Document:

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                                                                    EXHIBIT 10.2

                             DATED 11 NOVEMBER 1999

                        WORLDPORT COMMUNICATIONS INC(1)

                                 ENERGIS PLC(2)

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                                   AGREEMENT
                    FOR THE SALE AND PURCHASE OF THE ISSUED
                                SHARE CAPITAL OF
                        WORLDPORT COMMUNICATIONS LIMITED
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DATED: 11 NOVEMBER 1999

PARTIES:

     (1) WORLDPORT COMMUNICATIONS INC. incorporated in the State of Delaware
whose principal executive offices are at 1825 Barrett Lakes Boulevarde, Suite
1000 Kennesaw, Georgia 30144, United States of America ("VENDOR"); and

     (2) ENERGIS PLC with Company number 3438871 whose registered office is at
Carmelite, 50 Victoria Embankment, London EC4Y 0DE ("PURCHASER")

INTRODUCTION

     (A) The Vendor has agreed to dispose of its holding of shares in WorldPort
Communications Limited to the Purchaser on the terms of this agreement.

     (B) Simultaneously with the disposal of the shares in WorldPort
Communications Limited, the Vendor has agreed to dispose to the Purchaser its
85% holding of shares in WorldPort Communications Europe Holding BV and to
dispose of its interest in DMS GSP international gateway switches to UCS, the
U.S. subsidiary of the Purchaser.

OPERATIVE PROVISIONS

     1 DEFINITIONS

     1.1 In this agreement, including the Schedules, the following words and
expressions have the meanings stated, unless they are inconsistent with the
context:

"ADDITIONAL INDEBTEDNESS"    the aggregate of the amounts incurred in accordance
                             with clause 3.5(d) (including accrued interest)
                             between the date of signing of this agreement and
                             Completion

"ASSOCIATE"                  any subsidiary or holding company of WCL, and any
                             other subsidiary of any holding company of WCL,
                             "holding company" having the same meaning as in CA
                             sec. 736 and for this purpose a company is
                             controlled by one or more persons if he or they can
                             exercise more than fifty per cent of the voting
                             rights in it

"ASSUMED DEBT"               the sum of interest bearing liabilities including
                             financial leases excluding the Indebtedness and
                             less cash and cash equivalents as at the Management
                             Accounts Date, being as set out in Schedule 6

"ASSUMED DEBT SCHEDULE"      Schedule 9 of this Agreement providing details of
                             the Assumed Debt

"CA"                         Companies Act 1985

"COMPANIES ACTS"             CA, the former Companies Acts (within the meaning
                             of CA sec. 735(1)) and the Companies Act 1989

"THE COMPANY"                WCL

"COMPLETION"                 completion of the purchase of the Shares in
                             accordance with clause 6

"COMPLETION ACCOUNTS"        the audited balance sheet of WCL as at the
                             Completion Date and the audited profit and loss
                             account of WCL for the period from the Last
                             Accounts Date to Completion prepared on the basis
                             described in clause 7

"COMPLETION BALANCE SHEET"   the balance sheet of WCL prepared from the
                             Completion Accounts in accordance with clause 7 and
                             adjusted in accordance with clause 7

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"COMPLETION DATE"            subject to clause 10.2 of the WCEH Share Agreement,
                             the date five business days after the satisfaction
                             of the conditions set out in clause 3 or if such
                             date falls between 31 December 1999 and 14 January
                             2000, 15 January 2000 or such other date as may be
                             agreed between the parties

"CONSIDERATION"              the Consideration specified in clause 5 as adjusted
                             in accordance with clause 5.4 and clause 7

"DATA ROOM"                  the room located at the premises of WCEH at K.P.
                             van der Mandelelaan 130, 3062 MB Rotterdam, The
                             Netherlands in which documentation in relation to
                             WCL has been made available to the Purchaser for
                             the purpose of its due diligence activities

"DATA ROOM DISCLOSURE LIST"  the list of documents reviewed by the Purchaser in
                             relation to the Data Room in the agreed form as
                             attached to the Disclosure Letter

"ENCUMBRANCE"                includes any mortgage, charge, pledges
                             hypothecation, lien, assignment by way of security,
                             title retention, option, right to acquire, right of
                             pre-emption, right of set off, counterclaim, trust
                             arrangement or other security, preferential right
                             or agreement to confer security, or restriction

"FRS"                        a financial reporting standard issued or adopted by
                             The Accounting Standards Board Limited

"ICTA"                       Income and Corporation Taxes Act 1988

"INTELLECTUAL PROPERTY
RIGHTS"                      means patents, trade marks, service marks, trade
                             names, domain names, registered designs, designs,
                             semiconductor topography rights, database rights,
                             copyrights and other forms of intellectual or
                             industrial property (in each case in any part of
                             the world, whether or not registered or
                             registrable), know-how, inventions, formulae,
                             confidential or secret processes and information,
                             rights in computer software, and any other
                             protected rights and assets, and any licenses and
                             permissions in connection with the foregoing

"INDEBTEDNESS"               the inter-company debts owed by WCL as at 30
                             September 1999 being as set out in Schedule 4

"LAST ACCOUNTS"              the balance sheet, as at the Last Accounts Date,
                             and profit and loss account for the year ended on
                             the Last Accounts Date of WCL in the agreed form as
                             set out in Schedule 8

"LAST ACCOUNTS DATE"         31 December 1998 (being the date to which the Last
                             Accounts were prepared)

"LONGSTOP DATE"              subject to clause 3.7 of the WCEH Share Agreement,
                             31 January 2000 or such other date as may be agreed
                             in writing between the Vendor and the Purchaser

"MANAGEMENT ACCOUNTS"        the unaudited balance sheet and profit and loss
                             accounts for the nine month period ended on and as
                             at the Management Accounts Date for WCL in the
                             agreed form as set out in Schedule 9

"MANAGEMENT ACCOUNTS DATE"   30 September 1999

"MINORITY SHAREHOLDER"       the Shareholder who holds 60 shares of NLG100 each,
                             being 15% of the voting issued share capital of
                             WCEH

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"NET ASSETS"                 the aggregate of the share capital plus reserves
                             (including assigned leases) for WCL

"THE NET ASSETS SCHEDULE"    Schedule 7 of this Agreement providing details of
                             the Net Assets as at the Management Accounts Date

"NET ASSETS STATEMENT"       the statement referred to in clause 7

"PROPERTIES"                 the leasehold properties in the name of WCL, set
                             out in Schedule 3

"PURCHASER'S AUDITORS"       PriceWaterhouseCoopers of 1 Embankment Place,
                             London WC2N 6NN

"SHARES"                     the entire issued share capital of WCL

"TAXATION"                   all forms of taxation, duties and levies whatsoever
                             and whenever imposed, whether by governmental or
                             other authority of the United Kingdom and (without
                             limitation) includes:

                             (a) income tax, corporation tax, capital gains tax,
                                 inheritance tax, stamp duty, value added tax,
                                 customs and other import duties and national
                                 insurance contributions and any payment
                                 whatsoever which WCL may be or become bound to
                                 make to any person as a result of any enactment
                                 relating to taxation and any other taxes,
                                 duties or levies supplementing or replacing any
                                 of the above;

                             (b) all interest, fines and penalties incidental,
                                 or relating, to any such taxation, duties or
                                 levies, whatsoever

"TAX DEED"                   the deed relating to Taxation to be entered into at
                             Completion between (1) the Vendor and (2) the
                             Purchaser in the agreed form

"UK SWITCH AGREEMENT"        the agreement in the agreed form of even date made
                             between the Vendor and WCL for the sale and
                             purchase of a Nortel 250 Switch

"US SWITCH AGREEMENT"        the agreement of even date made between the Vendor
                             and UCS whereby the Vendor agrees to sell its
                             interest in the Switches and the Contracts (each as
                             defined in the US Switch Agreement)

"UCS"                        Unisource Carrier Services USA, Inc.

