing, such conditions
          shall lapse and be treated as waived.

     2.6  At any time Global may waive the Transfer Conditions set out in
          paragraphs 2, 3, 4 and 5 of Schedule III by notice to the Sellers.

     2.7  The rights and obligations of the parties set out in Clauses 2.3 to
          2.6 shall:

          (a)  not oblige any of the relevant parties to waive any of the
               Transfer Conditions; and

          (b)  (in relation to each party's obligations) be subject to the
               directors of Racal not thereby being in breach of their 
               fiduciary duties which shall without limitation, be construed 
               as obliging the directors of Racal to make a recommendation or 
               not to withdraw their recommendation to their shareholders (or 
               any class of their shareholders) to vote in favour of the 
               Transaction (or any part of it) if, acting in good faith, 
               such directors resolve that such recommendation would not be 


                                      -3-



          in the best interests of Racal and/or its shareholders.

     2.8  If the Transfer Condition set out in paragraph 4 of Schedule III is
          the only Transfer Condition which has not been satisfied by the
          Long Stop Date or has become incapable of satisfaction in
          circumstances where the other Transfer Conditions have been
          satisfied or waived, the parties shall complete the sale and
          purchase of the Shares after taking such appropriate steps as they
          shall reasonably agree are necessary with regard to the assets or
          revenues which give rise to the need for the German Clearance such
          that the Agreement can be completed without the need for German
          Clearance.  If the parties are unable to agree any other way of
          dealing with the matter Racal shall retain the relevant assets or
          revenues and operate them for the benefit of Global.

     2.9  NOT USED

     2.10 Subject to clause 2.8, if any of the Transfer Conditions becomes
          incapable of satisfaction or has not been satisfied by the Long
          Stop Date, Global may on that date or at any time thereafter by
          notice to the Sellers terminate this Agreement, in which case the
          provisions of clause 2.2 shall apply.

     2.11 Subject to clause 2.8, if any of the Transfer Conditions becomes
          incapable of satisfaction or has not been satisfied by the Long
          Stop Date, Racal (acting on behalf of the Sellers) may on that date
          or at any time thereafter by notice to Global terminate this
          Agreement, in which case the provisions of clause 2.2 shall apply.


3.   SALE AND PURCHASE OF SHARES

     3.1  On and subject to the terms of this Agreement, the Sellers shall
          sell with full title guarantee the Shares set opposite their
          respective names in Schedule IV to Global and Global shall purchase
          all the Shares on Completion, in each case free from all charges,
          liens, equities, encumbrances, claims or restrictions whatsoever
          and together with all rights which are now, or at any time
          hereafter may become, attached to them (including without
          limitation the right to receive all dividends and distributions
          declared, made or paid on or after Completion).

     3.2  Global covenants to procure that its wholly owned subsidiary Global
          Crossing Holdings Ltd advances the monies it draws down under the
          Goldman Sachs Facility to fund the acquisition of the Shares.


                                      -4-



     3.3  Global shall not be obliged to complete the purchase of any of the
          Shares unless the sale to it of all the Shares is completed
          simultaneously and if such sale is not completed on the Completion
          Date then Global shall be entitled to rescind this Agreement
          without liability of any kind on its part, but without prejudice to
          its rights in respect of any pre-existing breach of the terms
          hereof, including any breach giving rise to such right to rescind.

     3.4  The Sellers agree to waive any rights which may have been conferred
          on them under the Articles of Association or other constitutional
          documents of each Telecom Group member whose shares are to be sold
          pursuant to clause 3.1 or otherwise or in any other way to have any
          of the Shares offered to them for purchase at any time on or before
          the transfer of the Shares pursuant to the provisions of this
          Agreement.

4.   CONSIDERATION AND INTER-COMPANY DEBT

     4.1  Prior to Completion (and not less than three Business Days prior
          thereto), Racal will notify Global of its estimate of the
          Inter-Company Net Debt plus the Finance Lease Net Debt at
          Completion.

     4.2  At Completion the parties will co-operate to ensure the discharge
          of all Inter-Company Net Debt and, in particular, Global will
          advance to such members of the Telecom Group as Racal may require
          such amounts as Racal may require (which in aggregate may not
          exceed the estimate for Inter-Company Net Debt given under clause
          4.1) to put such members in funds to permit such discharge.

     4.3  On Completion, Global shall pay to the Sellers the amount of (Pound
          Sterling)1,000,000,000 (less the amount of the Inter-Company Net
          Debt and the Finance Lease Net Debt estimated under clause 4.1)
          together with the sum of (Pound Sterling)2,100,000 in respect of
          RTL of which (Pound Sterling)10,000,000 shall be payable to The
          Racal Corporation in respect of the shares in Racal USA, and (Pound
          Sterling)10,000,000 shall be payable to Controls and Communications
          Limited in respect of the Shares in RISL the balance to be divided
          among the Sellers in the following proportions:

          (a)  60% to Racal in respect of the shares in RTL; and

          (b)  40% to Racal in respect of shares in RTNL.

     4.4  To the extent that at Completion any sum is paid by a company to
          another company under clause 4.2 in excess of the amount due, the
          excess shall be repaid.  If as a result the amount advanced by

                                      -5-



          Global under clause 4.2 is different from the amount necessary to
          discharge all Inter-Company Net Debt, the difference shall be paid
          by Global to (if it advanced insufficient sums), or to Global (if
          it has advanced too much) by, the relevant member of the Telecom
          Group.  In addition, the purchase price under clause 4.3 shall be
          adjusted upwards (if net sums are repaid to Global) or downwards
          (if net sums are payable by Global) but so that the aggregate of
          sums paid by Global under this clause 4 to the Sellers and by way
          of settlement of the Inter-Company Net Debt by members of the
          Telecom Group (as adjusted under clause 4.4) shall always be the
          sum of (Pound Sterling)1,000,000,000 less the Finance Lease Net
          Debt at Completion.
  
     4.5  Any Inter-Company Trading Debt and Inter-Company Trading
          Receivables shall be paid by or to members of the Telecom Group to
          or from all other members of the Racal Group on the date that such
          would have been paid in the ordinary course of business.

5.   PRE-COMPLETION CONDUCT AND TERMINATION RIGHTS

     5.1  Save as provided in this Agreement or otherwise with the express
          prior consent of Global, the Sellers agree that between the date of
          this Agreement and Completion, they shall procure that the Telecom
          Group shall continue to conduct its business in the ordinary course
          and shall comply with the provisions of Schedule X and shall notify
          Global immediately if they become aware of a fact or circumstance
          which constitutes a breach of Schedule X.

     5.2  The Agreement may be terminated at any time prior to Completion by
          notice:

          (a)  by Racal (acting on behalf of the Sellers) if Global is in
               material breach of its obligations under this Agreement and
               such breach has not been remedied within 10 Business Days of
               notice of such breach having been given to Global; or

          (b)  by Global on notice to the Sellers: 

               (i)  if the board of directors of Racal withdraws or
                    materially amends its recommendation of the Transaction;
                    or

               (ii) if the Sellers are in material breach or breaches of
                    their obligations which taken together are material in
                    the context of this Agreement (other than their
                    obligations under clause 8 to which sub-clause (iii)
                    below applies) under this Agreement and such breach has

                                      -6-



                    not been remedied within 10 Business Days of notice of
                    such breach having been given to the Sellers; or

               (iii)pursuant to clause 8.12.

     5.3  If this Agreement is terminated prior to Completion in accordance
          with clause 5.2 each party's further rights and obligations cease
          immediately on termination, except that termination does not affect
          a party's accrued rights and obligations at the date of termination
          and the provisions of clauses 1, 16, 17 and 18 shall remain in full
          force and effect. 

     5.4  No party shall have the right to terminate or rescind this
          Agreement after Completion or save as provided in clauses 2.7, 2.8,
          3.3, 7.9, 7.12, 8.12 or this clause 5.

     5.5  On or before Completion, Racal may procure the payment of a
          dividend by RTL to its shareholders  (the "Pre Completion
          Dividend") less than RTL's distributable reserves.  Before the
          declaration of the dividend Racal shall produce to Global accounts
          of RTL which demonstrate to Racal's satisfaction that such dividend
          is lawful.

     5.6  No earlier than 5 Business Days prior to Completion, Racal may
          shorten any existing financial period of all members of the Telecom
          Group to the same date.  Racal shall ensure that Global is given
          prior notice of such closure and the date selected.

6.   NET ASSET ADJUSTMENT

     6.1  From Completion, the parties shall give effect to Schedule V to
          agree or determine the amount of the Completion Net Assets and
          Finance Lease Net Debt at Completion.

     6.2  If the aggregate of the Completion Net Assets at Completion exceeds
          (Pound Sterling)220,365,000, Global shall pay to the Sellers an
          amount equal to the excess to be divided amongst the Sellers as
          Racal and Global may agree (or failing agreement as Racal may
          specify) as additional consideration for the shares sold by each
          such Seller.

     6.3  If the amount of the Completion Net Assets is less than (Pound
          Sterling)220,365,000, the Sellers shall pay to Global an amount
          equal to the amount by which the Completion Net Assets are less
          than (Pound Sterling)220,365,000 as a reduction in the
          consideration for the shares sold by each Seller to be apportioned

                                      -7-



          amongst the Sellers as Racal and Global may agree (or failing
          agreement as Racal may specify).

