VIATEL INC
8-K, 2000-03-14
TELEPHONE COMMUNICATIONS (NO RADIOTELEPHONE)
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                       SECURITIES AND EXCHANGE COMMISSION
                              Washington, DC 20549

                           --------------------------

                                    FORM 8-K

                                 CURRENT REPORT
                       PURSUANT TO SECTION 13 OR 15(d) OF
                       THE SECURITIES EXCHANGE ACT OF 1934



        Date of report (Date of
        earliest event reported):                   February 29, 2000


                                  VIATEL, INC.
               (Exact Name of Registrant as Specified in Charter)


     Delaware                        000-21261               13-3787366
     (State or Other                 (Commission             (I.R.S. Employer
     Jurisdiction                    File Number)            Identification No.)
     of Incorporation)

                                  Viatel, Inc.
                                685 Third Avenue
                            New York, New York 10017
          (Address of Principal Executive Offices, Including Zip Code)

        Registrant's telephone number, including area code: 212-350-9200

                                 Not Applicable
          (Former Name or Former Address, if Changed Since Last Report)






<PAGE>



Item 2.  Acquisition or Disposition of Assets.

          On February  29,  2000,  Viatel,  Inc.,  a Delaware  corporation  (the
"Company"),  acquired the entire  issued and  outstanding  share capital of AT&T
Communications (UK) Limited, a United Kingdom corporation ("AT&T UK"), from AT&T
Corporation  under the terms of a Share Purchase  Agreement (the "Agreement") by
and  among  AT&T   Communications   Services   International   Inc., a  Delaware
corporation, Global Card Holdings Inc., a Delaware corporation, the Company, and
Viatel  Global   Communications   Limited,  a  United  Kingdom  corporation  and
wholly-owned  subsidiary of the Company.  The Company paid a fixed price of $125
million  for AT&T UK,  which it  funded  from  cash on hand.  As a result of the
transaction, AT&T UK became an indirect, wholly-owned subsidiary of the Company.

Item 7.  Financial Statements, Pro Forma Financial Information
             and Exhibits.

         (a)   Financial Statements of Businesses Acquired.

               The audited  financial  statements  of AT&T UK, as of and for the
               years ended  December  31,  1999 and 1998,  required by this item
               will be filed by amendment.

         (b)   Pro Forma Financial Information.

               The pro forma financial information required by this item will be
               filed by amendment.

         (c)   Exhibits.

               The following exhibits are filed with this Report.

Exhibit No.        Description.

2.2                 Agreement  for the sale and  purchase  of the entire  issued
                    share capital of AT&T  Communications  (UK) Limited,  by and
                    among  AT&T  Communications   Services  International  Inc.,
                    Global Card Holdings  Inc.,  Viatel,  Inc. and Viatel Global
                    Communications Limited, dated February 29, 2000.

99.1                Press Release of Viatel, Inc., dated February 29, 2000.



                                       2
<PAGE>



                                   SIGNATURES


                  Pursuant to the requirements of the Securities Exchange Act of
1934,  the  Registrant has duly caused this report to be signed on its behalf by
the undersigned hereunto duly authorized.

                                                          VIATEL, INC.


Date:  March 13, 2000                By:    /S/ JAMES P. PRENETTA
                                           -------------------------------------
                                           Name:      James P. Prenetta
                                           Title:     Senior Vice President and
                                                      General Counsel







                                       3



<PAGE>



                                  EXHIBIT INDEX




EXHIBIT NO.         DESCRIPTION.

2.2                 Agreement  for the sale and  purchase  of the entire  issued
                    share capital of AT&T  Communications  (UK) Limited,  by and
                    among  AT&T  Communications   Services  International  Inc.,
                    Global Card Holdings  Inc.,  Viatel,  Inc. and Viatel Global
                    Communications Limited, dated February 29, 2000.

99.1                Press Release of Viatel, Inc., dated February 29, 2000.








                                       4





                                                                     EXHIBIT 2.2



                             DATED 29 FEBRUARY 2000
            ---------------------------------------------------------







                 AT&T COMMUNICATIONS SERVICES INTERNATIONAL INC.
                        AND GLOBAL CARD HOLDINGS INC.            (1)

                                VIATEL, INC.                     (2)

                                       AND

                    VIATEL GLOBAL COMMUNICATIONS LIMITED         (3)





            ---------------------------------------------------------

                                    AGREEMENT
              FOR THE SALE AND PURCHASE OF THE ENTIRE ISSUED SHARE
                    CAPITAL OF AT&T COMMUNICATIONS (UK) LTD.

            ---------------------------------------------------------



<PAGE>


                                    CONTENTS

                              CLAUSE HEADING                                PAGE


1        Definitions and interpretation........................................1

2        Sale of the Shares...................................................12

3        Consideration........................................................12

4        Completion...........................................................16

5        Undertakings and other matters.......................................18

6        Warranties...........................................................33

7        Tax Covenant.........................................................35

8        Announcements........................................................35

9        Releases, waivers etc., by the Purchaser.............................35

10       Notices..............................................................36

11       Entire Agreement.....................................................38

12       Alterations..........................................................38

13       Severability.........................................................38

14       Counterparts.........................................................38

15       Payment of costs.....................................................39

16       Successors and Assigns...............................................39

17       Applicable law , submission to jurisdiction and dispute resolution...39

18       Confidentiality......................................................40

19       Time of Essence......................................................40

20       Effect of Completion.................................................40

21       Guarantee............................................................41

Schedule 1....................................................................43

Schedule 2....................................................................44

Schedule 3....................................................................49

<PAGE>

Schedule 5....................................................................59

Schedule 6....................................................................83

Schedule 7....................................................................90

Schedule 8...................................................................101

Schedule 9...................................................................105

Schedule 10..................................................................108






Appendix A          Listed Customers and Services

Appendix B          Private Transit draft terms


Agreed drafts:      Property Sale Agreement
                    Announcement
                    Agreements for Lease (x3)
                    Escrow Letter
                    Pension Notice of Withdrawal
                    Transitional Services Amendment Agreements


<PAGE>



THIS AGREEMENT is dated 29 February 2000

BETWEEN:

(1)      AT&T COMMUNICATIONS  SERVICES INTERNATIONAL INC. a Delaware corporation
         having its principal office at 412 Mount Kemble Avenue, Morristown, New
         Jersey,  07962,  USA ("ACSI") and GLOBAL CARD HOLDINGS INC., a Delaware
         corporation having its principal office at 7979 East Tufts Avenue, Room
         150, Denver, Colorado,  80237, USA ("GLOBAL") (together the "VENDORS");
         and

(2)      VIATEL,  INC.,  685 Third Avenue,  24th Floor,  New York, NY, USA 10017
         (the "GUARANTOR"); and

(3)      VIATEL GLOBAL  COMMUNICATIONS  LIMITED (No.  3918064) whose  registered
         office is at  Parnell  House,  25  Wilton  Road,  London  SW1V 1LW (the
         "PURCHASER").

WHEREAS

(A)      The Company (as defined below) is a private company limited by shares.

(B)      The  Vendors  have  agreed  to sell and the  Purchaser  has  agreed  to
         purchase  the Shares (as  defined  below) upon the terms and subject to
         the conditions of this Agreement.

(C)      The Guarantor has agreed to guarantee the  obligations of the Purchaser
         under this Agreement (and any other agreement to be entered into by the
         Purchaser in  connection  with this  Agreement) on the terms set out in
         this Agreement.

NOW IT IS HEREBY AGREED as follows:

1        DEFINITIONS AND INTERPRETATION

1.1      In this Agreement unless the context otherwise requires:

         "31/12/99 ACCOUNTS" means the Company's  individual accounts (including
         the notes to those accounts and the associated directors' and auditor's
         reports) for the 12 month period ended on, 31st  December 1999 prepared
         in accordance with Schedule 8;

         "ACCOUNTS" means the Company's audited individual accounts, prepared in
         compliance with generally accepted  accounting  conventions,  policies,
         principles and practices in the United  States,  for the 9 month period
         ended on the Accounts  Date,  including the notes to those accounts and
         the associated directors' and auditors' reports;

         "ACCOUNTS DATE" means 30th September 1999;

                                       1
<PAGE>

         "ACCOUNTS  RELIEF"  means any Relief  taken into account in arriving at
         the  provision for tax in the  Completion  Date Accounts or shown as an
         asset in those accounts;

         "AGREED FORM" means terms contained in a form reasonably  acceptable to
         the Vendors and the Purchaser;

         "AGREEMENTS  FOR  LEASE"  means  the three  agreements  for lease to be
         entered into by the Company on or before Completion in the agreed form;

         "ANNOUNCEMENT" means the press announcement in the agreed form relating
         to this Agreement;

         "APPENDIX"  means the  appendix  to this  Agreement  in the form of the
         agreed draft describing the Data Services, Voice Services,  Listed Data
         Customers,  Listed Data  Contracts,  Listed Voice  Customers and Listed
         Voice Contracts;

         "ASSETS" means the  telecommunications  dishes, leased fibre, switches,
         hubs, routers, and other equipment, spares and supplies currently being
         used by the Company at the date of this  Agreement in  connection  with
         the business of the Company (or any part thereof);

         "ASSURANCE" means any guarantee,  assurance,  covenant,  undertaking or
         commitment;

         "AT&T GME" means AT&T Global  Markets  (EMEA)  Limited,  a company with
         limited  liability and having its registered  office at Quadrant House,
         Thomas More Square, 17 Thomas More Street, London E1W 1YE;

         "AT&T GROUP" means AT&T Corp.,  being a New York Corporation having its
         principal  office  at 32 Avenue of the  Americas,  New York,  New York,
         10013 - 2412,  and those of its related  companies  or entities  (other
         than the  Company)  in respect of which AT&T Corp.  owns 50% or more of
         the equity stock or shares of that entity from time to time;

         "AT&T GROUP PROPRIETARY INFORMATION" means any specifications, designs,
         plans,  drawings,  data,  prototypes or other business and/or technical
         information  (excluding  programs and software and  materials  licensed
         under the Supply  Agreement)  which is owned by any  entity  within the
         AT&T Group and used in the  business of the  Company at the  Completion
         Date but which is not generally known to the public;

         "AT&T PATENT" means any patent owned by any member of the AT&T Group;

         "AUCS" means collectively AUCS N.V. and AUCS v.o.f.,  both having their
         registered offices at Hoofddorp, The Netherlands;

         "AUCS DATA  PLATFORM"  means the physical and technical  platform owned
         and/or  utilised by AUCS at 1st April 1999 to deliver Data  Services to
         Listed Data Customers  (including without  limitation  Stratacom assets


                                       2
<PAGE>

         and technology,  Nortel and Nortel DPN assets and  technology,  and the
         AUCS internet  protocol  platform used to deliver  internet transit and
         dial I.P. service);

         "AUCS VOICE PLATFORM" means the physical and technical  platforms owned
         and/or  utilised  by AUCS at 1st April  1999 to provide  voice  virtual
         network services and international customer calling centre services;

         "AUDITORS"    means    the    auditors    of   the    Company    namely
         PricewaterhouseCoopers,  Chartered Accountants and Registered Auditors,
         of 1 Embankment Place, London, WC2N 6NN;

         "BUSINESS DAY" means a day  (excluding  Saturdays and Sundays) on which
         clearing  banks  are  ordinarily  open for the  transaction  of  normal
         banking business in New York and the City of London;

         "BUSINESS   INFORMATION"  means  formulas,   designs,   specifications,
         drawings,  data,  manuals and  instructions  and customer lists,  sales
         information,  technical information,  computer software, accounting and
         tax records, correspondence, orders and enquiries;

         "CA 1985" means the Companies Act 1985;

         "CARVE OUT AGREEMENTS"  means the memoranda of sale and assets transfer
         agreement  between the Company and AT&T GME and AT&T Easylink  Services
         Limited and documentation recording the purchase of various assets from
         AT&T ISTEL and AT&T (UK) LTD, copies of which are contained at sections
         19.1, 19.2 and 19.3 of the Data Room;

         "CLAIM" means any notice, demand, assessment,  letter or other document
         issued or action  taken by or on behalf of any Tax  Authority  (whether
         before,  on or after the date of this  Agreement) from which it appears
         that a Tax  Liability is to be or may come to be imposed on the Company
         or that the  Company  is liable or is sought to be made  liable to make
         any payment or increased or further payment to such Tax Authority;

         "COMPANY"  means AT&T  Communications  (UK) LTD.  (No.  2948988)  whose
         registered  office is at Quadrant House,  Thomas More Square, 17 Thomas
         More Street, London E1W 1YE;

         "COMPLETION" means completion of the sale and purchase of the Shares by
         the performance by the parties of their  respective  obligations  under
         clause 3;

         "COMPLETION  DATE" means 29th  February 2000 (or such other date as the
         parties may agree in writing);

         "COMPLETION  DATE  ACCOUNTS"  means the Company's  individual  accounts
         (including the notes to those  accounts and the  associated  directors'
         and auditors' reports) for the 14 month period of the Company ending on
         the Completion Date, prepared in accordance with schedule 8;

                                       3
<PAGE>

         "CONFIDENTIAL   INFORMATION"   means  Business   Information   relating
         specifically  to the  business of the Company and which is owned by the
         Company  and is for the time  being  confidential  to the  Company  but
         excluding AT&T Group Proprietary Information;

         "DATA ROOM  DOCUMENTS"  means the documents  contained in the data room
         prepared by the Vendors,  all as indexed in the Data Room Index and the
         Supplemental Data Room Index;

         "DATA ROOM INDEX" means the index of Data Room  Documents in the agreed
         form;

         "DATA SERVICES" means the data  telecommunications  services  currently
         delivered  by AUCS as  described  in the  Appendix or any new  services
         offered by AUCS to AT&T GME from time to time;

         "DISCLOSURE LETTER" means the letter of the same date as this Agreement
         from  the  Vendors  to the  Purchaser  disclosing  certain  matters  in
         relation to the Warranties;

         "EMPLOYEES" means the persons whose names are set out in the Disclosure
         Letter as being all the employees of the Company;

         "ESCROW ACCOUNT" means an interest bearing deposit account in the joint
         names of the Purchaser's  Solicitors and the Vendors' Solicitors at TSB
         Lloyds Bank, Colmore Row, Birmingham Branch (sort code: 30-00-03);

         "ESCROW AMOUNT" means (pound)2,308,997;

         "ESCROW LETTER" means the letter referred to in clause 4.1(a)(iv);

         "EVENT" means any event, act, transaction,  action or omission (whether
         or not the Company is a party thereto) and includes the disposal of the
         Shares pursuant to this  Agreement,  any change in the residence of any
         person for the purposes of Tax, the death or dissolution of any person,
         the   receipt  or  accrual  of  any  income   profits  or  gains,   any
         distribution,  any transfer,  payment,  loan or advance,  and any event
         which is deemed to have  occurred  or is treated or  regarded as having
         occurred for the purposes of Tax Legislation;

         "FA" means Finance Act of the year referred to;

         "GLOBAL  CONTRACTS"  means all those  contracts  between  either of the
         Vendors or other members of the AT&T Group (other than the Company) and
         their  suppliers  facilitating  the supply of goods or  services to the
         AT&T Group and under which certain goods or services have been provided
         for the  benefit  of the  Company  and  which  are  listed in Data Room
         section XXVII, file 27.1.23;

         "HOLDING  COMPANY"  shall bear the meaning given to that  expression in
         section 736 CA 1985;

         "ICTA 1988" means the Income and Corporation Taxes Act 1988;

                                       4
<PAGE>

         "INCOME PROFITS OR GAINS"  includes income profits or gains  (including
         capital  gains)  of any  description  and from any  source  and  income
         profits or gains which are deemed to be earned  accrued or received for
         the purposes of any Tax;

         "INFORMATION TECHNOLOGY" means computer hardware,  software,  firmware,
         networks and other information  technology and any assets which include
         embedded technology;

         "INSTALMENT PAYMENT  REGULATIONS" means the Corporation Tax (Instalment
         Payment) Regulations 1998 (S.I. 1998 No. 3175);

         "INTELLECTUAL  PROPERTY" means patents,  trade marks and service marks,
         rights in designs,  trade or  business  names,  copyrights  (including,
         without limitation,  rights in software) and topography rights (whether
         or not any of these  are  registered  and  including  applications  for
         registration  of any such  thing),  database  rights  and all rights or
         forms of protection of a similar nature or having equivalent or similar
         effect to any of these which may subsist anywhere in the world;

         "LEASEHOLD  PROPERTIES" means the leasehold properties details of which
         are set out in Part A of Schedule 2;

         "LISTED DATA CONTRACT" means a contract for the supply of Data Services
         between  AT&T GME and a Listed  Data  Customer  which is  listed in the
         Appendix;

         "LISTED DATA  CUSTOMER"  means a customer of AT&T GME for Data Services
         as at the Completion Date as listed in the Appendix;

         "LISTED  VOICE  CONTRACT"  means a contract for the  provision of Voice
         Services  between AT&T GME and a Listed Voice  Customer which is listed
         in the Appendix;

         "LISTED VOICE CUSTOMER" means a customer of AT&T GME for Voice Services
         as at the Completion Date as listed in the Appendix;

         "MANAGEMENT  ACCOUNTS" means the unaudited  management  accounts of the
         Company as at the Management Accounts Date contained in section I, file
         1.8.19 of the Data Room;

         "MANAGEMENT ACCOUNTS DATE" means 31st December 1999;

         "MATERIAL  CONTRACT" means a contract,  agreement or arrangement with a
         material customer or a material supplier;

         "MATERIAL  CUSTOMER"  means a customer  identified  in the  disclosures
         against Warranty 10.3 as set out in the Disclosure Letter;

         "MATERIAL  SUPPLIER"  means a supplier  identified  in the  disclosures
         against Warranty 10.3 as set out in the Disclosure Letter;

         "NEGOTIATING TEAMS" means, in the case of the Vendors, Richard Jephcott
         and Karen Clark,  and in the case of the  Purchaser,  Mark Courtney and
         Stephen Grist;

                                       5
<PAGE>

         "NEW RELIEF" means any Relief which arises:

         (a)      as a result of any Event occurring after Completion; or

         (b)      in respect of any period commencing on or after Completion;

         "NOMINATED  ACCOUNT"  means the  Vendors'  Solicitors'  client  account
         numbered  0660947  at  Lloyds  TSB Bank PLC  (Colmore  Row,  Birmingham
         branch) - Sort Code 30-00-03;

         "PERSON"  means  any   individual,   partnership,   body  corporate  or
         unincorporated association;

         "PENSION PLANS" means all or any of:

         (a)      the AT&T  ISTEL  Pension Plan established by a definitive deed
                  and rules dated 31st March 1989 (the "MAIN PLAN");

         (b)      the AT&T ISTEL  Supplementary  Pension Plan  established  by a
                  definitive  deed  and  rules   dated  31st  March   1989  (the
                  "SUPPLEMENTARY PLAN"); and

         (c)      the AT&T  (UK) LTD  Retirement  Benefits  Plan  governed  by a
                  definitive  deed and rules dated 13th  November  1992 (the "UK
                  PLAN");

         "PROPERTY" or "PROPERTIES" means freehold, leasehold or other immovable
         property in any part of the world;

         "PROPERTY  OWNER"  means,  in relation to any Leasehold  Property,  the
         person referred to as the proprietor in Part A of Schedule 2;

         "PROPERTY  SALE  AGREEMENT"  means  an  agreement  for  the  sale  of a
         portfolio  of  properties  entered  into on the date of this  Agreement
         between (1) AT&T ISTEL and (2) the Company;

         "PURCHASE PRICE" means  $125,000,000 plus or minus any payment pursuant
         to clause 3.3;

         "PURCHASER'S  SOLICITORS"  means Bird & Bird of 90 Fetter Lane,  London
         EC4A 1JP;

         "RELATED  COMPANY" in relation to any company  means any  subsidiary or
         holding  company of that company or any  subsidiary of any such holding
         company;

         "RELEVANT BREACH" means any event, condition,  occurrence, fact, matter
         or circumstance which is inconsistent with,  contrary to or otherwise a
         breach of any of the Warranties;

         "RELEVANT PERIOD" means:

         (a)      in relation to corporation tax, any accounting period ended on
                  or before Completion; and

                                       6
<PAGE>

         (b)      in relation to any other Tax,  any period ended on or prior to
                  Completion in respect of which the Company is required to make
                  a return or payment to a Tax Authority;

         "RELIEF"  means  any  loss,  relief,  allowance,   exemption,  set-off,
         deduction,  credit,  right to  payment  or other  relief  available  in
         relation to Tax or to the  computation  of income  profits or gains for
         the purposes of Tax;

         "RELEVANT  VOICE  SERVICES"  means  in  relation  to any  Listed  Voice
         Customer, the provision to such customer in whatever manner through use
         of the AUCS  Voice  Platform  of  Voice  Services  which  meet the same
         requirements  of such  customer,  or are the  same as or  substantially
         similar to the Voice Services,  as delivered to such customer under the
         relevant Listed Voice Contract or Contracts;

         "RELEVANT DATA SERVICES" means in relation to any Listed Data Customer,
         the  provision to such customer in whatever  manner  through use of the
         AUCS Data Platform of Data Services which meet the same requirements of
         such customer,  or are the same as or substantially similar to the Data
         Services,  as delivered to such customer under the relevant Listed Data
         Contract or Contracts;

         "SERVICE PROVIDER  AGREEMENTS"  means the Service Provider  Agreement -
         Voice - between  the  Company  and AUCS dated  29/5/99  and the Service
         Provider Agreement - Data - between the Company and AUCS dated 29/5/99;

         "SHARES" means all of the issued and outstanding  shares in the capital
         of the Company;

         "SECURITY  INTEREST" means a mortgage,  charge,  pledge,  lien, option,
         right of  possession,  right of  pre-emption  or other  encumbrance  or
         security interest of any kind but excluding:

         (a)      any lien arising in the ordinary  course of business to secure
                  amounts which are not material;

         (b)      any unpaid vendors' or suppliers' lien arising in the ordinary
                  course of the Company's trading business to secure amounts due
                  in respect of goods or services sold or supplied; and

         (c)      liens arising by operation of law, including a banker's lien;

         "SUBSIDIARY" means a subsidiary (as defined by sections 736 and 736A CA
         1985);

         "SUPPLEMENTAL   DATA  ROOM  INDEX"  means  the  index  of  supplemental
         documents contained in the Data Room in the agreed form;

         "THE SUPPLY  AGREEMENT"  means the agreement  dated 27 October 1999 for
         the  provision  and use of certain  software and systems  owned by AT&T
         Corp after the  Completion  Date contained in section III, file 3.18 of
         the Supplementary Data Room Index;

         "TAX" means:

                                       7
<PAGE>

         (a)      corporation   tax,   advance   corporation   tax,  income  tax
                  (including  income  tax or  amounts  equivalent  to income tax
                  required to be deducted or withheld  from or accounted  for in
                  respect of any payment),  capital gains tax,  inheritance tax,
                  net  worth,  real or  personal  property  taxes,  stamp  duty,
                  reserve  tax,  capital  stock,  duties of customs  and excise,
                  value   added  tax,   sales  taxes  and   national   insurance
                  contributions and any other taxes,  levies,  duties,  charges,
                  imposts  or  withholdings  corresponding  to,  replaced  by or
                  replacing  any of  them  whether  of  the  United  Kingdom  or
                  elsewhere, by a federal, state or local Tax Authority; and

         (b)      all  penalties,  fines,  charges,  surcharges  and interest in
                  relation to taxation within paragraph (a) or to any failure to
                  file any return required for the purpose of any of them;

         "TAX  AUTHORITY"  means the Inland  Revenue,  HM Customs & Excise,  the
         Department of Social  Security and any other  governmental,  statutory,
         state,  provincial  or local  government  authority,  body or  official
         (whether  within  or  outside  the  United  Kingdom)  involved  in  the
         assessment, collection or administration of Tax;

         the "TAX  COVENANT"  means the  covenant  by the Vendors  contained  in
         Schedule 3;

         "TAX  LEGISLATION"  means any  statute,  enactment,  law or  regulation
         providing for the imposition of Tax;

         "TAX  LIABILITY"  means a  liability  to make an actual  payment of Tax
         whether or not the  Company  shall or may have a right of  recovery  or
         reimbursement  against any other Person (regardless of whether any such
         liability  shall have been  discharged in whole or in part on or before
         Completion,  save to the  extent  that  such  discharge  is taken  into
         account in the Completion Date Accounts) and also:

         (1)      the loss,  of any Relief which would (were it not for the said
                  loss) have been  available  to the  Company and which has been
                  taken  into  account  in  computing   (and  so  reducing)  any
                  provision  for  deferred Tax which  appears in the  Completion
                  Date Accounts (or which, but for the presumed  availability of
                  such  Relief,  would  have  appeared  in the  Completion  Date
                  Accounts);

         (2)      the loss of a right to repayment of Tax which has been treated
                  as an asset of the Company in preparing  the  Completion  Date
                  Accounts; and

                  any  Reliefs  and rights to  repayment  of Tax  referred to in
                  sub-paragraphs  (1) or (2) shall be "ACCOUNTS  RELIEF" for the
                  purposes of this Agreement, and in any case falling within any
                  of sub-paragraphs (1) or (2), the amount that is to be treated
                  for the  purposes  of  this  deed  as a Tax  Liability  of the
                  Company (the "DEEMED TAX  LIABILITY")  shall be  determined as
                  follows:

         (a)      in a case which falls  within  paragraph  (2),  the Deemed Tax
                  Liability shall be the amount of the repayment that would have
                  been   obtained   but  for   the   loss   mentioned   in  that
                  sub-paragraph;

                                       8
<PAGE>

         (b)      in a case which falls within  sub-paragraph  (1) and where the
                  Relief  that was the  subject of the loss  mentioned  in those
                  sub-paragraphs was a deduction from or offset against Tax, the
                  Deemed Tax Liability shall be the amount of that Relief; and

         (c)      in a case which falls within  sub-paragraph  (1) and where the
                  Relief  that was the  subject of the loss  mentioned  in those
                  sub-paragraphs  was a deduction from or offset against income,
                  profits or gains, the Deemed Tax Liability shall be the amount
                  of Tax which  would,  on the basis of the rates of Tax current
                  at the date of the loss, have been saved but for the loss;

         "THE  TAX  WARRANTIES"  means  the  Warranties  contained  in Part B of
         Schedule 5;

         "TCGA 1992" means the Taxation of Chargeable Gains Act 1992;

         "TERRITORY" means the United Kingdom and Eire;

         "THIRD PARTY  INTELLECTUAL  PROPERTY" means the  intellectual  property
         licensed  to the Company by third  parties and used in the  business of
         the  Company  general  details  of which are set out in the  Disclosure
         Letter;

         "TRANSITIONAL  SERVICES" means the provision and receipt of services to
         and from other AT&T Group  companies and to and from AUCS and X-TANT on
         a temporary basis as set out in the Transitional Service Agreements;

         "TRANSITIONAL   SERVICES  AGREEMENTS"  means  the  agreements  for  the
         provision  and receipt of  Transitional  Services,  copies of which are
         contained at section XVII, file 17.2 of the Data Room Documents;

         "TRANSITIONAL  SERVICES  AMENDMENT  AGREEMENTS" means the agreements to
         amend  certain of the  Transitional  Services  Agreements in the agreed
         forms;

         "US ACCOUNT" means the account of the Vendors numbered  910-2-763637 at
         Chase Manhattan Bank, New York, Swift Code - CHASUS 33;

         "VAT" means the tax imposed by VATA 1994;

         "VATA 1994" means the Value Added Tax Act 1994;

         "VENDORS' APPEAL" means any appeal,  dispute,  compromise or defence in
         relation to the Vendors' Conduct Matters;

         "VENDORS'   CONDUCT   MATTERS"  means  the   preparation,   submission,
         negotiation,  correspondence  and agreement of all matters  relevant to
         the Tax position of the Company for a Relevant Period;

         "VENDORS'  RELIEF"  means any  Relief  which  arises as a result of any
         event occurring in respect of a period ending on or before Completion;

         "VENDORS'  SOLICITORS" means Wragge & Co of 55 Colmore Row,  Birmingham
         B3 2AS;

                                       9
<PAGE>

         "VOICE  SERVICES"  means voice  telecommunications  services  currently
         delivered by AUCS as described in the Appendix;

         "WARRANTIES" means the warranties  contained in clause 6.1 and Schedule
          5;

         "WORKING  CAPITAL PAYMENT" means the sum to be paid by the Purchaser in
         accordance with clause 3.3;

         "WORKING  CAPITAL  VALUE"  means the sum  (positive  or negative) as is
         calculated by deducting the current liabilities of the Company from its
         current assets (including cash in hand or at bank), such current assets
         and current liabilities being determined in accordance with UK GAAP and
         the accounting policies and principles set out in Part A of Schedule 9;

         "WORKING  CAPITAL  STATEMENT"  means the  statement  to be  prepared in
         accordance with clause 3 showing the calculation of the Working Capital
         Value as at the Completion Date;

         "YEAR 2000  COMPLIANT"  means that any software or hardware will not be
         adversely  affected  by any  changes to the date  format  caused by the
         advent of the year 2000 or any subsequent year and in particular:

         (a)      no value for the current date will cause any  interruption  in
                  the operation of any software or hardware;

         (b)      all  manipulations  of  time-related  data  will  produce  the
                  desired   results  for  all  valid  date  values   within  the
                  application   domain  of  any  software  or  hardware  and  in
                  combination with other software or hardware products;

         (c)      all date  elements in interfaces  and data storage  within any
                  software will permit the century to be specified without human
                  intervention; and

         (d)      where any date element is represented  without a century,  the
                  correct  century  will be  unambiguous  for all  manipulations
                  involving that element;

         as further interpreted by the British Standard  Institution's Year 2000
         compliance rules and amplification  notes as set out in document PD2000
         1:1998;

1.2      a document  expressed  to be "IN THE AGREED FORM" means a document in a
         form which has been  agreed by the  parties  contemporaneously  with or
         before the execution of this  Agreement and which has, for the purposes
         of identification, been initialled by them or on their behalf;

1.3      references  to a clause or  Schedule  are to a clause of, or a Schedule
         to, this Agreement,  references to this Agreement include its schedules
         and  references  in a Schedule or part of a Schedule to a paragraph are
         to a paragraph of that Schedule or that part of that Schedule;

1.4      references to this  Agreement or any other document or to any specified
         provision  of  this  Agreement  or  any  other  document  are  to  this
         Agreement,  that  document or that  provision  as in force for the time
         being and as amended from time to time in accordance  with the terms of


                                       10
<PAGE>

         this  Agreement  or that  document  or,  as the case  may be,  with the
         agreement of the relevant parties;

1.5      words importing the singular  include the plural and vice versa,  words
         importing  a gender  include  every  gender and  references  to persons
         include    corporations,    partnerships   and   other   unincorporated
         associations or bodies of persons;

1.6      the contents table and the descriptive  headings to clauses,  schedules
         and  paragraphs  (and  summaries  in  parentheses  of the  scope of any
         statutory   provisions  in  the  Tax   Warranties)   are  inserted  for
         convenience  only,  have no legal  effect  and shall be  ignored in the
         interpretation of this Agreement;

1.7      the words and phrases  "OTHER",  "INCLUDING" and "IN PARTICULAR"  shall
         not limit the  generality  of any  preceding  words or be  construed as
         being  limited to the same class as the  preceding  words where a wider
         construction is possible;

1.8      a person is connected with another person if he is so connected  within
         the meaning of section 839 ICTA 1988;

1.9      reference to an Event occurring on or before Completion shall be deemed
         to include:

         (a)      any  combination of two or more Events all of which shall have
                  occurred on or before Completion;

         (b)      any  Event  which is  treated  or deemed to occur on or before
                  Completion for the purposes of any Tax;

1.10

         (a)      "ENACTMENT" means any statute or statutory  provision (whether
                  of the United Kingdom or elsewhere),  subordinate  legislation
                  (as defined by section 21(1)  Interpretation Act 1978) and any
                  other  subordinate  legislation  made  before the date  hereof
                  under any such statute or statutory provision;

         (b)      a reference to any enactment shall be construed as including a
                  reference to:

                  (i)      any  enactment  which that  enactment  has before the
                           date hereof directly or indirectly  replaced (whether
                           with or without modification), and

                  (ii)     that  enactment as  re-enacted,  replaced or modified
                           from time to time;

                           provided that this clause 1.10 shall not increase the
                           liability  of any party above that which exists as at
                           Completion.