"VENDOR'S AUDITORS"          Arthur Andersen of Prof. W.H. Keesomlaan 8, 1183 DJ
                             Amstelveen, Postbus 75381, 1070 Amsterdam

"VENDOR'S SOLICITORS"        Rakisons, Clements House, 14/18 Gresham Street,
                             London EC2V 7JE

"WARRANTY CLAIM"             a claim made by the Purchaser for breach of any of
                             the WCL Warranties

"WCEH"                       WorldPort Communications Europe Holding B.V.

"WCEH SHARE AGREEMENT"       the agreement of even date made between the Vendor,
                             WorldPort and the Purchaser whereby the Vendor
                             agrees to sell 85% of the issued share capital of
                             WCEH

"WCL"                        WorldPort Communications Limited

"WCL DISCLOSURE LETTER"      the disclosure letter, of today's date, from the
                             Vendor to the Purchaser

"WCL WARRANTIES"             the warranties of the Vendor in respect of the sale
                             of the Shares set out in Schedule 2 of this
                             agreement

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"WORLDPORT"                  WorldPort International Inc, incorporated in the
                             State of Delaware whose principal executive offices
                             are 1825 Barrett Lakes Boulevard, Suite 100
                             Kennesaw, Georgia 30144, United States of America

"YEAR 2000 COMPLIANT"        neither the performance nor the functionality of
                             the assets when in normal use will be materially
                             impaired by the advent of the Year 2000 and in
                             particular:

                             (a) Year 2000 Compliant shall mean that no value
                                 for current date will cause any interruption or
                                 error in the operation of the assets;

                             (b) all manipulations of time-related data by the
                                 assets will produce the desired results for all
                                 valid date values prior to, through and beyond
                                 the Year 2000;

                             (c) date elements in these products (including
                                 interfaces and data storage) will permit
                                 specifying the century to eliminate date
                                 ambiguity without human intervention including
                                 leap year calculations; and

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

     1.2 Unless it is inconsistent with the context a reference to a statutory
provision includes a reference to:

          (a) any statutory amendment, modification, consolidation or
     re-enactment (whether before or after the date of this agreement);

          (b) any statutory instruments or subordinate legislation or orders
     made pursuant to the statutory provision;

          (c) statutory provisions of which the statutory provision is an
     amendment, modification, consolidation or re-enactment;

          but does not include a substituted provision.

     1.3 A reference to an SSAP is a reference to a statement of standard
accounting practice adopted by The Accounting Standards Board Limited.

     1.4 Words denoting the singular include the plural and vice versa; words
denoting one gender include all genders; words denoting persons include
corporations and vice versa.

     1.5 Unless otherwise stated, a reference to a clause, sub-clause or
Schedule is a reference to a clause or sub-clause of, or Schedule to, this
agreement.

     1.6 Clause headings in this agreement and in the Schedules are for ease of
reference only and do not affect the construction of any provision.

     1.7 References to documents "in the agreed form" are to documents in terms
agreed between the parties and signed (for the purposes of identification only)
by the parties or the Vendor's Solicitors and the Purchaser's Solicitors.

     1.8 References to Dollars ($) in this agreement shall mean U.S. Dollars.

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     2 DELIVERY AT SIGNING

     2.1 Immediately upon signing this Agreement, the Vendor will deliver to the
Purchaser the following:

          (a) a duly executed copy of the US Switch Agreement and the WCEH Share
     Agreement; and

          (b) a legal opinion, in the agreed terms from the Vendor's Solicitors
     in respect of this Agreement; and the Purchaser will enter into, with the
     Minority Shareholder, the agreement referred to in clause 3.1(d).

     2.2 The Vendor confirms to the Purchaser receipt by it of an opinion in the
agreed form from Salomon Smith Barney confirming the fairness of the
Consideration referred to in this Agreement.

     3 CONDITIONS PRECEDENT

     3.1 This agreement shall be subject to the fulfilment at or prior to the
Completion Date of each of the following conditions:

          (a) the transactions contemplated by this Agreement having been
     approved and adopted by the requisite action of the shareholders of
     WorldPort in accordance with the certificate of incorporation and by-laws
     of WorldPort and applicable Delaware law;

          (b) the Vendor having entered into the US Switch Agreement with UCS;

          (c) the Vendor and WorldPort having entered into the WCEH Share
     Agreement with the Purchaser; and

          (d) the Minority Shareholder having, entered into an agreement with
     the Purchaser agreeing to sell to the Purchaser the 15% of the issued share
     capital of WCEH held by it

     and none of the agreements referred to in (b) or (c) or (d) having been
     terminated.

     The Purchaser may, at its discretion, waive any of the above conditions
other than in paragraph (a) above.

     The Vendor shall notify the Purchaser immediately on becoming aware of
anything which will or may prevent any of the conditions in this clause 3.1 from
being satisfied by the Longstop Date.

     3.2 The obligations of the Vendor to complete the transactions contemplated
is subject to the fulfilment of all of the following conditions on or prior to
the Completion Date:

          (a) all obligations of the Purchaser to be performed under this
     agreement through, and including on, the Completion Date shall have been
     performed in all material respects;

          (b) the Purchaser shall have made the deliveries contemplated in
     clause 6.5 hereof; and

          (c) no litigation proceedings having been commenced which is
     reasonably likely to have a material adverse effect on the Vendor's
     anticipated benefits under this Agreement.

     3.3 The obligations of the Purchaser to complete the transactions
contemplated is subject to the fulfilment of all of the following conditions on
or prior to the Completion Date:

          (a) each and every warranty made by the Vendor shall have been true
     and correct in all material respects when made and shall be true and
     correct in all material respects as if originally made on and as of the
     Completion Date except to the extent that such warranties are not true and
     correct in all material respects as a result of:

             (i) except for paragraph 7.3 of Schedule 2, an event or occurrence
        outside the control of the Vendor occurring during the period from the
        execution of this Agreement to the Completion Date;

             (ii) any act or omission of the Purchaser during the period from
        the execution of this Agreement until the Completion Date;

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             (iii) any action taken by WCL in the ordinary course of business
        during the period from the execution of this Agreement until the
        Completion Date;

          (b) all obligations of the Vendor to be performed under this agreement
     through, and including on, the Completion Date shall have been performed in
     all material respects;

          (c) the Vendor and WCL shall have made the deliveries contemplated in
     clause 6.2 hereof; and

          (d) no litigation proceedings having been commenced which is
     reasonably likely to have a material adverse effect on the Purchaser's
     anticipated benefits under this Agreement.

     3.4 The Vendor and the Purchaser shall use reasonable efforts to satisfy or
procure the satisfaction of the conditions set out in this clause 3 as soon as
possible and in any event by the Longstop Date.

     3.5 The Vendor shall ensure that between the date of this agreement and the
Completion Date (both dates inclusive):

          (a) WCL shall carry on its business in the ordinary course;

          (b) WCL shall not declare or pay any dividend;

          (c) WCL shall not enter into any contract or commitment of an unusual
     nature or which is not in the ordinary course of trading or which provides
     for total annual expenditure in excess of $250,000;

          (d) WCL shall not assume or incur or agree to assume or incur any
     capital commitment or any debt, obligation or liability:

             (i) outside the ordinary course of trading; or

             (ii) within the ordinary course of trading in excess of $6 million;

          (e) the Purchaser will be entitled to convene a meeting of employees
     of WCL or their representatives to explain the transactions and any
     proposed plan of the Purchaser insofar as it relates to those employees;
     and

          (f) the Purchaser shall be entitled to nominate such person from time
     to time who shall be entitled to attend as an observer at all board
     meetings of WCL and to receive the same information as is provided to
     directors of WCL.