     6.4  If the amount of estimated Finance Lease Net Debt pursuant to
          clause 4.1 is less than the Finance Lease Net Debt at Completion as
          determined in accordance with Schedule V, the Sellers shall
          promptly pay to Global an amount equal to the amount by which the
          Finance Lease Net Debt exceeds the estimated Finance Lease Net Debt
          as a reduction in the consideration for the shares sold by each
          Seller.

     6.5  If the amount of estimated Finance Lease Net Debt pursuant to
          clause 4.1 is greater than the Finance Lease Net Debt at Completion
          as determined in accordance with Schedule V, Global shall promptly
          pay to the Sellers an amount equal to the amount by which the
          estimated Finance Lease Net Debt exceeds the Finance Lease Net Debt
          as additional consideration for the shares sold by each Seller.

     6.6  All payments hereunder shall be made within five Business Days
          after the agreement or determination of the amount of the
          Completion Net Assets.

     6.7  Any amount to be paid under clause 6.3 shall bear interest at one
          per cent over the base lending rate of Barclays Bank PLC from the
          Completion Date. 

7.   COMPLETION

     7.1  Completion shall take place at the offices of Racal's Solicitors
          within 5 Business Days of satisfaction or, where permitted, waiver
          of the Transfer Conditions  or at such other place and/or on such
          other date as may be agreed between the parties. 

     7.2  On Completion, the Sellers shall have delivered to Global a
          certificate in Agreed Form duly executed certifying any facts that
          would exempt the transactions contemplated hereby from withholding
          pursuant to Section 1445 of the Internal Revenue Code of 1986.

     7.3  On Completion the Sellers shall cause to be delivered to Global
          duly executed transfers of the Shares in favour of Global (or as
          it may direct) together with the share certificates relating to
          such shares.

     7.4  On Completion, the Sellers shall cause to be delivered to Global: 

          (a)  the Common Seal and Statutory Books of each Telecom Group
               member made up to the Completion Date and each certificate of
               incorporation and certificate of incorporation on change of
               name for each Telecom UK Group member;

                                      -8-



          (b)  (unless otherwise agreed by Global) an unqualified letter of
               resignation from the auditors of each Telecom UK Group member
               complying in all respects with the requirements of section 392
               Companies Act 1985 and, if there are any such auditors, an
               unqualified letter of resignation from the auditors of Racal
               USA, in each case, accompanied by a written confirmation that
               such auditors have no claims for unpaid fees or expenses;

          (c)  irrevocable powers of attorney in the Agreed Form executed by
               Racal in respect of Racal Telecom UK Group Shares and the
               Racal USA Shares in favour of Global appointing Global to be
               its lawful attorney in respect of the Shares;

          (d)  resignations in the Agreed Form from each director and
               secretary of each Telecom Group member expressed to take
               effect from the end of the meeting held pursuant to
               clause 7.5; and

          (e)  receipts for any sums advanced to or repaid by the Racal Group
               under clause 4.2 which shall be sufficient evidence of the
               discharge of such sums by the relevant Racal Group Company.

     7.5  On Completion the Sellers shall cause a board meeting of each
          Telecom Group member to be duly convened and held at which:

          (a)  the transfers of the Shares shall be approved for registration
               (subject only to their being duly stamped by, and at the cost
               of, Global);

          (b)  such persons as may be nominated by Global shall be appointed
               directors and secretary of the Telecom Group members (within
               the maximum number, if any, permitted under their respective
               constitutional documents);

          (c)  all existing instructions to the Telecom Group's bankers, bank
               mandate forms and authorities shall be revoked and shall be
               replaced with alternative instructions, bank mandates forms
               and authorities in such form as Global may require;

          (d)  the registered offices of each of the Telecom Group members
               shall be changed to places nominated by Global;

          (e)  subject to the Companies Act, the accounting reference dates
               of each of the Telecom Group members shall be changed to dates
               nominated by Global; and




                                      -9-



          (f)  the resignations of each director and secretary of each of the
               Telecom Group members shall be accepted so as to take effect
               from the end of the meeting.

     7.6  On Completion Racal shall deliver to Global the Trade Mark Licence
          and the Transitional Services Agreement executed by it and the
          Transitional Services Agreement executed by Racal Services
          (Communications) Ltd and RTL.

     7.7  On Completion Global shall deliver to Racal the Transitional
          Services Agreement executed by it. 

     7.8  On Completion, Global shall also:

          (a)  deliver to Racal the Trade Mark Licence executed by it; and

          (b)  pay or procure the payment of the Consideration to the Sellers
               in accordance with the instructions provided by the Sellers at
               least 2 Business Days prior to Completion provided that Global
               shall not be required to transfer funds to more than four
               accounts in total in the United Kingdom.

     7.9  (a)  Neither Global nor the Sellers are obliged to complete this
               Agreement unless the other complies with all its obligations
               under clause 7; and

          (b)  Global shall not be obliged to complete this Agreement unless
               the transfer of all the Shares is completed simultaneously.

     7.10 If Completion does not take place on the date set for Completion
          because the Sellers fail to comply with any of their obligations
          under clauses 7.3, 7.4 or 7.5 or Racal fails to comply with its
          obligations under clause 7.6 or if Global fails to comply with any
          of its obligations under clauses 7.7 or 7.8 Global may, if the
          Sellers have failed so to comply, or Racal (acting on behalf of the
          Sellers) if Global has failed so to comply by notice to the other
          parties:

          (a)  proceed to Completion to the greatest extent reasonably
               possible without limiting its rights under this Agreement;

          (b)  postpone Completion to 2 Business Days after the date set for
               Completion; or

          (c)  terminate this Agreement.



                                     -10-



     7.11 If any party postpones Completion to another date in accordance
          with clause 7.10 the provisions of this Agreement apply as if that
          other date is the date set for Completion.

     7.12 If Completion has not occurred by the fifth Business Day after the
          Long Stop Date any party may on that date or at any time thereafter
          by notice to the other terminate this Agreement, in which case it
          shall on that date be of no further force and effect except that
          clauses 1, 16, 17 and 18 shall continue in force and such
          termination of this Agreement shall not affect the rights of any
          parties/or prior breaches of this Agreement.


8.   WARRANTIES

     8.1  The Sellers hereby represent and warrant to Global in the terms of
          the Warranties.

     8.2  The Warranties are qualified to the extent but only to the extent
          of the facts and circumstances fairly disclosed in the Disclosure
          Letter.

     8.3  The Sellers undertake not to make any claim against a Telecom Group
          member or a director, officer or employee of a Telecom Group member
          which it may have in respect of (or seek to mitigate damages
          payable in respect of any claim made against the Sellers by Global
          by reference to) a misrepresentation, inaccuracy or omission in or
          from information or advice provided by the Telecom Group member or
          a director, officer, agent, adviser or employee of a Telecom Group
          member for the purpose of assisting the Sellers to make a
          representation, give a Warranty, enter into this Agreement or
          prepare the Disclosure Letter unless such representation,
          inaccuracy or omission was wilful.

     8.4  Each Warranty is to be construed independently and (except where
          this Agreement provides otherwise) is not limited by a provision of
          this Agreement, the Tax Covenant or another Warranty and Global
          shall have a separate Claim and right of action in respect of every
          breach of each such Warranty.

     8.5  Global confirms that it has not entered into this Agreement or any
          document entered into hereunder or referred to herein in reliance
          upon any representation, warranty or undertaking other than those
          expressly contained herein and acknowledges that it has not relied
          on, and will make no claim in respect of any such representation,
          warranty or undertaking made or supplied by or on behalf of the
          Sellers, Racal or any other person whatsoever which is not

                                     -11-



          contained herein.  Without limiting the general nature of the
          foregoing, Global confirms that it has not relied on and will make
          no claim against the Sellers, Racal or any other person whatsoever
          in respect of any budget, forecast or other projection of any
          nature made or supplied by or on behalf of any person.

     8.6  Racal and the Sellers acknowledge that Global has relied upon the
          Warranties in entering into this Agreement.

     8.7  Where any of the Warranties is expressed to be given or made to the
          best of the Sellers'  knowledge or is qualified by reference to the
          Sellers' awareness or is qualified in some other manner having
          substantially the same effect, such statement shall be deemed to be
          qualified by the additional statement that the knowledge of the
          Sellers shall be limited to the actual knowledge of the person
          listed in Part C of Schedule VI in relation to the Warranties set
          out in Schedule VI  against such person, such person having made
          reasonable diligent enquiry of other employees of the Racal Group
          in relation to the subject matter of the warranty in question.

     8.8  The provisions of Schedule VI, Part A shall have effect.

     8.9  Between the date of this Agreement and Completion, the Sellers
          shall notify Global in writing as soon as reasonably practicable
          after they become aware of a fact or circumstance which constitutes
          or which might constitute a breach of clause 8.1 or 8.13 together
          with the Sellers' best estimate of the amount of the liability. 
          The Sellers shall ensure that notification of each fact or
          circumstance which constitutes or might constitute a breach of
          clause 8.1 or 8.13 shall be given not less than two Business Days
          before Completion.