1.11     All agreements,  obligations and liabilities on the part of the Vendors
         are joint and several and shall be construed accordingly.

1.12     In relation to a body corporate:

                                       11
<PAGE>

         (a)      "GROUP"  means  that  body  corporate,  its  subsidiaries  and
                  holding  company  together with any  subsidiaries  of any such
                  holding company;

         (b)      "GROUP COMPANY means a member of a Group.

2        SALE OF THE SHARES

2.1      The  Vendors  shall  sell  to the  Purchaser  and the  Purchaser  shall
         purchase the Shares from the Vendors.

2.2      The Vendors  shall sell and  transfer  the Shares free from all claims,
         Security  Interests  (including for these purposes free from any of the
         items referred to in paragraph (a) - (c) in the definition of "SECURITY
         INTERESTS"), equities and other rights exercisable by third parties and
         with full title guarantee.

2.3      Title to, beneficial ownership of, and any risk attaching to the Shares
         shall pass on  Completion  and the Shares  shall be sold and  purchased
         together  with all rights and benefits  attached or accruing to them at
         Completion (including the right to receive all dividends, distributions
         or any return of capital  declared,  paid or made by the  Company on or
         after Completion).

2.4      The  Purchaser  shall not be obliged to complete the purchase of any of
         the  Shares  unless  the  purchase  of  all  the  Shares  is  completed
         simultaneously.

3        CONSIDERATION

3.1      The consideration for the Shares shall be:

         (a)      the payment by the  Purchaser  to the Vendors of the  Purchase
                  Price in cash in accordance with the provisions of this clause
                  3 and clause 4.1(c);

         (b)      the undertaking of the Purchaser set out in clause 5.21 below.

3.2      On Completion, the Purchaser shall pay

         (a)      to the US Account of ACSI on behalf of both  Vendors,  the sum
                  of US$125,000,000 in respect of the Purchase Price;

         (b)      to the US Account of ACSI on behalf of both  Vendors,  the sum
                  of $7,763,921 on account of any Working Capital Payment; and

(c)               the Escrow Amount into the Escrow  Account,  on account of the
                  balance of any Working Capital Payment in excess of the amount
                  referred to in (b) above.

3.3      Following  the  agreement  or  determination  of  the  Working  Capital
         Statement pursuant to clause 3.15:

         (a)      if the  Working  Capital  Value is less than  $5,000,000,  the
                  Vendors  shall pay to the  Purchaser  an amount  equal to such
                  shortfall;

                                       12
<PAGE>

         (b)      if the  Working  Capital  Value is more than  $5,000,000,  the
                  Purchaser  shall pay to the  Vendors  an amount  equal to such
                  excess;

(c)               if the Working  Capital  Value is  $5,000,000  then no further
                  payment shall be due from the Purchaser to the Vendors or vice
                  versa in respect of Working Capital Value.

3.4      If a payment  is due from the  Purchaser  to the  Vendors  pursuant  to
         clause 3.3(b):

         (a)      which  is equal to or more  than the sum of the  payment  made
                  pursuant  to clause  3.2(b) and the Escrow  Amount the Vendors
                  shall be entitled to the Escrow  Amount plus accrued  interest
                  and  the  balance  due  shall  be  paid  by the  Purchaser  in
                  accordance with clause 3.6;

         (b)      which is less than the sum of the payment made pursuant clause
                  3.2(b) and the Escrow Amount, the Vendors shall be entitled to
                  be paid  that  lesser  amount  from the  Escrow  Account  plus
                  accrued  interest  on that amount and the  Purchaser  shall be
                  entitled to the balance of the Escrow  Account  including  any
                  accrued interest not paid to the Vendors.

3.5      If a payment  is due from the  Vendors  to the  Purchaser  pursuant  to
         clause 3.3(a) then the Purchaser  shall be entitled to the whole of the
         Escrow  Amount  plus  accrued  interest  and  the  balance  due  to the
         Purchaser shall be paid by the Vendors in accordance with clause 3.6.

3.6      In respect of any amount payable under clause 3.3 and subject to clause
         3.8 the Parties shall:

         (a)      instruct  the   Vendors'   Solicitors   and  the   Purchaser's
                  Solicitors  within 7 business  days to make any  payments  due
                  from the  Escrow  Account  pursuant  to  clause  3.4 or 3.5 in
                  accordance with the Escrow Letter;

         (b)      pay any balance due in each case in  accordance  with  clauses
                  3.4 or 3.5 by electronic transfer:

                  (i)      (where  such sum is  expressed  to be  payable to the
                           Vendors) to the  Nominated  Account (and the Vendors'
                           Solicitors  are  hereby  authorised  to receive it in
                           such account);

                  (ii)     (where  such sum is  expressed  to be  payable to the
                           Purchaser)  to such  account as the  Purchaser  shall
                           notify in writing.

3.7      Payment by the Purchaser to the US Account,  the  Nominated  Account or
         the  Escrow  Account,  or from  the  Escrow  Account  (as  applicable),
         pursuant to clauses 3.2 or 3.6 shall constitute a good discharge to the
         Purchaser  in respect of its  obligations  pursuant  to clauses 3.2 and
         3.4.  Payment  by  the  Vendors  to the  account  nominated  in  clause
         3.6(b)(ii)  shall constitute a good discharge to the Vendors in respect
         of the obligation set out in clause 3.5.

3.8      If on the due date of any  payment to the  Vendors  pursuant  to clause
         3.4, the Purchaser  has given  written  notice to the Vendors of one or
         more claims  pursuant to the  Warranties,  the  indemnities in clause 5


                                       13
<PAGE>

         and/or  the Tax  Covenant,  the  Escrow  Amount  (or such part of it as
         equals the amount  claimed by the  Purchaser)  shall be retained in the
         Escrow  Account only until such claim or claims (and, for the avoidance
         of doubt,  no other claim  notified  after such date) is agreed between
         the parties or is adjudicated by a court of competent  jurisdiction  at
         first instance.

3.9      As soon as practicable following Completion, and in any event not later
         than 40 Business Days after Completion,  a draft of the Working Capital
         Statement  shall be prepared by the Vendors in  accordance  with clause
         3.10 and delivered to the  Purchaser.  The Purchaser  shall  co-operate
         with the  Vendors  in the  preparation  of the  draft  Working  Capital
         Statement  by  giving or  procuring  such  access  and  providing  such
         information and assistance as referred to in clause 3.16.

3.10     The draft  Working  Capital  Statement  shall be prepared in accordance
         with UK GAAP and the accounting policies and principles set out in Part
         A of Schedule 9 and in a format and on a basis  consistent with the pro
         forma Working Capital Statement set out in Part B of Schedule 9;

3.11     As soon as  practicable  after  delivery of the draft  Working  Capital
         Statement  to the  Purchaser in  accordance  with clause 3.9 and in any
         event within 40 Business Days after such delivery or such longer period
         as the parties may agree ("THE REVIEW  PERIOD"),  the  Purchaser  shall
         review the draft Working Capital  Statement and endeavour to agree what
         adjustments  (if  any)  need to be made to them in  order  for  them to
         comply with clause 3.10.

3.12     If within the Review Period:

         (a)      the Purchaser  agrees that no  adjustments  need to be made to
                  the draft Working Capital Statement; or

         (b)      the parties agree on the  adjustments  to be made to the draft
                  Working  Capital  Statement  in order  for them to  comply  as
                  aforesaid,

         then the amount of the Working  Capital  Value  specified  in the draft
         Working Capital Statement  (incorporating any adjustments  mentioned in
         (b) above) shall be the Working Capital Statement and the amount of the
         Working  Capital Value for all purposes of this Agreement and shall, in
         the absence of manifest  error, be final and binding on the parties and
         shall not be subject to question on any ground whatsoever.

3.13     If the parties are unable to agree within the Review Period on:

         (a)      whether  adjustments  need to be made to the  Working  Capital
                  Statement;

         (b)      the adjustments to be made thereto; or

         (c)      the amount of the Working Capital Value,

         then such matter or matters (but no other matters)  shall  thereupon be
         referred  to such  firm of  independent  chartered  accountants  as the
         Vendors  and the  Purchaser  may  agree  within 10  business  days of a
         request  by  either of them to the other  or,  failing  such  agreement


                                       14
<PAGE>

         within such time,  as the President for the time being of the Institute
         of  Chartered  Accountants  in England  and Wales may  nominate  on the
         application  of  the  Vendors  or  the  Purchaser   ("THE   INDEPENDENT
         ACCOUNTANTS") for determination as set out in clause 3.14.

3.14     Any determination by any Independent Accountants appointed under clause
         3.13 shall be on the following basis:

         (a)      the Independent  Accountants shall be instructed to notify the
                  Vendors and the Purchaser of their  determination  of any such
                  matter within 20 business days of such referral;

         (b)      the  Vendors  and the  Purchaser  shall  be  entitled  to make
                  written  submission(s)  to the  Independent  Accountants,  but
                  subject thereto the Independent  Accountants  shall have power
                  to determine the procedure to be followed in relation to their
                  determination;

         (c)      any  submissions to and the  determination  of the Independent
                  Accountants  shall  be in the  English  language  and any oral
                  hearings shall be conducted in English in London;

         (d)      in making such submissions the Vendors and the Purchaser shall
                  state their  respective best estimates of monetary  amounts of
                  the matters referred for determination;

         (e)      in making  their  determination  the  Independent  Accountants
                  shall act as experts and not as arbitrators, their decision as
                  to any matter referred to them for determination  shall in the
                  absence of manifest error be final and binding in all respects
                  on the  parties  and shall not be subject to  question  on any
                  ground whatsoever; and

         (f)      the fees and expenses of the Independent  Accountants shall be
                  borne and paid as the Independent Accountants shall direct or,
                  in the absence of any such directions,  by the Vendors and the
                  Purchaser equally.

3.15     Following  any agreement  between the Vendors and the  Purchaser  under
         clause 3.12 or any  determination  by the  Independent  Accountants  in
         accordance with clause 3.14, the parties shall jointly incorporate into
         and reflect in the draft Working  Capital  Statement the matters agreed
         between  the  Vendors  and  the  Purchaser  and/or  determined  by  the
         Independent  Accountants,  together with any adjustments which may have
         been agreed between the parties and the Working Capital Value stated in
         the Working  Capital  Statement  shall be the Working Capital Value for
         all  purposes of this  Agreement,  shall in the absence of manifest and
         error be final and  binding on the  parties and shall not be subject to
         question on any ground whatsoever.

3.16     Until  the  Working  Capital   Statement  shall  have  been  agreed  or
         determined the Vendors and the Purchaser shall respectively:

                                       15
<PAGE>

         (a)      give  or  procure  that  each  other,  their  agents  and  the
                  Independent  Accountants  are given  access at all  reasonable
                  times to all  relevant  books  and  records  which  are in the
                  possession or under the control of the Vendors, the Company or
                  the Purchaser (as the case may be); and

         (b)      generally provide each other, their agents and the Independent
                  Accountants with such other information and assistance as they
                  may reasonably  require (including access to and assistance at
                  reasonable times from personnel  employed by the Vendors,  the
                  Company or the Purchaser,  as the case may be), in relation to
                  the review,  agreement or determination of the Working Capital
                  Statement and the Working Capital Value.

4        COMPLETION

4.1      Completion   shall  take  place  at  the  offices  of  the  Purchaser's
         Solicitors on the Completion Date and all (but not part only unless the
         parties shall so agree) of the following business shall be transacted:

         (a)      the Vendors  shall deliver to the Purchaser or, in the case of
                  paragraphs (ii) and (iii) below, make available for collection
                  by the Purchaser or its authorised representatives:

                  (i)      transfers in respect of the Shares duly  executed and
                           completed in favour of the  Purchaser or its nominee,
                           together  with  the   certificate   or   certificates
                           therefore in the names of the transferors;

                  (ii)     (as  agents  for the  Company)  all of the  Company's
                           statutory and minute books written up to date and its
                           Common  Seal,   Certificate  of  Incorporation,   any
                           Certificate  or  Certificates  of   Incorporation  on
                           Change  of Name  and  copies  of its  Memorandum  and
                           Articles of Association;

                  (iii)    the deeds  and  documents  of title to the  Leasehold
                           Properties;  (iv) a letter  from the  Vendors and the
                           Purchaser   to  the  Vendors'   Solicitors   and  the
                           Purchaser's   Solicitors  in  the  agreed  form  duly
                           executed by the Vendors and the Purchaser  (being the
                           Escrow Letter);  (v) the Property Sale Agreement duly
                           executed  by  AT&T  ISTEL;   (vi)  the   Transitional
                           Services  Amendment  Agreements  duly executed by the
                           parties thereto;

         (b)      the Vendors shall:

                  (i)      cause the transfers  mentioned in clause  4.1(a)((i))
                           to  be  resolved  to be  registered  by  the  Company
                           (subject only to their being duly stamped);

                                       16
<PAGE>

                  (ii)     cause the persons named in part A of Schedule 4 to be
                           validly  appointed as  additional  Directors  and the
                           person  named in part B of  Schedule  4 to be validly
                           appointed as  Secretary of the Company;  and

                  (iii)    on such  appointments  being made,  cause the persons
                           named  in  part  C of  Schedule  4  to  cease  to  be
                           Directors  and the person named in part D of Schedule
                           4 to cease to be Secretary of the Company;

         (c)      the Purchaser shall pay:

                  (i)      $125,000,000   (being  the  Purchase   Price  payable
                           pursuant to clause  3.2(a)) and the sum of $7,763,921
                           on account of any  Working  Capital  Payment  payable
                           pursuant  to  clause  3.2(b)  by   electronic   funds
                           transfer for value to the US Account; and

                  (ii)     shall pay an amount equal to the Escrow Amount to the
                           Escrow  Account (and the Vendors'  Solicitors and the
                           Purchaser's   Solicitors  are  hereby  authorised  to
                           receive it in such account);

         (d)      the parties shall join in procuring that:

                  (i)      the  current  accounting   reference  period  of  the
                           Company  shall  be  altered  so  as  to  end  on  the
                           Completion Date;

                  (ii)     an agreement  for lease in the agreed form in respect
                           of  each  of the  Properties  described  in Part B of
                           Schedule 2 is entered into by the parties  identified
                           against each such property;

                  (iii)    an agreement  for lease in the agreed form in respect
                           of the Property  described in Part C of Schedule 2 is
                           entered into by the parties  identified  against such
                           property.

4.2      Neither the Purchaser nor the Vendors shall be obliged to complete this
         Agreement  unless the Vendors comply or procure  compliance with or, as
         the case may be, the Purchaser  complies or procures  compliance  with,
         the requirements of clause 4.1.

4.3      Neither the  Purchaser nor the Vendors shall be obliged to complete the
         sale and purchase of some but not all of the Shares.

5        UNDERTAKINGS AND OTHER MATTERS

5.1      The  Vendors  hereby  declare  that  for so  long as  they  remain  the
         registered holders of any of the Shares after Completion they will:

         (a)      hold the Shares and the dividends and other  distributions  of
                  profits or surplus or other assets  declared,  paid or made in
                  respect of them after Completion and all rights arising out of
                  or in connection with them in trust for the Purchaser; and

                                       17
<PAGE>

         (b)      deal with and  dispose of the  Shares and all such  dividends,
                  distributions  and rights as are  described  in clause  5.1(a)
                  only as the Purchaser may direct.

5.2      The  provisions of Schedule 7 shall have effect in relation to pensions
         matters.

5.3      The Vendors shall procure that:

         (a)      a resolution  be passed at or before  Completion  changing the
                  name of the Company to Viatel Holdings UK Limited;

         (b)      the resolution referred to in clause 5.3(a) shall forthwith be
                  submitted  to the  Registrar of  Companies  together  with the
                  appropriate  fee  as  soon  as  reasonably  practicable  after
                  Completion (and in any event within ten business days); and

         (c)      promptly  following  receipt of the Change of Name Certificate
                  from the Registrar of Companies,  the same is delivered to the
                  Purchaser.

5.4      Subject to clause 5.5, the Purchaser shall procure that:

         (a)      as soon as reasonably practicable after Completion (and in any
                  event  within ten business  days),  the name or mark "AT&T" or
                  the globe design and any combination thereof or any other name
                  or marks  owned by a member of the AT&T Group ("THE AT&T GROUP
                  MARKS") and any names or marks likely to cause  confusion with
                  and/or which are phonetically similar to any of the AT&T Marks
                  shall no longer be used by the Company or any related  company
                  as a  corporate,  business  or  trading  name or  logo  except
                  insofar as permitted under clause 5.4(b) in relation solely to
                  the use of pre-existing documentation,  signage, stocks, sales
                  literature and promotional material; and

         (b)      the Company  shall as soon as  practicable  but not later than
                  three months after Completion  cease to use any  documentation
                  (including without limitation,  letterhead, business cards and
                  invoices),  signage,  stocks, sales literature and promotional
                  material  existing prior to the Completion  Date which contain
                  any of the AT&T Group Marks.  Without  limiting the  foregoing
                  the Company may for three months after  Completion use labels,
                  signs,  stationery,  brochures  and  other  printed  materials
                  currently  in the  possession  of the  Company and use them in
                  connection with the business of the Company  provided that the
                  Company uses all  reasonable  endeavours to cease any such use
                  as  expeditiously  as possible  and during  such time  clearly
                  identify that the Vendors do not control,  operate, conduct or
                  are not otherwise associated or affiliated with the Company.

5.5      Without  prejudice  to clause 5.4 no rights or  licences  in any of the
         AT&T Group Marks are granted  under this  Agreement and nothing in this
         Agreement shall be construed as conferring by implication,  estoppel or
         otherwise,  any licence or rights in any of the AT&T Group  Marks.  The
         Purchaser  agrees not to challenge  the ownership by the Vendors or the
         relevant  member of the AT&T  Group of, or the  validity  of,  the AT&T


                                       18
<PAGE>

         Group Marks. The Purchaser  further agrees that it has not relied upon,
         nor have the Vendors  made,  any  representations  or warranties of any
         kind  concerning  the  availability  and/or use of the AT&T Group Marks
         under clause 5.4 and any such  representations or warranties are hereby
         expressly disclaimed by the Vendors.

5.6      The  provisions  of  Schedule 8 shall have  effect in  relation  to the
         preparation of the 31/12/99 Accounts and the Completion Date Accounts.

5.7      The Vendors undertake with the Purchaser that they will not at any time
         after  Completion  (subject to clause  5.8)  without the consent of the
         Company or the Purchaser use, whether on its own behalf or on behalf of
         any third party, or divulge to any third party, any of the Confidential
         Information.

5.8      The restrictions in clause 5.7 shall not apply:

         (a)      in respect of any of the Confidential  Information which is in
                  or becomes  part of the public  domain,  other than  through a
                  breach of the obligations of confidentiality set out in clause
                  5.7; or

         (b)      to either Vendor to the extent that it is required to disclose
                  Confidential  Information by any applicable law,  governmental
                  order, decree, regulation,  licence or rule or pursuant to the
                  regulations  of  any  securities  exchange  or  regulatory  or
                  governmental  body to which it is  subject  provided  that any
                  information  disclosed pursuant to this paragraph (b) shall be
                  disclosed only after consultation with the Purchaser.

5.9      Following  Completion  the  Purchaser  agrees  that it  shall,  for the
         periods  set out below (and  subject to clause  5.11),  give or procure
         that the Vendors (including their employees, officers and advisers) are
         given  access  at all  reasonable  times on  reasonable  notice  to all
         records,  books,  documents  and title  deeds  held by the  Company  in
         respect of the  carrying on of the business of the Company at all times
         prior to the  Completion  Date which are in the possession or under the
         control  of the  Company  or the  Purchaser  and which  are  reasonably
         required  by the  Vendors  or any other  member of the AT&T  Group,  in
         either case for the carrying on of the  business of or which  otherwise
         relates to the  business of any such Vendor or other member of the AT&T
         Group:

         (a)      subject to (b) below,  for a period of six years following the
                  Completion Date;

         (b)      for such longer  period as may  reasonably  be required by the
                  Vendors  to the  extent  necessary  to  comply  with any legal
                  obligations (including without limitation,  the requirement to
                  produce  accounts  and tax  returns),  at any time  after  the
                  Completion  Date provided that the Vendors give written notice
                  prior  to  expiry  of the  period  referred  to in (a)  giving
                  specific details of such records,  books,  documents and title
                  deeds required by them.

5.10     The Vendors undertake to procure that all records, books, documents and
         title deeds used  exclusively by the Company shall be under the control
         of the Company at  Completion  and shall be  returned to the  Company's


                                       19
<PAGE>

         principal place of business within six months from the Completion Date.
         Following Completion,  the Vendors shall, for the periods set out below
         and subject to clause  5.11,  provide or procure the  provision  to the
         Purchaser, its related companies and their officers,  agents, directors
         and employees,  upon reasonable notice, reasonable access to and copies
         of  any  other  records,  books,  documents  and  title  deeds  in  the
         possession  or under  the  control  of the  Vendors  or  their  related
         companies insofar as the same are reasonably  required for the carrying
         on of the business of or which otherwise relates to the business of the
         Company:

         (a)      subject to (b) below,  for a period of six years following the
                  Completion Date;

         (b)      for such longer  period as may  reasonably  be required by the
                  Purchaser  to the extent  necessary  to comply  with any legal
                  obligations (including without limitation,  the requirement to
                  produce  accounts  and tax  returns),  at any time  after  the
                  Completion  Date  provided  that the  Purchaser  gives written
                  notice prior to expiry of the period referred to in (a) giving
                  specific details of such records,  books,  documents and title
                  deeds required by it.

5.11     The  parties   undertake  with  each  other  that  in  respect  of  any
         information comprised in records,  books,  documents and title deeds or
         otherwise  ("DISCLOSED  INFORMATION"  for the  purposes  of this clause
         5.11) to which  access is given  under  clauses  5.9 or 5.10 they shall
         not,  without  the  consent  of  the  party  disclosing  the  Disclosed
         Information (such consent not to be unreasonably withheld):

         (a)      use the Disclosed  Information  for any other purpose than the
                  purpose for which such access was given; or

         (b)      disclose the Disclosed Information to any third party save:

                  (i)      to a member of the same Group and, in such case,  the
                           party  receiving  such  Disclosed  Information  shall
                           procure  that the other  members  of its Group  shall
                           observe the terms of this clause 5.11;

                  (ii)     where disclosure is implicit in the purpose for which
                           such access was given;

                  (iii)    that the  restrictions in clause 5.11 shall not apply
                           in the same  circumstances as specified in clause 5.8
                           as if the same were set out here in full in  relation
                           to the Disclosed Information.

5.12     The  Vendors  agree and  undertake  that (in the absence of fraud) they
         have no rights against and shall not make any claim against the Company
         or any employee,  director, agent, officer or adviser of the Company in
         respect of any misrepresentation in or omission from any information or
         advice  supplied  or given by any such  person  and on which  they have
         relied in agreeing the Warranties,  preparing the Disclosure  Letter or
         entering into this Agreement or any agreement referred to in it.

                                       20
<PAGE>

5.13     Without prejudice to any restriction or limitation on the extent of any
         party's obligations under this Agreement, each of the parties shall (at
         its own cost) from time to time, so far as each is reasonably  able, do
         or procure  the doing of all such  reasonable  acts  and/or  execute or
         procure  the  execution  of all  such  documents  in a form  reasonably
         satisfactory  to the party  concerned as they may  reasonably  consider
         necessary to transfer the Shares to the  Purchaser or otherwise to give
         any party the full benefit of this Agreement.

5.14     The Vendors  agree that payment of any bonuses  payable to employees of
         the  Company in  connection  with the sale of the  Company  (being sums
         payable to Senior  Management  in  accordance  with the relevant  bonus
         schemes identified in Supplemental Data Room section III, files 3.9 and
         3.10) will be for the  Vendors'  account and they shall  indemnify  the
         Purchaser  (for  itself and as trustee  for the Company and each of its
         other  related  companies)  against the payment of such bonuses and all
         related costs and  liabilities  (including,  without  limit  employer's
         national  insurance).  Subject to the  Vendors  placing  the Company in
         funds (including, without limitation, National Insurance) in advance of
         the due date for payment of such bonuses,  the Purchaser agrees that it
         shall procure that the Company pays such sums on the Vendors' behalf.

5.15

         (a)      The Vendors shall at their sole cost and expense  procure that
                  the  Company is  entitled to  continue  using  (excluding  all
                  support and  maintenance  and renewal  fees which shall be the
                  ongoing   responsibility  of  the  Company)  the  Third  Party
                  Intellectual Property insofar as such Third Party Intellectual
                  Property is currently licensed to the Company.

         (b)      The Vendors  shall  procure that neither they nor any of their
                  related companies shall require the Purchaser,  the Company or
                  any of their  related  companies  to pay any  royalty or other
                  payment to any of them after  Completion  for the licensing of
                  any  Intellectual  Property  owned by the AT&T Group which has
                  been used by the Company prior to  Completion,  save for those
                  charges expressly set out in the Supply Agreement.

         (c)      The Vendors  covenant not to sue the Company for  infringement
                  of any AT&T Patent used by the  Company  immediately  prior to
                  the  Completion  Date  insofar  as the  said  AT&T  Patent  is
                  necessarily  and  unavoidably  infringed by the Company in the
                  provisioning  of services of a type  offered by the Company in
                  the Territory at the Completion Date.

         (d)      Nothing  contained  in this  Agreement  shall be  construed as
                  conferring by implication,  estoppel, or otherwise any licence
                  of  or  under  any  AT&T  Patent.  The  Vendors  disclaim  any
                  liability of any kind concerning the  availability  and use of
                  any AT&T Patent by the Company after the Completion Date.

         (e)      All  AT&T  Group  Proprietary  Information  shall  remain  the
                  exclusive  property of the AT&T Group and the Purchaser  shall
                  procure that the Company shall:

                                       21
<PAGE>

                  (i)      use the AT&T Group  Proprietary  Information  only to
                           the extent  necessary  for the purpose of  conducting
                           business of a type undertaken by the Company prior to
                           the Completion Date;

                  (ii)     restrict   disclosure   of  AT&T  Group   Proprietary
                           Information to its employees with a need to know (and
                           obligate  such  employees  to conduct  themselves  in
                           accordance with the obligations assumed herein);

                  (iii)    not disclose AT&T Group  Proprietary  Information  to
                           any third party without the prior written approval of
                           the Vendors (which shall not be unreasonably withheld
                           or delayed) except that the Company may disclose AT&T
                           Group   Proprietary   Information  to  third  parties
                           without  prior  written  approval if, and only to the
                           extent that,  such  disclosure is consistent with the
                           conduct  of the  business  of the  Company  of a type
                           undertaken  at the  Completion  Date and  such  third
                           party   is   obligated   so   as  to   maintain   the
                           confidentiality   of  such  AT&T  Group   Proprietary
                           Information.

5.16     Subject to any express provision to the contrary,  any claim under this
         Agreement shall be paid in pounds sterling.

5.17     The Purchaser  covenants  that, at any time and from time to time on or
         after  Completion,  it will  use  all  reasonable  endeavours  (without
         incurring any additional  financial  liability on its part) in order to
         effect the release and discharge in full of any Assurance  given by the
         Vendors or any of their  related  companies to any person in respect of
         any  obligation  or liability of the Company.  Pending such release and
         discharge,  the Purchaser  hereby agrees with the Vendors (on behalf of
         themselves  and their  related  companies)  that it will  indemnify the
         Vendors and their related  companies  against all liabilities  incurred
         pursuant to any such Assurance arising after the Completion Date.

5.18     The  Vendors  covenant  that,  at any time and from  time to time on or
         after Completion, they will execute and deliver all such instruments of
         assumption  and  acknowledgements  or take  such  other  action  as the
         Purchaser may reasonably request (which shall not include the repayment
         or  settlement  of any  primary  obligation  before  its due  date  for
         repayment or settlement in order to effect the release and discharge in
         full of any Assurance  given by the Company to any person in respect of
         any  obligation  or  liability of either of the Vendors or any of their
         related  companies  and  shall  procure  the  assumption  of,  and  the
         substitution of one of the Vendors or an appropriate related company of
         the Vendors as the primary  obligor in respect of, each such  Assurance
         on a  non-recourse  basis  to the  Purchaser  or  any  of  its  related
         companies. Pending such release and discharge, the Vendors hereby agree
         with the Purchaser (on behalf of itself and its related companies) that
         it will  assume  and pay and  discharge  when due,  and  indemnify  the
         Purchaser and its related companies against, all such Assurances;

5.19

         (a)      The Purchaser acknowledges and agrees that upon Completion all
                  insurance  cover  provided in relation to the  business of the
                  Company  pursuant  to policies  maintained  by the Vendors and


                                       22
<PAGE>

                  their  related  companies  shall  cease  and  that no  further
                  liability  shall arise under such policies but (subject to the
                  terms of any  relevant  policy)  without  prejudice to (i) any
                  accrued  claims which the Company may have at  Completion  and
                  (ii) any claims which the Company may have under an occurrence
                  based policy which that policy  covers in respect of events or
                  circumstances   arising   prior   to   Completion   (together,
                  "INSURANCE CLAIMS").

         (b)      The Vendors shall and shall procure that each of their related
                  companies shall take all action and give all assistance as the
                  Purchaser may  reasonably  request in respect of any Insurance
                  Claims and shall  promptly pay any sums received in respect of
                  any Insurance  Claims to the  Purchaser or, as it directs,  to
                  the  Company  or to any of its  related  companies.  Where the
                  Company has direct rights in respect of any  Insurance  Claim,
                  it shall take the lead role in prosecuting that claim.

         (c)      The  Vendors  shall not and shall  procure  that each of their
                  related  companies  shall  not  waive  any  rights  under  the
                  insurance  policies  which  provide  cover  for the  Insurance
                  Claims.

5.20     As from the  Completion  Date all  rights  for the  Company to order or
         procure  goods or  services  under the  Global  Contracts  shall  cease
         forthwith.