     For the purposes of this clause 3.5 the Purchaser acknowledges that the
Vendor shall not be under any obligation whatsoever to provide further financing
to WCL from the date of this agreement to the Completion Date and the expression
"ordinary course of trading" shall be construed accordingly.

     3.6 The Purchaser shall have the right, subject to the consent of the
Vendor including as to the terms (such consent not to be unreasonably withheld)
during the period from the date of this agreement until the Completion Date to
require WCL to lease or borrow assets from it (or any Associate of the
Purchaser) on arm's length terms.

     4 AGREEMENT FOR SALE

     4.1 Subject to the terms and conditions of this agreement, the Vendor shall
sell and transfer with full title guarantee and the Purchaser shall purchase the
Shares with all rights attaching to them, with effect from the Completion Date.

     4.2 The Vendor waives any pre-emption rights it may have in relation to any
of the Shares, whether under the articles of association of WCL or otherwise.

     5 PURCHASE CONSIDERATION

     5.1 The consideration for the shares shall (subject to adjustment as
provided in clauses 5.4 and 7) be the sum of $433,700 which shall be paid in
cash at Completion in accordance with the provisions of clause 6.5.

     5.2 On Completion the Purchaser shall procure the repayment of the
Indebtedness.

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     5.3 In acquiring the Shares for the consideration specified in clause 5.1
the Purchaser acknowledges that WCL remains liable for the Assumed Debt.

     5.4 To the extent that any Additional Indebtedness has been incurred and
remains outstanding as at the Completion Date then in such circumstances the sum
to be paid for the Shares in clause 5.1 shall be reduced by that amount on a $
for $ basis and the relevant amount shall be repaid at Completion.

     5.5 Schedule 10 sets out the calculation of the various payments to be made
pursuant to this Agreement.

     5.6 Schedule 11 sets out the calculation of the Consideration payable to
the Vendor pursuant to this Agreement.

     6 COMPLETION

     6.1 Completion shall take place at the offices of the Vendor's Solicitors
on or before the Longstop Date, when the following provisions of this clause
shall apply.

     6.2 The Vendor shall:

          (a) deliver to the Purchaser duly completed and signed transfers in
     favour of the Purchaser of the Shares, together with the relative share
     certificates;

          (b) deliver to the Purchaser the resignation of the auditors of WCL
     confirming that they have no outstanding claims and containing a statement
     under CA s394 (1) that there are no such circumstances as are mentioned in
     that section;

          (c) complete the US Switch Agreement;

          (d) deliver to the Purchaser the duly executed assignments or
     novations of the WCL Contracts in the agreed form and a duly executed
     novation of the US leases to WCL in the agreed form;

          (e) deliver to the Purchaser resignations, in the agreed form, of the
     outgoing directors and secretary as required by the Purchaser;

          (f) deliver to the Purchaser the discharge of the Indebtedness in the
     agreed form; and

          (g) deliver to the Purchaser the duly executed Tax Deed.

     6.3 There shall be delivered or made available to the Purchaser:

          (a) the statutory books, books of account and documents of record of
     WCL and their certificates of incorporation and common seals; and

          (b) all the current cheque books of WCL, together with current
     statements of all its bank accounts with a reconciliation to Completion.

     6.4 A board meeting of WCL shall be held at which:

          (a) such persons as the Purchaser nominates are appointed additional
     directors; and

          (b) the transfer of the Shares referred to in clause 6.2(a) are
     approved (subject to stamping).

     6.5 At Completion the Purchaser shall:

          (a) transfer the following amounts by telegraphic transfer:

             (i) $4,705,600 plus accrued interest through to the Completion
        Date, to the account of WorldPort, being the amounts required to
        discharge the Indebtedness owed by WCL;

             (ii) $433,700 less any accrued interest paid under clause (i), and
        less any amount caused by the reduction pursuant to clause 5.4 being the
        remaining Consideration for the Shares;

          and the amount of the Additional Indebtedness shall be repaid

          (b) complete the WCEH Share Agreement;

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          (c) complete the UK Switch Agreement; and

          (d) deliver to the Vendor the Tax Deed.

     6.6 The Purchaser shall not be obliged to complete this Agreement unless at
the same time the WCEH Share Agreement and the agreement referred to in clause
3.1(d) are completed.

     7 ADJUSTMENTS TO PURCHASE CONSIDERATION

     7.1 The parties shall procure, as soon as practicable and in any event
within 60 days after Completion, the preparation of the Completion Accounts,
which shall be prepared by WCL, subject to this clause 7, on the basis of
accounting standards generally accepted in the UK and audited by WCL's Auditors
to a standard to be agreed between WCL's Auditors and the Purchaser's Auditors.
The cost of the audit shall be paid as to one half by the Vendor and as to the
other half by the Purchaser.

     7.2 The parties shall disclose to WCL's Auditors and the Purchaser's
Auditors all information relevant for the purposes of preparing the Completion
Accounts.

     7.3 The parties shall instruct WCL, the WCL Auditors and the Purchaser's
Auditors to prepare the Net Assets Statement from the Completion Accounts and to
deliver to the Vendor and the Purchaser copies of the Completion Accounts and
Completion Balance Sheet and of their calculation of any adjustments required by
this clause within 14 days of the preparation of the Completion Accounts.

     7.4 The basis of preparing the Completion Balance Sheet is as set out
below:

          (a) except as stated in (c) below in accordance with UK GAAP;

          (b) they are to comprise a balance sheet for WCL in a similar format
     to the Management Accounts in Schedule 9. A statement of Net Assets will be
     aggregated in a similar form to Schedule 7;

          (c) the Completion Accounts shall:

             (i) not treat as an asset any prepayments which will not give rise
        to a benefit to the business of WCL;

             (ii) exclude any deferred tax assets of WCL;

             (iii) exclude depreciation and amortisation charged to the profit
        and loss account from the Management Accounts Date to the date of
        Completion;

             (iv) be prepared to present the balance sheet and statement of
        assets and liabilities on the basis immediately before the following
        specified events which are expected to occur before or at Completion:

                (a) the transfer of the UK Switch pursuant to the UK Switch
           Agreement;

                (b) the repayment of the Indebtedness.

     7.5 It is anticipated that the value of the Net Assets as at Completion
will be a negative figure. To the extent that the value of such Net Assets is:

          (a) a negative figure which is greater than L1,443,000, the Vendor
     will repay to the Purchaser the amount by which this negative figure is
     greater than L1,443,000, and the Consideration shall be reduced by the
     amount of that repayment, provided that the amount of the repayment shall
     not exceed $20,000,000; and

          (b) a negative figure which is less than L1,443,000, the Purchaser
     will pay to the Vendor the amount by which this negative figure is less
     than L1,443,000, and the Consideration shall be increased by the amount of
     that payment, provided that the amount of that payment shall not exceed
     $20,000,000.

     7.6 Each of the parties undertakes to the other to pay the amount of any
reduction or increase (as the case may be) to the other in cash within 28 days
after delivery to the Vendor and the Purchaser of a copy of the calculation
referred to in clause 7.3.
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          Any amount due under clause 7.6 of the WCEH Share Agreement may be
     off-set against any amount due under this clause.

     7.7 Disputes with respect to the Completion Accounts or the Completion
Balance Sheet or the calculation of the Net Assets Statement or any other matter
referred to in this clause 7 shall be referred for final settlement to a firm of
chartered accountants, nominated jointly by the Vendor and the Purchaser, or,
failing nomination within 14 days after request by either the Vendor or the
Purchaser, nominated at the request of either party by the President for the
time being of the Institute of Chartered Accountants of England and Wales. The
firm shall act as experts and not as arbitrators and their decision (in the
absence of manifest error) shall be final and binding on the parties. Their fees
shall be payable by the Vendor and the Purchaser in such proportions as the firm
determines.