     8.10 (a) Any provision of this Agreement and agreements, certificates or
          other instruments delivered pursuant to this Agreement which is
          capable of being performed after but which has not been performed
          at or before Completion, and (b) all representations, warranties,
          covenants, indemnities, agreements and other undertakings contained
          in this Agreement, and in any agreements, certificates or other
          instruments delivered pursuant to this Agreement, shall survive and
          not be affected by Completion and shall remain in full force and
          effect.

     8.11 The Sellers shall ensure that (save if and insofar as may be
          necessary to give effect to this Agreement) neither they nor any
          member of the Telecom Group will cause or permit anything to be
          done or omitted to be done either before or at Completion which
          would constitute a material breach of any of the Warranties if

                                     -12-



          given at any time up to Completion or which would make any of the
          Warranties materially inaccurate or materially misleading if they
          were so given.

     8.12 If Global has or would have at Completion a claim or claims against
          the Sellers in aggregate of more than (Pound Sterling)75 million
          which have arisen at or prior to Completion, Global may terminate
          this Agreement by notice to the Sellers given at or before
          Completion but for the avoidance of doubt, in the event that Global
          terminates this Agreement, Global shall have no right to claim
          damages or any other remedy against any of the Sellers in respect
          of all or any part of such claim or claims other than pursuant to
          clause 16.12. If Global does not terminate this Agreement pursuant
          to this clause 8.12, Global may, subject to clause 9, claim damages
          against the Sellers and exercise any other right, power or remedy
          arising under this Agreement in respect of a claim or claims which
          have arisen at or before Completion including such claim or claims
          arising from a breach of Warranty had such Warranty been repeated
          at Completion.

     8.13 The Warranties shall be deemed to be given at the date of this
          Agreement and to be repeated (mutatis mutandis) at Completion (save
          that references to any fact, matter or thing existing, occurring or
          having occurred at or before the date of this Agreement shall be
          construed as references to at or before Completion).


9.   LIMITATION OF CLAIMS

     9.1  Global shall, on becoming aware of  any Claim, promptly notify
          Racal and the Sellers thereof, but the failure to so notify shall
          not relieve the Sellers of any liability they may have to Global to
          the extent such failure does not materially prejudice any of the
          Sellers.

     9.2  The Sellers shall have no liability in respect of any Claim unless
          Global has served on the Sellers notice on or before:

          (a)  in the case of a Claim under the Tax Warranties or a claim
               under the Tax Covenant relating to Racal USA, the expiration
               of the statute of limitation relating to the relevant Tax
               liability of Racal USA;

          (b)  in the case of any Claim under the Tax Warranties or a claim
               under the Tax Covenant other than as described in paragraph
               (a) above, six years from the Completion Date;


                                     -13-



          (c)  in the case of any Claim other than a Claim under the Tax
               Warranties or a claim under the Tax Covenant, the later of (i)
               the second anniversary of the Completion Date and (ii) the end
               of the fourth month following the end of the second audited
               financial period for each member of the Telecom Group,

          giving such reasonable details of the Claim as Global then has and, 
          if practicable, including Global's then best estimate of the amount 
          of the liability of the Sellers in respect thereof, has as soon as 
          reasonably practicable upon receipt of any further details relating 
          to the Claim disclosed such further details to Racal and has issued 
          and served proceedings in respect thereof within nine months of the 
          date of such written notice if such Claim has not previously been 
          satisfied, settled or withdrawn.

     9.3  No claim shall be made against any of the Sellers in respect of any
          Claim unless the Claim (or series of related Claims) individually 
          exceeds (Pound Sterling)250,000 and unless the aggregate amount of
          all Claims (excluding individual Claims of (Pound Sterling)250,000
          or less) exceeds (Pound Sterling)10,000,000 PROVIDED that if such
          aggregate amount does exceed (Pound Sterling)10,000,000, the
          Sellers shall be liable for the full amount of such Claim or Claims
          and not solely the amounts thereof in excess of (Pound
          Sterling)10,000,000.  For the purpose of determining whether a
          Claim exceeds the minimum individual threshold of (Pound
          Sterling)250,000 set out in this clause 9.3, Claims which consist
          of a breach of paragraph L.12 of Schedule VI and which arise from
          the unlawful exclusion (prior to the Completion Date) on grounds of
          sex of an employee or former employee of the Telecom UK Group from
          eligibility for, and/or membership of, Racal's Schemes (as defined
          in Part B of Schedule VII) ("Pensions Claims") shall be aggregated
          and treated as a single Claim.  Any recovery in respect of Pensions
          Claims shall be on an indemnity basis on the excess over (Pound
          Sterling)250,000.  Nothing in the Disclosure Letter shall be deemed
          to be disclosed for this purpose in respect of Pensions Claims
          unless individual claimants are specifically identified.

     9.4  The total amount of the liability of the Sellers in aggregate in
          respect of:

          (a)  the aggregate amount of Claims arising from clause 3.1, Part A
               of Schedule VI, clause 5.1, clause 6, clause 10.1 and (in so
               far as it relates to any of the foregoing provisions) clause
               15 and any claim arising from the Tax Covenant and any claim
               referred to in clause 9.4(b) shall be limited to and in no
               event exceed (Pound Sterling)1,000,000,000; and


                                     -14-



          (b)  the aggregate amount of Claims and claims under clauses 10.2,
               10.3 and 10.5 shall be limited to and in no event exceed
               (Pound Sterling)300 million, 

          PROVIDED THAT the total amount of liability of the Sellers in 
          aggregate in respect of the Claims whether arising under paragraph 
          (a) or paragraph (b) of this clause 9.4 shall not in any 
          circumstance exceed the Consideration.

     9.5  The Sellers shall not be liable in respect of any Claim (including
          any claim under the Tax Covenant) if and to the extent that the
          loss occasioned thereby has been recovered under any other Claim
          (including any claim under the Tax Covenant).

     9.6  If the Sellers indemnify Global and/or the relevant Telecom Group
          member in respect of any amount payable by Global and/or any
          Telecom Group member by way of settlement, judgment or award in
          respect of the matter giving rise to the Claim, then insofar as the
          same would not have a detrimental effect on the business of any
          member of the Global Group, the Sellers shall be afforded every
          reasonable opportunity of resisting in the name of the relevant
          Telecom Group member any claims against any Telecom Group member
          which might constitute a breach of any of the Warranties (unless
          the claims against any Telecom Group member which might constitute
          a breach of any of the Warranties is by any member of the Racal
          Group), and the Sellers shall subject as aforesaid (if they so
          require) be allowed to have the conduct of any negotiations,
          proceedings or appeals incidental thereto (keeping Global at all
          reasonable times properly informed of the conduct) and to use
          professional advisers approved by Global (such approval not to be
          unreasonably withheld or delayed).  If  such legal advisers are
          retained, the Sellers shall not be liable to Global for any legal
          expenses of other legal advisers or any other expenses subsequently
          incurred by Global in connection with the defence of the claim,
          except that if the Sellers elect not to assume such defence or if
          legal advisers for  Global determine that there are issues which
          raise conflicts of interest between Global and the Sellers, Global
          and any Telecom Group member may retain legal advisers reasonably
          satisfactory to them, and the Sellers shall pay any reasonable fees
          and expenses of such legal advisers for Global and such members
          promptly as statements therefor are received; PROVIDED THAT the
          Sellers shall be obligated pursuant to this clause 9.6:(i) to pay
          such amounts in the case of a conflict of interest only if the
          Sellers reasonably agree that such conflict of interest existed
          between Global and the Sellers, and (ii) to pay for only one firm
          of legal advisers for Global and the Telecom Group members in any
          jurisdiction unless Global and the Sellers agree that the use of

                                     -15-



          one firm of legal advisers would present such legal advisers with a
          conflict of interest.

     9.7  If and so long as Racal exercises its rights under clause 9.6,
          Global shall, and shall procure that the relevant Telecom Group
          member shall:

          (a)  consult with the Sellers in respect of the circumstances
               giving rise to such claim, and thereafter keep the Sellers as
               informed as is reasonably practicable of all material
               developments relating to such circumstances and Claim;

          (b)  if so requested by the Sellers, subject as aforesaid, take all
               reasonable steps or proceedings as the Sellers may consider
               necessary in order to mitigate or defend any such claim and
               any adjudication in respect thereof or enforce against any
               person (other than Racal or any other member of  the Racal
               Group) the rights of the relevant Telecom Group member and
               Global in relation to the matter the subject of the claim and
               shall procure that any Telecom Group member shall act in
               accordance with any such requirements, and for this purpose
               take all appropriate proceedings in the name of the relevant
               Telecom Group member subject to being fully indemnified in
               advance by the Sellers against all costs and expenses incurred
               in connection therewith;

          (c)  at all reasonable times allow the Sellers and its agents
               reasonable access on notice to personnel of the relevant
               Telecom Group member and to inspect and take copies of all
               necessary books, correspondence and records of the relevant
               Telecom Group member which are relevant to such Claim and are
               within the power, possession or control of Global or any
               member of the Telecom Group to enable the Sellers to
               investigate the Claim (subject always to keeping the same
               confidential other than necessary disclosures in connection
               with any such action or claim); and

          (d)  save with the Sellers' prior consent, and subject as
               aforesaid, not admit liability in respect of or compromise, or
               settle any such claims as aforesaid.