5.21     As consideration  for the Vendors agreeing to enter into this Agreement
         and  to  sell  the  Shares  to  the  Purchaser,  the  Purchaser  hereby
         undertakes to each of the Vendors (for  themselves and also as trustees
         for  every  member  of the  AT&T  Group  from  time to  time)  that the
         Purchaser  shall  procure  that  the  Company  shall  not  directly  or
         indirectly  compete with any member of the AT&T Group in the  provision
         of Voice Services or Data Services to Listed Voice  Customers or Listed
         Data  Customers  or solicit or entice  away any such  customers  by (in
         respect of any of the foregoing)  offering or providing  Relevant Voice
         Services or Relevant Data  Services or through use of the  Confidential
         AUCS Information (as defined in clause 5.23) contrary to the provisions
         of clause 5.23. This  restriction  shall apply until the termination in
         whatever  manner of the relevant  Listed Voice  Contract or Listed Data
         Contract,  or in the case of Listed Voice Customers 31st December 2000,
         and in the case of Listed Data Customers, 31st December 2001, whichever
         is the earlier. For the avoidance of doubt:

         (a)      where used in this  clause 5.21  "termination"  shall occur at
                  the point in time at which a Listed Data  Contract or a Listed
                  Voice  Contract  shall come to an end either by  expiration of
                  its fixed term or, where the relevant contract continues until
                  due notice to terminate has been given in accordance  with its
                  terms by one party to the other or others,  the date of expiry
                  of such notice;

         (b)      this  clause  5.21  shall not  operate  so as to  prevent  the
                  Company from:

                  (i)      using any assets  owned by it in the  United  Kingdom
                           itself to provide or deliver  Voice  Services or Data
                           Services  to Listed  Voice  Customers  or Listed Data
                           Customers unless it does so directly or indirectly in


                                       23
<PAGE>

                           conjunction  with AUCS and/or AUCS Voice  Platform or
                           the AUCS Data Platform (as the case may be)

                  (ii)     offering  Voice  Services or Data  Services to Listed
                           Voice  Customers or Listed Data Customers where those
                           services  are to be  delivered  other than by AUCS or
                           any third  party  through  the use of the AUCS  Voice
                           Platform or the AUCS Data Platform

5.22     For the  purposes of clause 5.21,  the  expression  "SOLICIT"  shall be
         deemed to include (without  limitation) any person referred to as being
         bound by the covenant in clause 5.23 using  information about customers
         which it may  obtain  through  providing  the  Voice  Services  or Data
         Services,  or approaching  such customers  (whether or not requested by
         customers to do so) without the prior knowledge of a member of the AT&T
         Group.

5.23     The  Purchaser  shall not (and shall  procure  that the Company and the
         members of its Group from time to time shall not) disclose to any third
         party any  information  whatsoever  concerning  Listed Data  Customers,
         Listed Data Contracts,  Listed Voice Customers,  Listed Voice Contracts
         ("CONFIDENTIAL  AUCS  INFORMATION") and shall use their best endeavours
         to put in place as soon as possible  such  security  measures as may be
         necessary to prevent such  disclosure or otherwise  allow access to the
         same.

5.24     The  restriction  in clause 5.23 shall not apply to  Confidential  AUCS
         Information which:

         (a)      is required for the  efficient  delivery by AT&T or members of
                  the AT&T  Group of Voice  Services  and/or  Data  Services  to
                  Listed Voice  Customers or Listed Data  Customers  pursuant to
                  the Listed Voice Contracts or Listed Data Contracts; or

         (b)      has become generally available to the public without breach of
                  the provisions of clause 5.23 by the receiving party; or

         (c)      with the prior written  consent of a member of the AT&T Group;
                  or

         (d)      is legally in the possession of the Purchaser or any member of
                  its Group prior to the date of this Agreement  (without breach
                  of confidentiality),  as evidenced by its own written records,
                  but excluding information disclosed by the Vendors pursuant to
                  the  Confidentiality  Agreement  between the Purchaser and J P
                  Morgan Securities Limited dated 25 May 1999.

5.25     Where  disclosure of  Confidential  AUCS  Information is permitted,  it
         shall be disseminated  only to those of the receiving party's employees
         who have a genuine  need to know the same and subject to the  condition
         that such employees are advised of the  obligations of  confidentiality
         assumed by the Purchaser under this Agreement.

5.26     The Vendors are prepared to finance and shall  reimburse  the Purchaser
         for   outplacement   counselling   up  to  a  maximum   total  cost  of
         (pound)150,000  (plus VAT)  within 10  Business  Days of receipt by the


                                       24
<PAGE>

         Vendors  of a valid VAT  invoice  from the  relevant  provider  for any
         Employees who are made redundant by the Purchaser at any time following
         Completion and before 31st December 2000. The Purchaser  shall keep the
         Vendors informed of any proposals or consultations proposed in relation
         to such  redundancies and shall only seek  reimbursement of the cost of
         such   outplacement  and  counselling  to  the  extent  reasonable  and
         appropriate  to the seniority of the relevant  Employees and consistent
         with the practices of the AT&T Group in the United Kingdom prior to the
         Completion  Date.  The  Vendors  shall  provide  to the  Purchaser,  on
         request, the names of any relevant person employed by the AT&T Group in
         the United  Kingdom  who the  Vendors  reasonably  believe  may wish to
         employ  any  Employee  made or  proposed  to be made  redundant  by the
         Purchaser in the period to 31 December 2000.

5.27     The Vendors and the  Purchaser  shall  cooperate  after  Completion  to
         procure that the benefit of the Company's  existing  arrangements  with
         American  Express  for  the  provision  of  credit  cards  to  selected
         Employees  ("AMEX  Arrangements")  are  continued  for at least 90 days
         after  Completion  and  cooperate to ensure  that,  as soon as possible
         after  Completion,  the relevant  contracts  which  constitute the AMEX
         Arrangements  are terminated or novated to the Purchaser or its nominee
         as appropriate.  Pending such novation or the  cancellation of the AMEX
         Arrangements,  the Purchaser  shall indemnify the Vendors and any other
         members of the AT&T Group  against any  liabilities,  costs,  claims or
         damages which such entities may incur by reason of the  continuation of
         AMEX Arrangements. For the avoidance of doubt, any continued support by
         the Vendors or the AT&T Group of the AMEX Arrangements after Completion
         shall be considered Assurances for the purpose of clause 5.17.

5.28     From the date of  Completion  to 31st  December  2000,  the Vendors and
         members of the AT&T Group may enter 3 year  contracts to purchase  from
         time   to   time   from   any   member   of   the   Guarantor's   Group
         telecommunications lit fibre on any portion of the Guarantor's European
         Circe Network then in  commercial  operation,  in accordance  with that
         Group  member's  then current terms and  conditions  for supply of such
         fibre,  for their own use in the conduct of their  business and not for
         resale,  sub-lease,  sub-licence  or transfer  whatsoever  to any other
         entity  provided,  however,  that they may  transfer  such fibre to any
         company  within  the AT&T  Group.  The  price for such  fibre  shall be
         equivalent to 90% of the "Average  Market  Price".  For the purposes of
         this Agreement,  "Average Market Price" shall mean the average publicly
         quoted price being charged for  substantially  equivalent  fibre by the
         following companies:  MCI Worldcom,  Inc., KPN Qwest B.V., COLT Telecom
         Group Plc and Global Telesystems Group, Inc. at the date of purchase of
         such fibre.  Such price shall be  calculated in GBP by the Purchaser at
         the date of purchase of such fibre using,  if required,  the  Financial
         Times spot currency exchange rates.

5.29     In  connection  with  ancillary   transitional   support  matters,  the
         provisions of schedule 10 shall apply.



                                       25
<PAGE>

5.30     The Vendors shall  indemnify the Purchaser (for itself and on trust for
         the Company) against any loss, cost,  expense or liability  suffered or
         incurred by the Company arising from or in connection with:

         (a)      the termination of an agreement dated 23 November 1998 between
                  Cable  &  Wireless  Communications  Services  Limited  and the
                  Company relating to International Facilities Access;

         (b)      the  sale of  equipment  pursuant  to an  agreement  dated  11
                  December 1998 between X-TANT  Limited AT&T ISTEL,  NTL Inc and
                  the Company;

         (c)      the  termination  on or  before  Completion  of any  agreement
                  pursuant to or in contemplation of the Carve Out Agreements or
                  pursuant to or in contemplation of the transfer by the Company
                  to AT&T  GME of any  business  or  asset  to AT&T  GME (to the
                  extent  that the  Company  is not  indemnified  by AT&T GME in
                  respect thereof).

5.31      (a)     The Vendors  shall,  on demand,  reimburse the Company for the
                  rental costs  payable by it pursuant to the lease of 33 Acacia
                  Road  identified  in  Section  16  of  Part  A of  Schedule  2
                  ("LEASE")for the remainder of the current term of the Lease to
                  23 August 2000.

         (b)      On or before the third business day prior to the date on which
                  notice of renewal is due in respect of the Lease:

                  (i)      the  Vendors  shall  place the Company in funds in an
                           amount of  (pound)152,239.15  together with an amount
                           equal to employer's  national insurance in respect of
                           such amount (ie. grossed-up); and

                  (ii)     the Purchaser  shall place the Company in funds in an
                           amount of  (pound)38,059.79  together  with an amount
                           equal to employer's  national insurance in respect of
                           such amount (ie. grossed-up); and

                  (iii)    subject to receipt of the amounts  referred to in (i)
                           and  (ii),  the  Purchaser  shall  procure  that  the
                           Company pays such amounts (net of tax and  employer's
                           national  insurance) to David Robertson provided that
                           David  Robertson  is still an employee of the Company
                           at that time.

5.32     It is  acknowledged  that legal  title to the leases of certain  access
         circuits  ("ACCESS  CIRCUITS")  which were used in connection  with the
         BCSE business (which was sold by AT&T ISTEL to the Company on 1 January
         1998) remain vested in AT&T ISTEL although beneficial ownership of them
         was  passed  to the  Company  at the  time  of  sale  of the  business.
         Accordingly   the  parties  shall  use  their   respective   reasonable
         endeavours  to  transfer  the  leases of the  Access  Circuits  and the
         Purchaser  shall  indemnify  the Vendors (as  trustees  for AT&T ISTEL)
         against all costs, expenses, liabilities or charges arising under them.

5.33     The Vendors  will use  reasonable  endeavours  to procure  that Concert
         Communications  Limited ("CONCERT") enters into a new contract with the
         Company for the  provision by the Company to it of FCS and ATM services


                                       26
<PAGE>

         to commence  upon the expiry of the current  contract for such services
         between the Company and AT&T GME at the end of March 2000.  The Vendors
         shall  furthermore  use reasonable  endeavours to procure that any such
         negotiations  are  undertaken  in good faith with pricing  levels being
         dependant upon contract length and service level commitments and in the
         event that a migration plan onto a Concert service is proposed then the
         Vendors  shall use  reasonable  endeavours  to procure  that Concert is
         responsible  for any  applicable  cancellation  costs  incurred  by the
         Company arising directly from that migration plan.

5.34     The Vendors  will use  reasonable  endeavours  procure that the current
         Data Connect  Agreement  between  AT&T Corp.  and the Company is varied
         with effect from Completion to permit the following data access through
         the applicable firewall namely:

         (a)      GBP Data;

         (b)      GSMS access for support;

         (c)      customer database access;

         (d)      BASE access; and

         (e)      e-mail connectivity (for 90 days) or such longer period as the
                  parties shall agree in accordance with clause 5.36.

5.35     The  Vendors  will  use  reasonable   endeavours  to  procure  that  an
         appropriate  contractual  arrangement  is  put  in  place  as  soon  as
         practicable after Completion  between the Company and X-TANT Limited in
         relation to (1) accessing  the RACAL ISDN DAPS (a switching  device) on
         node sites and/or  customer sites by use of the X-TANT X.25 Network and
         (2) CMS 400 management system access.

5.36     The Purchaser  shall be entitled to use the att.com  domain name suffix
         for up to 90 days  from  Completion.  In the event  that the  Purchaser
         notifies  the Vendors not later than 75 days from  Completion  that the
         Company  may be unable to  transition  to an  alternative  domain  name
         system  within  90  days  of  Completion  then  the  Vendors  will  use
         reasonable  endeavours to assist the Company in attempting to obtain an
         extension of the timeframe  for cessation of use of the att.com  domain
         name suffix.

5.37     The Vendors will  indemnify the Purchaser  (for itself and on trust for
         the Company) against:

         (a)      any claims  brought  against the Company  which  relate to the
                  travel and low speed data network business sold by the Company
                  (and AT&T ISTEL) to X-TANT  Limited  except insofar as (unless
                  within   subclause  (b)  below)  such  claims  relate  to  the
                  activities  of the Company in relation to the period after the
                  sale of such business; and



                                       27
<PAGE>

         (b)      any claims  brought  against the Company which relate to those
                  activities   comprised   within   the   agreements   for   the
                  reorganisation of Transitional Services between:

                  (i)      AT&T GME and X-TANT Limited dated September 1999; and

                  (ii)     AT&T ISTEL and X-TANT Limited dated September 1999;

                  in relation  to the period  from 11  December  1998 (being the
                  date of sale of the said business to X-TANT) to date.

5.38     It is  acknowledged  by the  Company  and the Vendors (on behalf of the
         AT&T Group) that each  control  Indefeasible  Rights of Use ("IRUS") in
         Transatlantic  Voice Traffic half  channels  which connect with IRUs of
         the other party. It is further acknowledged that if either party ceases
         to  operate  a half  channel  connected  to the  other  party  then the
         remaining party may have a stranded  asset,  namely an IRU half channel
         that would incur  operating  costs with no revenues.  In order to avoid
         such an  occurrence  the Vendors and the Purchaser  shall  negotiate in
         good faith in order to endeavour that neither party has stranded assets
         comprising  unusable IRU half  channels and in this regard it is agreed
         by the parties that they will engage in meaningful  discussions  with a
         view  to  resolving  any  such  potential  issues  within  90  days  of
         Completion  with a final date for  resolution  (ie. that no IRU or half
         channels remain or are stranded  assets) of such potential issues by 30
         September  2000.  Such  discussions  will at all times be  conducted on
         behalf each party by persons who are  appropriately  empowered  to make
         decisions with a view to resolving potential issues.

5.39     The Vendors will  indemnify the Purchaser  (for itself and in trust for
         the  Company)  against any claim that the  Company was not  entitled to
         licence  the MAXM  software  to AUCS such  indemnity  being  limited in
         aggregate to the sum of (pound)135,000. This indemnity shall only apply
         insofar as such claims for infringement are brought against the Company
         by 31 December 2001.

5.40     The Vendors will  indemnify the Purchaser  (for itself and in trust for
         the Company)  against costs incurred by the Purchaser or the Company up
         to the aggregate sum of $1 million  relating  directly to the necessity
         to replace the whole roof  membrane of Quadrant  House  insofar as such
         replacement arises from the diesel oil spillage which occurred in 1998.
         Such indemnification by the Vendors is subject to:

         (a)      the Company not having the right to claim under any applicable
                  insurance policy; and

         (b)      the  Vendors at all times being  consulted  in relation to the
                  conduct of claims in relation to the loss.

         This  indemnity  shall cease to apply  insofar as the Company  fails to
         undertake  normal  maintenance  of the  roof  (to the  extent  that the
         Company is legally  responsible for such maintenance) or the Company or
         the Purchaser fail to act in good faith in respect of such matters.



                                       28
<PAGE>

5.41     The Vendors  will  indemnify  the  Purchaser  against the amount of any
         licence  or  licence  transfer  fee in excess of  $150,000  payable  to
         Saville  by  the  Company  in   consideration   of  their   granting  a
         non-exclusive  non-transferable  licence in favour of the  Company as a
         non AT&T Group entity post  Completion  in relation to the period up to
         31 December 2000. Support charges payable to Saville by the Company are
         outside the ambit of this indemnity.

5.42     The Vendors shall  indemnify the Purchaser (for itself and in trust for
         the Company) against all cost, expense or liability  (excluding loss of
         profit) suffered or incurred by the Company arising from the relocation
         of  any   telecommunications   switches  or  other   telecommunications
         equipment  situated in Summit  House,  70 Wilson  Street and 50 Worship
         Street,  London  if such  relocation  is  required  as a result  of any
         enforcement action taken or formally  threatened by a planning or other
         competent  body or authority.  The maximum  aggregate  liability of the
         Vendors pursuant to this clause 5.41 shall be $100,000.

         PRIVATE TRANSIT AGREEMENT OPTION

5.43     The  Guarantor  shall be granted an option  ("OPTION"),  which shall be
         assignable to any of its subsidiaries,  to enter into a Private Transit
         Agreement ("PTA") with AT&T Internet Services ("AT&T Internet").

5.44     The key terms of this PTA shall be as follows:

         (a)      the Guarantor and/or one of its  subsidiaries  will enter into
                  the PTA for a 60 month "Initial Term" for a minimum of one OC3
                  at one access point to AT&T's network.

         (b)      the  Guarantor  and/or  its  subsidiaries  will enjoy the Best
                  Price  available from AT&T Internet upon entering into the PTA
                  (currently  calculated to be $55k per month for the OC3 access
                  speed).

         (c)      during the Initial  Term,  whenever  the  Guarantor  wishes to
                  upgrade  from its OC3 access to a higher  speed  OC(X) port it
                  can do so and then  enjoy the Best Price  available  from AT&T
                  Internet at the time of the upgrade.

         (d)      AT&T Internet shall act in good faith in determining the "Best
                  Price". "Best Price" shall be obtained by:

                  (i)      AT&T Internet applying the pricing  methodology which
                           is  consistent  with  that used by AT&T  Internet  to
                           arrive at the initial OC3 price  (currently  $55k per
                           month); and

                  (ii)     AT&T Internet applying the lowest port price given in
                           an agreement to any of AT&T Internet's  customers who
                           have   ordered   substantially   the  same  MIS  port
                           bandwidth as the  Guarantor and who have ordered this
                           bandwidth  for the same or  similar  initial  service
                           period,



                                       29
<PAGE>

         (e)      new MIS access ports or upgrades  which the  Guarantor  and/or
                  its  subsidiaries  order  during the Initial Term will also be
                  offered to the Guarantor  and/or its  subsidiaries at the Best
                  Price (as defined in 3 above),

         (f)      the  Guarantor  has the right to request a price review at the
                  13th,  25th,  37th and 49th months (each, a "Review Month") of
                  the 60 month term of the PTA. Only MIS ports or upgrades which
                  have been in service for at least twelve  months at the Review
                  Month will be capable of being reviewed,

         (g)      modified   prices   offered  to  the   Guarantor   and/or  its
                  subsidiaries  at a Review Month shall be at the Best Price (as
                  defined in 3 above),

         (h)      should AT&T  Internet  not be able to reduce port charges in a
                  review in (f)  above,  the  Guarantor  shall have the right to
                  terminate  the PTA in  relation  to the  specific  port  which
                  cannot be reduced in price.

5.45     The  Guarantor  may at  anytime  during  the 60  day  period  following
         execution  of this  Agreement  require  the  Vendors to use  reasonable
         endeavours  to procure that the  Guarantor may sign an Option with AT&T
         Internet which  incorporates  the provisions  contained in clauses 5.43
         and 5.44 and the terms and conditions as attached as Appendix B.

         BT POOLING

5.46     (a)      The  provisions  of this  clause 5.46 relate to the BT digital
                  pooling  arrangements  between  British Telecom plc ("BT") and
                  the   Company   (DatRoom   section   VIII,   file  8.5.10  and
                  Supplemental   Data  Room  file  3.19)  ("BT  DIGITAL  POOLING
                  ARRANGEMENTS")  under which the  Company  has certain  minimum
                  purchase obligations which are as follows:

                  (i)      for 2000  and  2001,  a  requirement  to reach  2,250
                           pooled circuits with a one off penalty of(pound)1,300
                           per circuit not purchased payable on 31.12.01;

                  (ii)     for 2000 through to 2003, a minimum of 1,650 circuits
                           with  a  penalty  of   (pound)835   per  circuit  not
                           purchased  payable  per  quarter up to 31st  December
                           2003.

         (b)      Subject to the following  provisions of this clause 5.46,  the
                  Vendors  will  indemnify  the  Purchaser  (for  itself  and as
                  trustee for the Company) in a sum equal to all penalties  that
                  are payable in respect of any shortfall in circuits  under the
                  minimum  purchase  obligations  incurred at any time after 1st
                  January 2000.

         (c)      The  obligation of the Vendors  under clause  5.46(b) above is
                  strictly subject to the following:

                  (i)      the Company not being permitted to purchase  circuits
                           from another circuit provider except in circumstances
                           where the  circuits  provided  under  the BT  digital


                                       30
<PAGE>

                           pooling  arrangements  do not  have  the  appropriate
                           technical characteristics for the specific purpose;

                  (ii)     the Company and the Purchaser using their  respective
                           reasonable   endeavours  to  maximise  their  use  of
                           circuits under the BT digital pooling arrangements;

                  (iii)    compliance  by the Company and the Vendors with their
                           obligations under clause 5.46(d)(i).

                  (iv)     the  Purchaser  and  the  Company  each  keeping  the
                           Vendors informed of all material correspondence under
                           the BT digital pooling arrangements.

         (d)      (i)      Each of the  Purchaser,  the  Company and the Vendors
                           shall use all reasonable  endeavours to work together
                           to mitigate the overall potential liability under the
                           BT  digital  pooling   arrangements   and  engage  in
                           discussions  with BT to  renegotiate  the BT  digital
                           pooling  arrangements in such a way as to reduce both
                           the minimum purchase obligation and the amount of the
                           penalties payable.

                  (ii)     If  the  Vendors  so  elect,  the  Vendors  shall  be
                           entitled   to   take  on  a   leading   role  in  all
                           discussions,  negotiations or correspondence  with BT
                           in relation to the BT digital  pooling  arrangements,
                           provided  that they  consult  with the  Company  on a
                           regular  basis and keep it informed  of all  material
                           developments  in such  discussions,  negotiations  or
                           correspondence  and  allow  a  representative  of the
                           Purchaser to be present.

                  (iii)    The Purchaser and the Company shall allow the Vendors
                           reasonable access to key personnel of the Company for
                           the  purpose of giving  effect to the  provisions  of
                           this clause 5.46.

         (e)      The Vendors  shall have no  liability  in respect of any claim
                  under clause  5.46(b) unless that claim when  aggregated  with
                  all other  claims for any  calendar  year  exceeds  the sum of
                  (pound)75,000  (in which case the Vendors  shall be liable for
                  the full amount of such claims).

         (f)      The total  liability of the Vendors under clause 5.46(b) shall
                  not exceed(pound)6,200,000.

         (g)      No claim shall be brought under clause  5.46(b)  unless notice
                  in writing  specifying the penalties payable has been given to
                  each of the Vendors by 31st March 2004 and any such claim that
                  may have  been  made by such  date  shall  (if it has not been
                  previously satisfied,  settled or withdrawn) be deemed to have
                  been waived or withdrawn on the  expiration of 12 months after
                  the date it was made unless court proceedings in respect of it
                  shall then have been commenced against the Vendors.



                                       31
<PAGE>

         (h)      The  provisions of this clause 5.46 shall apply only to the BT
                  digital pooling arrangements and not to any new or replacement
                  arrangements whether with BT or any other party.

         (i)      The Vendors shall have no liability  under this clause 5.46 to
                  the  extent  that such  liability  relates  to any  variation,
                  modification,  alteration  or  amendment  to  the  BT  digital
                  pooling arrangements made without the prior written consent of
                  the Vendors.

         (j)      No claim shall be made and the Vendors shall have no liability
                  under the Warranties in respect of any penalty paid or payable
                  under the BT digital pooling agreement.

         NTL

5.47     (a)      The  provisions  of this  clause  5.47  relate  to a  contract
                  between the Company and NTL for the purchase by the Company of
                  E1  circuits  (Data  Room  section  VIII,  file  8.5.6)  ("NTL
                  CONTRACT")   under  which  the  Company  may  face   penalties
                  ("PENALTIES") if certain minimum purchase  obligations are not
                  met by stated dates.

         (b)      Subject to the following  provisions of this clause 5.47,  the
                  Vendors  will  indemnify  the  Purchaser  (for  itself  and as
                  trustee for the Company) in a sum equal to all Penalties  that
                  are payable.

         (c)      The  obligation of the Vendors  under clause  5.47(b) above is
                  strictly subject to the following:

                  (i)      compliance  by the Company and the Vendors with their
                           obligations under clause 5.47(d);

                  (ii)     the  Purchaser  each keeping the Vendors  informed of
                           all material correspondence under the NTL Contract.

         (d)      Each of the  Purchaser,  the Company and the Vendors shall use
                  all  reasonable  endeavours  to work  together to mitigate the
                  overall potential liability.

         (e)      The total  liability of the Vendors under this clause  5.47(b)
                  shall not exceed(pound)700,000.

         (f)      No claim shall be brought under clause  5.47(b)  unless notice
                  in writing  specifying the Penalties payable has been given to
                  each of the  Vendors  by 31  December  2000 and any such claim
                  that may have been made by such date shall (if it has not been
                  previously satisfied,  settled or withdrawn) be deemed to have
                  been waived or withdrawn on the  expiration  of 6 months after
                  the date it was made unless court proceedings in respect of it
                  shall then have been commenced against the Vendors.


                                       32
<PAGE>


         (g)      The provisions of this clause 5.47 shall apply only to the NTL
                  Contract  and  not to  any  new  or  replacement  arrangements
                  whether with NTL or any other party.

         (h)      The Vendors  shall have no liability  under this clause to the
                  extent  that  such   liability   relates  to  any   variation,
                  modification, alteration or amendment to the NTL Contract made
                  without the prior written consent of the Vendors.

         (i)      No claim shall be made and the Vendors shall have no liability
                  under the Warranties in respect of any penalty paid or payable
                  under the NTL Contract.

5.48     The  Purchaser  agrees that the  provisions  for the  protection of the
         Vendors set out in paragraphs 1.1, 4.1, 5, 9 and 10 shall apply mutatis
         mutandis to any claim for  indemnity  pursuant to clauses  5.37,  5.39,
         5.40, 5.41, 5.42, 5.46 and 5.47.

6        WARRANTIES

6.1      Subject always to the provisions of Schedule 6, in consideration of the
         Purchaser entering into this Agreement:

         (a)      the Vendors  warrant to the Purchaser  (subject to clause 6.2)
                  that  the  Statement  set  out  in  Schedule  5 are  true  and
                  accurate; and

         (b)      where any  statement  in Schedule 5 is qualified as being made
                  "so far as the  Vendors  are  aware"  or "to  the  best of the
                  knowledge,  information  and  belief  of the  Vendors"  or any
                  similar  expression,  such  statement  shall be deemed to have
                  been made by the Vendors after reasonable  enquiry in relation
                  to the  matters in  question  by the  Vendors  of James  Allan
                  Macfarlane  (Commercial   Director),   Mark  Madden  (Sales  &
                  Marketing Director), Julie Partridge (Human Resources),  Roger
                  Paul (Network),  Robin Anthony (Finance Manager), David Bonner
                  (IT Director) and David Robertson (Managing Director).

6.2

         (a)      the  Warranties  are  qualified  (unless  there is a  specific
                  acknowledgment  in the Disclosure Letter from the Vendors that
                  they  are not so  qualified)  to the  extent,  but only to the
                  extent,  of those matters  fairly  disclosed in the Disclosure
                  Letter and for this purpose "FAIRLY DISCLOSED" means disclosed
                  in such  manner and in such  detail as to enable a  reasonable
                  purchaser  to  make  an  informed  and   reasonably   accurate
                  assessment of the matter concerned.

         (b)      each of the paragraphs in Schedule 5:

                  (i)      shall be  construed  as a  separate  and  independent
                           representation and/or warranty; and

                  (ii)     save  as   expressly   otherwise   provided  in  this
                           Agreement,  shall not be limited by  reference to any
                           other  paragraph  in  Schedule  5  or  by  any  other
                           provision of this Agreement,



                                       33
<PAGE>

                  and the  Purchaser  shall have a  separate  claim and right of
                  action  in  respect  of every  Relevant  Breach  of each  such
                  representation or warranty.

6.3      All claims by the Purchaser for damages or  compensation  in respect of
         any  Relevant  Breach  shall  be  subject  to the  provisions  for  the
         protection  of the Vendors in Schedule 6 unless  specifically  provided
         otherwise  or if there shall have been fraud on the part of the Vendors
         or if the Vendors shall have deliberately  concealed from the Purchaser
         facts known to them which a purchaser of the Company  would  reasonably
         expect to be told for the purpose of making an informed  assessment  of
         the assets and liabilities, financial position, profits and losses, and
         prospects of that entity and of the rights attaching to the Shares.

6.4      The Warranties  shall not in any respect be extinguished or affected by
         Completion.

6.5      The Vendors  accept that the Purchaser is entering into this  Agreement
         in reliance upon each of the Warranties.

6.6      The Purchaser warrants to the Vendors that:

         (a)      the Purchaser has obtained all  corporate  authorisations  and
                  all other applicable  governmental,  statutory,  regulatory or
                  other  consent,  licences,  waivers or exemptions  required to
                  empower it to enter into and to perform its obligations  under
                  this  Agreement  and each  document to be executed by it at or
                  before Completion;

         (b)      the  Purchaser's  obligations  under this  Agreement  and each
                  document to be executed at or before  Completion  are, or when
                  the relevant  document is  executed,  will be  enforceable  in
                  accordance with their terms;

         (c)      the Purchaser is a limited company  incorporated under English
                  law  and  has  been  in   continuous   existence   since   its
                  incorporation.

7        TAX COVENANT

7.1      The Vendors hereby  covenant with the Purchaser in the terms of the Tax
         Covenant, the provisions of which shall take effect from Completion.

8        ANNOUNCEMENTS

8.1      Subject to clause 8.2, save as and to the extent expressly  required by
         law or any securities  exchange or regulatory or  governmental  body to
         which either of the parties is subject,  all announcements or circulars
         by, of or on behalf of either of the parties hereto and relating to the
         sale and purchase hereunder shall be in terms to be approved in writing
         by the parties in advance of issue.

8.2      To the extent that any  announcement  or circular is required by law or
         any securities exchange or regulatory or governmental body ("A RELEVANT
         REQUIREMENT")  to be made by either of the parties,  the party which is
         required to make such announcement shall:



                                       34
<PAGE>

         (a)      notify the other party of such relevant requirement as soon as
                  is  reasonably  practicable  and in any event  prior to making
                  such announcement or circular;

         (b)      consult   with  the  other  party  over  the  content  of  the
                  announcement  or  circular  with  a  view  to  minimising  the
                  information relating to such sale and purchase to the greatest
                  possible extent  compatible with the relevant  requirement and
                  otherwise to agree the content of the announcement or circular
                  as far as possible.

9        RELEASES, WAIVERS ETC., BY THE PURCHASER

9.1      Each  party  may,  in its  discretion,  in  whole  or in part  release,
         compound or compromise, or waive its rights or grant time or indulgence
         in respect  of, any  liability  to it under  this  Agreement.  Any such
         waiver  shall be  effective  only if in writing  signed by the party or
         parties against whom enforcement is sought.

9.2      Subject  to clause  9.1,  neither  the single or  partial  exercise  or
         temporary or partial waiver by a party of any right, nor the failure by
         a party to  exercise  in whole or in part any right or to insist on the
         strict  performance  of  any  provision  of  this  Agreement,  nor  the
         discontinuance, abandonment or adverse determination of any proceedings
         taken by a party to  enforce  any  right  or any such  provision  shall
         operate as a waiver of, or preclude any exercise or  enforcement or (as
         the case may be) further or other exercise or enforcement by a party of
         that or any other right or provision.