     7.8 For the purposes of the Purchaser's review under this clause 7, the
Purchaser's Auditors and the Vendor's Auditors attempts to resolve any dispute
under this clause 7 and the settlement of any dispute by the independent
accountants, the Vendor and the Purchaser shall ensure that the Vendor's
Auditors and the Purchaser's Auditors and (if applicable) the independent
accountants are promptly given all information, assistance and access to all
books of accounts, documents, files and papers which they may reasonably
require.

     7.9 Unless otherwise indicated under this agreement, the translations of
local currency amounts into US Dollars will be made on the basis of the closing
exchange rates on 10 November 1999.

     8 VENDOR COVENANTS

     The Vendor hereby covenants that during the period between the date of this
Agreement and Completion:

          (a) WCL shall comply with the obligations contained in the following
     agreements and shall not do, cause anything to be done, omit or cause
     anything to be omitted which would enable the counterparty to terminate
     such agreements:

             (i) interlease agreements entered into by WCL and certain carriers,
        including Interroute, World Access, Primetec and Global One;

             (ii) co-location agreements entered into by WCL and Telelink and
        Star Europe Ltd;

          (b) WCL shall not assign or agree to assign any trademarks.

     9 WARRANTIES BY THE VENDOR

     9.1 The Vendor warrants to the Purchaser that, save as set out in the WCL
Disclosure Letter, the WCL Warranties are accurate in all material respects and
as at the Completion Date will be accurate in all material respects except to
the extent that such warranties are not accurate in all material respects as at
the Completion Date as a result of:

          (a) except for paragraph 7.3 of Schedule 2, an event or occurrence
     outside the control of the Vendor occurring during the period from the date
     of this Agreement to the Completion Date;

          (b) any act or omission of the Purchaser during the period from the
     date of this Agreement until the Completion Date; and

          (c) any action taken by WCL in the ordinary course of business during
     the period from the date of this Agreement until the Completion Date.

     9.2 The Vendor warrants to the Purchaser that:

          (a) the execution, delivery and performance of this agreement and all
     documents executed or to be executed in connection therewith have been duly
     authorised by all necessary corporate action on behalf of the Vendor. This
     agreement constitutes, and, as of the Completion Date, all documents
     executed or to be executed in connection therewith shall constitute, the
     legal, valid and binding obligation of the Vendor enforceable against it in
     accordance with its terms;

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          (b) other than as stated in this agreement, or in the WCL Disclosure
     Letter there is no pledge, lien or other encumbrance on, over or affecting
     the Shares or the assets of WCL and there is no agreement or arrangement to
     give or create any such encumbrance and no claim has been made by any
     person to be entitled to any of the foregoing; and

          (c) no consent, approval or other actions by any Shareholder of
     WorldPort is required for the consummation of any of the transactions
     contemplated by this Agreement other than the approval required by clause
     3.1(a) of the WCEH Share Agreement.

     9.3 The Vendor shall not be liable in respect of any claim under the WCL
Warranties unless the Purchaser serves written notice of such claim setting out
the nature of the claims and so far as is practicable its estimate of the amount
claimed upon the Vendor by, in respect of claim in relation to Taxation, not
later than the seventh anniversary of Completion and, in respect of all other
claims, by not later than 30 September 2001 provided that the amount payable in
respect of the relevant claim is agreed by the Vendor within 12 months of the
date of such written notice or legal proceedings are instituted in respect of
such claim by the due service of process on the Vendor by the date falling 12
months after the date of such written notice, unless extended by agreement
between the parties.

     9.4 The Vendor shall not be liable in respect of any claim under the WCL
Warranties (except for paragraph 7.3 of Schedule 2) unless the aggregate
liability in respect of that claim (which shall include any claims arising out
of the same cause or event) and all other claims, including claims under the
WCEH Warranties (as defined in the WCEH Share Agreement) (but not including
claims under paragraph 7.3 of Schedule 2 to the WCEH Share Agreement) exceeds
$10,000,000 in which case only the excess shall be recoverable.

     9.5 Clause 9.5 of the WCEH Share Agreement shall apply to this Agreement.

     9.6 The Purchaser shall, in relation to any loss or liability which may
give rise to a claim under this Agreement against the Vendor, discharge its
common law duty to use reasonable endeavours to mitigate the loss suffered by
it.

     9.7 The Vendor shall not be liable in respect of any claim under the WCL
Warranties in respect of any breach or claim:

          (a) to the extent that such breach or claim would not have arisen but
     for some voluntary act, omission, transaction or arrangement, which could
     reasonably have been avoided and which is not required by law, carried out
     after Completion by or on behalf of all or any of the Purchaser or WCL and
     its respective successors in title;

          (b) to the extent that such breach or claim would not have arisen or
     occurred but for the coming into force of any legislation not in force at
     Completion but having retrospective effect or by reason of the withdrawal
     of any extra statutory concession applying at Completion or a change in the
     application of any extra statutory concession applying at Completion, in
     each case having retrospective effect;

          (c) to the extent that WCL recovers against any loss or damage
     suffered arising out of such breach or claim under the terms of any
     insurance policy for the time being in force;

          (d) to the extent that such breach or claim arises as a result of any
     change in the accounting bases or policies in accordance with which WCL
     values its assets or calculates its liabilities or any other change in
     accounting practice on or after Completion.

     9.8 If the Vendor pays or is due to pay to the Purchaser an amount in
respect of any claim under the WCL Warranties and the Purchaser recovers from a
third party any amount in respect of the matter giving rise to that claim, the
Purchaser shall (or shall procure that WCL shall) forthwith repay to or reduce
the amount due from the Vendor the sum which represents or would represent a
double recovery under such claim less all costs, charges and expenses including
Taxation reasonably incurred by the Purchaser in recovering that sum from the
third party and any applicable taxation suffered by the Purchaser in respect of
that recovery.

                                       11
<PAGE>   12

     9.9 If any claim is received by the Purchaser or WCL from a third party in
respect of which the Vendor may be or become liable under the WCL Warranties,
the Purchaser shall procure that WCL shall:

          (a) as soon as reasonably practicable give written notice thereof to
     the Vendor or (with a copy to the Vendor's Solicitors) specifying the
     nature of the claim in reasonable detail;

          (b) not make any admission of liability, agreement or compromise to or
     with any person in relation thereto without the prior written consent of
     the Vendor or (such consent not to be unreasonably withheld or delayed),
     provided always that no such prior consent in writing shall be required in
     circumstances where, in the reasonable opinion of the Purchaser, failure to
     admit liability or to compromise or settle such claim shall be materially
     prejudicial to the goodwill or reputation of WCL or the Purchaser;

          (c) give the Vendor and its professional advisers reasonable access on
     reasonable notice to the premises and personnel of WCL and to any relevant
     documents and records within the possession or control of the Purchaser or
     WCL for the purpose of enabling the Vendor to consider the merits of such
     claim and to take copies thereof (at the expense of the Vendor); and

          (d) take such action as the Vendor may reasonably request to avoid,
     dispute, resist, appeal or compromise such claim, subject to the Purchaser
     and WCL being indemnified to their reasonable satisfaction against all
     losses, liabilities, costs and expenses which they may suffer or incur by
     reason of such action including, for the avoidance of doubt, the amount of
     any third party claim.

     9.10 Where under the provisions of the Taxation statutes or otherwise the
Purchaser and/or WCL is entitled (whether by right of indemnity, reimbursement
or any other means) to recover from some other person (not being the Purchaser
or WCL but including, without limitation any Taxation authority) any sum or
benefit in respect of any matter giving rise or which may give rise to a claim
against the Vendor under the WCL Warranties, the Purchaser shall (and shall
procure that WCL shall) as soon as reasonably practicable notify the Vendor in
writing of such entitlement and at the request of the Vendor and subject to
being indemnified and secured to their reasonable satisfaction against all
losses, liabilities, costs and expenses which they may suffer or incur thereby
take all appropriate and reasonable steps to enforce recovery at the sole cost
of the Vendor including without limitation the issuance of proceedings in the
name of WCL.