     9.8  Any settlement agreed by the Sellers pursuant to clause 9.6 shall
          not include any obligation on Global or a Telecom Group member to
          take or omit to take any action.

     9.9  The Sellers shall reimburse to Global or the relevant Telecom Group
          member (as the case may be) all costs, charges, liabilities,


                                     -16-



          damages and expenses incurred by them by Global's complying with
          its obligations under paragraphs 9.6 and 9.7.

     9.10 The Sellers shall not be liable in respect of a Claim to the
          extent:

          (a)  that any amount has been included as a liability or a proper
               provision has been made in respect thereof; or

          (b)  that the value of any asset has been reduced to take account
               of the subject matter of such Claim, 

          in the Accounts of RTNL and RISL or the Completion Balance Sheet. 

     9.11 Where Global or any Telecom Group member is entitled to recover
          from some other person any sum in respect of any matter or event
          which has given rise to a Claim, Global shall and shall procure
          that the relevant Telecom Group member shall use its or his
          reasonable endeavours to recover that sum and any sum recovered
          will reduce the amount of the relevant Claim provided that the
          person so entitled shall not be obliged hereby to use such
          reasonable endeavours if so to do would have a detrimental effect
          on the business of any member of the Global Group but in such
          circumstances the parties agree that the decision by Global not to
          recover any such sum shall be relevant in considering whether its
          obligations to mitigate have been satisfied.

     9.12 Other than on the proof of fraud which is material in the context
          of the Transaction, Global shall not be entitled to rescind or
          repudiate this Agreement for any reason after Completion.

     9.13 The Sellers shall not be liable in respect of any Claim arising
          from any matters resulting from a change of accounting policy or
          practice or the length of any accounting period of Global or any
          Global Group member introduced after Completion.

     9.14 If Racal pays to Global or any Telecom Group member an amount in
          respect of any Claim and Global or any Telecom Group member (as the
          case may be) subsequently actually recovers from a third party
          (including any insurer) a sum which is directly referable to that
          Claim, Global shall repay to Racal as soon as reasonably
          practicable so much of the amount paid by Racal as does not exceed
          the Sum Recovered from the third party.  Global agrees to take all
          reasonable steps to recover any such sum from a third party as soon
          as reasonably practicable on the basis set out in clause 9.8.  For
          the purpose of this clause "Sum Recovered" means an amount equal to
          the amount recovered from such third party minus (a) any increase
          in liability to tax of a Telecom Group member and (b) the

                                     -17-



          reasonable costs and expenses incurred by the Telecom Group member
          in recovering such amount.  Nothing herein shall preclude Global
          from making a Claim for recovery of that portion of any increased
          insurance premium that are fairly attributable to Claims previously
          made hereunder whether or not such Claim is made within the period
          specified in clause 9.2.

     9.15 Nothing contained in this clause 9 shall limit Global's obligations
          or the obligation of any Telecom Group member at common law to
          mitigate any loss or damage resulting from or arising as a
          consequence of any circumstances giving rise to any Claim.

     9.16 Global acknowledges and confirms that at the time of entering into
          this Agreement it is not aware of any Claim which would arise on
          execution of this Agreement.

     9.17 If Global makes any Claim or gives notice of any Claim to Racal
          Global shall, and shall procure that any Telecom Group member shall
          promptly, on a confidential basis solely for the purpose of
          enabling Racal to assess the Claim or potential Claim:

          (a)  make available on reasonable notice to Racal and its
               representatives or advisers such reasonable access to the
               personnel of any relevant Telecom Group member and to any
               relevant records and information as Racal may request in
               connection with such Claim or potential Claim; and

          (b)  use all their endeavours to procure that the auditors (past
               and present) of any relevant Telecom Group member make
               available their audit working papers in respect of audits of
               the relevant Telecom Group member's accounts for any relevant
               accounting period in connection with such Claim or potential
               Claim, 

          in all cases, subject always to keeping the same and any information 
          obtained herefrom confidential.

     9.18 Notwithstanding any limitation in this clause 9 to the contrary, no
          claim by Global which arises by reason of any fraudulent act,
          fraudulent omission or fraudulent misrepresentation of or by any of
          the Sellers which is material in the context of the Transaction
          shall be subject to the limitations of this clause 9.

     9.19 If the Sellers or any of its successors or assigns (i) shall
          consolidate with or merge into any other corporation or entity and
          shall not be the continuing or surviving corporation or entity of
          such consolidation or merger or (ii) shall transfer all or
          substantially all of its properties and assets to any individual,
          corporation or other entity, then and in each such case, Racal or

                                     -18-



          its successors or assigns (on the case may be) shall use all
          reasonable endeavours to procure that the successors and assigns of
          the surviving corporation shall assume all of its obligations
          hereunder.


10.  INDEMNITIES

     10.1 The Sellers hereby undertake to procure that, as from Completion,
          the Telecom Group members shall be released at Completion or as
          soon as is reasonably practicable thereafter from all guarantees,
          indemnities and other actual or contingent obligations and/or
          comfort letters given or undertaken by them in respect of any and
          all actual or contingent liabilities whatsoever of any Racal Group
          member (including without limitation those specified in Schedule
          VIII) and pending such release, the Sellers shall indemnify and
          keep indemnified each Telecom Group member against any liability
          whatsoever, including all costs, damages and expenses, suffered or
          incurred by any of them in connection therewith.

     10.2 The Sellers agree to indemnify Global against all liabilities,
          losses, damages, costs and expenses (whether incurred before or
          after Completion) arising from the failure of RISL to obtain or
          maintain a registration under the Data Protection Act 1984.

     10.3 Racal agrees to indemnify Global and RTL against any cost, loss,
          claim, liability or expense arising primarily by reason of
          Railtrack PLC being entitled or having the right to terminate any
          of the Railtrack Agreements on the grounds that the Reorganisation
          and/or this Agreement involves a breach of any provision of the
          Railtrack Agreements prohibiting assignments if and only to the
          extent that such costs, losses, claims, liabilities or expenses
          exceed in the aggregate (Pound Sterling)10,000,000, provided that:

          (a)  Global shall be obliged to take all reasonable steps to
               mitigate such costs, losses, claims, liabilities or expenses
               and the extent of Racal's liability shall take account of
               savings and reduced expenditure resulting as a consequence of
               the termination of any of the Railtrack Agreements; and

          (b)  any claim hereunder must be made within two years of
               Completion.

     10.4 If Global becomes aware of any claim under clauses 10.2, 10.3 and
          10.5 it shall notify Racal as soon as practicable and shall consult
          with, and pay due regard to, Racal's views on all matters relating


                                     -19-



          thereto, giving Racal all reasonable information about such claim
          as Racal shall request.

     10.5 Racal agrees to indemnify Global and RTL for any cost, loss, claim,
          liability or expense (whether incurred before or after Completion)
          arising from the termination of the agreement with Metromedia Fiber
          Network Services Inc. referred to in B(d) of Schedule X.

     10.6 If Railtrack plc terminates the Railtrack Agreements on the grounds
          that the Reorganisation and/or this Agreement involves a breach of
          any provision of the Railtrack Agreements prohibiting assignments
          Racal agrees that BRTH or any other member of the Racal Group shall
          have no claims for termination of the Reorganisation Documents by
          RTL.


11.  PENSIONS

     The provisions of Schedule VII shall have effect in relation to the
     retirement, pension and life assurance rights and benefits enjoyed by
     the present and former employees of the Telecom Group.


12.  NAME AND USE OF MARKS

     12.1 Global agrees that the Telecom Group members will:

          (a)  (save as provided in the Trade Mark Licence) as soon as
               reasonably practicable following Completion if any of the
               Racal Marks are being used in their respective corporate names
               or as part of a business or trading name or domain name,
               change the same to a name which does not include any of the
               Racal Marks (or any mark which is confusingly similar with any
               of the Racal Marks); and

          (b)  as soon as reasonably practicable following the Completion
               Date and in any event no later than six months after the
               Completion Date, delete or remove the Racal Marks from all
               stationery, advertising material, labels, manuals, packaging,
               stocks of products and all other materials or documents in the
               possession or under the control of the Telecom Group on which
               the Racal Marks are incorporated and remove all fascia,
               hoardings and the like bearing or referring to the Racal
               Marks.

     12.2 On and with effect from Completion Racal and Global shall enter
          into the Trade Mark Licence.

                                     -20-



13.  PROPERTY REORGANISATION

     For the purposes of this clause 13, "Properties" shall mean the
     properties used by members of the Telecom Group (including without
     limitation wayleaves and easements but excluding the land over, through
     or under which the wayleave or easement passes) brief particulars of
     which are set out in the Data Room Index but in all cases excluding the
     Telecommunications Apparatus as defined in the Telecommunications Act
     1984.

     13.1 Applications for Reversioner's Consent

          (a)  Subject to Racal obtaining the Consents Racal shall procure the 
               carrying out and implementation of the Property Reorganisation 
               and shall use all reasonable endeavours to obtain the Consents 
               before or as soon as practicable following Completion and for 
               that purpose Racal, RPL or RTL (as the case may be) shall
               reasonably and promptly provide such information and assistance 
               and enter into and execute such documents as may be properly 
               required by the relevant Reversioner in relation to the grant 
               of its Consent (including where required under the terms of the
               relevant lease an authorised guarantee agreement) and shall 
               keep Global fully informed of progress in relation to the 
               applications for Consent.