9.3      All references in clause 9.2 to:

         (a)      any right shall include any power,  right or remedy  conferred
                  by  this  Agreement  on,  or  provided  by  law  or  otherwise
                  available to a party; and

         (b)      any failure to do something  shall  include any delay in doing
                  it.

9.4      The  giving by a party of any  consent to any act which by the terms of
         this Agreement requires such consent shall not prejudice the right of a
         party to withhold or give consent to the doing of any similar act.

10       NOTICES

10.1     Except as otherwise provided in this Agreement, every notice under this
         Agreement  shall be in writing  and shall be deemed to be duly given if
         it (or the envelope  containing  it) identifies the party to whom it is
         intended to be given as the addressee and:

         (a)      it is delivered by being handed  personally  to the  addressee
                  (or,  where the  addressee  is a  corporation,  any one of its
                  directors or its secretary); or

         (b)      it is  delivered  by  being  left  in a  letter  box or  other
                  appropriate   place  for  the   receipt   of  letters  at  the
                  addressee's authorised address; or



                                       35
<PAGE>

         (c)      the envelope  containing  the notice is properly  addressed to
                  the addressee at his authorised address and duly posted by the
                  recorded  delivery  service (or by airmail  registered post if
                  overseas) or the notice is duly transmitted to that address by
                  facsimile transmission,

                  and, in proving the giving or service of such notice, it shall
                  be conclusive evidence to prove that the notice was duly given
                  within the meaning of this clause 10.1.

10.2     A notice  sent by post (or the  envelope  containing  it)  shall not be
         deemed to be duly posted for the purposes of clause 10.1((c)) unless it
         is put into the  post  properly  stamped  or with all  postal  or other
         charges in respect of it otherwise prepaid.

10.3     For the  purposes  of this  clause  10 the  authorised  address  of the
         Vendors and the Purchaser shall be:

         (a)      the Vendors:

                  Thomas F. Brown (AT&T Legal)
                  295 North Maple Avenue
                  Basking Ridge
                  New Jersey
                  07920-1002
                  Tel: 001 908 221 4208
                  Fax: 001 908 221 4409

                  Richard Jephcott (M&A Director)
                  Highfield House
                  Headless Cross Drive
                  Headless Cross
                  Redditch
                  B97 5EQ
                  Tel: 01527 493538
                  Fax: 01527 493940

         (b)      the Guarantor:

                  Sheldon   Goldman   (Executive   Vice   President,    Business
                  Development)  or James  Prenetta  (Senior Vice  President  and
                  General Counsel)
                  Viatel, Inc.
                  685 Third Avenue
                  24th Floor
                  New York
                  NY, 10017
                  USA



                                       36
<PAGE>

         (c)      the Purchaser:

                  Sheldon   Goldman   (Executive   Vice   President,    Business
                  Development)  or James  Prenetta  (Senior Vice  President  and
                  General Counsel)
                  Viatel, Inc.
                  685 Third Avenue
                  24th Floor
                  New York
                  NY, 10017
                  USA

10.4     Any notice duly given within the meaning of clause 10.1 shall be deemed
         to have been both given and received:

         (a)      if it is  delivered  in  accordance  with clause  10.1((a)) or
                  10.1((b)), on such delivery;

         (b)      if it is duly posted or transmitted in accordance  with clause
                  10.1((c))  by any of the  methods  therein  specified,  on the
                  second (or, when sent airmail,  fifth)  business day after the
                  day of  posting  or (in the  case of a notice  transmitted  by
                  facsimile  transmission)  upon  receipt  by the  sender of the
                  correct answer back or transmission report.

10.5     For the purposes of this clause 10 "NOTICE"  shall include any request,
         demand, instruction, communication or other document.

11       ENTIRE AGREEMENT

11.1     This Agreement,  the Disclosure  Letter and the documents in the agreed
         form referred to in this Agreement ("ANCILLARY  DOCUMENTS")  constitute
         the entire  agreement  between  the  parties in relation to the subject
         matter covered and supersede any previous agreement between the parties
         in  relation  to such  matters  which  shall  cease to have any further
         effect. It is agreed that:

         (a)      no party has entered into this  Agreement in reliance upon any
                  statement,  representation,  warranty or undertaking  which is
                  not set out or referred to in this  Agreement or the Ancillary
                  Documents;

         (b)      in the  absence  of fraud,  no party  will have any  remedy in
                  respect   of  any  untrue   statement,   made  to  it  or  its
                  representatives  or  agents,  prior  to this  Agreement  being
                  entered  into and  upon  which it or they  relied  other  than
                  warranties  or  undertakings  set out or  referred  to in this
                  Agreement or the Ancillary Documents; and

         (c)      this clause  shall not exclude any  liability  for  fraudulent
                  misrepresentation.

12       ALTERATIONS

12.1     No purported  alteration of this Agreement shall be effective unless it
         is in  writing,  refers  specifically  to  this  Agreement  and is duly
         executed by each party hereto.



                                       37
<PAGE>

13       SEVERABILITY

13.1     Each  provision of this  Agreement is severable  and distinct  from the
         others.  The  parties  intend  that every such  provision  shall be and
         remain valid and enforceable to the fullest extent permitted by law. If
         any such  provision  is or at any time  becomes to any extent  invalid,
         illegal or  unenforceable  under any enactment or rule of law, it shall
         to that extent be deemed not to form part of this Agreement but (except
         to  that  extent  in the  case  of that  provision)  it and  all  other
         provisions of this  Agreement  shall  continue in full force and effect
         and their validity,  legality and  enforceability  shall not be thereby
         affected or impaired,  provided that the operation of this clause would
         not negate the commercial  intent and purpose of the parties under this
         Agreement.

14       COUNTERPARTS

14.1     This  Agreement  may be  entered  into  in  the  form  of  two or  more
         counterparts  each  executed by one or more of the parties  but,  taken
         together,  executed by all and,  provided that all the parties so enter
         into  the  Agreement,  each of the  executed  counterparts,  when  duly
         exchanged or delivered,  shall be deemed to be an original,  but, taken
         together, they shall constitute one instrument.

15       PAYMENT OF COSTS

15.1     Each of the  parties  shall be  responsible  for his or its  respective
         legal  and  other  costs  incurred  in  relation  to  the  negotiation,
         preparation   and  completion  of  this  Agreement  and  all  Ancillary
         Documents.

16       SUCCESSORS AND ASSIGNS

16.1     This Agreement  shall be binding on and shall be for the benefit of the
         successors in title of each party.

16.2     Save as provided in clause  16.3,  none of the parties  hereto shall be
         entitled to assign the benefit of any rights under this Agreement.

16.3     The  benefit  but not the  burden  of this  Agreement  shall be  freely
         assignable  by any party and, in the event of any such  assignment  all
         references  in this  Agreement to such party shall be deemed to include
         its assigns provided that:

         (a)      such assignment is to a member of its Group; and

         (b)      if any such  assignee  ceases to be a member  of such  party's
                  Group (otherwise than by reason of such party ceasing to exist
                  by reason of any amalgamation or liquidation by way of solvent
                  reconstruction)  then such assignee shall immediately  further
                  assign the said benefit of this  Agreement to a company  which
                  is a member of such party's Group;

16.4     Subject to clauses  16.1 and 16.3,  a person who is not a party to this
         Agreement  (including any employee,  officer,  agent  representative or
         sub-contractor of either party) shall not have any right to enforce any
         term of this  Agreement  which  expressly or by  implication  confers a
         benefit on that person  without the express prior  agreement in writing
         of the parties which agreement must refer to this clause 16.4.



                                       38
<PAGE>

17       APPLICABLE LAW , SUBMISSION TO JURISDICTION AND DISPUTE RESOLUTION

17.1     This  Agreement  shall be governed by and construed in accordance  with
         English  law  and  the  parties  hereby  submit  to  the  non-exclusive
         jurisdiction  of the High Court of Justice in England and Wales for the
         purpose  of  hearing  and  determining  any  suit,  claim,   action  or
         proceedings  which  may  arise  out  of  or  in  connection  with  this
         Agreement.

17.2     Subject to clause 17.3,  prior to exercising any remedy available under
         this  Agreement or otherwise by law in respect of any breach or alleged
         breach of this Agreement or in respect of any other dispute arising out
         of this  Agreement,  the parties  shall  refer any such  dispute to the
         Negotiating  Teams who shall  co-operate  in good faith to resolve  the
         dispute as amicably as possible  within 20 business days of the dispute
         being  referred  to them.  In the event that they are unable to resolve
         such  dispute,  the parties shall be free to exercise any remedies that
         they may have under this Agreement or otherwise by law,  subject always
         to the terms of this Agreement.

17.3     clause 17.2 shall not apply to any dispute or claim  arising out of the
         agreement or  determination  of the Working Capital  Statement (save in
         the case of  manifest  error) or where a  specific  dispute  resolution
         mechanism  is  otherwise  specifically  provided for under the terms of
         this Agreement.

18       CONFIDENTIALITY

18.1     Each party shall treat as confidential  all  information  obtained as a
         result of entering into or performing this Agreement which relates to:

         (a)      the provisions of this Agreement;

         (b)      the negotiations relating to this Agreement; or

         (c)      any other party.

18.2     Notwithstanding  the  other  provisions  of this  clause,  a party  may
         disclose confidential information:

         (a)      if and to the extent required by law or for the purpose of any
                  judicial proceedings;

         (b)      if and to the extent  required by any  securities  exchange or
                  regulatory  or  governmental  body  to  which  that  party  is
                  subject,  whether or not the  requirement  for information has
                  the force of law;

         (c)      if and to the extent required to vest the full benefit of this
                  Agreement in that party;

         (d)      to its professional advisers, auditors and bankers;



                                       39
<PAGE>

         (e)      if and to the extent the  information has come into the public
                  domain through no fault of that party; or

         (f)      if and to the extent the other party has given  prior  written
                  consent to the disclosure.

         Any information to be disclosed pursuant to paragraphs (a) or (b) shall
         be disclosed only after consultation with the other parties.

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

19       TIME OF ESSENCE

19.1     Except as otherwise expressly provided,  time is of the essence of this
         Agreement.

20       EFFECT OF COMPLETION

20.1     Any provision of this Agreement and any other documents  referred to in
         it which is  capable  of being  performed  after but which has not been
         performed at or before  Completion  and all  Warranties  and covenants,
         indemnities  and  other  undertakings  contained  in  or  entered  into
         pursuant  to this  Agreement  shall  remain in full  force  and  effect
         notwithstanding Completion.

21       GUARANTEE

21.1     In  consideration  of the Vendors  selling the Shares and in particular
         (without  limitation) agreeing to perform their obligations pursuant to
         Schedule  8 (the  adequacy  of which  consideration  is  agreed  by the
         Guarantor),   the  Guarantor  hereby  unconditionally  and  irrevocably
         guarantees  to the  Vendors  the due and  complete  performance  by the
         Purchaser  of all of its  obligations  under  this  Agreement  (and any
         Ancillary Documents).  If the Purchaser defaults in the due performance
         of its obligations  under this Agreement (and any Ancillary  Documents)
         the Guarantor shall procure the performance of such  obligations by the
         Purchaser.

21.2     The Guarantor agrees that the Vendors shall be entitled to enforce this
         guarantee against the Guarantor as principal obligor and without making
         any demand on or taking any proceedings against the Purchaser and shall
         not be required before  enforcing this guarantee to pursue,  enforce or
         exhaust any other  right,  remedy or security  which it may have.  This
         guarantee  shall  continue  in full  force  and  effect  until  all the
         liabilities  and obligations of the Purchaser under this Agreement (and
         any Ancillary Documents) have been fully performed and discharged.

21.3     This  guarantee  shall  not be  affected  in any  way  by any  time  or
         indulgence granted to the Purchaser by the Vendors or by any variation,
         compromise or release of any of its  obligations  under this  Agreement
         (or any Ancillary Documents).

21.4     This guarantee  shall not be affected by the liquidation or dissolution
         of  the  Purchaser  or  by  the  appointment  of a  receiver  over  the
         undertaking,   property   or  assets  of  the   Purchaser   or  by  any
         circumstances  affecting the  obligations  of the Purchaser to meet its
         liabilities or by any alteration in the  constitution  of the Purchaser


                                       40
<PAGE>

         or by reason of any  change in the  interest  of the  Guarantor  in the
         Purchaser. If any such matters or any other act or event in consequence
         of which the Purchaser  loses its separate legal identity the Guarantor
         shall become liable for the  obligations  of the  Purchaser  under this
         Agreement (and any Ancillary Documents) as if it were a primary obligor
         provided that if the Purchaser  ceases to be a member of the same group
         as the Guarantor,  the Guarantor shall have no further obligation under
         this  clause  21 if  the  Guarantor  procures  that  a  member  of  the
         Purchaser's  Group  registered  in  England  and  Wales  and of no less
         financial  standing than the Guarantor as at the date of this Agreement
         and reasonably  satisfactory to the Vendors, enters into a guarantee on
         substantially  similar  terms to the terms of this clause 21 in respect
         of any remaining obligations of the Purchaser under this Agreement (and
         any Ancillary Documents).

21.5     This  guarantee  shall  be of a  continuing  nature  and  shall  not be
         considered  as  wholly  or  partially   satisfied  by  the  payment  or
         liquidation  at any time after the date of this Agreement of any sum of
         money for the time being due to the Vendors  but shall  extend to cover
         and be a security for all future sums of money at any time owing to the
         Vendors   under   this   Agreement   (and  any   Ancillary   Documents)
         notwithstanding any such payment or liquidation.

21.6     As a separate and independent stipulation the Guarantor agrees that any
         sum or sums of money intended to be the subject of this guarantee shall
         be recoverable  from the Guarantor as sole or principal  debtor even if
         they would not be recoverable from the Purchaser,  whether by reason of
         any legal  limitation,  disability,  incapacity or  liquidation  of the
         Purchaser  or any  other  fact or  circumstance  (whether  known to the
         Vendors  or not)  but  which  would  have  been  recoverable  from  the
         Guarantor  if it were the sole or  principal  debtor in respect of such
         liability in place of the Purchaser.

IN WITNESS whereof this Agreement has been entered into on the date appearing at
the beginning of this Agreement.




                                       41
<PAGE>



                                   SCHEDULE 1

                                   THE COMPANY

Date and place of incorporation:            15 July 1994, England

Registered number:                          2948988

Registered office:                          Quadrant House, Thomas More Square,
                                            17 Thomas More Street, London
                                            E1W 1YE

Authorised share capital:                   (pound)500,000,000 divided into
                                            500,000,000 shares of(pound)1 each

Issued share capital:                       186,028,208 ordinary shares fully
                                            paid held as follows:

                                            ACSI - 92,041,394

                                            Global - 93,986,814

Directors:                                  D.S. Hall, J.A.C. Macfarlane,
                                            R.J.M. Jephcott

Secretary:                                  G.P. Saunders

Auditors:                                   Pricewaterhouse Coopers

Bankers:                                    HSBC plc

Accounting reference date:                  31st December (to be changed to 29th
                                            February at Completion)

Subsidiaries:                               None



                                       42
<PAGE>



                                                              SCHEDULE 2

                                                         LEASEHOLD PROPERTIES
<TABLE>
<CAPTION>

                                                                Part A
                                                         Leasehold Properties
====================================================================================================================================
Number   Description          Proprietor    Date of       Parties to         Term and            Occupier(s)      Current Use
                                             Lease         Lease               rent

====================================================================================================================================
<S>     <C>                  <C>           <C>            <C>                <C>                 <C>         <C>
1       Unit 1, Centech,     Company       31.01.2000     (1) GLP            01.11.1999 -        Company     Development of
        North Moons                                       Intressenter AB    31.10.2004                      electronic products
        Moat Industrial                                   (2) Company
        Estate, Redditch                                                     (pound)25,000
- ------------------------------------------------------------------------------------------------------------------------------------
2       Unit 2, Centech      Company       31.01.2000     (1) GLP            01.10.1999 -        Company     Development of
        Park, Fringe                                      Intressenter AB    31.10.2004                      electronic products
        Meadow Road,                                      (2) Company
        North Moons                                                          (pound)17,350
        Industrial Estate,
        Redditch
- ------------------------------------------------------------------------------------------------------------------------------------
3       Unit 6 and 7         Company       2 leases       (1) Nortrust       15 years from 24    Company     Use as a switch site
        Maidwell Drive,                    dated          Nominees           24 June 1997                    providing voice and
        Shirley                            08.08.1997     Limited and                                        data telecommunications
                                                          (2) Company        6 -(pound)54,235
                                                                             7 -(pound)57,975

- ------------------------------------------------------------------------------------------------------------------------------------
</TABLE>



                                       43
<PAGE>


<TABLE>
<CAPTION>


====================================================================================================================================
Number   Description          Proprietor    Date of       Parties to         Term and            Occupier(s)      Current Use
                                             Lease         Lease               rent

====================================================================================================================================
<S>     <C>                  <C>           <C>            <C>                <C>                 <C>         <C>
4       Floors 1-8 The       Company       09.08.1996     (1) Trinity Tower  15 years from       Company     Offices
        Quadrant, Thomas                   (comprised     Investments        24.06.1996
        More Square,                       in 3 Leases)   Limited (2)
        London, E1 9YW                                    Company            Floors 1-5
                                                                             (pound)866,685
                                                                             Floor 6
                                                                             (pound)181,940
                                                                             Floors 7-8
                                                                             (pound)349,675
- ------------------------------------------------------------------------------------------------------------------------------------
5       Unit C, Plot 4,      Company       08.10.1997      (1) Wilson        25 years from 20    Company     Use as a switch site
        Phase III Meridian                                 Bowden            20 August 1997                  providing voice and
        Business Park,                                     Properties                                        data telecommunications
        Braunstone,                                        Limited (2)       (pound)64,125
        Leicestershire                                     Company
- ------------------------------------------------------------------------------------------------------------------------------------
6       Unit B, Bandstand    Company       21.07.1997      (1) Taylor        15 years from       Company     Use as a switch site
        Parkside Industrial                                Woodrow           21.07.1997                      providing voice and
        Estate, Leeds                                      Developments                                      data communications
                                                           Limited (2)       (pound)45,600
                                                           Company
- ------------------------------------------------------------------------------------------------------------------------------------
7       Part Second Floor,   Company       30.07.1996      (1) Marples       5 years from 30     Company     Offices
        Adlington Court                                    (Greencourts)     July 1996
        Phase 2,                                           Limited (2)
        Greencourts, 333                                   Company           (pound)26,000
        Styal Road,
        Wythenshawe,
        Manchester
- ------------------------------------------------------------------------------------------------------------------------------------
</TABLE>


                                       44
<PAGE>

<TABLE>
<CAPTION>


====================================================================================================================================
Number   Description          Proprietor    Date of       Parties to         Term and            Occupier(s)      Current Use
                                             Lease         Lease               rent

====================================================================================================================================
<S>     <C>                  <C>           <C>            <C>                <C>                 <C>         <C>
8       Ground, First,       Company       29.10.1996      (1) London Stock  expires             Company     Offices and switch for
        Second and Third                                   Exchange          21.03.2014                      telecommunications
        Floors Summit                                      Limited and (2)                                   equipment
        House, 70 Wilson                                   Company           (pound)1,094,394
        Street, London
- ------------------------------------------------------------------------------------------------------------------------------------
9       Car Parking          Company       29.10.1996      (1) London Stock  (pound)9000 -       Company     Car Parking Spaces
        Spaces Summit                                      Exchange          expires 21.03
        House, London                                      Limited           2014          (
                                                           2) AT&T (UK)
                                                           Holdings
                                                           Limited
- ------------------------------------------------------------------------------------------------------------------------------------
10      Lower Ground and     Company       Agreement       (1) London Stock  7.4.1997-           Company     Offices
        Basement Summit                    for lease       Exchange          21.3.2014
        House, London                      dated           Limited and (2)   (pound)63,189
                                           30.9.1997       Company
- ------------------------------------------------------------------------------------------------------------------------------------
11      Unit 1 Europa        Company       19.7.1996       (1) Heath         25.12.1994 -        Company     Use as a switch site
        Way,  Trafford                                     Investments       24.12.2019                      providing voice and
        Park, Manchester                                   Limited (2)                                       data telecommunications
                                                           Company           (pound)52,335
- ------------------------------------------------------------------------------------------------------------------------------------
12      Unit A, Gateway      Company                       (1) GLE Property  Expires            Company      Use as a switch site
        Centre, Butchers                   13.8.1999       Developments      29.7.2019                       providing  voice and
        Road, Newham                                       Limited and (2)   (pound)105,000                  data telecommunications
                                                           Company
- ------------------------------------------------------------------------------------------------------------------------------------
13      60 Melville Street,  Company       Registered      (1) TSB Group     26.3.1996 -         Company     Offices
        Edinburgh                          date            Pension Trust     20.3.2001
                                           2.7.1996        Limited (2)
                                                           Company.          (pound)21,338
- ------------------------------------------------------------------------------------------------------------------------------------
</TABLE>


                                       45
<PAGE>

<TABLE>
<CAPTION>

====================================================================================================================================
Number   Description          Proprietor    Date of       Parties to         Term and            Occupier(s)      Current Use
                                             Lease         Lease               rent

====================================================================================================================================
<S>     <C>                  <C>           <C>            <C>                <C>                 <C>         <C>
14      Unit 4, Queen        Company       Registered      (1) The Joint     28.8.1995 -         Company     Use as a switch site
        Annes Park,                        date            Properties        27.8.2020                       providing voice and
        Newbridge,                         10.5.19         Limited (2)                                       data telecommunications
        Edinburgh                                          Company           (pound)40,116
- ------------------------------------------------------------------------------------------------------------------------------------
15      Unit 22              Company       01.01.2000      (1)Julian John    6 months from       Company     Storage
        Colemeadow                                         Prouse (t/a       01.01.2000
        Road, North                                        JP Computers      (pound)1,000
        Moons Moat                                         (2) Company       per quarter
        Industrial Estate,
        Redditch
- ------------------------------------------------------------------------------------------------------------------------------------
16      33 Acacia Road,      Company       24.8.1999       (1) Felsa         24.8.99 -           David       Residential
        St Johns Wood,                                     Investments S.A.  23.8.2000           Robertson   accommodation
        London                                             (2) Company                           (employee
                                                                                                 of Company)

- ------------------------------------------------------------------------------------------------------------------------------------
</TABLE>





                                       46
<PAGE>




                                   SCHEDULE 2
<TABLE>
<CAPTION>

                                     Part B

- ------ ------------------------------ --------------------------- ---------------- ----------- --------------- ---------------------
       PROPERTY                       LANDLORD                    TENANT           TERM        RENT            OTHER TERMS
- ------ ------------------------------ --------------------------- ---------------- ----------- --------------- ---------------------
- ------ ------------------------------ --------------------------- ---------------- ----------- --------------- ---------------------
<S>    <C>                             <C>                        <C>              <C>         <C>             <C>
1      Fifth Floor The                 Company                    AT&T             3 years     (pound)320,873  As set out in the
       Quadrant, Thomas                                           ISTEL                                        Lease annexed to
       More Square, London                                                                                     the agreement for
                                                                                                               lease annexed hereto
- ------ ------------------------------ --------------------------  ---------------- ----------- --------------- ---------------------
- ------ ------------------------------ --------------------------  ---------------- ----------- --------------- ---------------------
2      Second Floor                    Company                    AT&T Global      3 years     (pound)288,993  As set out in the
       The Quadrant,                                              Markets                                      form of draft Lease
       Thomas More                                                (EMEA)                                       annexed to the
       Square, London                                             Limited                                      agreement for lease
                                                                                                               annexed hereto
- ------ ------------------------------ --------------------------  ---------------- ----------- --------------- ---------------------
</TABLE>



                                   SCHEDULE 2
<TABLE>
<CAPTION>

                                     Part C

- ------ ------------------------------ --------------------------  ---------------- ----------- --------------- ---------------------
       PROPERTY                       LANDLORD                    TENANT           TERM        RENT            OTHER TERMS
- ------ ------------------------------ --------------------------  ---------------- ----------- --------------- ---------------------
- ------ ------------------------------ --------------------------  ---------------- ----------- --------------- ---------------------
<S>    <C>                             <C>                        <C>              <C>         <C>             <C>
1      CDC Ravensbank                 AT&T ISTEL                  Company                                      As set out in the
       Drive, Redditch                                                             10 years    (pound)189,090  form of draft Lease
                                                                                                               annexed to the
                                                                                                               agreement for lease
                                                                                                               annexed hereto
- ------ ------------------------------ --------------------------  ---------------- ----------- --------------- ---------------------
</TABLE>



                                       47
<PAGE>






                                   SCHEDULE 3

                                  TAX COVENANT

1        TAX COVENANT

1.1      Subject to the  following  provisions  of this  Schedule,  the  Vendors
         hereby  covenant  with the  Purchaser to pay to the Purchaser so far as
         possible by way of repayment of the  consideration  payable  under this
         Agreement) an amount equal to:

         (a)      any Tax Liability of the Company:

                  (i)      arising as a consequence of or by reference to one or
                           more Events which occurred on or before Completion or
                           were deemed to occur on or before  Completion for the
                           purposes of any Tax; or

                  (ii)     arising in respect of or by  reference  to any income
                           profits  or  gains  which  were  earned   accrued  or
                           received on or before or in respect of a period ended
                           on or before Completion;

         (b)      any Tax  Liability of the Company which would have arisen (and
                  in respect of which the Vendors  would have been liable  under
                  paragraph  1.1(a))  but for the setting off of a New Relief or
                  Accounts Relief against that Tax Liability or (as the case may
                  be) against the income profits or gains which would have given
                  rise to that Tax Liability;

         (c)      any Tax Liability of the Company  arising as a consequence  of
                  or by  reference  to any of the  following  occurring or being
                  deemed to occur at any time after Completion:

                  (i)      the disposal by any Relevant  Company of any asset or
                           of any interest in or right over any asset; or

                  (ii)     the  making  by any  Relevant  Company  of  any  such
                           payment or deemed payment as constitutes a chargeable
                           payment for the purposes of section 214 of the Income
                           and Corporation Taxes Act 1988;

                  (iii)    or any Relevant Company ceasing to be resident in the
                           United Kingdom for the purposes of any Tax; or

                  (iv)     any Relevant  Company failing to pay the whole of the
                           Tax charged by any Tax assessment  made in respect of
                           that Relevant  Company  within six months of the date
                           of that Tax assessment;

                  and, for the purposes of this  paragraph,  the term  "RELEVANT
                  COMPANY"  shall mean the Vendors  and any company  that may be
                  treated  for the  purposes of any Tax as being a member of the
                  same group of companies as the Vendors or as being  associated
                  with the Vendors



                                       48
<PAGE>

         (d)      any  reasonable  costs  and  expenses   properly  incurred  in
                  connection  either  with any such  liability  or  amount as is
                  referred to in paragraphs  1.1(a),  1.1(b), or 1.1(c), or with
                  any  claim  therefor   (except   insofar  as  reclaimed  under
                  paragraph (8) or in taking or defending any successful  action
                  under this Schedule.

2        RESTRICTION OF TAX COVENANT

2.1      The provisions of Schedule 6 of this  Agreement  which are expressed to
         apply to this Schedule shall have effect as if set out here in full and
         the Vendors' liability under this Schedule shall be limited or excluded
         and/or repayments shall be made to the Vendors accordingly.

2.2      The Vendors  shall not be liable under this  Schedule in respect of any
         Tax Liability or other amount ("TAX AMOUNT") if and to the extent that:

         (a)      such  Tax  Amount  was  paid  or   discharged   on  or  before
                  Completion; or

         (b)      provision or reserve in respect of that Tax Amount was made in
                  the Completion Date Accounts; or

         (c)      such Tax Amount arises or is increased as a result of:

                  (i)      any change in Tax Legislation; or

                  (ii)     any increase in rates of Tax; or

                  (iii)    any  change  by a  Tax  Authority  of  any  published
                           practice or any withdrawal of change or withdrawal of
                           any extra-statutory concession or published change by
                           a  Tax  Authority  in  its   interpretation   of  Tax
                           Legislation,

                  (in      each  case)   announced   or  taking   effect   after
                           Completion; or

         (d)      such Tax Amount results from or is increased after  Completion
                  by any  change  in the  accounting  policies  employed  by the
                  Company in the  preparation  of its  accounts  (including  any
                  variation  of the  accounting  basis  upon  which the  Company
                  values its  assets)  other than any change  required  so as to
                  conform such  policies to UK GAAP as it exists at  Completion;
                  or

         (e)      such Tax Amount  would not have arisen but for a change  after
                  Completion  in the tax policies or practices of the Company or
                  its method of  application  (including the method of valuation
                  or  treatment of any assets or  liabilities)  or the method of
                  computing  or  submitting  tax  computations  other  than  any
                  changes required by law as it exists at Completion;

         (f)      such Tax Amount  would not have arisen but for a change in the
                  accounting   reference   date  of  the   Company   made  after
                  Completion; or

         (g)      such Tax Amount,  interest or penalties  and the Vendors would
                  not have been liable to make a payment  under this Schedule in
                  respect of that Tax Amount but for breach by the  Purchaser or


                                       49
<PAGE>

                  the Company of its obligations  under paragraph 7 or 8 of this
                  Schedule; or

         (h)      such Tax Amount would not have arisen but for a voluntary act,
                  transaction or omission of the Company or the Purchaser  after
                  Completion  outside the ordinary course of business other than
                  any such act,  transaction or omission carried out or effected
                  under  a  legally  binding  commitment  created  on or  before
                  Completion  or in  accordance  with  the  instructions  of the
                  Vendors under paragraphs 7 and 8.

         (i)      any  Vendors'  Relief is  available  to the  Purchaser  or the
                  Company to set against or otherwise  reduce the amount of that
                  Tax Amount.

3        TAX SAVINGS

3.1      In this  paragraph 3 "TAX SAVING" means the reduction or elimination of
         any Tax Liability to the extent such reduction or elimination would not
         have  occurred  but for the  payment or  discharge  by the Company of a
         previous  Tax  Liability  in  respect  of which the  Vendors  have made
         payment to the Purchaser under this Schedule.

3.2      If the  Purchaser  or the Company  becomes  aware that a Tax Saving has
         arisen the  Purchaser  covenants  that it will  notify  the  Vendors in
         writing of such Tax Saving as soon as reasonably  practicable and shall
         on demand by the Vendors repay to the Vendors the lesser of:

         (a)      the amount of such Tax Saving; and

         (b)      the aggregate  amounts  previously  paid by the Vendors to the
                  Purchaser under this Schedule

3.3      For the purposes of this  paragraph 3, the Company shall be regarded as
         obtaining  a Tax Saving on the date on which it obtains  relief from an
         actual payment of Tax by reason of the Tax Saving in question.