     9.11 Any payment by the Vendor pursuant to the WCL Warranties shall be
treated for all purposes by the parties as a reduction in the Consideration.

     9.12 The Purchaser shall only be entitled to recover once for the same loss
in respect of two or more breaches of the WCL Warranties for claims relating to
the same subject matter.

     9.13 Where qualified by the knowledge, information, belief or awareness of
the Vendor, each Warranty is deemed to include such knowledge, information,
belief or awareness held, without enquiry in respect of the relevant subject
matter of such Warranty, by the following senior management individuals:

          Carl Grivner (Chief Executive Officer WorldPort), John Hanson (Chief
     Financial Officer WorldPort), Stephen Courter (managing director, Europe),
     David Hickey (managing director, corporate development: EnerTel NV), Peter
     Veenman (vice-president director: EnerTel NV), Malcolm Arnold
     (vice-president operations, Europe), Jeroen Bulk (chief financial officer:
     EnerTel NV) and David Whitefoot (employed by WCL)

     9.14 The Purchaser acknowledges that, in connection with the WCL
Warranties, it has had the opportunity to review all of the documentation as set
out in the Data Room Disclosure List and that the documentation referred to in
the Data Room Disclosure List shall be treated as having been fully disclosed to
it for the purposes of disclosure against the WCL Warranties.

     9.15 The Purchaser confirms and agrees that as at the date hereof neither
the Purchaser nor any director or officer of the Purchaser is aware of any fact,
matter or circumstance which constitutes or is reasonably likely to constitute a
breach of the WCL Warranties and to the extent that the Purchaser or any such
director or officer is so aware no claim may be made under the WCL Warranties in
respect of such facts, matter or circumstance.

                                       12
<PAGE>   13

     9.16 Each of the parties acknowledges that in agreeing to enter into this
agreement it has not relied on any representation, warranty, undertaking or
other assurance except those set out or referred to in this agreement. Without
prejudice to the foregoing, the Purchaser acknowledges that it has not relied on
any representations or warranties or other information contained in the
information on the Vendor and the Company prepared by Salomon Smith Barney or in
any other written or oral information supplied by or on behalf of the Vendor or
its advisers or made or supplied in connection with the negotiations of the sale
and purchase under this agreement except those set out or referred to in this
Agreement.

     9.17 The limitations on liability contained in clause 9.4 and referred to
in clause 9.5 shall not apply to any claims made for breach of any WCL Warranty
relating to Taxation or the Tax Deed. This clause 9 shall be subject to clause
10.2 of the WCEH Share Agreement.

     10 ASSIGNMENT AND SUCCESSIONS

     Except as expressly provided above, none of the rights of the parties under
this agreement or the WCL Warranties may be assigned or transferred except as
referred to in clause 11 of the WCEH Share Agreement.

     11 TERMINATION

     This agreement and the transactions contemplated hereby may be terminated
at any time prior to the Completion Date by prompt notice given in accordance
with clause 16:

          (a) by the mutual written consent of the Purchaser and the Vendor; or

          (b) by the Vendor if:

             (i) there has been a material breach by the Purchaser of any
        representation or warranty contained in this agreement; or

             (ii) there has been a material breach of any of the covenants or
        agreements set forth in this agreement on the part of the Purchaser, and
        which breach is not cured within 30 days after written notice of such
        breach is given by the Vendor to the Purchaser.

          (c) by the Purchaser if:

             (i) there has been a material breach by the Vendor of any
        representation or warranty contained in this agreement; or

             (ii) there has been a material breach of any of the covenants or
        agreements set forth in this agreement on the part of the Vendor, which
        breach is not cured within 30 days after written notice of such breach
        is given by the Purchaser to the Vendor;

          (d) by either the Purchaser or the Vendor if the Completion shall not
     have occurred at or before 11:59pm on the Longstop Date; provided, however,
     that the right to terminate this agreement under this clause 11(d) shall
     not be available to any party whose breach of a representation or warranty
     or failure to fulfil any material obligation under this agreement has been
     the cause of or resulted in the failure of the Completion to occur on or
     prior to the aforesaid date.

     12 ANNOUNCEMENTS

     12.1 No announcement shall be made in respect of the subject matter of this
agreement, except as specifically agreed between the parties, unless an
announcement is required by law or is requested to be made to the Stock
Exchange, Nasdaq National Market or the Securities Exchange Commission and the
party making such an announcement shall, where possible, discuss the content of
the announcement with the other side.

     12.2 If this agreement ceases to have effect, the Purchaser will release
and return to WCL all documents concerning it provided to the Purchaser or its
advisers in connection with this agreement and will not use or make available to
another person information which it or its advisers have been given in respect
of WCL and which is not in the public domain.

                                       13
<PAGE>   14

     13 INFORMATION

     The Vendor shall procure that, prior to Completion, the Purchaser, its
agents, representatives, Auditors and solicitors are given promptly on request
all such facilities and information regarding the business, assets, liabilities,
contracts and affairs of WCL, and of the documents of title and other evidence
of ownership of its assets, as the Purchaser reasonably requires.

     14 COSTS

     All expenses incurred by or on behalf of the parties, including all fees of
agents, representatives, solicitors, auditors and actuaries employed by any of
them in connection with the negotiation, preparation or execution of this
agreement, shall be borne solely by the party who incurred the liability, and
WCL shall not have any liability in respect of them.

     15 TIME OF ESSENCE

     Time shall be of the essence of this agreement, both as regards the dates
and periods specifically mentioned and as to any dates and periods which, by
agreement in writing between or on behalf of the Vendor and the Purchaser, are
substituted for them.

     16 COMMUNICATIONS

     16.1 All communications between the parties with respect to this agreement
shall:

          (a) be delivered by hand, or sent by post to the above address (in the
     case of a notice to the Vendor, marked for the attention of John Hanson);
     or

          (b) be sent by facsimile transmission to the facsimile transmission
     numbers stated below or as notified for the purpose of this clause.

     16.2 Communications shall be deemed to have been received as follows:

          (a) if sent by post -- 3 business days after posting;

          (b) if delivered by hand -- on the day of delivery, if delivered at
     least 2 hours before the close of business hours on a business day, and
     otherwise on the next business day;

          (c) if sent by facsimile transmission -- at the time of transmission,
     if received at least 2 hours before the close of business hours on a
     business day, and otherwise on the next business day.

     16.3 For this purpose, a "business day" means a day on which the clearing
banks in the City of London are open for business and "business hours" mean
between the hours of 09.00 and 18.00 inclusively local time.

     16.4 The facsimile transmission numbers referred to in clause 16.1 are:

          (a) for the Vendor -- 001 847 913 0037 (attention John Hanson);

          (b) for the Purchaser -- 020 7206 5454 (attention Chris Hibbert). The
     Vendor hereby appoints Rakisons of 14/18 Gresham Street, London EC2V 7JE,
     England, marked for the personal attention of Michael Thompson as its
     authorised agent for the purpose of accepting service of process for all
     purposes in connection with this Agreement.

     17 CONFIDENTIALITY

          None of the parties shall issue any press release or publish any
     circular to shareholders or any other public document or make any public
     statement or otherwise disclose to any person who is not a party (including
     (without limitation) any document or statement published, issued or made by
     the Vendor and/or the Purchaser to any supplier to or customer of WCL), in
     each case relating to or connected with or arising out of this agreement or
     the matters contained in it, without obtaining the previous approval of the
     other party to its contents and the manner of its presentation and
     publication or disclosure (such approval not to be unreasonably withheld),
     unless required by any applicable law.