          (b)  Racal shall supply Global's Property Solicitors with a copy of 
               any draft Consent as soon as received from the relevant 
               Reversioner's Solicitors.  Global's Property Solicitors shall 
               forthwith return it to Racal approved subject to any amendments 
               they may reasonably require.

          (c)  Racal shall forthwith return the amended draft Consent to the 
               relevant Reversioner's Solicitors and supply to Global's 
               Property Solicitors copies of any further correspondence or 
               further drafts of the Consent received from the Reversioner's 
               Solicitor and these provisions shall continue to apply until
               all relevant parties have agreed the form and context of each 
               relevant Consent.

          (d)  The proposed assignee or proposed underlessee shall in each 
               case where properly required enter into direct covenants with 
               the relevant Reversioner as from the date of the assurance to

                                     -21-



               pay the rents reserved by the relevant lease and perform and
               observe the covenants on the part of the lessee therein 
               contained.

          (e)  The proposed assignee or proposed underlessee where applicable 
               and any guarantor shall promptly on being supplied with an 
               engrossment of the agreed form of Consent execute the same as 
               a deed and return it unconditionally to Racal.

          (f)  Racal shall continue to use all reasonable endeavours to obtain 
               the Consents including if necessary making application to a 
               court of competent jurisdiction for a declaration to the effect 
               that Consent is being unreasonably withheld in the event that 
               any application for Consent is refused or is not granted within 
               a reasonable period of time (unless counsel of at least five 
               years' call and suitably experienced in such matters advises 
               Racal in writing that such application has no reasonable
               prospect of success and copy of such advice is given to Global's 
               Solicitors) and in such circumstances Global is to co-operate 
               with Racal and provide such information as may be required by 
               Racal in making such an application.

          (g)  Racal shall bear all costs and disbursements of all third party 
               lessors and their professional advisers in relation to the 
               obtaining of the Consents but not the stamp duty and Land 
               Registry fees in connection with the Property Reorganisation 
               which shall be borne by Global.

          (h)  Racal shall not be obliged under the above provisions to 
               guarantee as a condition of any of the Consents the performance 
               of the obligations of RPL or RTL.

     13.2 Licence to Occupy

          The proposed assignee or proposed underlessee shall between
          Completion and completion of the relevant assignment sublease or
          licence be entitled to occupy the relevant leasehold premises or part
          thereof upon the terms and subject to the obligations and covenants
          referred to and contained in Schedules XI and XII and otherwise upon
          the terms of the existing lease.



                                     -22-



     13.3 No variations or amendments to existing terms

          Neither Racal, RPL or RTL shall vary or amend or agree or apply to
          vary or amend any terms under which the Properties are held
          (including any review of rent) except as may be necessary to obtain
          the Consents (and with the prior consent of Global) or apply for any
          consent or approval under the relevant lease (other than the
          Consents) or serve any notices or counter notices or commence any
          proceedings under the Landlord and Tenant Act 1954 without the prior
          consent of Global such consent not to be unreasonably withheld or
          delayed.

     13.4 Outstanding Negotiations

          Racal shall until Completion use all reasonable endeavours to
          diligently pursue all Outstanding Negotiations at the request and
          under the direction of Global and shall keep Global fully informed of
          all progress and provide copies of all communications in respect of
          the same but Racal shall not be obliged to conclude any of the
          Outstanding Negotiations referred to in Schedule XII Part B unless
          Global has confirmed in terms satisfactory to Racal that Global will
          indemnify Racal in relation to such matters.

     13.5 Enforcement of Covenants

          Racal or RPL (as the case may be) shall at the request of  Global but
          at the cost of Racal enforce the covenants on the part of the
          relevant Reversioner contained in any relevant lease so far as may be
          necessary to obtain the Consents.
 
     13.6 Refusal of Consents

          If any of the Consents required in respect of the proposed
          sublettings or licences referred to in Schedule XI Part A is not
          obtained or if for any other reason RPL (or any company authorised by
          RPL under the terms of this agreement to occupy the whole or part of
          the relevant leasehold property) vacates any part of the leasehold
          properties referred to in that Schedule then Racal shall pay to
          Global and shall indemnify Global fully in respect of all rent and
          other sums which would otherwise have been payable by RPL (or any
          company authorised by RPL under the terms of this agreement to occupy
          the whole or part of the relevant leasehold property) whether to
          Global or to any third party had the said subletting or licence
          continued upon the terms set out in that Schedule until the date on
          which RPL (or any company so authorised) shall vacate the premises in
          question.


                                     -23-



     13.7 Arbitration

          Any disputes in relation to the terms of any sublease or licence
          required to implement the Property Reorganisation shall be referred
          to the decision of a suitably qualified Chartered Surveyor who in
          default of agreement shall be appointed by the President for the time
          being of the Royal Institution of Chartered Surveyors on the
          application of either party and such surveyor shall act as an
          arbitrator in accordance with the Arbitration Act 1996.

14.  NOT USED


15.  PARENT GUARANTEE

     15.1 In consideration of Global entering into this Agreement with the 
          Sellers at the request of Racal, Racal, as primary obligor, hereby 
          irrevocably and unconditionally guarantees to Global the full and 
          complete performance by the Sellers of all their obligations under 
          this Agreement or the Tax Covenant or both and the payment of all 
          sums when due and payable by the Sellers (or any of them) to Global 
          under or pursuant to this Agreement or the Tax Covenant or both and
          agrees to indemnify and keep indemnified Global against all losses 
          and damages sustained by it flowing from any non-payment or default 
          of any kind by the Sellers under or pursuant to the Agreement or the 
          Tax Covenant or both.

     15.2 Racal agrees that if and each time that any of the Sellers fails to 
          make any payment when it is due under or pursuant to this Agreement 
          or the Tax Covenant or both, Racal shall on demand (without requiring 
          Global first to take steps against the Sellers or any other person) 
          pay that amount to Global.

     15.3 The guarantee contained in this clause 15 is a continuing guarantee 
          and shall remain in force until all the obligations of each of the 
          Sellers under this Agreement and the Tax Covenant have been fully 
          performed and all sums payable by each of the Sellers have been 
          fully paid.

     15.4 All payments to be made by Racal shall be made in full without 
          set-off or counterclaim and free and clear of and without any 
          deduction whatsoever except to the extent required by law and if any 
          deduction or withholding must be made by law, Racal will pay that 
          additional amount which is necessary to ensure that Global receives 
          a net amount equal to the full amount which it would have received

                                     -24-



          if the payment had been made without the deduction or withholding.

     15.5 Racal shall pay interest on any amount due under this clause from the 
          date of demand until the date of payment in full as well after as 
          before any judgment) calculated on a daily basis at the rate set 
          out in clause 6.5.

     15.6 Racal's obligations under this clause shall not be affected by any 
          matter or thing which but for this provision might operate to affect 
          or prejudice those obligations including without limitation:

          (a)  any time or indulgence granted to, or composition with, the 
               Sellers or any of them or any other person;

          (b)  the taking, variation, renewal or release of, or neglect to 
               perfect or enforce this Agreement, or any right, guarantee, 
               remedy or security from or against the Sellers or any of them or 
               any other person; or

          (c)  any enforceability or invalidity of any obligation of the 
               Sellers, so that this clause shall be construed as if there were 
               no such unenforceability or invalidity.


16.  GENERAL

     Assignment

     16.1 None of the rights or obligations under this Agreement may be 
          assigned or transferred without the prior written consent of all the 
          other parties save as provided in clause 16.2.

     16.2 No party may assign or transfer a right or obligation under this 
          Agreement, save that Global may assign some or all of its rights 
          under this Agreement:

          (a)  to another member of the Global Group if (i) the assignee 
               enters into a commitment in a form reasonably satisfactory to 
               Racal to be bound by and to perform all outstanding obligations 
               under this Agreement expressed to be obligations of Global and
               (ii) Global shall guarantee the obligations of the assignee in  


                                     -25-



               the same terms as Racal has guaranteed the obligations of the 
               Seller under clause 15; and

          (b)  by way of security to the Security Trustee.

     16.3 Entire agreement

          (a)  This Agreement and the Transaction Documents constitute the 
               whole and only agreement between the parties relating to the 
               matters contemplated hereby.

          (b)  This Agreement supersedes and extinguishes any prior agreements, 
               undertakings, representations, warranties and arrangements of 
               any nature whatsoever, whether or not in writing, relating 
               thereto.

          (c)  Each party acknowledges that in entering into this Agreement 
               and the Transaction Documents or the terms set out in this 
               Agreement it is not relying upon any agreement, undertaking, 
               representation, warranty, promise, assurance or arrangement made 
               or given by any other party or any other person, whether or not
               in writing, at any time before the execution of this Agreement 
               which is not expressly set out herein or therein.