4        OVER PROVISIONS

4.1      If any provision  for Tax,  excluding  deferred  Tax,  contained in the
         Completion  Date  Accounts  shall  at the  date of any  payment  by the
         Vendors  pursuant  to this  Schedule  be or have been (at the  Vendors'
         request and expense)  certified by the Company's  auditors for the time
         being to be, an overprovision, the value of such overprovision shall:

         (a)      first be set off against any payment then due from the Vendors
                  under this Schedule; and

         (b)      to the extent that there is an excess  there shall be refunded
                  to the Vendors  (within 7 days after  receipt by the Purchaser
                  of a written  demand by the  Vendors)any  previous  payment or
                  payments made by the Vendors and not previously refunded under
                  this Schedule up to the amount of the excess; and



                                       50
<PAGE>

         (c)      to the extent that the excess referred to in paragraph (b) has
                  not been exhausted under that paragraph, the remainder of such
                  excess shall be carried forward and be set against any further
                  such  payment  or  payments  in   chronological   order  until
                  exhausted.

4.2      If the Purchaser or the Company becomes aware that an overprovision has
         arisen the  Purchaser  covenants  that it will  notify  the  Vendors in
         writing of such overprovision as soon as reasonably practicable.

5        DEDUCTIONS

5.1      Save  only  as may be  required  by law all  sums  payable  under  this
         Schedule shall be paid free and clear of all deductions or withholdings
         whatsoever.

5.2      If any deductions or  withholdings  are required by law to be made from
         any payment under this Schedule  (other than  interest) the payer shall
         pay such sum as will, after the deduction or withholding has been made,
         leave the recipient with the same amount as it would have been entitled
         to receive in the absence of any such  requirement  to make a deduction
         or withholding.

5.3      If any sum payable under this Schedule is subject to a Tax Liability in
         the hands of the recipient (other than interest under paragraph 6 (Date
         for  Payment)) the payer shall pay such sum as would have been required
         to be paid under  paragraph 5.2 had that Tax Liability been a deduction
         or withholding from the sum payable by the payer.

6        DATE FOR PAYMENT

6.1      Where the  Vendors  become  liable to make a  payment  pursuant  to the
         provisions  of this  Schedule,  the due  date  for the  making  of that
         payment  shall be the date  which is the later of seven  days after the
         Purchaser has given the Vendors notice requiring  payment of the amount
         claimed  (together with a copy of any relevant  assessment,  invoice or
         other document and a computation of the amount claimed) and;

         (a)      in the case of a Tax Liability referred to in paragraph 1.1(a)
                  or paragraphs  5.2 and 5.3, the last date on which the payment
                  of the Tax  Liability  in question may be paid to the relevant
                  Tax  Authority  in order to avoid  incurring  a  liability  to
                  interest  or a charge  fine or  penalty in respect of that Tax
                  Liability; or

         (b)      in the case of a Tax Liability referred to in paragraph 1.1(b)
                  the last date on which the payment of Additional Tax has to be
                  paid to the relevant Tax Authority in order to avoid incurring
                  a liability to interest or a charge fine or penalty in respect
                  of that  Additional  Tax (where  "ADDITIONAL  TAX" means a Tax
                  Liability  which  would  not  have  been  payable  but for the
                  utilisation of the New Relief or Accounts Relief in question).

6.2      The  Vendors  may at their  expense  require  the amount of any payment
         required to be made under this Schedule to be certified by the auditors


                                       51
<PAGE>

         for the  time  being  of the  Company  (acting  as  experts  and not as
         arbitrators)  and the  amount so  certified  shall  (save for  manifest
         error) be conclusive and binding on the Vendors and the Purchaser.

6.3      If any payment  required to be made by the Vendors  under this Schedule
         is not made by the due date for the making thereof, then, except to the
         extent that the Vendors'  liability  under  paragraph 1 (Tax  Covenant)
         compensates  the  Purchaser  for the  late  payment  by  virtue  of its
         extending to interest and penalties,  that payment shall carry interest
         from that due date until the date when the payment is actually  made at
         the rate of 2 per cent.  above base rate from time to time of  National
         Westminster Bank plc.

7        CONDUCT OF TAX AFFAIRS OF THE COMPANY

7.1

         (a)      the Vendors (or such professional  advisers as the Vendors may
                  select)  shall have the sole conduct of the  Vendors'  Conduct
                  Matters and of any Vendors' Appeal;

         (b)      the  Purchaser  shall  procure  that  the  Vendors  (or  their
                  advisers)  shall be  provided  promptly  with any  information
                  received  by the  Purchaser  or the  Company,  or of which the
                  Purchaser or the Company otherwise becomes aware, which may be
                  relevant  to the  Vendors'  Conduct  Matters  or any  Vendors'
                  Appeal,  and with such assistance  (including  assistance from
                  employees of the Purchaser and the Company) and access to such
                  documents and records of, or relating to, the Company,  as the
                  Vendors  (or  their   advisers)  may  reasonably   require  in
                  connection  with the Vendors'  Conduct  Matters,  any Vendors'
                  Appeal or the tax  affairs of the Vendors or any member of the
                  same group of companies as the Vendors;

         (c)      the Company  shall  promptly  sign such  returns and make such
                  claims and  elections  and give such  consents and comply with
                  all procedural requirements in respect of the making or giving
                  of such returns,  claims, elections or consents as the Vendors
                  may, in their absolute discretion, direct in writing;

         (d)      neither the Purchaser nor the Company shall amend,  disregard,
                  withdraw  or  disclaim  any  elections,  claims or benefits or
                  disclaim any initial or writing down  allowances  or any other
                  capital allowances in respect of any Relevant Period.

         (e)      the Purchaser shall not be obliged to procure that the Company
                  takes any such action as is mentioned in sub-paragraph  7.1 in
                  relation  to any Tax return  that is not true and  accurate in
                  all material respects.

         (f)      nothing done by the Company  pursuant to this paragraph  shall
                  in any respect restrict or reduce any rights the Purchaser may
                  have to make a claim  against the Vendors  under this Schedule
                  in  respect  of any  such Tax  Liability  as is  mentioned  in
                  Paragraph 1 (Tax Covenant).



                                       52
<PAGE>

7.2      Subject to paragraph 8 below, the Purchaser and its advisers shall have
         sole  conduct of all tax  affairs of the  Company  other than  Vendors'
         Conduct Matters and Vendors Appeals.

8        CLAIMS

8.1      If the  Purchaser or the Company  shall become aware of any Claim which
         is  likely  to give  rise to a  liability  of the  Vendors  under  this
         Schedule,  then the Purchaser  shall (or shall procure that the Company
         shall) as soon as  reasonably  practicable  give notice  thereof to the
         Vendors and in any event within 28 days of becoming  aware of the Claim
         (or 14 days in the case of a notice of  assessment,  demand  for Tax or
         notice of a General Commissioner's meeting).

8.2      If the Vendors  shall  indemnify  the Company and the  Purchaser to the
         reasonable satisfaction of the Purchaser against all costs and expenses
         (including interest on overdue Tax) which may be incurred thereby,  the
         Purchaser  shall  (and  shall  procure  that  the  Company  shall),  in
         accordance  with any  reasonable  instructions  of the Vendors given by
         notice to the Purchaser  (but subject to paragraphs  8.2(a) and 8.2(b))
         seek to avoid, dispute, resist, appeal, compromise or defend such Claim
         provided always that:

         (a)      the  Company  shall  not be  obliged  to  appeal  against  any
                  assessment  for Tax raised on it if,  having given the Vendors
                  notice of the  receipt of that  assessment,  it has not within
                  fifteen  days  thereafter   received   instructions  from  the
                  Vendors,  in accordance  with the provisions of this paragraph
                  8.2, to make that appeal; and

         (b)      the  Purchaser  and the Company shall not be obliged to comply
                  with any instruction of the Vendors which involves  contesting
                  any  assessment  for Tax before  any Court or other  appellate
                  body  (excluding  the Tax  Authority in  question)  unless the
                  Vendors  furnish the Purchaser with the written opinion of Tax
                  Counsel  of at least six  years'  call to the  effect  that an
                  appeal  against the assessment for Tax will, on the balance of
                  probabilities, be won;

         (c)      if  requested by the Vendors,  the  Purchaser  shall allow the
                  Vendors  to take over  conduct  of the Claim and any  dispute,
                  correspondence  or negotiation  arising from it in the name of
                  the Company.

9        PURCHASER'S COVENANT

9.1      The Purchaser  hereby  covenants with the Vendors to pay to the Vendors
         an amount equal to any of the following:

         (a)      any liability or increased  liability to Tax of the Vendors or
                  any of their  subsidiaries which arises as a consequence of or
                  by  reference  to  any  Relevant  Company  at any  time  after
                  Completion  failing to pay the whole of the Tax charged by any
                  assessment  to Tax made in  respect of that  Relevant  Company
                  within six months of the date of that  assessment to Tax where
                  (and to the extent that ) the liability for that Tax arises in


                                       53
<PAGE>

                  circumstances  such  that the  Purchaser  would  not have been
                  entitled to make a claim  against the Vendors  under  clause 1
                  (Tax  Covenant) of the Schedule or under the Tax Warranties in
                  respect of that Tax had it been paid by Relevant  Company and,
                  for the purposes of this  sub-paragraph,  the terms  "Relevant
                  Company"  shall mean that Company and any other  company which
                  is, or has at any time been,  treated for the  purposes of any
                  Tax as being a member of the same  group of  companies  as the
                  Purchaser or as being associated with the Purchaser other than
                  the Vendors; and

         (b)      any  reasonable  costs and  expenses  reasonably  and properly
                  incurred  by  the  Vendors  or any of  their  subsidiaries  in
                  connection  with any such liability or increased  liability to
                  Tax (or Claim  therefore) for which the Purchaser is liable or
                  is successfully  taking or  successfully  defending any action
                  under this paragraph.

9.2      The  provisions of paragraph 5  (Deductions),  6 (Date for Payment),  8
         (Claims) shall apply mutatis mutandis to this paragraph 9 as if set out
         herein.

10       REMOVAL FROM VAT GROUP

10.1     The Purchaser shall procure that the Company will:

         (a)      on or  before  20 April  2000  provide  to the  Representative
                  Member the Final Return showing the correct VAT output tax and
                  correct VAT input tax and the Final Balance;

         (b)      (if VAT output tax exceeds VAT input tax in the Final Return),
                  on or  before  20 April  2000  the  Company  shall  pay to the
                  Representative  Member an amount  equal to the Final  Balance;
                  and

         (c)      provide  to  the  Representative  Member  all  such  documents
                  information  and  assistance  as the  Vendors  may  reasonably
                  require to enable the Representative Member to comply with its
                  obligations in relation to VAT.

10.2     Any  payment(s)  made  pursuant to clauses  10.1 and/or 10.2 shall take
         into  account  any  payment(s)  on account of VAT which shall have been
         made previously by or to the Company in respect of the Final Period.

10.3     If the Representative Member shall obtain (whether by way of repayment,
         credit or  otherwise)  the benefit of VAT bad debt relief  (pursuant to
         Section 36 VATA 1994 and  Regulations  made  thereunder)  in respect of
         supplies  actually  made by the  Company  (but  treated  as made by the
         Representative Member under section 43(1) VATA 1994), the Vendors shall
         procure that the Representative Member shall:

         (a)      notify the Purchaser forthwith; and

         (b)      as Representative  Member of the VAT Group,  within seven days
                  after the Representative Member obtains such benefit;



                                       54
<PAGE>

         pay an amount equal to the benefit to the Company. If consideration for
         the  supply is  recovered,  the  Purchaser  shall  notify  the  Vendors
         forthwith and shall indemnify the Representative Member on an after-tax
         basis for any value added tax for which the  Representative  Member has
         to account to the  Commissioners of Customs & Excise as a result of the
         recovery.

10.4     The Vendors  shall  procure that any amount owing at  Completion by any
         member of the VAT  Group to the  Company  in  respect  of  transactions
         entered  into,  or services  provided,  by the Company in the  ordinary
         course of business prior to Completion  shall be paid by such member of
         the VAT Group in the normal course.

10.5     The Vendors  shall  procure that any amount owing at  Completion by the
         Company  to any  member of the VAT  Group in  respect  of  transactions
         entered into, or services provided, by a member of the VAT Group in the
         ordinary  course of business shall be paid by the Company in the normal
         course.

10.6     The Vendors  agree to reimburse the Purchaser on an after tax basis for
         any  amount  claimed  from the  Company  and/or  the  Purchaser  by the
         Commissioners  of  Customs  and  Excise  in  respect  of VAT  liability
         attributable to any supplies made by any other member of the VAT Group.

10.7     In this clause 10:

         (a)      "CUSTOMS" means H M Customs & Excise;

         (b)      "EXIT DATE" means the date of Completion or (as the case
                  maybe)  such other  effective  date from which  Customs  shall
                  agree that the Company ceases to be a member of the VAT Group;

         (c)      "THE FINAL BALANCE" means, in respect of the Final Period, the
                  difference  (whether  positive or negative) between VAT output
                  tax and VAT input tax of the Company  which  amounts  shall be
                  computed  on  the   assumption   that  the  Company  had  been
                  separately   registered   for  VAT  during  such  period  (but
                  disregarding  any  supplies  between the Company and any other
                  member of the VAT  Group)  and in  respect of any period up to
                  the  Completion  Date shall be the amount  provided for in the
                  Completion Date Accounts;

         (d)      "FINAL  PERIOD"  means the period  from 1 January  2000 to the
                  Exit Date;

         (e)      "FINAL RETURN" means an intra-group VAT return in the standard
                  format  used by the VAT Group to be produced by the Company in
                  respect of the Final Period;

         (f)      "REPRESENTATIVE  MEMBER"  means  AT&T  (UK)  LTD  which is the
                  representative member of the VAT Group;



                                       55
<PAGE>

         (g)      "VAT  GROUP"  means  the  companies,  including  the  Company,
                  registered as a group registration pursuant to Section 43 VATA
                  1994 under number 455744426.













                                       56
<PAGE>



                                   SCHEDULE 4

                             DIRECTORS AND EMPLOYEES

                          Part A - Additional Directors


                               Michael J. Mahoney

                                  Allan L. Shaw

                               Sheldon M. Goldman

                                  Stephen Grist



                             Part B - New Secretary




                               Sheldon M. Goldman




                           Part C - Retiring Directors




                                     D. Hall

                                 R.J.M. Jephcott

                                  A Macfarlane


                           Part D - Retiring Secretary




                                   G. Saunders










                                       57
<PAGE>





                                   SCHEDULE 5

                        MATTERS REPRESENTED AND WARRANTED

                           Part A - General Warranties

1        INFORMATION

1.1      The facts stated in Schedules 1 and 2 are correct.

1.2      All forecasts and projections  relating to the Company contained in the
         Information Memorandum dated 1 June 1999 were prepared in good faith.

1.3      The unaudited  December  1999 key  performance  indicators  attached as
         Section III,  file 3.11 in the  Supplementary  Data Room Index has been
         prepared in good faith and is derived from the appropriate  records and
         databases of the Company.

1.4      The budget  information  attached as Section I, file 1.8 and 1.9 in the
         Supplementary Data Room Index relating to the 12 month period ending on
         December  31st,  2000 has been  prepared  in good faith with a level of
         care  appropriate to a forward looking budget exercise  carried out for
         management accounting purposes.

1.5      The Company is a corporation  duly organised and validly existing under
         the laws of England and Wales with the requisite power and authority to
         own its  properties  and  carry  on its  business  as the same is being
         conducted as of the date hereof.

2        THE SHARES

2.1      The Shares  represent all the issued and  outstanding  share capital of
         the Company.  All the Shares are fully paid or are properly credited as
         fully paid and the Vendors are the sole legal and  beneficial  owner of
         the Shares.

2.2      There is no option,  right to acquire or Security  Interest on, over or
         affecting  the  Shares  or any of them  and  there is no  agreement  or
         commitment  to give or  create  any and no claim  has been  made by any
         person to be entitled to any.

3        ACCOUNTS

3.1      The Management Accounts have been prepared on a prudent basis and using
         accounting  policies and principles  consistent  with those used in the
         preparation of the Accounts.

3.2      The  Management  Accounts  fairly  present  the state of affairs of the
         Company as at the Management Accounts Date and of the profits or losses
         of the  Company  for the twelve  month  period to which the  Management
         Accounts relate.

3.3      The Management  Accounts are not misleading in any material respect and
         neither  materially  over-state  the value of the assets nor materially
         under-state  the  liabilities  of the  Company as at the dates to which


                                       58
<PAGE>

         they were drawn up and do not materially  under-state the losses of the
         Company in respect of the periods to which they relate.

3.4      So far as the Vendors are aware  there are no material  liabilities  or
         obligations  of any kind relating to the business of the Company during
         the periods to which the Accounts and the  Management  Accounts  relate
         which are not  reflected  in the  Accounts or the  Management  Accounts
         respectively or the respective notes thereto.

3.5      The Company's  accounting records are up-to-date,  in its possession or
         under  its  control,  and so far as the  Vendors  are  aware  have been
         maintained in accordance with the law.

3.6      The Accounts fairly and accurately  present the state of affairs of the
         Company as at the  Accounts  Date and of the  profits and losses of the
         Company for the nine month  period to which they  relate,  on the basis
         that the Carve Out  Agreements had been completed and all other changes
         to  the  business  carried  on  by  the  Company  in  contemplation  of
         Completion of this  Agreement had been fully  implemented  prior to the
         relevant financial period to which the Accounts relate.

3.7      The Accounts have been prepared in accordance  with generally  accepted
         accounting  conventions,  policies,  principles  and  practices  of the
         United States.

4        POSITION SINCE THE MANAGEMENT ACCOUNTS DATE

4.1      Since the Management Accounts Date, the Company has not:

         (a)      acquired or agreed to acquire any business; or

         (b)      disposed  of or agreed to dispose of any of its assets  except
                  in the  ordinary  and normal  course of  business  at the full
                  market values of the assets concerned; or

         (c)      incurred any capital commitments (other than as anticipated in
                  the Company's current capital expenditure budget) in excess of
                  (pound)1,000,000 individually; or

         (d)      made any offer or tender  which is capable of being  converted
                  into an  obligation  of the Company by acceptance or other act
                  of some  other  person  other than in the  ordinary  course of
                  business;

         (e)      changed  the  terms  of  employment,  including  pension  fund
                  commitments  of the Company (other than those required by law)
                  which could  increase  the total staff costs of the Company by
                  more  than  5% per  annum,  or  the  remuneration  of any  one
                  director or employee by more than (pound)10,000 per annum;

         (f)      agreed to do any of the foregoing.



                                       59
<PAGE>

4.2      So far as the  Vendors  are aware  there has been no  material  adverse
         change in the  financial  results or position of the Company  since the
         Management Accounts Date.

4.3      Since the Management Accounts Date the business of the Company has been
         carried  on  only  in  the  ordinary  course  and in  the  same  manner
         (including  nature and scope) consistent with the way it was carried on
         prior to the Management Accounts Date.

4.4      Since the Management Accounts Date no liabilities (including contingent
         liabilities)  have been  assumed or incurred  by the Company  otherwise
         than in the ordinary course of its business.

4.5      Since the  Management  Accounts  Date no  resolution  of the Company in
         general  meeting has been passed and no dividend or other  distribution
         has been declared, made or paid by the Company.

4.6      Since  the  Management  Accounts  Date  no  change  in  the  accounting
         reference period of the Company has been made.

4.7      All payments, receipts and invoices of the Company since the Management
         Accounts Date have been fully and  accurately  recorded in the books of
         the Company.

5        SUBSIDIARIES

5.1      The Company:

         (a)      has never had any subsidiary; and

         (b)      holds no  shares  or  interests  in the  capital  of any other
                  company.

6        PROPERTY

6.1      The Leasehold  Properties are the only  Properties  owned,  controlled,
         used or occupied by the Company and all deeds and  documents  necessary
         to prove title to each of them are in the  possession of the Company or
         are the subject of  acknowledgements.  Each of the Leasehold Properties
         is used and occupied for the purpose of the business of the Company.

6.2      In relation to each of the Leasehold Properties:

         (a)      the  Company is solely  legally and  beneficially  entitled to
                  such Leasehold  Property and has good and marketable  title to
                  the same (but for the avoidance of doubt this shall not confer
                  any  warranty  as to  the  capital  or  rental  value  of  the
                  Properties);

         (b)      the Company has paid the rent and observed and  performed  the
                  covenants  on  the  part  of the  lessee  and  the  conditions
                  contained   in   any   leases   (which   expression   includes
                  underleases) under which the Leasehold Properties are held;



                                       60
<PAGE>

         (c)      all the  licences,  consents and  approvals  required from the
                  landlords and any superior  landlords  under the leases of the
                  Leasehold Properties and from their respective  mortgagees (if
                  any) have been  obtained and the  covenants on the part of the
                  lessee contained in such licences, consents and approvals have
                  been duly performed and observed;

         (d)      save as disclosed in the Disclosure Letter the Vendors are not
                  aware of any notices,  negotiations or proceedings  pending in
                  relation to rent reviews nor is any rent liable at the date of
                  this Agreement to be reviewed;

         (e)      so far as the Vendors are aware there is not  outstanding  any
                  obligation  necessary  to  comply  with  any  notice  or other
                  requirement  given by the  landlord  under  any  leases of the
                  Leasehold Properties;

         (f)      so far as the  Vendors  are aware  there are no  circumstances
                  which  would  entitle any  landlord to exercise  any powers of
                  entry  or  take  possession  whether  by  means  of  peaceable
                  re-entry or proceedings or which would otherwise  restrict the
                  continued   possession   and   enjoyment   of  the   Leasehold
                  Properties;

         (g)      save as  disclosed  in the  Disclosure  Letter  all  covenants
                  (whether  affecting  the freehold or  leasehold  titles to the
                  Leasehold   Properties)  have  been  properly   performed  and
                  observed  and neither the Vendors nor the Company has received
                  notice of any outstanding breach of covenant as regards any of
                  the Leasehold Properties;

         (h)      save as  disclosed  in the  Disclosure  Letter  the  Leasehold
                  Properties  are free  from any  mortgage  debenture  or charge
                  (whether specific or floating legal or equitable)  rent-charge
                  lien or other encumbrance  securing the repayment of monies or
                  other  obligation  or  liability  of the  Company or any other
                  party;

         (i)      the Leasehold  Properties are not subject to any liability for
                  the payment of any outgoings other than national  non-domestic
                  rates,  water and  sewerage  services  charges  and  insurance
                  premiums of a recurring nature;

         (j)      the  Leasehold  Properties  are not subject to any  covenants,
                  restrictions,  stipulations,  easements,  profits  a  prendre,
                  wayleaves,   licences,   grants,  exceptions  or  reservations
                  overriding interests or other such rights the benefit of which
                  is vested in the third parties nor any agreement to create the
                  same;

         (k)      where any such matters as are referred to in  paragraphs  (h),
                  (i) and (j) have been disclosed in the  Disclosure  Letter the
                  obligations  and  liabilities  imposed and arising  under them
                  have been fully  observed  and  performed  and all payments in
                  respect of them due and payable have been duly paid;

         (l)      the Leasehold  Properties  are not subject to any agreement or
                  right to acquire the same nor any option, right of pre-emption
                  or right of first refusal and there are no outstanding actions
                  claims or demands  between the Company or any  Subsidiary  and


                                       61
<PAGE>

                  any third  party  affecting  or in  respect  of the  Leasehold
                  Properties;

         (m)      there is no person who is in  occupation  or who has or claims
                  any  rights  or  easements  of  any  kind  in  respect  of the
                  Leasehold Properties adversely to the estate,  interest, right
                  or title of the Company;

         (n)      neither  the  Vendors  nor  the  Company  have   received  any
                  compulsory purchase notices,  orders or resolutions  affecting
                  the  Leasehold  Properties  nor are the  Vendors  aware of any
                  circumstances likely to lead to any being made;

         (o)      so far as the  Vendors  are  aware  the  present  use of  each
                  Leasehold Property is authorised under the Planning Acts;

         (p)      so far as the Vendors are aware no development, alterations or
                  other  works which would  require  any  permission  or consent
                  under  the   Planning   Acts  or  any   bye-laws  or  building
                  regulations  or other relevant  legislation  have been carried
                  out without all those  permissions  and  consents  having been
                  obtained and all conditions  attached to those permissions and
                  consents have been observed and performed;

         (q)      neither the Vendors nor the Company  have  received any notice
                  of breach of the Planning  Acts or of any  relevant  bye-laws,
                  building  regulations and other legislation in relation to any
                  Leasehold Property;

         (r)      so far as the  Vendors  are aware each  Leasehold  Property is
                  served by drainage, water, electricity and gas services all of
                  which are connected to the mains by media located entirely on,
                  in or under that Leasehold  Property or by media  elsewhere in
                  respect  of the use of which the  Company  and those  deriving
                  title  under it to that  Leasehold  Property  have a permanent
                  legal easement free from onerous or unusual conditions and the
                  passage and provision of those services in  uninterrupted  and
                  neither  any of the  Vendors  nor  the  Company  knows  of any
                  imminent or likely interruption of such passage or provision;

         (s)      so  far  as the  Vendors  are  aware  none  of the  facilities
                  necessary  for the  enjoyment and current use of any Leasehold
                  Property  are  enjoyed  on  terms   entitling  any  person  to
                  terminate or curtail them;

         (t)      so far as the  Vendors  are  aware  the  means of access to or
                  egress from each  Leasehold  Property  are over  either  roads
                  which  have  been  adopted  by the  local  authority  and  are
                  maintainable  at public expense or roads in respect of the use
                  of  which  the  Company  to  that  Leasehold  Property  have a
                  permanent  and legal  easement  free from  onerous  or unusual
                  conditions;

         (u)      so  far  as the  Vendors  are  aware  there  are  no  disputes
                  regarding  boundaries,  easements,  covenants or other matters
                  relating to any Leasehold Property or its use;



                                       62
<PAGE>

         (v)      all fixtures and fittings at the Leasehold  Properties are the
                  absolute property of the Company;

         (w)      where the title of the Leasehold Properties is unregistered it
                  is  properly  constituted  by,  and can be  deduced  from duly
                  stamped  documents  of title  which are in the  possession  or
                  under the control of the Company or the Vendors.

         (x)      where  the  title  to  any  of  the  Leasehold  Properties  is
                  registered the Company is shown on the register  thereof at HM
                  Land Registry as the  proprietor  with absolute  title and the
                  Land   Certificate  in  respect  of  each  of  such  Leasehold
                  Properties  is in the  possession  or under the control of the
                  Company or the Vendors;

         (y)      so far as the Vendors are aware  compliance  is being made and
                  has at all times been made with all  applicable  statutory and
                  bye-law  requirements with respect to the Leasehold Properties
                  and in particular (but without  limitation) with  requirements
                  as to fire precautions and means of escape in case of fire and
                  with  requirements  under the Public Health Acts,  the Housing
                  Acts,  the  Highways  Acts,  the  Offices,  Shops and  Railway
                  Premises Act 1963, the Health and Safety at Work Act 1974, the
                  Factory Acts and the London Building Acts;

         (z)      so  far  as  the  Vendors  are  aware  there  is no  covenant,
                  restriction,  burden,  stipulation  or outgoing  affecting any
                  Leasehold Property which is of an onerous or unusual nature or
                  which conflicts with its present use.

6.3      The  information  contained in Schedule 2 as to the principal  terms of
         the leases under which the Leasehold Properties are occupied or used by
         the Company is true and accurate in all respects.

6.4      The  Company has not been a guarantor  of a tenant's  covenants  in any
         lease.

6.5      The Company has not surrendered the lease of any leasehold  property to
         the reversioner without first investigating the reversioner's title and
         without  receiving from the  reversioner  an absolute  release from the
         tenant's covenants in the relevant lease and from all liability arising
         from that lease.

6.6      The Company has not assigned any leasehold property of which it was the
         original tenant in respect of which it entered into a covenant with the
         landlord to observe and perform the tenant's covenants under that lease
         without  receiving  a full and  effective  indemnity  in respect of its
         liability under that lease.

6.7      In relation to each of the  Properties  to be assigned to the Purchaser
         pursuant to the Property Sale Agreement:

         (a)      all the  warranties  referred to in paragraph  6.2 above shall
                  apply mutatis mutandis; and



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<PAGE>

         (b)      the  information  contained in Schedule 1 of the Property Sale
                  Agreement is true and accurate in all respects.

7        ASSETS

7.1      The Company has not  experienced  any  material  adverse  effect to its
         Assets or to any other  software or  hardware  used by the Company as a
         result  of such  Assets,  software  or  hardware  not  being  Year 2000
         Compliant.

7.2      The Company legally and beneficially owns, free from third party rights
         or has a right to use,  all the  assets  and  undertaking  (other  than
         Intellectual  Property)  used in  connection  with and required for the
         business of the Company.

7.3      All such assets and undertaking (other than Intellectual Property ) are
         owned by the Company  free from any  Security  Interest and there is no
         agreement or commitment  to give or create any such Security  Interest.
         So far as the Vendors  are aware,  no claim has been made by any person
         to be entitled to any Security Interest over the assets and undertaking
         and there are no agreements or arrangements  restricting the freedom of
         the  Company to use or dispose  of its  assets  and  undertaking  as it
         thinks fit.

7.4      All assets of the Company used in  connection  with the business of the
         Company  which  retain a written  down  value in excess of 50% of their
         acquisition cost are:

         (a)      in the possession and under the control of the Company; and

         (b)      in reasonable  repair and condition having regard to their age
                  and historic usage.

7.5      Save for leases in respect  of  backbone  fibre,  access  circuits  and
         network infrastructure entered into in the ordinary course of business,
         the  Company  is not a party to, or is liable  under,  a lease or hire,
         hire  purchase,  credit sale or  conditional  sale  agreement  which is
         material.  For these purposes  "material" shall mean requiring payments
         of in aggregate more than (pound)50,000 in any 12 month period.

7.6      The assets of the  Company  together  with those  assets in relation to
         which the Company has a direct or indirect right of use pursuant to the
         Transitional Service Agreements or the Supply Agreement comprise all of
         the assets and  equipment  used by the Company in  connection  with the
         business of the Company.

8        INSURANCES

8.1      Particulars of all  insurances  maintained by the Company are disclosed
         by the  Disclosure  Letter and all such  insurances are and have at all
         material times been in force.

8.2      There  have been no  insurance  claims  made by the  Company  in the 12
         months prior to the date of this Agreement.



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<PAGE>

9        BANK ACCOUNTS

9.1      The Disclosure  Letter contains full and accurate details of all of the
         Company's  investment,  deposit and bank  accounts and of the banks and
         other financial  institutions at which they are kept. Since the date of
         each  statement  no payment out of any of the  accounts  has been made,
         except for routine payments in the ordinary course of trading,  and the
         present  balances are not  substantially  different from those shown in
         the statement.  Amounts represented by cheques,  warrants,  mandates or
         other payment  instructions issued or given by the Company which at the
         date of this Agreement  remain  outstanding or unpaid or unperformed do
         not exceed in the aggregate  (pound)5,000,000  and will be duly paid by
         the Company

9.2      Full  details of all  overdraft,  loan and other  financial  facilities
         available  to the Company and the amounts  outstanding,  under them are
         disclosed  by the  Disclosure  Letter and no Person who provides any of
         those  facilities  has given any indication  that they are  considering
         withdrawing or altering any of such facilities.

9.3      So far as the Vendors are aware, the Company has not done or omitted to
         do anything  whereby the  continuance of the facilities  referred to in
         paragraph 9.1 above may be prejudiced or affected.