                                       14
<PAGE>   15

     18 INVALIDITY

          If a term in or provision of this agreement is held to be illegal or
     unenforceable, in whole or in part, under an enactment or rule of law, it
     shall to that extent be deemed not to form part of this agreement and the
     enforceability of the remainder of this agreement shall not be affected.

     19 COUNTERPARTS

     This agreement may be executed in any number of separate counterparts, each
of which when executed and delivered shall be an original, but all the
counterparts shall together constitute one and the same instrument.

     20 PROPER LAW

     The construction, validity and performance of this agreement shall be
governed by the laws of England and the parties submit to the non-exclusive
jurisdiction of the English Courts.

     Executed by the parties.

                                       15
<PAGE>   16

                                    ANNEX I
                                   SCHEDULE 2

                                   WARRANTIES

     1 LAST ACCOUNTS

     1.1.1 The Last Accounts were prepared in accordance with the historical
cost convention; and the bases and policies of accounting, adopted for the
purpose of preparing them, are the same as those adopted in preparing the
audited accounts of WCL in respect of accounting periods since incorporation.

     1.1.2 The Last Accounts:

          (a) give a true and fair view of the assets and liabilities of WCL at
     the Last Accounts Date and its profits for the financial period ended on
     that date;

          (b) comply with the requirements of the Companies Acts;

          (c) comply with the current FRSs applicable to United Kingdom
     companies;

          (d) are not affected by extraordinary, exceptional or non-recurring
     items, or changes in accounting policies or bases;

          (e) fully provide or reserve for or disclose all material liabilities
     and capital commitments of WCL outstanding at the Last Accounts Date,
     including contingent, unquantified or disputed liabilities.

     1.2 VALUATION OF STOCK-IN-TRADE AND WORK IN PROGRESS

     In the Last Accounts and in the accounts of WCL for the three preceding
financial years stock in trade and work in progress have been treated in
accordance with SSAP 9.

     1.3 DEPRECIATION OF FIXED ASSETS

     In the Last Accounts and in the accounts of WCL for the three preceding
financial years, fixed assets have been depreciated in accordance with SSAP 12.

     1.4 DEFERRED TAXATION

     Where provision for deferred taxation is not made in the Last Accounts,
details of the amounts of deferred taxation are disclosed in the WCL Disclosure
Letter.

     1.5 ACCOUNTING REFERENCE DATE

     The accounting reference date of WCL for the purposes of CA sec. 224 is 31
December.

     1.6 BOOKS AND RECORDS

     All the accounts, books, ledgers, financial and other records, of WCL:

          (a) are in its possession; and

          (b) do not contain material inaccuracies; and

          (c) have been maintained in accordance with all applicable laws and
     are in the possession or control of the Vendor.

     1.7 MANAGEMENT ACCOUNTS

     In relation to the Management Accounts:

          (a) the assets and liabilities of WCL and the Management Accounts Date
     and their results for the nine month period ended on that date have not
     been materially mis-stated and the Vendor does not consider such accounts
     to be misleading;

                                       16
<PAGE>   17

          (b) the Management Accounts were prepared on a consistent basis to the
     bases and policies of accounting adopted in preparing the Last Accounts;
     and such accounts contains details of; and

          (c) such accounts contains details of:

             (i) profits, losses and liabilities;

             (ii) provisions; and

             (iii) share capital and reserves, of WCL.

     1.8 ASSUMED DEBT

     The Assumed Debt amounts referred to in Schedule 9 are correct as the
Management Accounts Date.

     1.9 Since the Last Accounts Date there has been no material adverse change
in the financial or trading position of WCL.

     2 CORPORATE MATTERS

     2.1 DIRECTORS AND SHADOW DIRECTORS

     2.1.1 The only directors of WCL are the persons whose names are listed in
relation to WCL in Schedule 1.

     2.1.2 No person is a shadow director (within the meaning of CA sec. 741) of
WCL.

     2.2 SUBSIDIARY, ASSOCIATIONS AND BRANCHES

     2.2.1 WCL is not the holder or owner nor has it any interest or agreed to
acquire share or loan capital of a company (whether incorporated in the United
Kingdom or elsewhere).

     2.2.2 WCL has no branch, agency or place of business, or a permanent
establishment outside the United Kingdom.

     2.3 OPTIONS OVER WCL'S CAPITAL

     Except as required by this agreement, there are no agreements or
arrangements in force which provide for the issue, allotment or transfer of, or
grant to any person the right to call for the issue, allotment or transfer of,
share or loan capital of WCL held by the Vendor.

     2.4 THE SHARES

     2.4.1 None of the Shares was issued at a discount.

     2.4.2 No share or loan capital has been issued or allotted, or agreed to be
issued or allotted, by WCL since the Last Accounts Date.

     2.4.3 The Shares constitute the whole of the issued and allotted share
capital of WCL.

     2.4.4 The Vendor will be entitled to transfer the full legal and beneficial
ownership of the Shares to the Purchaser on the terms of this agreement without
the consent of a third party.

     2.4.5 Save as set out in the WCL Disclosure Letter, there is no pledge,
lien or other encumbrance on, over or affecting the Shares and there is no
agreement or arrangement to give or create any such encumbrance.

     2.4.6 WCL was properly incorporated under the laws of the jurisdiction
under which it was incorporated.

     3 TAXATION

     3.1 WCL has duly made all returns and given or delivered all notices,
accounts and information which ought to have been made to and is not involved in
any dispute with the Inland Revenue or other authority concerning any matter
likely to affect in any way the liability (whether accrued, contingent or
future) of it to Taxation of any nature whatsoever or other sums imposed,
charged, assessed, levied or payable under the provisions of the Taxation
statutes.

                                       17
<PAGE>   18

     3.2 WCL has duly paid or fully provided for all Taxation for which it is
liable and so far as the Vendor is aware there are no circumstances in which
interest or penalties in respect of Taxation not duly paid could be charged
against it in respect of any period prior to Completion.

     3.3 No liability of WCL to Taxation has arisen or so far as the Vendor is
aware will arise up to Completion save for corporation tax payable in respect of
normal trading profits earned by it or other tax and insurance contributions for
which it is accountable to the Inland Revenue, Customs and Excise or other
relevant authority and which has where appropriate been deducted or charged and
where due paid to the Inland Revenue or such other relevant authority.

     3.4 WCL has not entered into or been a party to any schemes or arrangements
designed partly or wholly for the purposes of WCL or (so far as the Directors
are aware) any other person avoiding Taxation.

     3.5 All documents in the possession of WCL and which attract stamp or
transfer duty in the United Kingdom or elsewhere have been properly stamped.

     3.6 All payroll Taxation deduction systems have been properly operated and
the required records have been kept by WCL.

     3.7 WCL has duly accounted for value added tax, and properly maintained all
records in relation to value added tax.

     3.8 So far as the Vendor is aware WCL is not liable to be assessed or to
have any Taxation collected from it nor is it accountable for any Taxation in
respect of any transactions, events, profits, income of gains or deemed profits,
income or gains of any third party.

     3.9 So far as the Vendor is aware WCL has not carried out or been engaged
in any transaction or arrangement such that there may be substituted for the
actual consideration given or received by WCL any different consideration for
any Taxation purpose.

     4 FINANCE

     4.1 CAPITAL COMMITMENTS

     There were no commitments on capital account outstanding at the Last
Accounts Date and, since the Last Accounts Date, WCL has not made or agreed to
make any capital expenditure, or incurred or agreed to incur capital commitments
or disposed of or realised capital assets or an interest in capital assets.

     4.2 DIVIDENDS AND DISTRIBUTIONS

     Since the Last Accounts Date no dividend or other distribution (as defined
in ICTA Part VI Chapter II as extended by ICTA sec. 418) has been, or is treated
as having been, declared, made or paid by WCL.

     4.3 BANK AND OTHER BORROWINGS

     Details of all limits on WCL's bank overdraft facilities are set out in the
WCL Disclosure Letter.