          (d)  None of the parties shall have any right of action against any 
               other party to this Agreement arising out of or in connection 
               with any agreement, undertaking, representation, warranty, 
               promise, assurance or arrangement referred to in clause 16.3(b) 
               or 16.3(c) above (except as provided in clause 16.3(b) or 
               16.3(c) above or in the case of fraud or dishonesty).

     16.4 Notices

          (a)  Any notice, consent or other communication given or made under 
               this Agreement shall be in writing.

          (b)  Any such notice or other communication shall be addressed as 
               provided in clause 16.4(d) and, if so addressed, shall be deemed 
               to have been duly given or made as follows:

               (i)  if sent by personal delivery, upon delivery at the address 
                    of the relevant party if delivered before 3.00 pm on any 

                                     -26-



                    Business Day and, in any other case, at 10.00 am on the 
                    next Business Day;

              (ii)  if sent by first class post (or, if sent overseas, by 
                    airmail), three clear Business Days (or, if sent overseas, 
                    seven Business Days) after the date of posting; and

             (iii)  if sent by facsimile, at the expiration of two hours after 
                    the time of despatch, if despatched before 3.00 pm on any 
                    Business Day and, in any other case, at 10.00 am on the 
                    Business Day following the date of despatch but only if a 
                    confirmation of the receipt by the recipient of the 
                    facsimile appears correctly at the end of the of the
                    sender's facsimile.

          (c)  Any notice or other communication to be given or made under 
               this Agreement, the Tax Covenant or the Transaction Documents 
               by Global to the Sellers shall be deemed to be given or made if 
               given to Racal for itself and on behalf of the Sellers.

          (d)  The relevant addressee, address and facsimile number of each 
               party for the purpose  of this Agreement,subject to clause 
               16.4(c), are those set out in Schedule I.

          (e)  A party shall notify the other parties to this Agreement of a 
               change to its name, relevant addressee, address or facsimile 
               number for the purposes of clause 16.4(d) provided that such
               notification shall only be of effect on:

               (i)  the date specified in the notification as the date on 
                    which the change is to take place; or

               (ii) if no date is specified or the date specified is less than 
                    three clear Business Days after the date on which the 
                    notice is given, the date falling three clear Business Days 
                    after notice of any such change has been given.


                                     -27-



     16.5 Remedies and waivers

          (a)  Subject always to the provision of clause 9, no delay or 
               omission on the part of any party to this Agreement in 
               exercising any right, power or remedy provided by law or 
               under this Agreement shall:

               (i)     impair such right, power or remedy; or

               (ii)    operate as a waiver thereof.

          (b)  The single or partial exercise of any right, power or remedy 
               provided by law or under this Agreement shall not preclude any 
               other or further exercise thereof or the exercise of any 
               other right, power or remedy.

          (c)  The single or partial exercise of any right, power or remedy 
               provided by law or under this Agreement shall not preclude any 
               other or further exercise thereof or the exercise of any other 
               right, power or remedy.

          (d)  The rights, powers and remedies provided in this Agreement are 
               cumulative and not exclusive of any rights, powers and remedies 
               provided by law.

          (e)  No variation of this Agreement shall be effective unless made in 
               writing, signed by or on behalf of the parties and expressed to 
               be such variation.

          (f)  No waiver by any party of any requirement of this Agreement or 
               of any remedy or right under this Agreement shall have effect 
               unless given by notice in writing signed by such party.  No 
               waiver of any particular breach of the provisions of this
               Agreement shall operate as a waiver of any repetition of such 
               breach.

          (g)  Any release, waiver or compromise or any other arrangement which 
               any party may give or enter into with any other party to this 
               Agreement in connection with this Agreement shall not affect 
               any right or remedy of such parties as regards any other party's
               liabilities under or in relation to this Agreement and such other
               party shall continue to be bound by this Agreement as if it 


                                     -28-



               had been the sole contracting party.

     16.6 Invalidity

          If at any time any provision of this Agreement is or becomes illegal,
          invalid or unenforceable in any respect under the law of any
          jurisdiction, that shall not affect or impair:

          (a)  the legality, validity or enforceability in that jurisdiction of 
               any other provision of this Agreement; or

          (b)  the legality, validity or enforceability under the law of any 
               other jurisdiction of that or any other provision of this
               Agreement.

     16.7 NOT USED

     16.8 No partnership

          Nothing in this Agreement and no action taken by the parties pursuant
          to this Agreement shall constitute, or be deemed to constitute, the
          parties as a partnership, association, joint venture or other
          corporate entity.

     16.9 Further assurance

          Each party shall after Completion from time to time on being
          requested to do so by any other party, do or procure the doing of all
          such acts and/or execute or procure the execution of all such
          documents in a form reasonably satisfactory to the requesting party
          and the requested party as is reasonably necessary for giving full
          effect to this Agreement.

    16.10 Announcements and confidentiality

          Any party shall only make an announcement concerning the transactions
          contemplated by this Agreement or any ancillary matter if and to the
          extent required by:

          (a)  law; or

          (b)  any securities exchange or regulatory or governmental body to 
               which such party is subject, wherever situated, including 
               (without limitation) the London Stock Exchange, GNOSTIC, 
               the Securities and Exchange Commission or the Takeover Panel,

                                     -29-



                         
               whether or not the requirement has the force of law;

          provided that any such announcement shall be made only after
          consultation with the other parties and having taken into account
          other reasonable covenants and the party has taken all reasonable
          steps to avoid the disclosure of confidential information.

    16.11 Costs and expenses

          Each party shall pay its own costs and expenses in relation to the
          negotiation, preparation and execution and carrying into effect of
          this Agreement. 

    16.12 Break-Up Fee

          Racal agrees that if this Agreement shall be terminated by Global
          pursuant to clause 5.2(b)(i) or clause 8.12 or, because of the
          failure to satisfy the Transfer Condition set out in paragraph 1 of
          Schedule III, pursuant to Clause 2.7, then Racal shall promptly pay
          to Global an amount equal to (Pound Sterling)10 million.

    16.13 Counterparts

          (a)  This Agreement may be executed in any number of counterparts, 
               and by the parties on separate counterparts, but shall not be 
               effective until each party has executed at least one 
               counterpart.

          (b)  Each counterpart shall constitute an original of this Agreement, 
               but all the counterparts shall together constitute but one and 
               the same instrument.

    16.14 Insurance

          To the extent that, prior to Completion, any of the Telecom Group
          members were reliant on Racal Group reinsurance policies, Racal
          undertakes to ensure that, at the request of the relevant members of
          the Telecom Group (the "Claimants"), it will pursue insurance claims
          under such insurance policies which the Claimant notifies to Racal
          (but at the Claimant's risk and expense) and shall account to the
          Claimant for any net payment received under such insurance policies.






                                     -30-



17.  CONFIDENTIAL INFORMATION

     17.1 Subject to the remainder of this clause 17, Racal undertakes to 
          Global that from the date of this Agreement they shall not and shall 
          procure (or in the case of advisers and agents, use all reasonable 
          endeavours to procure) that no other member of the Racal Group or any 
          director, officer or employee or adviser or agent of the Racal Group 
          shall disclose to any person other than Global or its advisers any
          Confidential Information.

     17.2 Subject to the remainder of this clause 17, Global undertakes to 
          Racal that from the date of this Agreement it shall not and shall 
          procure (or in the case of advisers and agents, use all reasonable 
          endeavours to procure) that no other member of the Global Group or 
          any director, officer or employee or adviser or agent of the Global 
          Group shall disclose to any person any Confidential Information.

     17.3 Clauses 17.1 and 17.2 do not apply to:

          (a)  disclosure of Confidential Information to, or at the request of, 
               a director, officer or employee of Global or Racal or another 
               member of the Global Group or Racal Group or to a director, 
               officer or employee of a Telecom Group member whose function 
               requires him to have the Confidential Information;

          (b)  disclosure of Confidential Information required to be disclosed 
               by law, regulation, any revenue authority, the London Stock 
               Exchange or any other relevant stock exchange or any other 
               regulatory authority;

          (c)  disclosure of Confidential Information to an adviser provided 
               that such adviser shall be made aware of the confidential 
               nature of the information and Racal's obligations under clause 
               17.1 or Global's obligations under clause 17.2; or

          (d)  Confidential Information which becomes publicly known except by 
               breach of clause 17.1 or 17.2.