9.4      The  Disclosure   Letter  contains  full  details  of  all  outstanding
         borrowings  and other  indebtedness  of the Company  other than amounts
         owed to trade  creditors.  Except for such borrowings and  indebtedness
         and  amounts  due  to  trade  creditors,  the  Company  does  not  have
         outstanding  any loan  capital and has not  incurred or agreed to incur
         any borrowing which it has not repaid or satisfied,  nor has it lent or
         agreed  to lend any money  which has not been  repaid to it nor does it
         own the benefit of any debt present or future  (other than debts due to
         it in  respect of the sale of  trading  stock in the  normal  course of
         trading) nor is it a party to or have any obligation under:

         (a)      any debenture,  acceptance credit facility,  bill of exchange,
                  promissory note,  finance lease, debt or inventory  financing,
                  discounting or factoring  arrangements  or sale and lease back
                  arrangements; or

         (b)      any other  arrangements the purpose of which is to raise money
                  or provide finance or credit.

9.5      No event which is or, with the passing of any time or the giving of any
         notice,  certificate,  declaration or demand,  would become an event of
         default  under or any  breach of any of the terms of any loan  capital,
         borrowing,  debenture  or  financial  facility  of the Company or would
         entitle any third party to call for repayment  prior to normal maturity
         has occurred or been alleged.

9.6      The Company has not factored or discounted any of its debts.

10       CONDUCT OF BUSINESS

10.1     The Vendors are not aware of any material  breach by the Company of any
         Material  Contract to which the Company is a party or of any allegation
         of such a thing.  So far as the Vendors are aware no written notice has
         been  received  from any third party to any Material  Contract to which
         the Company is a party that any event has occurred prior to the date of


                                       65
<PAGE>

         this  Agreement  which would entitle that third party to terminate that
         contract prematurely.

10.2     No  Material  Customer or  Material  Supplier  has during the 12 months
         preceding the date of this  Agreement  ceased or indicated an intention
         to cease  trading  with or  supplying  to the  Company  or is likely to
         reduce substantially its trading with or supplies to the Company .

10.3     In the twelve months prior to the date of this  Agreement not more than
         ten per cent in value of  purchases by the Company were placed with any
         one  supplier  and not more  than ten per cent in value of sales by the
         Company were made to any one customer.

10.4     So far as the Vendors are aware the Company has obtained all  licences,
         permissions  and consents  required for the carrying on of its business
         (save for any such  licences,  permissions  or consents which relate to
         Intellectual Property matters,  which are dealt with under paragraph 23
         below) and, such licences,  permissions  and consents are listed in the
         Disclosure Letter, are in force and effect, are not limited in duration
         (except  as  referred  to on the faces of the  relevant  documents)  or
         subject  to onerous  conditions.  The  Company  has  complied  with all
         conditions  of  and   requirements   relating  to  all  such  licences,
         permissions and consents.

10.5     So far as the  Vendors are aware the  Company is in  compliance  in all
         material  respects  with  all  laws,  statutes,   rules,   regulations,
         ordinances,   decrees  and  orders  of  all   applicable   governmental
         authorities  applicable  to it and its business and neither the Vendors
         nor the Company has received any notice that any violation or potential
         violation  or any action,  suit,  proceeding,  hearing,  investigation,
         charge, complaint,  claim, demand or notice has been filed or commenced
         against the Company  alleging  or  investigating  any failure to comply
         (except such failures to company that could not, individually or in the
         aggregate, have a material adverse effect on the business and prospects
         of the  Company)  and the  Vendors  are not aware of any  circumstances
         which would give rise to any such action,  suit,  proceeding,  hearing,
         investigation, charge, complaint, claim, demand or notice.

11       DIRECTORS AND EMPLOYEES

11.1     The details of the Employees and the  particulars  of their  employment
         set out in the relevant  list  contained in the  Disclosure  Letter are
         accurate and complete in all material  respects.  So far as the Vendors
         are aware,  no person who was  formerly  employed  by the Company has a
         right to return to work (whether for reasons  connected  with maternity
         leave or absence by reason of illness or  incapacity or otherwise) or a
         right to be  reinstated  or  re-engaged  in the Company or to any other
         compensation.

11.2     The terms and  conditions of employment of all Employees of the Company
         are in all material  respects in accordance with the standard terms and
         conditions supplied to the Purchaser.



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<PAGE>

11.3     There are not in existence:

         (a)      any service agreements or other contracts with Employees which
                  cannot be terminated  by three months'  notice or less without
                  giving  rise to any claim for damages or  compensation  (other
                  than compensation under the Employment Rights Act 1996); or

         (b)      any  consultancy  agreements  or other  contracts  for service
                  whether  written or oral  between  the  Company  and any other
                  Person firm or company; or

         (c)      any arrangements by which any Person has the use of any credit
                  or  charge   card  or  account   for  which  the   Company  is
                  responsible.

11.4     There are no  arrangements  to which the Company or its holding company
         is a  party,  involving  share  options  profit  sharing  or  bonus  or
         incentive payments for Employees.

11.5     There is no actual  or, so far as the  Vendors  are  aware,  threatened
         dispute between the Company and a material number of its Employees nor,
         so far as the Vendors are aware, any circumstances  likely to give rise
         to any such dispute;  there have been no strikes or  industrial  action
         short of strike action (official or unofficial) by any of the Employees
         during the period of two years  immediately  preceding  the date hereof
         and there is no  agreement or  arrangement  written or oral between the
         Company and any trade  union or other body  representing  Employees  in
         relation  either  to  recognition  of trade  union or other  body or to
         collective terms and conditions or representation.

11.6     Within the period of 3 months  prior to the date of this  Agreement  no
         Employee has been given notice of termination of his employment (or has
         had his employment  terminated without notice) and no Employee has left
         the Company's employment of his own accord or tended his resignation.

11.7     Full  particulars  are  contained  in  the  Disclosure  Letter  of  any
         outstanding  offer of employment  made to any person by the Company and
         there is no person who has accepted  such an offer in writing but whose
         employment has not yet started.

11.8     In respect of each of the Employees the Company has:

         (a)      so far as the Vendors are aware, performed all obligations and
                  duties  required  to be  performed  by it (and has settled all
                  outstanding claims and debts), whether arising under contract,
                  statute, at common law or in equity; and

         (b)      paid to the Inland Revenue and any other appropriate authority
                  all taxes,  National Insurance  contributions and other levies
                  due in respect of the Employees in respect of their employment
                  by the Company up to Completion.

11.9     The  Company  has not  offered,  promised  or agreed for the future any
         variation in any contract of employment or any contract for services in
         respect of the Employees.



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<PAGE>

11.10    The Company has  maintained  current  adequate  records  regarding  the
         service and terms and conditions of employment of each of its Employees
         including  without  limitation  those required  pursuant to the Working
         Time Regulations 1998 and the National Minimum Wage Regulations 1999.

11.11    So far as the Vendors are aware no liability  has been  incurred by the
         Company (including without limit any amounts outstanding or promised to
         any Employees) which remains undischarged for breach of any contract of
         service  or  for  services  or  for  redundancy   payments   (including
         protective awards) or for compensation under any employment legislation
         or regulations or for wrongful dismissal,  unfair dismissal, equal pay,
         sex,  race or disability  discrimination  or otherwise and no order has
         been made in the 12 month  period  prior to the date of this  Agreement
         for the  reinstatement  or re-engagement of any of the Employees or any
         person formerly employed or engaged by the Company.

11.12    The  Company  does  not  have an  obligation  to make  any  payment  on
         redundancy  in  excess  of the  statutory  redundancy  payment  and the
         Company has not operated any discretionary  practice of making any such
         excess  payments  save to the extent,  in both cases,  disclosed in the
         documents in section IV, file 4 of the Data Room.

11.13    The  Company  is not  engaged  or  involved  in  any,  claim  or  legal
         proceedings (whether arising under contract,  common law, statute or in
         equity including  without  limitation under the Equal Pay Act 1970, the
         Sex  Discrimination  Act 1975,  the Race  Relations  Act 1976,  the Sex
         Discrimination  Act 1986,  the Employment Act 1989, the Trade Union and
         Labour Relations Consolidation Act 1992, the Disability  Discrimination
         Act  1995,  Article  141  of the  Treaty  of  Rome,  the  Working  Time
         Regulations  1998 or the National  Minimum Wage Act 1998) by any of the
         Employees or the Company's former employees, former directors or former
         consultants  or  employee  representatives  or Trade  Unions  acting on
         behalf  of any such  Employees  or  former  Company  employees,  former
         directors or consultants.

11.14    The  Company  has not made any loan or  advance  (other  than a loan to
         purchase  a rail  season  ticket)  to any of  the  Employees  which  is
         outstanding.

11.15    No Employee is currently on a career break.

11.16    There are no arrangements,  whether contractual or otherwise, entitling
         any of the  Employees to any payments by the Company or other  benefits
         from the Company arising from the sale or disposal of the Sale Shares.

11.17    The Company has in all material  respects complied with its obligations
         under statute and regulations  concerning the health and safety at work
         of its employees.

12       PENSIONS

12.1     Other  than  in  respect  of  the  Pension  Plans  the  Company  has no
         obligation  to pay or provide any  pensions,  allowances,  lump sums or
         other like  benefits  on  retirement  or on death or during  periods of
         sickness or  disablement  called for the purpose of this  paragraph  12
         "BENEFITS" to or for the benefit of any of the  Company's  employees or


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<PAGE>

         directors or former employees or former directors (together called, for
         the purposes of this paragraph 12,  "EMPLOYEES")  or for the benefit of
         dependants  of any such  Employees  and is not a party to or obliged to
         contribute  to any or under any  agreements,  arrangements,  customs or
         practices for the payment of or contribution towards Benefits to or for
         the benefit of  Employees  or such  dependants  nor has any proposal to
         establish any such agreement or arrangement been announced.

12.2     Full  details  of the  Pension  Plans are  included  or  annexed to the
         Disclosure Letter in the form of:

         (a)      copies of all trust deeds and rules  governing  or relating to
                  the Pension Plans;

         (b)      copies  of  all  current  booklets,  announcements  and  other
                  explanatory literature issued to the Employees who are members
                  of the Pension Plans and copies of letters or other  documents
                  relating to arrangements  for individual  members or groups of
                  members.

         (c)      particulars of any discretionary  increases (whether customary
                  or  otherwise)  in Benefit  under the Pension Plans granted in
                  the period of 3 years prior to the Completion Date;

         (d)      a copy of the contracting-out certificate and letter of Inland
                  Revenue approval in respect of the Pension Plans;

         (e)      in relation to the UK Plans, trustee resolutions and a copy of
                  the latest audited accounts of the UK Plan

12.3     No discretion or power has been or will before  Completion be exercised
         under the Pension Plans to:

         (a)      augment   benefits   thereunder  in  respect  of  any  of  the
                  Employees;

         (b)      admit to membership  an Employee who would not otherwise  have
                  been eligible for admission to membership thereof;

         (c)      provide in  respect  of a member who is an  Employee a benefit
                  which  would not  otherwise  be  provided  in  respect of such
                  member; or

         (d)      pay a  contribution  thereto in respect of an  Employee  which
                  would not otherwise have been paid.

12.4     All benefits  (other than refunds of  contributions)  payable under the
         Pension  Plans on the death of a member  who is an  Employee  are fully
         insured under a policy held in the name of the trustees of the relevant
         Pension Plan effected with an insurance  company of good repute and all
         premiums due under such policy have been paid.

12.5     No payment or repayment  of any of the assets of the Pension  Plans has
         been made to any employer participating in the Pension Plans.



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<PAGE>

12.6     There has been no breach of the trusts of the  Pension  Plans and there
         are no  actions,  suits  or  claims  (other  than  routine  claims  for
         benefits)  outstanding,  pending or threatened  against the trustees or
         administrator  of the  Pension  Plans or  against  the  Vendors  or the
         Company or any other employer which  participates  in the Pension Plans
         in respect of any act,  event,  omission or other matter arising out of
         or in connection with the Pension Plans. There have been no submissions
         or referrals made to the Occupational Pensions Regulatory Authority, to
         the Pensions  Ombudsman or to OPAS in relation to the Pension Plans and
         so far as the  Vendors  are aware no such  submission  or  referral  is
         proposed or threatened.

12.7     In relation to the Pension Plans:

         (a)      the  current  rates  of all  contributions  are set out in the
                  Disclosure  Letter  and there are not at the date  hereof  any
                  contributions thereto from or in respect of Employees or other
                  payments which have fallen due but are unpaid;

         (b)      since the report of the last actuarial  valuation for the Main
                  Plan  and  Supplementary  Plan  contributions  in  respect  of
                  Employees  have been made at the rate or rates  recommended in
                  such report or any other subsequent actuarial advice;

         (c)      the  benefits  payable  under the UK Plan  whether  immediate,
                  prospective or  contingent,  are solely the benefits which can
                  be provided by the funds  available  for each member which are
                  held by the trustee of the UK Plan.

12.8     The Pension Plans are approved by the  Commissioners  of Inland Revenue
         as exempt approved  schemes for the purposes of Part XIV Chapter I ICTA
         1988 and the  Vendors  are not aware of any  circumstances  which might
         give the Inland Revenue reason to withdraw such approval.

12.9     The Main Plan and UK Plan are  contracted-out  schemes for the purposes
         of  the  Pension  Schemes  Act  1993  and  have  been  administered  in
         accordance  with the  contracting-out  requirements of Part III of that
         Act.  The  Company  holds or is named  upon a  current  contracting-out
         certificate  issued  since 5th April 1997 in  relation to the Main Plan
         and UK Plan.

12.10    The Pension Plans do not  distinguish  between male and female  members
         (except in relation to maternity) in the provision of benefits relating
         to periods of  pensionable  service  after 17th May 1990 and no adverse
         alteration  has been made to  benefits  already  accrued at the date of
         announcing changes designed to equalise benefits.

12.11    The  Pension  Plans  have  not  at any  time  excluded  employees  from
         eligibility for membership on the grounds of specified hours of work.

12.12    The Pension Plans have been administered in accordance with:

         (a)      the preservation requirements within the meaning of section 69
                  Pension Schemes Act 1993;



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<PAGE>

         (b)      the equal access requirements of section 62 Pensions Act 1995;
                  and

         subject  thereto in accordance with the trusts powers and provisions of
                  the  Pension  Plans  and  overriding   legislation  including,
                  without limitation,  the requirements of Article 141 of the EC
                  Treaty of Rome.

12.13    The Company has been properly  admitted to participation in the Pension
         Plans.

12.14    No  company  or  other  entity  participates  in or  has  at  any  time
         participated  in the UK Plan  other  than to the  extent  shown  in the
         Disclosure Letter.

12.15    None of the assets of the UK Plan are invested (directly or indirectly)
         in or loaned  (directly or  indirectly)  to the Company and there is no
         "EMPLOYER-RELATED  INVESTMENT"  (as such term is  utilised  in  section
         40(2) of the Pensions Act 1995), whether direct or indirect.

12.16    The assets,  investments  and policies  comprising  the funds of the UK
         Plan are and will be at the Completion  Date  beneficially  held in the
         names  of the  trustees  of the UK Plan  and  legally  and  effectually
         comprised within the assets of the UK Plan.

12.17    No benefit will become payable or be subject to any  augmentation  as a
         result of Completion which, had Completion not occurred, would not have
         resulted  in  such  benefit   becoming  payable  or  being  subject  to
         augmentation.

12.18    As far as the Vendors are aware no  undertaking  or assurance  (whether
         legally  binding  or not) has  been  given to any  Employee  about  the
         continuation  of the  Pension  Plans or any  alteration  to or from its
         terms or the increase or improvement of benefits.

12.19    As far as the  Vendors  are  aware  the  Pension  Plans  comply  in all
         respects with the requirements of the Pensions Act 1995.

13       COMMERCIAL CONTRACTS AND JOINT VENTURES

13.1     There are not now  outstanding  so far as the  Vendors  are aware,  any
         contract or  arrangement to which the Company is party which is outside
         the  ordinary  course of  business  of the  Company  and of a long-term
         nature (which for this purpose includes a contract or arrangement which
         is not  capable of being  terminated  by three  months'  notice or less
         without payment of compensation or damages).

13.2     The  Company  has never  been,  and is not party to any joint  venture,
         consortium or  partnership  arrangement or agreement or a member of any
         unincorporated association.

13.3     Copies of all Material Contracts are set out in section IX, file 9.11.6
         and section XXVII, file 27.1.27 of the Data Room.

13.4     The Company is not a party to nor does it have any  liability  (present
         or future) under any guarantee or indemnity or letter of credit.



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<PAGE>

13.5     Except for any guarantee or warranty implied by law or contained in its
         standard  terms  of  business  (a  copy of  which  is  attached  to the
         Disclosure Letter) or otherwise in the ordinary course of business, the
         Company has not given any  guarantee,  indemnity,  warranty or made any
         representation,  in respect of goods or services supplied or contracted
         to be supplied by it or accepted any liability or obligation that would
         apply after any such goods or services had been supplied by it.

13.6     To the extent that the Vendors  have  disclosed,  in or pursuant to the
         Disclosure Letter, copies of contracts to which the Company is a party,
         such copies are true in all material  respects  and complete  copies of
         the documents of which they purport to be copies.

13.7     So far as the Vendors are aware all  Material  Contracts  are valid and
         binding,  and so far as the  Vendors  are  aware no such  agreement  is
         voidable.  Neither  the Company nor so far as the Vendors are aware any
         other  party is in  default  (nor,  with the lapse of time,  will be in
         default)  under any Material  Contract  being a default  which would be
         material  in the  context  of the  financial  or  trading  position  or
         prospects  of the Company,  and the Vendors  have not received  written
         notice of any claim alleging any such default.

13.8     Since 1st July 1999 the  Company has not  entered  into,  and as at the
         date of this  Agreement  it is not in the  course  of  negotiating  any
         agreement,  and there is no submitted  offer or tender which is capable
         of being converted into, an agreement:

         (a)      which  involves or may involve  obligations,  restrictions  or
                  expenditure  other than in the ordinary  course of business of
                  the Company;

         (b)      which  imposes  non-compete   restrictions  on  the  Company's
                  ability to carry on any business in any part of the world;

         (c)      pursuant to which the Company  has  advanced  money other than
                  trade credit, deposits,  prepayments or other advance payments
                  or payments on account made in the ordinary and proper  course
                  of business.

13.9     The Company has not given or received  notice  terminating any Material
         Contract.

13.10    There are not now  outstanding  any  Security  Interest  given by or in
         relation to the Company.

14       UNISSUED CAPITAL

14.1     There are no  agreements,  commitments  or  instruments  in force which
         require  or confer  the right  (conditionally  or  unconditionally)  to
         require  the issue or  transfer  of any share or loan  capital or other
         securities of the Company nor are there any agreements  restrictions or
         obligations  entered  into  by or  binding  on  the  Company  as to its
         unissued share or loan capital or other securities.



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15       LITIGATION, OFFENCES AND PROCESSES

15.1     Apart from  routine debt  collection  the Company is not engaged in any
         material litigation (whether criminal or civil), arbitration, reference
         of any dispute or disagreement to an expert or any alternative  dispute
         resolution  process and no such litigation,  arbitration,  reference or
         alternative dispute resolution process is pending or threatened and, so
         far as the  Vendors  are  aware,  there  are no facts or  circumstances
         likely to give rise to such litigation,  arbitration,  reference or any
         alternative dispute resolution process.

15.2     At the date hereof,  neither the Vendors nor the Company have  received
         any written notice that any regulatory  authority will revoke,  cancel,
         rescind, modify or refuse to renew any licences, authorisation, permits
         and  certificates  required to operate the business of the Company (the
         "LICENCES").

15.3     So far as the Vendors are aware,  they have not  received  any material
         written complaints  constituting  breach of contract from any person in
         relation  to the  provision  by the  Company  of the  various  services
         comprised  in the business of the Company  which it believes  should be
         brought to the attention of the Purchaser.

16       GRANTS

16.1     Full particulars of all grants, allowances,  aids and subsidies paid or
         made  to  the  Company  during  the  last  six  years  by,  and  of all
         outstanding claims by the Company for any such grant, allowance, aid or
         subsidy  from,  any  supranational,  national  or  local  authority  or
         government agency are set out in the Disclosure Letter. The Company has
         not done or failed to do  anything as a result of which all or any part
         of any investment or other grant,  allowance,  aid,  subsidy or similar
         payment  made or due to be made to the  Company is liable to be repaid,
         forfeited  or withheld in whole or in part and nor will the sale of the
         Shares have that result.

17       TRANSACTIONS WITH SHAREHOLDERS OR DIRECTORS

17.1     Save for trading  account  balances  arising in the ordinary  course of
         business,  no monies  are owed by the  Company to any  director  of the
         Company  or to the  Vendors or to any  person  connected  with any such
         director or the Vendors.

17.2     Save for trading  account  balances  arising in the ordinary  course of
         business,  the Company has no debts owed to it by its  directors or any
         of them or by the  Vendors  or by any  person  connected  with any such
         director or the Vendors.

17.3     There is no contract or arrangement which is other than on arm's length
         terms outstanding between the Company (on the one hand) and the Vendors
         or the Company's  directors or any person connected with the Vendors or
         any such director (on the other hand).

18       ADMINISTRATION

18.1     The  Disclosure  Letter  discloses  a true  and  accurate  copy  of the
         Memorandum  and Articles of  Association  of the Company  together with
         copies of all  resolutions  and other  documents  required by law to be
         attached to them.



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18.2     The  register  of members of the Company  contains a true and  accurate
         record of the members  and all former  members of the Company and their
         holdings of shares in the capital of the Company.

18.3     The statutory  books  (including all registers and minute books) of the
         Company have been properly  kept, do not contain any material  error or
         omissions and no notice or allegation  that any of them is incorrect or
         should be rectified has been received.

18.4     All  documents  which should have been  delivered by the Company to the
         Registrar of Companies have been properly so delivered.

19       CAPACITY OF THE VENDORS

19.1     Each Vendor is a duly incorporated  corporation and is validly existing
         under the laws of Delaware.

19.2     Each Vendor and each of its other  relevant  related  companies has the
         requisite  power and authority to enter into and perform this Agreement
         and the  Ancillary  Documents to be entered into by it pursuant to this
         Agreement.

19.3     This Agreement  constitutes and the Ancillary Documents executed by the
         Vendors and any of their related companies which are to be delivered at
         Completion will, when executed,  constitute binding obligations of each
         Vendor or its related  company (as the case may be) in accordance  with
         their respective terms.

19.4     The  execution and delivery of and the  performance  by the Vendors and
         their relevant related companies of their respective obligations under,
         this Agreement and the Ancillary Documents will not:

         (a)      result  in a breach  of any  provision  of the  memorandum  or
                  articles of association  of any of the Vendors,  their related
                  companies or the Company; or

         (b)      result in a breach  of, or  constitute  a default  under,  any
                  instrument  to  which  any  of  the  Vendors,   their  related
                  companies or the Company is a party or by which any of them is
                  bound; or

         (c)      result in a breach of any  order,  judgement  or decree of any
                  court or  governmental  agency  to which  any of the  Vendors,
                  their related  companies or the Company is a party or by which
                  any of them is bound; or

         (d)      require the consent of the shareholders any of the Vendors and
                  their related companies or the consent of any other person.

19.5     No order has been made or petition  presented or resolution  passed for
         the winding-up or administration of either of the Vendors, no distress,
         execution  or other  process  has been  levied on any of the  assets of
         either of the Vendors, no liquidation, provisional liquidator, receiver
         or administrative  receiver of either of the Vendors has been appointed
         and there is no reason to believe  that such person  might be appointed


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         in respect of its business or assets or any part thereof,  and no event
         has occurred in any jurisdiction  other than England and Wales which is
         analogous to any of the foregoing.

20       POWERS OF ATTORNEY

20.1     The  Company  has not given any power of  attorney  or other  authority
         (express,   implied  or  ostensible)  which  is  still  outstanding  or
         effective to any person to enter into any contract or commitment on its
         behalf  other  than to its  employees  to enter  into  routine  trading
         contracts in the normal course of their duties.

21       INSOLVENCY

21.1     No  order  has been  made and no  resolution  has been  passed  for the
         winding  up of  the  Company  or  for a  provisional  liquidator  to be
         appointed in respect of the Company and no petition has been  presented
         and no  meeting  has been  convened  for the  purpose of winding up the
         Company.

21.2     No administration order has been made and no petition for such an order
         has been presented in respect of the Company.

21.3     No receiver (which expression shall include an administrative receiver)
         has been  appointed  in  respect  of the  Company  or all or any of its
         assets.

21.4     The Company is not  insolvent,  or unable to pay its debts as they fall
         due.

21.5     No voluntary  arrangement  has been proposed under section 1 Insolvency
         Act 1986 in respect of the Company.

21.6     No event  analogous to any of the  foregoing has occurred in or outside
         England.

21.7     No unsatisfied judgement is outstanding against the Company.

21.8     No guarantee,  loan capital,  borrowed money or interest is overdue for
         payment by the Company,  and no other  obligation  or  indebtedness  is
         outstanding  which is substantially  overdue for performance or payment
         by the Company.

22       COMPETITION AND TRADE REGULATION

22.1     The Company is not a party and has not been a party during the last six
         years, to any agreement, arrangement or concerted practice which:

         (a)      is  subject  to  registration   under  the  Restrictive  Trade
                  Practices Act 1976 and 1977 (as amended);

         (b)      contravenes  the  provisions of the Resale Prices Act 1976 (as
                  amended) or any secondary  legislation  adopted under the Fair
                  Trading Act 1973;

         (c)      would infringe any provision of the  Competition  Act 1998, if
                  such provision were now in force:



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<PAGE>

         (d)      so far as the  Vendors  are aware  infringes  Article 81 or 82
                  (formerly  Articles 85 and 86) of the Treaty  establishing the
                  European Economic Community or any other anti-trust or similar
                  legislation in any  jurisdiction  in which the Company carries
                  on business or has assets or sales; or

         (e)      is void or unenforceable  (whether in whole or in part) or may
                  render  the  Company  liable  to  proceedings  under  any such
                  legislation as is referred to in paragraphs (a) to (d) above.

22.2     So far as the Vendors are aware,  there are no aspects of the Company's
         business which are or are likely to be subject to  investigation by the
         Office of Telecommunications in the United Kingdom.

23       INTELLECTUAL PROPERTY

23.1     Details of all rights in registered  Intellectual Property owned by the
         Company  are set out in the  Disclosure  Letter.  Such rights are owned
         legally  and  beneficially  by the  Company,  free  from  all  Security
         Interests  and all renewal fees  required for the  maintenance  of such
         rights have been paid.

23.2     So far as the Vendors  are aware,  the  Company is not  infringing  the
         Intellectual  Property rights or making  unauthorised use of the rights
         in confidential Business Information of any third party.

23.3     So far as the  Vendors  are aware,  no third  party is  infringing  any
         Intellectual  Property rights or making  unauthorised use of any rights
         in confidential Business Information owned by the Company.

23.4     So far as the Vendors are aware,  the  Company  has not  disclosed  any
         confidential   Business  Information  to  any  person  other  than  the
         employees  or  other  members  of  the  AT&T  Group,  except  under  an
         obligation of confidentiality.

23.5     The Intellectual Property and Business Information owned by or licensed
         to  the  Company  is  all  the   Intellectual   Property  and  Business
         Information that is necessary in all material  respects to carry on the
         business of the Company in the same manner that it is presently carried
         on.

23.6     The Company  has, if  required to do so under the Data  Protection  Act
         1984,  duly  registered as a data user and has complied in all material
         respects  with the Data  Protection  Act  Principles as set out in that
         Act.

24       INFORMATION TECHNOLOGY

24.1     The Company has made  enquiries as to the Year 2000  compliance  of the
         Information  Technology  of its  suppliers as listed in the  Disclosure
         Letter. Details of such enquiries made in relation to suppliers are set
         out in the Disclosure Letter.

24.2     The  Disclosure  Letter  sets out the  actions  taken by the Company in
         respect of Year 2000 compliance of the  Information  Technology and the
         steps  that  the  Company  has  taken  in  relation  to any  Year  2000


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<PAGE>

         compliance  recommendations  formally  communicated to it in writing by
         third party suppliers of Information Technology.

25       COMPUTER SYSTEMS

25.1     No person, other than the Employees, contractors, and independent third
         parties  under  development,   maintenance  or  support  contracts,  is
         entitled  to have access to or operate  any of the  Company's  owned or
         leased computer hardware.

25.2     The Company either:

         (a)      owns free from all claims,  liens,  charges,  encumbrances and
                  equities the copyright in all computer  software used by it in
                  relation to its business,  in which case it is entitled to use
                  and otherwise exploit that software without restriction; or

         (b)      has, so far as the Vendors are aware,  a valid and  subsisting
                  licence to use that  software  in respect of which the Company
                  has complied with its obligations in all material respects

         and in each case where bespoke software of material importance
         to the business of the Company has been developed for the Company,  the
         Company  has  rights  to  access  the  relevant  source  code  for that
         software.

25.3     The Disclosure  Letter sets out a summary of the Company's data back-up
         policies  and IT  disaster  recovery  policies  and there is set out at
         section II, file 2 of the Supplemental  Data Room the Company's manuals
         in  connection  with  such  policies  and the  Company  has  materially
         complied with the procedures set out in those manuals.

26       DATA ROOM

26.1     Since 28 January,  2000, no documents  have been added to the Data Room
         or amended other than as listed in the Supplemental Data Room Index.

27       LISTED CUSTOMERS

27.1     The Listed Data Customers and the Listed Voice Customers set out in the
         Wholesale  Agreement  are the same  customers as are referred to in the
         Framework  Agreement  of July 1999 between AUCS and members of the AT&T
         Group.







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                          Part B - Taxation Warranties

1        All accounts  computations  returns notices or information  ("RETURNS")
         required  to be made  submitted  or given to any Tax  Authority  by the
         Company (including,  without limitation, all Returns in respect of PAYE
         and  National  Insurance)  have been  properly  and duly  prepared  and
         punctually  made  submitted or given and are  up-to-date and correct in
         all material respects.

2        The  Company  is not  (and in the last  seven  years  has not  been) in
         dispute with or subject to any investigation by any Tax Authority other
         than  standard  visits or audits  and, so far as the Vendors are aware,
         there  are no facts or  circumstances  likely to give rise to or be the
         subject of any such dispute or investigation.

3        The Company has (to the extent  required by law) preserved and retained
         in its possession  complete and materially accurate records relating to
         Tax and the Company has sufficient  records  relating to past events to
         calculate for Tax purposes the profit,  gain, loss, balancing charge or
         balancing allowance which would arise on the disposal or realisation of
         any assets owned at the Accounts  Date or acquired  since that date but
         before Completion.

4        The  Company  has  paid  to the  relevant  Tax  Authority  all  Tax and
         deductions  or  withholdings  required to be deducted  including  those
         under the PAYE and National Insurance systems and in respect of any Tax
         chargeable on benefits  provided for its employees or former  employees
         and is not liable to pay any  interest,  penalty,  fine or surcharge in
         respect of any such Tax.

5        The Company is registered for VAT, is a taxable  person,  does not make
         any material exempt supplies and has complied in all material  respects
         with the  requirements of the VATA 1994 and all applicable  regulations
         and orders in respect of VAT.