     4.4 BANK ACCOUNTS

     4.4.1 Statements of the bank accounts of WCL, and of the credit or debit
balances as at a date not more than seven days before the date of this
agreement, have been supplied to the Purchaser.

     4.4.2 Since the date of each statement, there have been no payments out of
the account to which the statement relates, except for payments in the ordinary
course of business; and the balances on current accounts are not substantially
different from the balances shown in the statements.

     4.5 CREDITORS

     There is no amount owing by WCL to a creditor which has been due for more
than 3 months.

                                       18
<PAGE>   19

     5 TRADING

     5.1 CHANGES SINCE LAST ACCOUNTS DATE

     Since the Last Accounts Date:

          (a) the business of WCL has been continued in the normal course;

          (b) WCL has paid its creditors in accordance with their respective
     credit terms.

     5.2 VENDOR'S OTHER INTERESTS AND LIABILITIES TO WCL

     There is no outstanding indebtedness of the Vendor to WCL.

     5.3 EFFECT OF SALE OF SHARES

     5.3.1 The Vendor has no knowledge, information or belief that after
Completion:

          (a) a major supplier of WCL will cease supplying it; or

          (b) a major customer of WCL will cease to deal with it.

     5.3.2 So far as the Vendor is aware compliance with the terms of this
agreement does not:

          (a) conflict with, or result in the breach of, or constitute a default
     under an agreement or arrangement to which WCL is a party where such
     agreement or arrangement has an annual value of WCL of $250,000 or more;

          (b) result in the creation, imposition, crystallisation or enforcement
     of an encumbrance on assets of WCL;

          (c) result in present or future indebtedness of WCL becoming due and
     payable, or capable of being declared due and payable, prior to its stated
     maturity.

     5.4 JOINT VENTURES AND PARTNERSHIP

     5.4.1 WCL is and has not agreed to become, a participant in or member of a
joint venture, consortium, partnership or other unincorporated association.

     5.4.2 WCL is not and has not agreed to become, a party to an agreement or
arrangement for sharing commissions.

     5.5 LITIGATION, DISPUTES AND WINDING UP

     5.5.1 WCL is not engaged in litigation or arbitration proceedings, as
claimant or defendant and there are no proceedings pending or threatened, either
by or against WCL.

     5.5.2 So far as the Vendor is aware there is no dispute with a revenue or
other official department in the United Kingdom or elsewhere in relation to the
affairs of WCL, and so far as the Vendor is aware there is nothing which may
give rise to a dispute.

     5.5.3 So far as the Vendor is aware there are no claims pending or
threatened against WCL, by an employee or third party in respect of an accident
or injury, which are not covered by insurance.

     5.5.4 So far as the Vendor is aware no order has been made, or petition
presented, or resolution passed for the winding up of WCL; no distress,
execution or other process has been levied in respect of WCL which remains
undischarged; and so far as the Vendor is aware there is no unfulfilled or
unsatisfied judgment or court order outstanding against WCL.

     5.5.5 WCL has not stopped payment nor is it insolvent or unable to pay its
debts within the meaning of Insolvency Act 1986 sec. 123 (but omitting any
requirement to prove anything to the satisfaction of the court).

     5.6  BUSINESS NAMES

     WCL does not use a name for any purpose other than its full corporate name.

                                       19
<PAGE>   20

     5.7 POWERS OF ATTORNEY AND AUTHORITY

     5.7.1 No power of attorney given by WCL is in force.

     5.7.2 No express authorities by which another person may enter into a
contract or commitment to do anything on behalf of WCL are outstanding.

     5.8 LICENCES AND CONSENTS

     WCL has obtained all necessary licences and consents for the proper
carrying on of its business and all the licences and consents are valid and
subsisting and so far as the Vendor is aware WCL is not in breach of any of the
licences or consents; and there is nothing that might prejudice their
continuation or renewal.

     5.9 SUBSISTING CONTRACTS

     5.9.1 The WCL Disclosure Letter contains particulars of all existing
material contracts (being those contracts having a value to WCL of more than
$250,000 annually), to which WCL is a party.

     5.9.2 WCL is not a party to a contract, transaction, arrangement (where
such an arrangement has a value to WCL of more than $250,000 annually) which:

          (a) is of an unusual or abnormal nature, or outside the ordinary and
     proper course of business;

          (b) is for a fixed term of more than twelve months;

          (c) cannot be terminated by it, in accordance with its terms, on three
     months' notice or less;

          (d) involves, or is likely to involve, the supply of goods the
     aggregate sales value of which will represent in excess of 10 per cent of
     its turnover for the preceding financial year.

     5.10 DEFAULTS UNDER AGREEMENTS WCL

     WCL is not:

          (a) in default under an agreement or arrangement to which it is a
     party, or in respect of another obligation or restriction by which it is
     bound;

          (b) liable in respect of an express warranty on its part.

     5.11 PURCHASES AND SALES FROM OR TO ONE PARTY

     Not more than 10 per cent of the aggregate amount of all the purchases, and
not more than 10 per cent of the aggregate amount of all the sales, of WCL is
obtained, or made, from or to the same supplier or customer, (including a person
connected with the supplier or customer).

     6 EMPLOYMENT

     6.1 EMPLOYEES AND TERMS OF EMPLOYMENT

          (a) Particulars of the identities, dates of commencement of employment
     and terms of employment of all the employees and officers of WCL, including
     profit sharing, commission or discretionary bonus arrangements, are
     contained in the WCL Disclosure Letter.

          (b) There are no agreements or arrangements between WCL and a trade
     union or other body representing employees.

     6.2 BONUS SCHEMES

     There are no schemes in operation entitling an employee of WCL to a
commission or remuneration calculated by reference to the whole or part of the
turnover, profits or sales of WCL.

                                       20
<PAGE>   21

     6.3 CHANGES IN REMUNERATION

     During the period to which the Last Accounts relate and since the Last
Accounts Date or (where employment or holding of office commenced after the
beginning of the period) since the commencing date of the employment or holding
of office:

          (a) no change has been made in the rate of remuneration, emoluments or
     pension benefits, of an officer, ex-officer or senior executive of WCL (a
     senior executive being a person in receipt of remuneration in excess of
     $125,000 per annum);

          (b) no material change has been made in any other terms of employment
     of an officer or senior executive.

     6.4 TERMINATION OF CONTRACTS OF EMPLOYMENT

     6.4.1 All contracts of employment to which WCL is a party are terminable at
any time on three months' notice or less without compensation (other than
compensation in accordance with the Employment Rights Act 1996).

     6.4.2 No executive of WCL, who is in receipt of remuneration in excess of
$125,000 per annum, and no officer of WCL has given or received notice
terminating his employment, except as expressly contemplated in this agreement,
or will be entitled to give notice as a result of this agreement.

     7 ASSETS

     7.1 OWNERSHIP OF ASSETS

     Except for assets subject to hire purchase or lease arrangements, all
assets were owned by WCL at the Last Accounts Date, and WCL had good title to
all the assets included in the Last Accounts and (except for current assets
subsequently sold or realised in the ordinary course of business) still owns and
has good title to them and to all assets acquired since the Last Accounts Date
and so far as the Vendor is aware none of the assets are subject to or affected
by any option, right to acquire, mortgage, charged, pledge, lien or agreement
for payment on the deferred terms, judgment or other security or Encumbrance
whatsoever.

     7.2 INSURANCE/Y2K

     7.2.1 All the material assets and undertakings of WCL of an insurable
nature are insured in amounts representing their full replacement or
reinstatement value against fire and other risks normally insured against by
persons carrying on the same business as that carried on by it.

     7.2.2 So far as the Vendor is aware WCL is, and has for the last three
years been, adequately covered against accident, damage, injury, third party
loss (including product liability), loss of profits and other risks normally
insured against by persons carrying on the same kind of business.