     17.4 The restrictions contained in this clause 17 shall apply without
          limit in time.





                                     -31-



18.  GOVERNING LAW AND JURISDICTION

     18.1  This Agreement is governed by, and shall be construed in 
           accordance with, the laws of England.

     18.2  Each party submits to the jurisdiction of the English courts for 
           all purposes relating to this Agreement.











































                                     -32-



                                  SCHEDULE I

                                  The Parties



Name            Registered    Registered Office     Addressee/Fax
                Number

Controls and    314979        Western Road,         David Whittaker
Communications                Bracknell,            Fax no:  01251 815 887
Limited                       Berkshire RG12 1RG

The Racal       59-1785-1646                        c/o David Whittaker
Corporation                                         Fax no:  01251 815 887

Racal           497098        Western Road          David Whittaker
Electronics                   Bracknell             Fax No:  01251 815887
Plc                           Berkshire RG12 1RG   

Global          N/A           Wessex House,         James Gordon
Crossing Ltd.                 45 Reid Street        Fax No:
                              Hamilton, Bermuda     (001) 310 385 3700


























                                     -33-



                                  SCHEDULE II


                                  Definitions



"Accounts"                                 the statutory accounts for the
                                           year ended 31 March 1999 for RTL,
                                           RTNL and RISL

"Agreed Form"                              in relation to any document, the
                                           form of that document which has
                                           been agreed by Racal and Global
                                           (subject to such amendments as
                                           Racal and Global may agree, such
                                           agreement not to be unreasonably
                                           withheld or delayed by either
                                           party) and initialled for
                                           identification by or on behalf of
                                           Racal and Global

"Balance Sheet Date"                       23 July 1999

"Base Line Balance Sheet"                  the balance sheet of the Telecom
                                           Group in the Agreed Form at the
                                           Balance Sheet Date

"Board" or "Directors"                     as the context requires, the board
                                           of directors of Racal or the board
                                           of directors of Global

"BRTH"                                     Racal Communications (Services)
                                           Limited formerly known as BRT
                                           Holdings Limited a company
                                           registered in England under No.
                                           3132438

"Business Day"                             a day (other than a Saturday or
                                           Sunday) on which banks are open
                                           for business in London

"Carve-Out Accounts"                       has the meaning given in Schedule
                                           VI Part B (warranty A7)




                                     -34-



"Cash"                                     at the relevant time, the
                                           aggregate amount of cash held by,
                                           and the positive balances standing
                                           to the credit of the bank accounts
                                           of each member of the Telecom
                                           Group

"Claim"                                    any claim arising under this
                                           Agreement or any other document
                                           entered into hereunder or referred
                                           to herein but excluding (unless
                                           otherwise stated) any claim
                                           arising under (i) the Tax
                                           Covenant, (ii) any breach of any
                                           warranty or covenant set forth in
                                           clause 6, clause 10.1, clause 15
                                           (but only insofar as it relates to
                                           any of the foregoing provisions),
                                           (iii) the indemnities under
                                           clauses 10.2, 10.3 and 10.5, (iv)
                                           clause 3.1, (v) Part A of Schedule
                                           VI

"Companies Act"                            the Companies Act 1985, as amended
























                                     -35-



"Competing Transaction"                    any of the following (other than
                                           the transactions contemplated by
                                           this Agreement) involving any
                                           Telecom Group Member:

                                           (i)      any merger, consolidation,
                                                    share exchange, exchange
                                                    offer, business
                                                    combination,
                                                    recapitalisation,
                                                    liquidation, dissolution
                                                    or other similar
                                                    transaction involving such
                                                    person;

                                           (ii)     any sale, lease, exchange,
                                                    mortgage, pledge, transfer
                                                    or other disposition of
                                                    all or substantially all
                                                    of the shares or assets of
                                                    such person;

                                           (iii)    any public announcement of
                                                    a proposal, plan or
                                                    intention to do any of the
                                                    foregoing or any agreement
                                                    to engage in any of the
                                                    foregoing

"Completion"                               completion of the Transaction

"Completion Balance Sheet"                 has the meaning given in Schedule
                                           V

"Completion Date"                          the date on which Completion
                                           occurs

"Completion Net Assets"                    the number in the Completion
                                           Balance Sheet that corresponds to
                                           "Net Assets (Excluding Net Debt)"
                                           ((Pound Sterling)220,365,000) as
                                           at the Base Line Balance Sheet

"Confidential Information"                 all information not publicly
                                           known, insofar as it is used in or
                                           otherwise relates to the business,
                                           customers or financial or other

                                     -36-



                                           affairs of any Telecom Group
                                           member (for the purposes of
                                           clauses 17.1 and 17.3) or any
                                           member of the Racal Group (for the
                                           purposes of clauses 17.2 and
                                           17.3), including, without
                                           limitation, information relating
                                           to:

                                           (a)      the marketing of goods or
                                                    services including,
                                                    without limitation,
                                                    customer names and lists
                                                    and other details of
                                                    customers, sales targets,
                                                    sales statistics, market
                                                    share statistics, prices,
                                                    market research reports
                                                    and surveys, and
                                                    advertising or other
                                                    promotional materials; or

                                           (b)      future projects, business
                                                    development or planning,
                                                    commercial relationships
                                                    and negotiations

"Consents"                                 any approval licence or consent
                                           required from any Reversioner
                                           necessary to effect the Property
                                           Reorganisation and the expression
                                           "Consent" shall include the
                                           execution and completion of any
                                           document required by the relevant
                                           Reversioner for the purpose of or
                                           in connection with the evidencing
                                           of the grant of such approval
                                           licence or consent (whether or not
                                           incorporating other
                                           provisions)

"Consideration"                            the aggregate amount referred to
                                           in clause 4.3 as payable by Global
                                           to the Sellers


                                     -37-



"Covenantor"                               Global and/or Racal

"Data Room"                                the data room containing
                                           information relating to the
                                           Telecom Group located at the
                                           offices of the Racal Solicitors

"Data Room Index"                          the index of documents including
                                           the supplemental index in the
                                           Agreed Form relating to the
                                           information in the Data Room

"Disclosure Letter"                        the letter of the same date as
                                           this Agreement from Racal to
                                           Global referred to in clause 8

"dollars" or "$"                           US dollars

"Encumbrance"                              includes any encumbrance, charge,
                                           debenture, mortgage, pledge, lien,
                                           assignment, hypothecation,
                                           security interest, title
                                           retention, option, claim, right to
                                           acquire, right of possession,
                                           right of pre-emption, restriction
                                           or other security agreement or
                                           arrangement

"Fieldforce"                               the division of Racal Services
                                           (Communications) Ltd whose
                                           principal business as at the date
                                           of this Agreement is the
                                           installation, repair and
                                           maintenance of communications for
                                           the railway's telecommunications
                                           network and related technical
                                           equipment

"Finance Lease Debt"                       at the relevant time, the
                                           aggregate amount payable (whether
                                           or not due and including all
                                           principal, interest, charges, fees
                                           and expenses but excluding
                                           interest charges for future
                                           periods) by RTL to Railtrack plc
                                           under the Finance Lease dated 30
                                           June 1994

                                     -38-



"Finance Lease Net Debt"                   at the relevant time, the Finance
                                           Lease Debt less the Finance Lease
                                           Receivables

"Finance Lease Receivables"                at the relevant time, the
                                           aggregate amount receivable
                                           (whether or not due and including
                                           all principal, interest, charges,
                                           fees and expenses but excluding
                                           interest charges for future
                                           periods) by RTL from BRTH under
                                           the Telecommunications Services
                                           Agreement dated 23 July 1999 or
                                           any other substitute document
                                           envisaged by the Reorganisation
                                           Documents when executed

"Global Auditors"                          Arthur Andersen 

"Global Group"                             Global and its subsidiary
                                           undertakings from time to time

"Global Property Solicitors"               such solicitors as may be
                                           appointed from time to time by
                                           Global in relation to property
                                           matters

"Global Solicitors"                        Simpson Thacher & Bartlett of 99
                                           Bishopsgate, London

"Goldman Sachs Facility"                   the facility envisaged by a letter
                                           dated 8 October 1999 from the
                                           Security Trustee and another to 
                                           Global Crossing Holdings Limited

"Guarantor"                                Racal

"ICTA 1988"                                the Income and Corporation Taxes
                                           Act 1988

"Intellectual Property"                    inventions, patents, trade marks,
                                           service marks, designs (whether
                                           registered or unregistered),
                                           copyrights (including without
                                           limitation, rights in software),
                                           confidential information, know-
                                           how, customer lists, database

                                     -39-



                                           rights, business or trade names,
                                           trading goodwill and all rights
                                           and forms of protection of a
                                           similar nature or having similar
                                           or equivalent effect to any of
                                           these which may exist anywhere in
                                           the world and all applications and
                                           rights to apply for the protection
                                           of, any of the foregoing

"Intellectual Property Rights"             the Intellectual Property which is
                                           owned by Telecom Group members and
                                           which is material to the business
                                           of the Telecom Group details of
                                           which are disclosed in Sections 9,
                                           10, 11 and 12 and Index II.9, 10,
                                           11 and 12 in the Data Room Index

"Inter-Company Debt"                       at the relevant time, the
                                           aggregate amount payable (whether
                                           or not due and including all
                                           principal, interest, charges, fees
                                           and expenses) by members of the
                                           Telecom Group to all other members
                                           of the Racal Group (other than any
                                           other members of the Telecom
                                           Group) in respect of all
                                           borrowings, overdrafts,
                                           intercompany balances and
                                           outstanding indebtedness but
                                           excluding (i) all sums payable in
                                           respect of Inter-Company Trading
                                           Debt; (ii) any amounts payable
                                           under the finance lease) dated 30
                                           June 1994 between RTL and
                                           Railtrack; and (iii) any amounts
                                           payable by members of the Telecom
                                           US Group to members of the Racal
                                           Group

"Inter-Company Net Debt"                   at the relevant time, the amount
                                           of the Inter-Company Debt less the
                                           amount of the Inter-Company
                                           Receivables (which may be a
                                           positive or a negative amount)

"Inter-Company Trading Debt"               at the relevant time, the

                                     -40-



                                           aggregate amount payable (whether
                                           or not due) in the ordinary course
                                           of trading by members of the
                                           Telecom Group to all other members
                                           of the Racal Group (other than any
                                           other members of the Telecom
                                           Group)

"Inter-Company Receivables"               at the relevant time, the
                                           aggregate amount receivable
                                           (whether or not due and including
                                           all principal, interest, charges,
                                           fees and expenses) by members of
                                           the Telecom Group from all other
                                           members of the Racal Group (other
                                           than any other member of the
                                           Telecom Group) in respect of all
                                           borrowings, overdrafts,
                                           intercompany balances and
                                           outstanding indebtedness but
                                           excluding all sums to be received
                                           in respect of Inter-Company
                                           Trading Receivables

"Inter-Company Trading                     at the relevant time, the
Receivables"                               aggregate amount to be received
                                           (whether or not due) in the
                                           ordinary course of trading by
                                           members of the Telecom Group from
                                           all other members of the Racal
                                           Group (other than any other
                                           members of the Telecom Group)

"ION"                                      International Optical Network
                                           L.L.C.