6        The Company has, since 1 February 1995 been treated for the purposes of
         Section  43 VATA  1994 as a member  of a group of  companies  (the "VAT
         GROUP")  of  which  the  representative  member  is AT&T  (UK) Ltd (the
         "REPRESENTATIVE MEMBER").

7        The Representative Member (in relation to the Company) has made, given,
         obtained  and kept  full,  complete  correct  and  up-to-date  returns,
         records,  invoices and other documents  appropriate or required for the
         purposes  of VATA  1994  and is not in  arrears  with any  payments  or
         returns due.

8        No agreement or arrangements have been made or are in place under which
         the Company is or could  become  liable  (except as provided for in the
         Accounts)  to make any  payment  to the  Representative  Member (or any
         other  past or  present  member of the VAT Group) in respect of some or
         all of the Representative Member's liability to account to H.M. Customs
         and Excise for VAT.



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9        The  Company  has no assets to which  the  provisions  of Part XV Value
         Added Tax Regulations 1995 (the Capital Goods Scheme) apply.

10       The  Company has not at any time made any  election to waive  exemption
         under the provisions of VATA Schedule 10 for value added tax in respect
         of any land or buildings currently within its ownership.

11       All documents  required to prove the title of the Company to any assets
         owned at the date of this Agreement have been duly stamped.

12       Since the Accounts  Date the Company has not incurred any  liability to
         stamp duty reserve tax.

13       The Company is resident for tax purposes only in the United Kingdom and
         has never paid tax on income  profits or gains to any Tax  Authority in
         any other country.

14       So far as the  Vendors  are  aware,  the  Company  has  not  given  any
         indemnity in respect of any Taxation  under which it would be liable to
         make a payment in  consequence  of the  failure by any other  Person to
         discharge  that  Taxation,  where  the  Taxation  relates  to a profit,
         income,  gain,  transaction  or  event  arising,   occurring  prior  to
         Completion.

15       The Company has not since the Accounts  Date made any payment  which is
         or, so far as the Vendors are aware,  may be, treated as a distribution
         for the purposes of ICTA 1988 Sections 209 to 211.

16       So far as the  Vendors are aware,  the Company has not  disposed of nor
         has it  acquired  any  capital  asset  in such  circumstances  that the
         provisions of TCGA 1992 Section 17 could apply.

17       The Company has not at any time in the last 10 years  redeemed,  repaid
         or  purchased  or agreed to redeem,  repay or  purchase  any of its own
         shares.

18       The provision for deferred Taxation in respect of the Company contained
         in  the  Accounts  is  adequate  and  in  accordance  with  accountancy
         practices generally accepted in the United Kingdom.

19       The  Company  is not and has never  been a close  company as defined in
         ICTA 1988.

20       Instalment Payments etc.

20.1     The Disclosure Letter correctly  identifies  whether or not the Company
         is a  "large  company"  within  the  meaning  of  regulation  3 of  the
         Instalment Payments Regulations.

20.2     The Disclosure Letter contains full details of all instalment  payments
         required  to be made  by the  Company  under  the  Instalment  Payments
         Regulations  since the Accounts Date and of all  repayments  claimed by
         the  Company  under  the  Instalment  Payments  Regulations  since  the
         Accounts Date,  all such payments or repayments  have been duly made or


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         received,  and the  computation  of each  such  payment  or  claim  for
         repayment  took full and proper  account of all relevant  estimates and
         other  information  available  to the Company at the time when any such
         payment  was  required  to be made or (as the  case may be) at the time
         when any such claim for repayment was submitted to the Inland Revenue.

20.3     The  Company  has  sufficient  books,  documents,   records  and  other
         information  to enable it  promptly  to comply in full with any  notice
         served  on it under  regulations  10 or 11 of the  Instalment  Payments
         Regulations  in  respect of any  accounting  period  commencing  before
         Completion.

20.4     No action has been taken by the Company before Completion such that the
         provisions  of  regulation 14 of the  Instalment  Payments  Regulations
         could have effect in respect of the Company at any time.

21       The Company  has not,  at any time within the last six years,  acquired
         any  asset  from  any  other  company  which  was,  at the  time of the
         acquisition, a member of the same group of companies as the Company for
         the purposes of section 170 of Taxation of Chargeable Gains Act 1992.

22       Since  the  Accounts  Date  the  Company  has not  been a party  to any
         transaction  for which any tax  clearance  provided  for by statute has
         been or could have been obtained.










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                                   SCHEDULE 6

                  PROVISIONS FOR THE PROTECTION OF THE VENDORS

1        REMEDIES

1.1      Following  Completion,  a breach by the Vendors of any  Warranty  shall
         give rise only to an action by the  Purchaser for damages and shall not
         entitle the Purchaser to rescind or repudiate this Agreement.

1.2      Where the matter or default  giving rise to a breach of any Warranty is
         capable of remedy,  the  breach  shall not  entitle  the  Purchaser  to
         damages or other  compensation  unless  written notice of the breach is
         given to the Vendors  and the matter or default is not  remedied to the
         reasonable  satisfaction of the Purchaser within 30 days after the date
         on which such notice is served.

2        PARTIES TO CLAIMS

2.1      The Warranties and  indemnities  given by the Vendors in this Agreement
         shall be actionable  only by the  Purchaser (or any permitted  assignee
         under  clause  16.3)  and no party  other  than the  Purchaser  (or any
         permitted  assignee  under  clause  16.3) shall be entitled to make any
         claim or take any action  whatsoever  against  the  Vendors  under this
         Agreement.

3        EXCLUSION OF CERTAIN CLAIMS

3.1      No claim  shall be made by the  Purchaser  against  the Vendors and the
         Vendors  shall  not have  any  liability  to the  Purchaser  under  the
         Warranties:

         (a)      in respect of any liability or other matter or thing if and to
                  the  extent  that  liability,  matter or thing  would not have
                  arisen or occurred  but for an act,  omission  or  transaction
                  done,  made or carried out by the  Purchaser or the Company or
                  any of their respective directors, employees or agents:

                  (i)      before  Completion  at  the  written  request  of the
                           Purchaser; or

                  (ii)     after   Completion   where  the   Purchaser   was  or
                           reasonably  ought to have been  aware  that such act,
                           omission  or   transaction   would   result  in  such
                           liability PROVIDED THAT nothing in this sub-paragraph
                           shall  apply  to any  act,  omission  or  transaction
                           which:

                           (A)      is required by law; or

                           (B)      is required  pursuant  to a legally  binding
                                    commitment  of  the  Company  created  on or
                                    before Completion; or

                           (C)      is in the ordinary course of the business of
                                    the  Company  as  carried  out   immediately
                                    before Completion; or

         (b)      in respect of any matter  resulting from a voluntary change in
                  the  accounting  or  taxation  policies  or  practices  of the
                  Purchaser  or any  related  company  of the  Purchaser  or the


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<PAGE>

                  Company (including the method of submitting  taxation returns)
                  introduced or having effect after Completion; or

         (c)      in respect of any  liability  or other  matter or thing to the
                  extent  that  it  occurs  as  a  result  of  or  is  otherwise
                  attributable to:

                  (i)      any  legislation  not in force at the date  hereof or
                           any change of law or  administrative  practice having
                           retrospective effect which comes into force after the
                           date hereof; or

                  (ii)     any  increase  hereafter  in the rates of taxation in
                           force at the date hereof; or

                  (iii)    the Purchaser or the Company  disclaiming any part of
                           the  benefit of capital or other  allowances  against
                           taxation claimed on or before the date hereof; or

         (d)      in respect of a liability  which is contingent only unless and
                  until such contingent  liability  becomes an actual  liability
                  and is due and payable,  but this  paragraph  3.1(d) shall not
                  operate to avoid a claim made with reasonable particularity in
                  respect of a contingent  liability  within the applicable time
                  limits specified in paragraph 6.1;

         (e)      in respect of any matter or thing fairly disclosed in the Data
                  Room Documents;

         (f)      in respect of any matter or thing  disclosed in this Agreement
                  or in the execution and  performance  of this  Agreement or by
                  reason or in consequence  of the execution and  performance of
                  this Agreement;

         and the Warranties shall be deemed to be qualified accordingly.

4        ALLOWANCES AGAINST CLAIMS

4.1      The Vendors shall not be liable under the  Warranties in respect of any
         claim if and to the extent that:

         (a)      an  allowance,  provision or reserve is made in the  Accounts,
                  the Management  Accounts or the Working  Capital  Statement in
                  respect of the  specific  matter or thing  giving  rise to the
                  claim; or

         (b)      the loss in  respect  of which the  claim is made is  actually
                  recovered  in cash under a policy of insurance in force on the
                  date of such loss  (after  allowing  for the costs of recovery
                  and any  resulting  increase  in  insurance  premium)  and the
                  Purchaser  undertakes  with the  Vendors  that it will use all
                  reasonable  endeavours  to seek to recover such loss under any
                  policy of  insurance  which may cover the loss in  respect  of
                  which such claim might otherwise be made.



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4.2

         (a)      where the  Company or the  Purchaser  is or  becomes  entitled
                  (whether  under any insurance or by way of payment,  discount,
                  credit,  set off,  counterclaim  or otherwise) to recover from
                  any third party (including any fiscal or taxation authority or
                  body) any sum in respect of taxation or any other loss, damage
                  or liability which is or may be the subject of a claim against
                  the Vendors under this Agreement (including the Tax Covenant),
                  the Purchaser shall, if so required by the Vendors and subject
                  to paragraph  4.2(b),  take or procure the Company to take all
                  such  steps  or  proceedings  as the  Vendors  may  reasonably
                  require  to  enforce  such  recovery  at  the  Vendors'  cost.
                  However,  nothing  in this  paragraph  4.2 shall  require  the
                  Purchaser to commence  proceedings  unless counsel of at least
                  10 years standing gives an opinion that such  proceedings have
                  a  reasonable  prospect  of  success  and  provided  that  the
                  Purchaser is reasonably satisfied that the third party has the
                  financial means to make payment.

         (b)      the Purchaser shall procure that the Vendors are provided with
                  all such information and reports  concerning any such steps or
                  proceedings  taken  by the  Purchaser  or the  Company  as the
                  Vendors may from time to time reasonably request.

         (c)      if any such sum as is referred to in paragraph 4.2(a) shall be
                  recovered  by the  Purchaser  or the  Company  from the  third
                  party, any claim by the Purchaser or the Company in respect of
                  any  taxation or other loss,  damage or liability to which the
                  sum relates shall be limited  (without  prejudice to any other
                  limitations  on the  liability  of the Vendors  referred to in
                  this  Schedule)  to the amount (if any) by which the amount of
                  such claim exceeds the aggregate of:

                  (i)      the  sum  recovered  less  all  costs,   charges  and
                           expenses incurred by the Purchaser in recovering that
                           sum from the third party; and

                  (ii)     any sum or sums previously paid by the Vendors to the
                           Purchaser or the Company in respect of such claim,

4.3

         (a)      any liability of the Vendors under the Warranties  (other than
                  the Tax Warranties) in respect of any matter shall be computed
                  after   taking  into   account  and  giving   credit  for  any
                  corresponding  increase  in the value of the net assets of, or
                  other  saving by or benefit to, the  Purchaser or the Company,
                  in each case  solely to the extent  actually  realised  by the
                  Purchaser  or the Company as the case may be,  resulting  from
                  the same matter,  including  without  limitation any saving of
                  taxation.

         (b)      if the  Vendors  shall  have made any  payment in respect of a
                  claim under the  Warranties  and the Company  shall  receive a
                  benefit or refund  which the Vendors can  demonstrate  was not
                  taken into account in computing  their liability in respect of
                  the claim and would have reduced the  liability  had this been


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                  so, the Purchaser  shall  forthwith repay to the Vendors a sum
                  corresponding  to the  account by which the  Vendor's  payment
                  would have been  reduced  had such  benefit or refund,  as the
                  case may be, been taken into account.

5        THIRD PARTY CLAIMS

5.1      Subject to the Vendors indemnifying the Purchaser pursuant to paragraph
         5.2 below,  the Vendors  shall be entitled to require the Purchaser (in
         the name of the  Company if the  Vendors so  request) or the Company at
         the expense of the Vendors to take all such steps or proceedings as the
         Vendors may reasonably  consider necessary in order to avoid,  dispute,
         resist, mitigate,  compromise,  defend or appeal against any claim by a
         third party  against the Company which will or may give rise to a claim
         under the Warranties  other than the Tax Warranties (a "RELEVANT  THIRD
         PARTY CLAIM").

5.2      The Purchaser  shall act or shall procure that the Company shall act in
         accordance with any such  requirements  subject to the Purchaser and/or
         the Company being properly  indemnified to the reasonable  satisfaction
         of the  Purchaser  against all costs,  charges,  liability  damages and
         expenses  incurred  in  connection  with the  taking  of such  steps or
         proceedings.

5.3      For the purpose of  enabling  the  Vendors to avoid,  dispute,  resist,
         mitigate, compromise, defend or appeal against any relevant third party
         claim or to decide what steps or  proceedings  should be taken in order
         to do so, subject to the Vendors admitting  liability in respect of the
         relevant third party claim and  indemnifying  to Purchaser  pursuant to
         paragraph 5.2 above, the Purchaser shall:

         (a)      give  notice to the Vendors  within one month of any  relevant
                  third party claim or any circumstance giving or likely to give
                  rise to a relevant  third party claim  coming to its notice or
                  to the notice of the Company;

         (b)      subject  as   aforesaid,   give  the  Vendors  or  their  duly
                  authorised  representatives reasonable access to the personnel
                  of the  Purchaser  and/or the Company (as the case may be) and
                  to any  premises,  chattels,  accounts,  documents and records
                  which are  relevant  to such  claim and are  within the power,
                  possession  or control  of the  Purchaser  and/or the  Company
                  ("RELEVANT  ASSETS")  to enable  the  Vendors  and their  duly
                  authorised  representatives  to  investigate  the claim and to
                  examine and take copies or photographs of the relevant  assets
                  at their own expense; and

         (c)      subject as  aforesaid,  if the  Vendors so  request,  delegate
                  entirely to them the conduct of any  proceedings of whatsoever
                  nature  arising in connection  with the third party claim and,
                  in that  event,  give or cause to be given to the  Vendors all
                  such  assistance as they may  reasonably  require in disputing
                  the claim and instruct such  solicitors or other  professional
                  advisers as the Vendors may nominate to act in accordance with
                  their  instructions  on  their  behalf  or on  behalf  of  the
                  Company.

5.4      The Vendors  shall  reimburse  to the  Purchaser or the Company (as the
         case may be) all  costs,  charges  liabilities,  damages  and  expenses
         incurred by it in complying with its obligations  under  paragraphs 5.1
         to 5.3 inclusive  and,  subject as aforesaid,  the Purchaser  shall not


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         (and  shall  procure  that the  Company  shall  not)  accept  or pay or
         compromise  any relevant  third party claim or make any  submission  in
         respect of it.

5.5      The  provisions  of paragraph 8 of the Tax Covenant  shall apply to the
         Tax  Warranties  as if a  liability  under  the Tax  Warranties  were a
         liability under the Tax Covenant.

5.6      The Vendors  shall not accept or pay or compromise  any relevant  third
         party claim  without the prior written  consent of the Purchaser  (such
         consent not to be unreasonably withheld).

5.7      In the event that the  Purchaser  becomes  aware of any relevant  third
         party claim and the Vendors dispute that the relevant third party claim
         will or may  give  rise  to a claim  under  the  Warranties  or the Tax
         Warranties,  the Purchaser  shall,  in addition to any duty to mitigate
         arising by  operation  of law, be under an express duty to mitigate (or
         procure that the Company shall mitigate) the relevant third party claim
         and shall (or procure that the Company shall) take all reasonable  such
         steps or  proceedings  as may be necessary in order to avoid,  dispute,
         resist,  mitigate,  compromise,  defend or appeal against such relevant
         third party claim.

6        TIME LIMITS

6.1      No claim shall be brought by the Purchaser for breach of the Warranties
         or the Tax Covenant unless notice in writing of such claim  (specifying
         in  reasonable  detail with  supporting  evidence the event,  matter or
         default  which  gives rise to the claim and an  estimate  of the amount
         claimed) has been given to each of the Vendors :

         (a)      in the case of a claim under the Tax  Covenant or under any of
                  the Tax Warranties,  within 6 years after the end of the first
                  accounting period ending after Completion; or

         (b)      in any other case, within fifteen months after Completion.

6.2

         (a)      any such  claim  that may have been made  shall (if it has not
                  been previously satisfied,  settled or withdrawn) be deemed to
                  have been waived or withdrawn on the  expiration  of 12 months
                  after the date it was made unless court proceedings in respect
                  of it shall then have been commenced against the Vendors;

         (b)      for the purposes of paragraph 6.2(a) court  proceedings  shall
                  not be  deemed to have been  commenced  unless  they have been
                  both issued and served on the appropriate parties.

7        THRESHOLDS

7.1      For the purposes of paragraphs 7.2 and 7.3:



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         (a)      a "VENDORS' CLAIM" means a claim against the Vendors or either
                  of  them  for  breach  of  or  otherwise  in  respect  of  the
                  Warranties or under the Tax Covenant;

         (b)      any  references to  "MATERIAL"  or any similar  qualifications
                  expressed  in a Warranty  shall be relevant for the purpose of
                  establishing  whether  or not there is a  Relevant  Breach but
                  shall be  disregarded  in  qualifying  the loss in  respect of
                  which the resulting Vendors' claim is made;

         (c)      the  amount  of a  Vendors'  claim  shall  be  taken to be the
                  liability which the Vendors would have in respect of it in the
                  absence  of  any  exclusions  or   restrictions   under  those
                  paragraphs   but  taking   account  of  all   exclusions   and
                  restrictions of liability and allowances and set-offs provided
                  for and all repayments made under the preceding  provisions of
                  this Schedule;  and

         (d)      "THE   INDIVIDUAL    THRESHOLD"    means   an   amount   equal
                  to(pound)100,000  and  "THE  CUMULATIVE  THRESHOLD"  means  an
                  amount equal to (pound)500,000.

7.2      The Vendors  shall have no liability  in respect of any Vendors'  claim
         unless:

         (a)      that claim, when aggregated with all other connected claims or
                  claims arising from the same facts or circumstances exceeds in
                  value the individual threshold; and

         (b)      the amount of that claim when added to the aggregate amount of
                  all other Vendors'  claims (each of an amount greater than the
                  individual  threshold)  exceeds the  cumulative  threshold (in
                  which  case the full  amount of that  claim  and  those  other
                  claims shall be payable).

7.3      References to "(pound)" in this  paragraph 7 shall,  in relation to any
         relevant  claim  made in a  currency  other than  pounds  sterling,  be
         construed as  references to the  equivalent in pounds  sterling of such
         other  currency at the date the claim is made,  but such  equivalent in
         pounds  sterling  shall not  limit the  Vendor's  actual  liability  in
         respect of any Vendor's claim.

8        AGGREGATE MAXIMUM

8.1      The total  liability of the Vendors in respect of all  Vendor's  claims
         shall not exceed an aggregate amount equal to (pound)39,000,000.

9        NO DUPLICATION OF LIABILITY

9.1      The  Purchaser  and the Company  hereby agree with the Vendors that, in
         respect of any  matter  which may give rise to a  liability  under this
         Agreement:

         (a)      such liability shall not be met more than once;

         (b)      any  liability  with  respect  to such  matter  under  the Tax
                  Covenant  shall be deemed to be satisfied by the  satisfaction
                  of the  liability  with respect to such matter under any other
                  provision of this Agreement and vice versa; and



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<PAGE>

         (c)      any  liability  with  respect  to  such  matter  to any of the
                  Purchaser  or the Company  shall be deemed to be  satisfied by
                  the  satisfaction of the liability with respect to such matter
                  to either of them.

10       SUCCESSFUL CLAIMS DEEMED TO CONSTITUTE A REDUCTION IN PURCHASE PRICE

10.1     The  satisfaction  by the  Vendors of any claim  under  this  Agreement
         (including  the  Warranties  and the Tax  Covenant)  shall be deemed to
         constitute a reduction in the consideration payable by the Purchaser to
         the Vendors for the sale of the Shares.

11       RESTRICTION OF TAX WARRANTIES

11.1     The  provisions  of  paragraph  2 of  Schedule  3  (Restriction  of Tax
         Covenant) shall apply to the Tax Warranties  mutatis mutandis as if set
         out herein.









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                                   SCHEDULE 7

                                    PENSIONS

1        INTERPRETATION

1.1      This Schedule applies to the Pension Plans. Where the context requires,
         references to the Plans include its trustees.

2        DEFINITIONS

2.1      In this Schedule the following expressions have the following meanings:

"ACTIVE MEMBERS" means members of the Pension Plans in pensionable service;

"ACTUARIES" means the Vendors' Actuary and the Purchaser's Actuary;

"ACTUARY"means a  Fellow  of the  Institute  of  Actuaries  or a  Fellow  of the
         Faculty of Actuaries in Scotland;

"ACTUARY'S LETTER" means the letter from the Vendors' Actuary to the Purchaser's
         Actuary  relating to this  Schedule  dated 29 February  2000, a copy of
         which is Appendix A;

"APPENDIX" means an appendix to this Schedule;

"CONSENTING  MEMBERS"  means  those  Member  Employees  who are  Active  Members
         immediately   before  the  Pension  Transfer  Date  and  who  join  the
         Purchaser's  Scheme on the Pension  Transfer  Date and who consent to a
         transfer of their  rights  accrued  under the Plans to the  Purchaser's
         Scheme  (and who do not  revoke  such  direction,  become  entitled  to
         immediate  payment of their  benefits  or die before  the  transfer  is
         made);

"CONTRACTED-OUT  SCHEME",   "CONTRACTING-OUT  CERTIFICATE"  and  "CONTRACTED-OUT
         EMPLOYMENT" have the same meanings as in the Pension Schemes Act 1993;

"EXEMPT  APPROVED  SCHEME" has the same  meaning as in Chapter I Part XIV Income
         and Corporation Taxes Act 1988 and "EXEMPT APPROVED" shall be construed
         accordingly;

"GUARANTEED MINIMUM  PENSION" has the same meaning as in the Pension Schemes Act
         1993;

"INLAND REVENUE" means the Commissioners of Inland Revenue;

"INVESTMENT ADJUSTMENT" means the Investment Adjustment set out in the Actuary's
         Letter;

"MAIN    PLAN" means the AT&T ISTEL  Pension  Plan  established  by a definitive
         deed and rules dated 31 March 1989;



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<PAGE>

"MEMBER  EMPLOYEES"  means those employees of the Company who are Active Members
         at the Completion Date;

"MONEY PURCHASE SCHEME" has the meaning given in the Pension Schemes Act 1993;

"PARAGRAPH" means a paragraph of this Schedule;

"PAYMENT DATE" means the date 14 business  days after the Purchaser has notified
         the trustees of the Plans and the Vendors of:

         (a)      the date on which the Transfer  Amount is agreed or determined
                  pursuant to paragraph 6 or paragraph 11; and

         (b)      the  date  on  which  the  Purchaser  has  complied  with  its
                  obligations under paragraph 4;

"PENSION TRANSFER  DATE" means the date 6 months after the  Completion  Date; or
         such other date as may be agreed by the Vendors and the Purchaser;

"PLAN"   means either or both of the Main Plan and the  Supplementary  Plan (and
         ("PLANS")  shall be  construed  accordingly),  and  where  the  context
         requires  includes  the Main Plan  Trustee and the  Supplementary  Plan
         Trustee;

"PURCHASER'S ACTUARY" means Tariq Hameed of William M Mercer;

"PURCHASER'S  SCHEME"  means  the  scheme to be  nominated  in  accordance  with
         paragraph  4. Where the  context  requires,  the  "PURCHASER'S  SCHEME"
         includes its trustees;

"THE     SUPPLEMENTARY  PLAN" means the AT&T ISTEL  Supplementary  Pension  Plan
         established by a definitive deed and rules dated 31st March 1989;

"SECTION 9(2B) RIGHTS" has the meaning set out in the Contracting-Out  (Transfer
         and Transfer Payment) Regulations 1996 (SI 1996/1462)

"TRANSFER AMOUNT" is the sum calculated pursuant to paragraph 6.1;

"TRANSITIONAL PERIOD" means the period from and including the Completion Date up
         to but excluding the Pension Transfer Date;

"VENDORS' ACTUARY" means Simon Harris of Bacon and Woodrow;

This Schedule applies to each Plan separately.

3        THE TRANSITIONAL PERIOD

3.1

(a)      The Vendors  shall use all  reasonable  endeavours  to procure that the
         Company  and  the  Member   Employees  are  permitted  to  continue  to
         participate in the Pension Plans for the Transitional Period subject to
         the approval of the Inland  Revenue,  which  approval the Vendors shall
         use all reasonable endeavours to obtain.



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<PAGE>

         (b)      The Purchaser shall supply to the Vendors such  information in
                  its possession or control as may be required for obtaining the
                  approval  of the  Inland  Revenue to the  Company's  continued
                  participation in the Plans.

3.2

         (a)      The  Purchaser  and the  Vendors  shall use  their  respective
                  reasonable endeavour to cause the Member Employees to continue
                  to be in contracted-out employment by reference to the Pension
                  Plans throughout the Transitional Period

         (b)      the Purchaser  shall  procure that the Company will  surrender
                  any contracting-out  certificate it obtains in relation to the
                  Pension  Plans  under  paragraph  3.2 (a) with effect from the
                  Pension Transfer Date.

3.3      The  Purchaser  shall  procure  that the Company will in respect of the
         Transitional  Period promptly pay or collect and remit (as appropriate)
         to the  Pension  Plans  contributions  of the  amounts  set  out in the
         Actuary's Letter in respect of each Member Employee who participates in
         the Pension Plans.

3.4      Subject to  paragraph  3.7 if any  improvement  in  benefits  or change
         affecting  members'  contributions  is made under the Plans  during the
         Transitional  Period the Vendors shall  forthwith  inform the Purchaser
         and the Company of such  improvement  or change and the cost of funding
         it.

3.5      The Purchaser will during the  Transitional  Period (and subject to the
         requirements  of  paragraph  3.6  (b))  give  to  each  of  the  Member
         Employees:

         (a)      a notice offering  membership of the  Purchaser's  Scheme with
                  effect from Pension  Transfer  Date on terms which satisfy the
                  requirements of paragraph 4;

         (b)      a form of consent  addressed  to the Plans  consenting  to the
                  transfer from the Plans to the  Purchaser's  Scheme in respect
                  of their  accrued  rights under the Plans (if the Purchaser so
                  elects,  excluding their accrued rights to guaranteed  minimum
                  pensions,  and section 9(2B) rights, where any of these remain
                  payable under the Plans).

3.6      The Purchaser  shall not and shall procure that any related  company of
         the Purchaser will not during the Transitional Period

         (a)      take or omit any action which would  prejudice the approval of
                  the Plans as an exempt  approved  scheme or the Main Plan as a
                  contracted-out scheme;

         (b)      make any  announcements to the Member Employees on the subject
                  of the  Plans,  or (up to the date of  despatch  of the notice
                  pursuant to  paragraph  3) on the  subject of the  Purchaser's
                  Scheme  which are not  consistent  with  paragraph 4. For this
                  purpose,  the  Purchaser  must  supply  a  draft  of any  such
                  announcement  to the Vendors  prior to its issue,  and may not
                  issue such announcement  until the Vendors have confirmed that


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<PAGE>

                  it is consistent with paragraph 4, such confirmation not to be
                  unreasonably withheld or delayed;

         (c)      exercise any power or discretion as a  participating  employer
                  of the Plans  except on such terms  (whether  as to payment of
                  additional  contributions  or  otherwise)  as the  Vendors may
                  agree  in  writing  (such  agreement  not  to be  unreasonably
                  withheld or delayed);

         (d)      and shall use all  reasonable  endeavours  to procure that the
                  Purchaser's  Scheme  will not take any  action or  assist  any
                  Person in any manner which would result in the Plans having to
                  pay in respect of the  Consenting  Member a larger amount than
                  the Transfer Amount to the Purchaser's Scheme.

The  Purchaser  agrees that the  undertaking  at paragraph  3.6(d)  applies both
during and after the Transitional Period.

3.7      The Pension  Plans will not be amended  (except with the consent of the
         Purchaser,  such consent not to be unreasonably withheld or delayed) if
         any amendment:

         (a)      affects  the  rate  of  contributions  required  to be paid by
                  Member Employees during the Transitional Period;

         (b)      affects the rate of contributions of the Company; or

         (c)      reduces the amount, or adversely  affects the payment,  of the
                  Transfer Amount.

4        THE PURCHASER'S SCHEME

4.1      Before  the  Pension  Transfer  Date the  Purchaser  shall  nominate  a
         retirement  benefits  scheme or personal  pension  scheme  which at the
         Pension Transfer Date:

         (a)      will be an exempt  approved  scheme or capable of being exempt
                  approved;

         (b)      may  be  a  contracted-out   scheme  with  a   contracting-out
                  certificate covering the employment of the Consenting Members;

         (c)      will subject to the receipt of the Transfer Amount either,

                  (i)      provide  benefits for Consenting  Members (related to
                           member's salary on termination of pensionable service
                           under  the   Purchaser's   Scheme)   in   respect  of
                           pensionable service completed in the Plans before the
                           Pension Transfer Date which are in the opinion of the
                           Purchaser's Actuary as agreed by the Vendor's Actuary
                           at least equal in value on the assumptions set out in
                           the  Actuary's  Letter to those  that would have been
                           provided  in respect of that  pensionable  service in
                           the  Plans  assuming  that  the  Consenting   Members
                           remained in pensionable service under the Plans until
                           retirement leaving service or earlier death, and that
                           the Plans continued, unamended, until that date; or



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                  (ii)     apply the whole of the Transfer Amount exclusively to
                           provide  benefits  for and in respect  of  Consenting
                           Members without at the time of application making any
                           deduction from the Transfer Amount whatsoever whether
                           in commissions, fees or any other form.

4.2      The Purchaser will as soon as reasonably  practicable after the Pension
         Transfer  Date  produce  evidence to the Vendors  that the  Purchaser's
         Scheme meets each of the requirements set out in paragraph 4.1.

5        INFORMATION

5.1      The Purchaser shall upon request by the Vendors or the Vendors' Actuary
         promptly provide the Vendors with such documents and information in the
         Purchaser's  or the Company's  possession or control as the Vendors may
         require to  calculate  the  Transfer  Amount and to enable the Plans to
         obtain the  approval  of the Inland  Revenue to a transfer of assets to
         the  Purchaser's  Scheme in respect  of the  Consenting  Members  which
         approval the Vendors shall use all reasonable endeavours to obtain. The
         Purchaser  warrants  that such data shall be in all  material  respects
         true, complete and accurate.

6        CALCULATION OF TRANSFER AMOUNT

6.1      The  Vendors  will  instruct  the  Vendors'  Actuary to  calculate  the
         Transfer  Amount on the basis of the method and  assumptions set out in
         the Actuary's Letter.

6.2      The  Vendors  shall   instruct  the  Vendors'   Actuary  to  allow  the
         Purchaser's  Actuary such reasonable  access to the Vendors'  Actuary's
         calculations  of the Transfer  Amount and the information on which they
         are based as the Purchaser's  Actuary  reasonably  requires in order to
         check and agree that those calculations are mathematically  correct and
         in accordance with the terms of this Schedule.