"July Management Accounts"                 the management accounts for the
                                           Telecom UK Group to be prepared in
                                           accordance with Schedule X as at
                                           23 July 1999 which shall include a
                                           profit and loss account for the
                                           period commencing 1 April 1999 and
                                           ending on that date and a balance
                                           sheet as at that date

"London Stock Exchange"                    London Stock Exchange Limited


                                     -41-



"Long Stop Date"                           15 December 1999

"new PTO Licence"                          has the meaning given to it in
                                           paragraph 2 of Schedule III

"non-Railtrack Properties"                 Properties which are not located
                                           on land owned, leased or licenced
                                           by Railtrack plc or any  other 
                                           member of the Railtrack group

"Outstanding Negotiations"                 means the wayleaves, licences and
                                           leases in the process of
                                           negotiation as listed in Schedule
                                           XII Parts A and B

"Pre-Completion Dividend"                  has the meaning given to it in
                                           clause 5.5

"pounds" or "(Pound Sterling)"             UK pounds sterling

"Properties"                               except as defined for clause 13,
                                           the properties which are material
                                           to the business of the Telecom
                                           Group brief particulars of which
                                           are set out in Section 7 and Index
                                           II.7 of the Data Room Index

"Property Owner"                           in respect of each leasehold
                                           property, the person designated as
                                           the "Property Owner" in Schedule
                                           XI

"Property Reorganisation"                  (a)      the assignment to RTL of
                                                    the leasehold properties
                                                    listed in Schedule XI Part
                                                    A (where not already held
                                                    by RTL) and where
                                                    indicated in that part of
                                                    the Schedule the grant of
                                                    a sublease or licence of
                                                    part to RPL for occupation
                                                    by Field Force or
                                                    Translink on the terms set
                                                    out in that part of the
                                                    Schedule and otherwise
                                                    upon the terms of the
                                                    relevant lease; 

                                     -42-



                                           (b)      the assignment to RPL of
                                                    the leasehold properties
                                                    listed in Schedule XI Part
                                                    B and the grant of a
                                                    sublease or licence of 
                                                    part to RTL on the terms
                                                    set out in that part of
                                                    the Schedule; 

                                           (c)      the grant of a licence of
                                                    part of the property
                                                    referred to in Schedule XI
                                                    Part C on the terms set
                                                    out in that part of the
                                                    Schedule;

                                           (d)      the assignment to RTL of
                                                    the leasehold properties
                                                    listed in Schedule XI Part
                                                    D; and

                                           (e)      the assignment to RPL of
                                                    the leasehold property
                                                    listed in Schedule XI Part
                                                    E on the terms set out in
                                                    the Schedule

                                           the circular to be sent to
"Racal Circular"                           shareholders of Racal in relation
                                           to the Transaction pursuant to the
                                           Listing Rule of the London Stock
                                           Exchange

"Railtrack Agreements"                     the Finance Lease Agreement dated
                                           30 June 1994, the Grant of Use
                                           date 30 June 1994, the two Deeds
                                           of Grant dated 2 August 1995, the
                                           Management Agreement dated 31
                                           March 1995 and the National Radio
                                           Network Agreement dated 30 June
                                           1994 in each case entered into
                                           between Railtrack plc and RTL and
                                           all of the above are included at
                                           Section 9.1.1B of the Data Room


                                     -43-



                                           Index as modified, amended or
                                           supplemented from time to time

"Racal Auditors"                           Deloitte & Touche, Hill House, 1
                                           Little New Street, London EC4A 3TR

"Racal EGM"                                the Extraordinary General Meeting
                                           of Racal to be  convened in
                                           connection with the Transaction
                                           and certain steps in relation
                                           thereto, including any adjournment
                                           thereof

"Racal Group"                              Racal and its subsidiary
                                           undertakings from time to time

"Racal Marks"                              the word Racal and any other word
                                           or mark incorporating Racal

"Racal Shareholders"                       holders of Racal Shares

"Racal Solicitors"                         Lovell White Durrant of 65 Holborn
                                           Viaduct, London, EC1A 2DY

"Racal Telecom UK Group Shares"            the shares in RTL, RISL and RTNL
                                           referred to in Schedule IV

"Racal USA"                                Racal Telecommunications, Inc., a
                                           company organised under the laws
                                           of Delaware 

"Racal USA Shares"                         1000 shares of Racal USA, as
                                           specified in Schedule IV

"Reorganisation"                           the reorganisation of the Racal
                                           Group, its successors and assigns,
                                           as effected or to be effected by
                                           the Reorganisation Documents

"Reorganisation Documents"                 each of the reorganisation
                                           agreements in the Agreed Form and
                                           the Intra-Group Business Transfer
                                           Agreement executed on
                                           1 October 1999 between BRTH and
                                           RTL in relation to Fieldforce and
                                           the Intra-Group Business Transfer
                                           Agreement executed on 1 October

                                     -44-



                                           1999 between BRTH and RTL in
                                           relation to Translink

"Reversioner"                              means in respect of each leasehold
                                           property any person entitled to an
                                           interest in reversion (whether
                                           mediate or immediate) whose
                                           consent is necessary to the
                                           assignment or subletting or
                                           licence of any of the leasehold
                                           properties and relevant
                                           Reversioner shall be construed
                                           accordingly

"RISL"                                     Racal Internet Services Limited (a
                                           company registered in England
                                           under No 3231692)

"RPL"                                      Racal Properties Limited

"RTL                                       Racal Telecommunications Limited
                                           (a company registered in England
                                           under No 2089583)

"RTNL"                                     Racal Telecommunications Networks
                                           Limited, (a company registered in
                                           England under No 2089583)

"RTPA"                                     the Restrictive Trade Practice Act
                                           1976

"Security Trustee"                         Goldman Sachs International

"Sellers"                                  Racal, Controls and Communications
                                           Limited and The Racal Corporation

"Shareholder Funds"                        at the relevant time, the sum of
                                           the aggregate amount of issued and
                                           paid up share capital of each
                                           member of the Telecom Group and
                                           all of the   reserves   (whether  
                                           or   not  distributable) standing
                                           to the credit of each member of
                                           the Telecom Group less debit
                                           balances where relevant

"Shares"                                   the shares in the Telecom Group

                                     -45-



                                           listed in Schedule IV

"subsidiary undertaking"                   a subsidiary undertaking as that
                                           term is defined in section 258 of
                                           the Companies Act

"Tax"                                      has the meaning given in the Tax
                                           Covenant

"Tax Covenant"                             the covenant to be given by Racal
                                           to Global set out in Schedule IX

"Tax Warranties"                           means those warranties set out in
                                           Part C of Schedule IX

"Telecom Group" or "Telecom                RTL, RTNL, RISL and Racal USA or
Companies"                                 any one of them as the context
                                           requires and "Telecom Group
                                           member" shall be construed
                                           accordingly

"Telecom Group Shares"                     the Racal USA Shares and the
                                           Telecom UK Group Shares

"Telecom UK Group"                         the Telecom Group (excluding Racal
                                           USA) or any of such companies and
                                           "Telecom UK Group member" shall be
                                           construed accordingly

"Telecom UK Group Shares"                  the shares in the members of the
                                           Telecom UK Group as set out in
                                           Schedule IV

"Telecom US Group"                         Racal USA and ION or either of
                                           them as the context requires

"TCGA"                                     the Taxation of Chargeable Gains
                                           Act 1992

"Trade Mark Licence"                       the licence to use the Racal Marks
                                           in the Agreed Form to be granted
                                           by Racal to Global

"Transaction"                              the transfers by members of the
                                           Racal Group of their interest in
                                           the Telecom Group to Global


                                     -46-



"Transfer Conditions"                      the conditions as described in
                                           Schedule III

"Transaction Documents"                    this Agreement, the Disclosure
                                           Letter, the Trademark Licence and
                                           the Transitional Services
                                           Agreements

"Transitional Services Agreement"          the agreement in Agreed Form
                                           relating to the provision of
                                           services after Completion

"Translink"                                the division of Racal Services
                                           (Communications) Ltd whose
                                           principal business as at the date
                                           of this Agreement is the provision
                                           of infrastructure services,
                                           advanced information systems and
                                           project support for the rail and