6.3      Paragraph  10  applies  where  the  Purchaser's  Actuary  notifies  the
         Vendor's  Actuary  that he does not agree with the  amount of  Transfer
         confirmed to him under paragraph 6.1.

7        THE PAYMENT OF THE TRANSFER AMOUNT

7.1      The Vendors shall use reasonable endeavours to procure that each of the
         Plans transfers on or before the Payment Date to the Purchaser's Scheme
         in respect of the Consenting Members the Transfer Amount in the form of
         such assets as may be agreed  before the Payment  Date  between each of
         the Plans and the Purchasers Scheme.

7.2      The assets (if any) to be transferred from the Plans shall be valued at
         the  mid-market  price at the close of business on the  relevant  Stock
         Exchange two business days before the Payment Date.

7.3      If either Plan and the  Purchaser's  Scheme are unable to agree some or
         all of the particular  assets to be transferred or the mid-market value
         of any  such  assets,  the  payment  of the  Transfer  Amount  (or  the


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         appropriate  part of it) shall be  satisfied  by the Plan  transferring
         cash  equal to that part of the  Transfer  Amount in  respect  of which
         there has been no agreement as to the assets to be transferred.

7.4      There will be deducted from the Transfer Amount any sums, including but
         not limited to sums payable under paragraph 3.3, owed by the Company to
         the relevant Plan on the Payment Date.

8        SHORTFALL

8.1      The Vendors  undertake (as principal and not as  guarantor),  not later
         than 10 days after receipt of a written demand from the  Purchaser,  to
         pay to the Purchaser (or at the Purchaser's  direction to the Company),
         by way  of an  adjustment  to  the  consideration  payable  under  this
         Agreement an amount in cash (the "Shortfall") equal to:

         (a)      the Transfer Amount;

         LESS

         (b)      the  amount  or  value  of  assets  actually  received  by the
                  Purchaser's Scheme at the date of the written demand,

adjusted by the Investment  Adjustment  from the Payment Date to the actual date
         of payment under this paragraph.

8.2      Any Shortfall payment shall be the amount determined in accordance with
         this  paragraph  reduced  by  such  percentage  as  is  agreed  by  the
         Purchaser's  Actuary and the Vendor's  Actuary (or, in default of their
         agreement,  as is determined under the disputes  procedure in paragraph
         10) to be  appropriate  to reflect the value to the  Purchaser  (at the
         time of  payment  of the  Shortfall)  of the tax  deductions  which the
         Purchaser  would obtain  assuming it were to pay an amount equal to the
         Shortfall into the Purchaser's Scheme forthwith upon the receipt of the
         Shortfall.

9        MEMBER'S ADDITIONAL VOLUNTARY CONTRIBUTIONS

9.1      The Vendors shall use all reasonable  endeavours to procure that on the
         Payment  Date the Plans shall  transfer to the  Purchaser's  Scheme any
         assets representing additional voluntary  contributions  (excluding any
         part of Members'  Premium Pay Accounts  referred to in  paragraph  9.2)
         paid to the Plans by the  Consenting  Members other than any additional
         voluntary   contributions   which  have  been  taken  into  account  in
         calculating the Transfer Amount under paragraph 6.

9.2      The Vendors shall use all reasonable  endeavours to procure that on the
         Payment  Date the Plans shall  transfer to the  Purchaser's  Scheme any
         assets  representing the value of the Premium Pay Accounts (as referred
         to in Rule 23.15.3(b) in the Main Plan)  attributable to the Consenting
         Members other than any Premium Pay Accounts  which have been taken into
         account in calculating the Transfer Amount under paragraph 6.



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10       REFERENCE TO INDEPENDENT ACTUARY

10.1     If the Purchaser's  Actuary  notifies the Vendors' Actuary that he does
         not agree the  amount of the  Transfer  Amount  certified  to him under
         paragraph  6.1 , the Actuaries  shall attempt to reach  agreement as to
         the Transfer  Amount but if no such agreement is reached within 28 days
         of the  Purchaser's  Actuary  notifying his original  disagreement  the
         matter may be referred to an independent  Actuary  appointed jointly by
         the  Vendors  and the  Purchaser.  If they fail  jointly to appoint the
         Actuary, paragraph 10.2 applies.

10.2     Where this  paragraph  10.2 applies the matter shall be referred to and
         determined by an independent Actuary appointed by the President for the
         time being of the Institute of Actuaries on the  application  of either
         the Vendors or the Purchaser, whichever shall first apply.

10.3     The  independent   Actuary  shall  determine  the  Transfer  Amount  in
         accordance  with  this  Schedule  acting  as an  expert  and  not as an
         arbitrator and his decision (and any interim directions) shall be final
         and binding and his expenses shall be borne as he directs.

11       VENDORS' INDEMNITY

11.1     The Vendors shall  indemnify and keep  indemnified  the Purchaser,  the
         Company and any Member of the  Purchaser's  Group against all payments,
         damages,  losses,  costs and  expenses  (including  legal  expenses) of
         whatever  nature arising from, or in connection  with, any liability of
         the Company under section 75 of the Pensions Act 1995  referable to its
         participation in a retirement benefits scheme before Completion.

11.2     "Member of the Purchaser's  Group" means the Purchaser,  any subsidiary
         (as defined by section 736 of the Companies Act 1985) and any associate
         (as defined by section 435 of the Insolvency Act 1986).

11.3     Notwithstanding  any other  provision of the Agreement,  this indemnity
         shall not be limited  in amount  but shall  only  apply to claims  made
         within 12 years of the Pension Transfer Date.

12       NOTICE OF WITHDRAWAL

12.1     The  Purchaser  shall procure that  immediately  after  Completion  the
         Company  gives  to the  trustees  of the UK  Plan a  signed  notice  of
         withdrawal in the form set out in Appendix C to this Schedule.

13       FORM OF CONFIRMATION AND DISCHARGE

13.1     The  Purchaser  shall  use its  best  endeavours  to  procure  that the
         trustee(s) of the  Purchaser's  Scheme give the trustees of each of the
         Plans a form of  confirmation  and discharge in respect of the Transfer
         Amount  substantially  in the  form  set  out  in  Appendix  B to  this
         Schedule.



                                       94
<PAGE>

14       The Vendors  shall use their best  endeavours  to procure that within 3
         months of  Completion  the  Trustees  of the UK Plan  shall  secure the
         accrued  rights  (including  appropriate  allowance  for future  salary
         increases) of John Ault (the "MEMBER") at Completion,  whether  arising
         under  the UK Plan or under a letter  to him  dated 13 June  1988.  The
         Vendors shall indemnify and keep indemnified the Purchaser, the Company
         and any member of the Purchaser's  Group (as defined above) against any
         claims by the  Member for  benefits  arising  by  reference  to service
         before Completion.














                                       95
<PAGE>




                                   APPENDIX A

                                ACTUARY'S LETTER













                                       96
<PAGE>




                                   APPENDIX B

                       FORM OF CONFIRMATION AND DISCHARGE

To:  The Trustees of the AT&T ISTEL [Supplementary] Pension Plan (the "Plan")

We, the Trustees of the  Purchaser's  Pension  Scheme refer to an agreement made
the [ ]  between  [ ]  and [ ]  (the  "Agreement")  and  in  particular  to  the
provisions relating to pension matters set out in Schedule 7 to the Agreement.

We  acknowledge  having  received  a  Transfer  Amount  in  connection  with the
Agreement of(pound)[ ] and confirm that:

1        The payment of the Transfer Amount  discharges the trustees of the Plan
         from all further  liability and  obligations  under the Plan for and in
         respect of the persons  whose names are set out in the list  annexed to
         this form; and

2        The Transfer Amount will be applied in accordance with paragraph 4.1 of
         Schedule 7 to the Agreement.


 ...................................................
[the Trustees of the Purchaser's Scheme]











                                       97
<PAGE>




                                   APPENDIX C

                              NOTICE OF WITHDRAWAL

To: The trustees of the AT&T (UK) LTD Retirement Benefits Plan (the "Plan")

We, being AT&T Communications (UK) LTD, give notice under clause 19(b)(i) of the
Second  Definitive  Deed and  Rules of the Plan  dated 29  November  1999 of our
intention to:

         (a)      terminate our participation in the Plan; and

         (b)      terminate  our  liability,  and the  liability of those of our
                  employees  who are members of the Plan,  to  contribute to the
                  Plan,

with effect from 31 May 2000.



Signed  ......................................................
         for and on behalf of AT&T Communications (UK) LTD









                                       98
<PAGE>




                                   SCHEDULE 8

      PREPARATION OF THE 31/12/99 ACCOUNTS AND THE COMPLETION DATE ACCOUNTS

                                     PART A

                                     GENERAL

1        Until both the 31/12/99  Accounts and the Completion Date Accounts have
         been signed off by the Auditors  producing a signed audit  certificate,
         as provided below:

1.1      the  Purchaser  shall give or procure  that the Vendors or the Auditors
         are given  access at all  reasonable  times to all  relevant  books and
         records which are in the possession or under the control of the Company
         or the Purchaser (as the case may be); and

1.2      the Purchaser shall generally provide the Vendors and the Auditors with
         such other  information  and assistance as they may reasonably  require
         (including  access to and assistance at reasonable times from personnel
         employed  by the  Company  or the  Purchaser,  as the  case  may be) in
         relation to the audit of the 31/12/99  Accounts and the Completion Date
         Accounts.

2        The  Purchaser  undertakes  to the Vendors to procure that the Auditors
         remain the auditors of the Company until the audit  certificate for the
         31/12/99  Accounts and the Completion Date Accounts have been signed by
         them.

3        The Vendors and the  Purchaser  shall use their  respective  reasonable
         endeavours to comply with the requirements  placed upon them under this
         Schedule 8 (including,  without limitation,  the provisions relating to
         timing).

4        All  reasonable  costs and  expenses  incurred  by the  Vendors and the
         Purchaser  in  connection  with the  preparation  and  approval  of the
         31/12/99  Accounts and the  Completion  Date Accounts  pursuant to this
         Schedule 8 shall be for their own  account  and be borne by the Vendors
         and the  Purchaser  respectively,  save that the whole of the Auditor's
         fees in connection  with the preparation of both sets of accounts shall
         be borne by the Vendors and the Vendors  hereby agree to indemnify  and
         keep  indemnified  the Purchaser  against all such Auditor's  costs and
         expenses.

5        The Purchaser  shall procure that the internal  accounting  team of the
         Company (consisting of Robin Anthony and his department) is deployed to
         the Vendors'  reasonable  request in the  preparation  and audit of the
         31/12/99 Accounts and the Completion Date Accounts.  It is acknowledged
         that the  reasonableness  of any Vendors' request will be determined in
         the context of the  importance  to the Guarantor of the delivery of the
         31/12/99  Accounts by 15 April 2000 and the  Vendor's  liability to the
         Guarantor  in   liquidated   damages  for  any  failure  to  meet  such
         requirement.

6        It is  acknowledged  and agreed that, in determining the application of
         resource  pursuant to this schedule 8, the 31/12/99 Accounts shall take
         priority.





                                       99
<PAGE>





                                     PART B

                                31/12/99 ACCOUNTS

1        The Vendors and the Purchaser  shall  jointly  procure that, as soon as
         reasonably  practical  following  Completion and in any event not later
         than 15th April 2000, the 31/12/99 Accounts shall have been audited and
         the auditors shall have signed the audit opinion and delivered the same
         to the Guarantor.

2        The  31/12/99  Accounts  shall be prepared  subject to  paragraph  2(b)
         below, in accordance with and on the basis of consistent application of
         US GAAP and the accounting  policies,  principles and practices applied
         and adopted in the preparation of the Accounts.

3        For the purposes of preparing the 31/12/99 Accounts as soon as possible
         after the Completion Date, the Vendors will provide the services of Sue
         Hele  (at  Quadrant  House  for two  consecutive  days  per week and at
         Highfield  House  for one  other  day per  week)  to  assist  with  the
         management of the audit process for those accounts as follows:

         (a)      to  interface  with the  Auditors  and to use the  strength of
                  AT&T's existing relationship with the Auditors to expedite the
                  process;

         (b)      to liaise  with the  Vendors'  UK based and New  Jersey  based
                  shared service  centre  management to ensure that the Vendors'
                  appropriate resources are committed to the process;

         (c)      to partner with and liaise with Robin  Anthony and his team to
                  ensure that a project plan for the audit is established.

4        The Vendors acknowledge that if the 31/12/99 Accounts are not delivered
         to the Guarantor by 15 April 2000 in accordance with paragraphs 1 and 2
         above,  the  Guarantor  will  suffer  a loss as a result  of not  being
         permitted to make appropriate  filings with the Securities and Exchange
         Committee  necessary  to  enable  it to  raise  capital  in the  public
         markets. Under such circumstances and in consideration of the Guarantor
         agreeing to guarantee the obligations of the Purchaser pursuant to this
         Agreement,  the Vendors  shall pay to the Purchaser the sum of $100,000
         for  every day  after 15 April  2000  until  delivery  of the  31/12/99
         Accounts.





                                      100
<PAGE>





                                     PART C

                            COMPLETION DATE ACCOUNTS

1        The  Vendors and  Purchaser  shall  jointly  procure  that,  as soon as
         reasonably  practical  following  Completion and in any event not later
         than 30th June 2000, the signed audited  Completion Date Accounts shall
         have been prepared.

2        The Completion  Date Accounts  shall be prepared in accordance  with UK
         GAAP  and on the  basis of  consistent  application  of the  accounting
         policies,   principles  and  practices   applied  and  adopted  in  the
         preparation  of the 31st December 1998 accounts of the Company (set out
         in section I, file 1.9.9 of the Data Room).

3        The Completion Date Accounts shall not show any liability in respect of
         the VAT assessment raised on AT&T (UK) Ltd as representative  member of
         the VAT group relating to VAT refunded to the Company and any liability
         in respect of this shall remain with AT&T (UK) Ltd.

4        The Purchaser shall procure that the Company adopts the Completion Date
         Accounts  as its  statutory  accounts  for the 14 month  period to 29th
         February 2000 and files them at Companies House within 14 days of their
         date of adoption.

5        The Purchaser acknowledges that if the Completion Date Accounts are not
         prepared  by 31  December  2000 the  Vendors  shall not be able to make
         filings for US tax purposes.  Accordingly, the Parties have agreed that
         the  Vendors  shall  have the right to  require  the  Purchaser  to pay
         $100,000 for every day after 31st December  2000 until  delivery of the
         Completion Date Accounts.





                                      101
<PAGE>





                                   SCHEDULE 9

          WORKING CAPITAL STATEMENT ACCOUNTING POLICIES AND PRINCIPLES

                           A. POLICIES AND PRINCIPLES

                       ACCOUNTING POLICIES AND PRINCIPLES

Subject to the specific policies noted below the Working Capital Statement is to
be prepared in accordance with UK GAAP and the accounting  policies,  principles
and  practices  of the  Company  which  are those  applied  and  adopted  in the
preparation of the Company's  statutory  accounts for the year ended 31 December
1998  (set out in  section  I, file  1.9.9 of the Data  Room).  Necessarily  the
policies  set  out  in the  Vendors'  statutory  accounts  do  not  describe  in
sufficient detail, in certain areas, how these policies are to be applied in the
preparation of the Working Capital Statement.  Therefore,  and for the avoidance
of doubt,  the  statements  below  clarify in greater  detail how the  Company's
accounting  policies  are  to  be  applied  in  preparing  the  Working  Capital
Statement.

The Working Capital Statement will be prepared in accordance with the historical
cost convention.

The  Working  Capital  Statement  will  list  all the  FACCT  codes,  which  are
amalgamated to form the individual elements of Working Capital.

1 1      PROVISION FOR BAD AND DOUBTFUL DEBTS

         A 75%  provision for debts over 90 days,  and 100%  provision for debts
         over 121 days are provided, ageing being based on the invoice due date.
         In addition,  those debtors in liquidation or receivership are provided
         for in  full.  No bad  debt  provision  will be made  with  respect  to
         intra-AT&T Group balances.  The above policy will not be applied to the
         debtor  balances in relation to AUCS and X-TANT.  These will be treated
         on an individual basis because of the nature of the  relationship.  Bad
         debt  provisions  will not be made on debts  covered  by a credit  note
         provision.

1        CREDIT NOTES PROVISION

         These are specific provisions relating to customer invoices whereby the
         credit notes will be raised in relation to a prior period of trading.

2        HOME OFFICE ACCOUNT

         Home Office account will be cleared to zero prior to Completion

3        NON CURRENT PORTION OF SDH LEASE

         Only 12 months  worth of the SDH lease  debtor will be shown in current
         assets at any month end position.





                                      102
<PAGE>







                     B. PRO FORMA WORKING CAPITAL STATEMENT



FACCT                              DESCRIPTION                            VALUE
- --------------------------------------------------------------------------------

10102000        Cash at bank                                                  0
10105100                                                                      0
10105520                                                                      0
10107719                                                                      0
10111000                                                                      0
                                                               -----------------
                                TOTAL CASH & BANK                             0
                                                               -----------------

11164100        Trade debtors                                                 0
11164200        Accrued income                                                0
11164300        Unallocated cash                                              0
11167000        Trade debtors                                                 0
11264100        Trade debtors                                                 0
11264200        Accrued income                                                0
11267000        Home office                                                   0
11316000        Bad debt/credit note provisions                               0
14103900        Employee receivables - Other                                  0
14105000        Interest - receivable external                                0
14190000        AUCS accrued income                                           0
14290000                                                                      0
16101010        Prepayments                                                   0
16102000        Prepayments                                                   0
16103430        Prepayments                                                   0
16103500        VAT                                                           0
16107000        Prepayments                                                   0
16190000        Prepayments and SDH lease                                     0
                Non current portion of SDH in above account                   0
16201000        Asset disposal holding account                                0
16290000        Non AUCS Service Provider accrued income                      0
19117000        Holding account for expenses to be recharged out              0
                                                                  --------------
                              TOTAL CURRENT ASSETS                            0
                                                                  --------------

20101010        Trade creditors                                               0
20101220        Accrued invoices                                              0
20104000        Clearing account for int'l settlements                        0
20190000        Accrued invoices                                              0
20201000        Trade creditors                                               0
20201020        Home office                                                   0

                                      103
<PAGE>

20281000        AT&T accruals                                                 0
21301000        Foreign income tax                                            0
22212000        Payments in after cash book close                             0
22103000        Employee related accruals                                     0
22114000                                                                      0
22115000        Accrued health plans insurance                                0
22130010                                                                      0
22130130                                                                      0
22130160                                                                      0
22130180        Accrued health plans insurance                                0
22130410                                                                      0
22130420                                                                      0
22130450                                                                      0
22131900                                                                      0
22155080                                                                      0
22190090                                                                      0
22202000                                                                      0
22203000        Customer deposits                                             0
22212000                                                                      0
22358100        VAT                                                           0
22358110        VAT                                                           0
22358120        VAT                                                           0
22358200        VAT                                                           0
23259000        Accrued interest                                              0
                                                                  --------------
                            TOTAL CURRENT LIABILITIES                         0
                                                                  --------------

                                                                  --------------
                                 WORKING CAPITAL                              0
                                                                  --------------








                                      104
<PAGE>


                                   SCHEDULE 10

                         ANCILLARY TRANSITIONAL MATTERS

1        Each party will  appoint two  persons to be members of a working  party
         ("WORKING PARTY")  constituted with a view to achieving a resolution of
         issues in relation to the  transitional  services or business  critical
         requirements  of each party which were  unforeseen  at the date of this
         Agreement.

         (a)      Allan Macfarlane and David Bonner from the Company; and

         (b)      Sue Hele and Charles Pickering from the Vendors.

2        Either party may replace  either of its Working Party members by giving
         written notice to the other.

3        Unless  otherwise  agreed  the  Working  Party  shall meet once a month
         during  the  period of six  months  after  the date of this  Agreement.
         Thereafter  the Working Party will meet on a mutually  convenient  date
         within 14 days  following one party giving  written notice to the other
         that it requires a meeting of the Working Party.

4        The Working Party shall meet at a mutually  convenient  location within
         the United Kingdom. It is contemplated by the parties that the location
         for the meeting of the  Working  Party shall  rotate  between  suitable
         premises of the Company and suitable  premises of the AT&T Group within
         the United Kingdom.

5        The  agenda  for each  meeting  of the  Working  Party  shall  wherever
         possible be agreed at least 24 hours before the start of each  meeting.
         Minutes of each Working  Party  meeting shall be sent to all members of
         the Working Party within 48 working hours following each meeting.

6        At the date of this Agreement it is anticipated  that the Working Party
         will be required to work towards the resolution of the following  items
         (amongst others):

         (a)      formalising  confirmation that the Company is validly licensed
                  to  use  Oracle  products  used  by it at  the  date  of  this
                  Agreement;

         (b)      documenting  and  formalising  arrangements in relation to the
                  use of the X-TANT X25  network by the  Company in  relation to
                  the CMS400 system and shared use of that system;

         (c)      the use by the Company of the  att.com  domain name suffix and
                  its transition to an alternative domain name suffix.

7        The  provisions  of this  Schedule  are without  prejudice to the legal
         rights and  obligations  of respective  parties under this Agreement or
         the Transitional Services Agreement.




                                      105
<PAGE>




SIGNED BY RICHARD JEPHCOTT          )
for and on behalf of                )
AT&T COMMUNICATIONS                 )
SERVICES INTERNATIONAL INC.         )          /s/ Richard Jephcott
                                               ---------------------------------
                                               Duly Authorised Attorney








SIGNED BY KAREN CLARK               )
for and on behalf of                )
GLOBAL CARD HOLDINGS INC.           )          /s/ Karen Clark
                                               ---------------------------------
                                               Duly Authorised Attorney


SIGNED BY SHELDON GOLDMAN           )
for and on behalf of                )
VIATEL, INC.                        )          /s/ Sheldon Goldman
                                               ---------------------------------
                                               Duly Authorised Attorney







SIGNED BY SHELDON GOLDMAN           )
for and on behalf of                )
VIATEL GLOBAL                       )
COMMUNICATIONS LIMITED              )          /s/ Sheldon Goldman
                                               ---------------------------------
                                               Duly Authorised Attorney








                                      106
<PAGE>




                                   APPENDIX A

                          LISTED CUSTOMER AND SERVICES








                                      107
<PAGE>




                                   APPENDIX B

                           PRIVATE TRANSIT DRAFT TERMS








                                      108


                                                                    EXHIBIT 99.1



FOR IMMEDIATE RELEASE

CONTACTS FOR VIATEL:
Glenn K. Davidson, Vice President, Communications & External Affairs
Cindy Glynn, Director, Investor Relations
+1-212-350-9200

CONTACTS FOR AT&T COMMUNICATIONS UK:
John Hindle or Gina Adams, Landmark Communications, +44-171-318-6900

CONTACTS FOR AT&T:
Phil Coathup, AT&T EMEA Public Relations, +44 (0) 1527 493549
James Gunn, AT&T Media Relations - UK, +44 (0) 20 7908 6431


VIATEL ACQUIRES AT&T'S UK SUBSIDIARY

o        EXPANDS  VIATEL'S   PAN-EUROPEAN   BROADBAND  NETWORK  BY  1,700  ROUTE
         KILOMETERS, LINKING 19 MAJOR CITIES THROUGHOUT THE UNITED KINGDOM.
o        ACCELERATES  VIATEL'S  PROVISION OF DATA SERVICES WITH FRAME RELAY, ATM
         AND IP SERVICE  OFFERINGS.  o INCREASES VIATEL'S BASE OF ENTERPRISE AND
         SME CUSTOMERS.
o        GIVES VIATEL PRIVATE INTERNET PEERING.
o        SIGNIFICANTLY   EXPANDS   VIATEL'S   TEAM  OF  MARKETING   AND  PRODUCT
         DEVELOPMENT PROFESSIONALS.

NEW YORK, NY -- FEBRUARY 29, 2000 -- VIATEL, INC. (NASDAQ: VYTL) today announced
that it has acquired AT&T  Corporation's  (NYSE:  T) United Kingdom  subsidiary,
AT&T COMMUNICATIONS (UK) LTD.

Concerning  the  transaction,  Michael J. Mahoney,  Viatel's  Chairman and Chief
Executive  Officer,  said:  "This is a significant  transaction  for Viatel.  It
allows us to expand our pan-European  network  throughout the UK. It brings with
it a group  of  dedicated  professionals  who know how to  develop,  market  and
support a broad  suite of  products  and  services  for the  Enterprise  and SME
markets.  It accelerates the Company's entry into the provision of data services
such as frame relay,  ATM and IP. And it adds  significantly  to our UK customer
base, not only in numbers,  but also in scale; AT&T Communications' UK customers
include many UK and pan-European corporations."

John Haigh,  President of AT&T's International Ventures organization said: "AT&T
is very proud of AT&T Communications (UK) Ltd.'s considerable achievements since
its inception in 1994. The sale comes as part of AT&T's restructuring within the
UK, with the creation of `Concert,' the global venture  between AT&T and BT. The
move is a positive step forward for customers and employees alike."


<PAGE>

The  transaction  -- which was  completed  on  Tuesday,  February  29 -- will be
accounted for as a purchase.

Among the transaction's benefits to Viatel are:

o        A  pan-European  network  expansion  throughout the UK. The backbone of
         AT&T's former network is a 1,700 route  kilometer SDH fiber optic ring,
         comprised of multiple fiber pairs,  linking the cities of London, Ware,
         Bedford, Leicester,  Nottingham,  Sheffield, Leeds, Edinburgh, Glasgow,
         Manchester,   Newcastle  U  Lyme,   Stafford,   Birmingham,   Redditch,
         Gloucester, Bristol, Swindon, Newbury, Langley and Hayes;
o        Additional interconnection with the primary UK carriers -- BT and Cable
         & Wireless Communications.  PSTN access and egress are provided through
         approximately  50  points  of  interconnection,   providing  access  to
         approximately 95% of the UK population.
o        An  extensive  product and service  portfolio  --  including  such data
         service  offerings as frame relay, ATM and IP -- that may be offered to
         Viatel customers  throughout  Europe,  in addition to the existing AT&T
         Communications  UK customer  base.  The Company also offers  direct and
         indirect Internet access;  domestic telephony services to small, medium
         and large corporate customers;  software defined network services;  and
         carrier and reseller services;
o        Blue-chip  corporate  customers,  including  300  of the  top  UK-based
         pan-European   corporations   and  over  320  small  and   medium-sized
         enterprises.
o        And a team of 400  dedicated  employees  able to develop  products for,
         sell to and support Enterprise and SME customers.

As a result of the transaction, the combined company will have:

o        A  larger  products  and  services   portfolio  with  greatly  enhanced
         offerings for Enterprise and SME-level customers;
o        Extensive operations throughout Western Europe:
         o        A fully licensed provider of telecommunications services in 10
                  European countries (Austria, Belgium, France, Germany,
         o        Ireland,  Italy, The Netherlands,  Spain,  Switzerland and the
                  United  Kingdom);   o  Operational   interconnection  with  10
                  incumbent   telecommunications   providers   (BT,   Cable  and
                  Wireless,  KPN,  Belgacom,  Telecom  Italia,  France  Telecom,
                  Deutsche Telekom, Swisscom, Telefonica and Telekom Austria);
o        An expanded network with:
         o        Nearly 5,000 route  kilometers  of  high-capacity  fiber-optic
                  network   infrastructure  already  in  commercial  service  in
                  Western  Europe.  An  additional  5,400  route  kilometers  is
                  scheduled to go into service by year-end 2000.
         o        Over 250  network  points of  interconnection  in Europe,  the
                  United States and Canada.

Credit Suisse First Boston acted as financial advisor to Viatel.

ABOUT  VIATEL:  Viatel,  Inc.  is a rapidly  growing  provider  of all  distance
communications  services  to  individuals,  corporations,  ISPs,  ASPs and other
carriers  in Europe and North  America.  The  Company is a licensed  provider of
telecommunications  services  in Austria,  Belgium,  France,  Germany,  Ireland,
Italy, The Netherlands,  Spain,  Switzerland,  the United Kingdom and the United
States.  It currently  operates an international  network,  with gateways in New
York and London;  network operations centers in Egham, England and Somerset, New
Jersey; and network points of interconnection in over 250 cities.


<PAGE>

As a result of this  transaction,  Viatel's  advanced  fiber-optic  pan-European
network will consist of 10,400 announced route kilometers serving 59 cities when
completed. Over 5,000 route kilometers linking London, Ware, Bedford, Leicester,
Nottingham,  Sheffield, Leeds, Edinburgh, Glasgow, Manchester, Newcastle U Lyme,
Stafford, Birmingham,  Redditch, Gloucester,  Bristol, Swindon, Newbury, Langley
and Hayes in the United  Kingdom;  Amsterdam and  Rotterdam in The  Netherlands;
Brussels,  Antwerp,  Charleroi, Ghent, Hasselt, Kortrijk, Liege, Mons, Namur and
Tournai  in  Belgium;  Paris,  Amiens,  Nancy  and  Strasbourg  in  France;  and
Dusseldorf,  Frankfurt  and  Mannheim  in Germany -- are  already in  commercial
service and carrying  traffic.  Construction of Circe's third phase - which will
link an  additional  11 German  cities to the  network - is nearing  completion.
Phases Four and Five -- creating  national networks in France and Switzerland --
will be ready for service in the fall and winter of 2000, respectively.

Viatel will also own and  operate  metropolitan  networks in London,  Amsterdam,
Paris,  Berlin,  Frankfurt and  Dusseldorf  as well as  throughout  the New York
metropolitan  area. Viatel is able to link its pan-European,  North American and
trans-Atlantic  networks  with  high-speed  local  fiber  networks  to offer its
customers  a wide  array  of  local  and  long-distance  services  over a single
integrated network.

For more information about Viatel and the products and services it offers, visit
WWW.VIATEL.COM.

ABOUT AT&T  COMMUNICATIONS  (UK) LTD.: AT&T Communications (UK) is a world-class
communications  provider  of voice and data  solutions  to retail and  wholesale
customers for  national,  pan-European  and global  requirements.  In 1999,  the
company carried almost 3 billion minutes over its network. The company currently
employs 400 people  with high level  expertise  in  national,  Pan-European  and
global telecommunications services.

ABOUT AT&T: AT&T Corp. (WWW.ATT.COM)  (www.att.com) is among the world's premier
voice and data communications companies, serving more than 80 million customers,
including  consumers,  businesses and  government.  With annual revenues of more
than $53 billion and 151,000  employees,  AT&T  provides  services to  customers
worldwide.

The  company  runs  one of the  world's  largest,  sophisticated  communications
networks and has the largest  digital  wireless  network in North  America.  The
company is a leading  supplier of data and Internet  services for businesses and
offers outsourcing,  consulting and  networking-integration to large businesses.
Internationally,  the AT&T/BT  Global  Venture -- recently named Concert -- will
serve the  communications  needs of  multinational  companies and  international
carriers worldwide.

Certain matters  discussed in this release are  forward-looking  statements that
involve risks and  uncertainties,  including  construction risks and other risks
detailed from time to time in Viatel's registration statements and reports filed
with the Securities and Exchange  Commission,  including  those contained in its
Annual Report or Form 10-K

                                      # # #



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