     7.2.3 So far as the Vendor is aware all insurance is in full force, and
nothing has been done or omitted to be done which could make any policy of
insurance void or voidable.

     7.3 All major critical equipment of or used by, and all services provided
by, WCL are Year 2000 Compliant.

     7.4 So far as the Vendor is aware all material assets of WCL will be
operating functionally immediately before Completion.

     8 PROPERTY

     8.1 LEASEHOLD PROPERTIES

     8.1.1 WCL has paid the rent and observed and performed the covenants on the
part of the tenant and the conditions contained in any leases (which expressions
in this clause 8 includes underleases) under which the Properties are held, and
the last demand for rent (or receipt, if issued) was unqualified, and all the
leases are valid and in full force.

                                       21
<PAGE>   22

     8.1.2 The licences, consents and approvals required from the landlords and
any superior landlords under the leases of the Properties have been obtained,
and the covenants on the part of the tenant contained in the licences, consents
and approvals have been duly performed.

     8.1.3 There are no rent reviews in progress under the leases of the
Properties held by WCL.

     8.1.4 No obligation necessary to comply with a notice given by or other
requirement of the landlord under a lease of any of the Properties is
outstanding or unperformed.

     8.1.5 There is no obligation to reinstate any of the Properties by removing
or dismantling an alteration made to it by WCL or a predecessor in title.

     8.1.6 WCL does not have any interest in real estate save as stated in
Schedule 3.

     8.1.7 So far as the Vendor is aware the present use of the Properties does
not conflict with any material contractual obligations and so far as the Vendor
is aware no material building or alteration work has been carried out without
the required licences.

     8.1.8 So far as the Vendor is aware no municipal, provincial or
governmental or other authority has given any written instruction to WCL in
connection with pollution of soil (including sub-soil and water therein) which
is currently owned or used by WCL.

     8.1.9 So far as the Vendor is aware WCL currently holds, and is
substantially in compliance with all conditions of all, permits necessary to
operate its business.

     9 PENSIONS

     WCL has and has had no obligation to provide and has not provided any life
assurance, retirement, pension, death, health or disability benefit to any
present or former director or employee of WCL or any spouse or dependent of any
such person.

     10 INTELLECTUAL PROPERTY RIGHTS

     10.1 So far as the Vendor is aware all the material Intellectual Property
Rights used or required by WCL for its business and the running of their
networks are valid, enforceable, in full force and effect, registered (so far as
is capable of registration) in the sole name of WCL, not subject to renewal or
re-registration within two years of the date hereof, are each in the sole and
exclusive legal and beneficial ownership of WCL without the requirement for any
licence, consent or permission from or payment to any person, are each
individually transferable by WCL free from any Encumbrance of any kind and there
are no defects in WCL's title to any of them.

     10.2 So far as the Vendor is aware WCL has not granted any licences or
assignments under or in respect of any Intellectual Property Rights or disclosed
or provided to any person (other than employee under enforceable obligations of
confidence) any confidential or secret material in which any Intellectual
Property Right exists, including without limitation, know-how, trade secrets,
technical assistance, confidential information or lists of customers or
suppliers and is not obliged so to grant or disclose any of the same.

     10.3 So far as the Vendor is aware WCL is entitled to carry on its business
in the ordinary and usual course as at present carried on and does not thereby
infringe any Intellectual Property Rights of any third party nor is it liable to
pay any commission, royalty or like fee or obtain any consent or licence.

     10.4 So far as the Vendor is aware all fees for the grant or renewal of the
Intellectual Property Rights owned or used by WCL have been paid promptly and no
circumstances exist which might lead to the cancellation, forfeiture or
modification of any Intellectual Property Rights owned or used by WCL or to the
termination of or any claim for damages under any licence of Intellectual
Property Rights to WCL.

                                       22
<PAGE>   23

     11 SPECIFIC INFORMATION REQUESTS

          To the best of the knowledge of the Vendor none of the information in
     the documents listed in the Data Room Documents List and in the Schedule of
     Disclosed Documents (as defined in the WCL Disclosure Letter) is inaccurate
     or misleading in any material respect.

                                          ATTESTATIONS

                                          SIGNED for and on behalf of

                                          WORLDPORT COMMUNICATIONS INC

                                          /s/ Carl Grivner
                                          --------------------------------------
                                          Carl Grivner

                                          SIGNED for and on behalf of

                                          ENERGIS PLC

                                          /s/ Francis Michael Wilkinson
                                          --------------------------------------
                                          Francis Michael Wilkinson

                                       23<PAGE>   1

                                                                    EXHIBIT 10.3

                                NEW YORK SWITCH

                             DATED 11 NOVEMBER 1999

                        WORLDPORT COMMUNICATIONS INC.(1)

                      UNISOURCE CARRIER SERVICE USA, INC.

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

                                   AGREEMENT
                        FOR THE SALE AND PURCHASE OF THE
                   DMS GSP US INTERNATIONAL GATEWAY SWITCHES

             ------------------------------------------------------
<PAGE>   2

DATE 11 NOVEMBER 1999

PARTIES

     (1) WORLDPORT COMMUNICATIONS INC, incorporated in the State of Delaware
whose principal executive offices are at 1825 Barrett Lakes Boulevarde, Suite
1000 Kennesaw, Georgia 30144, United States of America ("VENDOR"); and

     (2) Unisource Carrier Service USA, Inc. a corporation incorporated in
Delaware ("PURCHASER")

INTRODUCTION

     (A) The Vendor has agreed to dispose of its interest in the DMS GSP US
international gateway switch together with the benefit of certain contracts to
the Purchaser on the terms of this agreement.

     (B) Simultaneously with the disposal of the DMS GSP US international
gateway switch, together with the benefit of certain contracts, the Vendor has
agreed to sell to the Purchaser's ultimate holding company, Energis plc, the
Vendor's holding of shares in WorldPort Communications Europe Holding BV.

OPERATIVE PROVISIONS

     1 INTERPRETATION

     1.1 In this Agreement (including the Introduction and the Schedules),
except where a different interpretation is necessary in the context, the
following words and expressions shall have the following meanings:

"ASSETS"                     the Contracts and the US Switch;

"COMPLETION"                 completion of this Agreement pursuant to the terms
                             of clause 4;

"COMPLETION"                 DATE" the date five business days after the
                             satisfaction of the conditions set out in clause 2
                             or such other date as may be agreed between the
                             parties;

"COMPLETION NET ASSETS
  STATEMENT"                 the statements showing the Net Assets as at
                             Completion as prepared and adjusted in accordance
                             with clause 10 of this Agreement

"CONSIDERATION"              the consideration payable in accordance with clause
                             4 as adjusted in accordance with clause 10;

"CONTRACTS"                  the agreements referred to in the Schedule 1 to
                             this Agreement;

"ENCUMBRANCES"               any option, right to acquire, mortgage, charge,
                             pledge, liens or agreement for payment on deferred
                             terms, retention of title, judgment or other
                             security, encumbrance or equity whatsoever

"ENERGIS PLC"                Energis plc whose registered office is at
                             Carmelite, 50 Victoria Embankment, London, EC4Y
                             OPE;

"GLOBAL CROSSING AGREEMENT"  the Global Crossing Agreement in the agreed form;

"INTELLECTUAL PROPERTY
RIGHTS"                      patents, trade marks, service marks, trade names,
                             domain names, registered designs, designs,
                             semiconductor topography rights, database rights,
                             copyrights and other forms of intellectual or
                             industrial property (in each case in any part of
                             the world, whether or not registered or
                             registrable), know-how, inventions, formulae,
                             confidential or secret processes and information,
                             rights in computer software, and any other
                             protected rights and assets, and any licenses and
                             permissions in connection with the foregoing

                                       2
<PAGE>   3

"NET ASSETS"                 the net book value of the Assets less the net
                             present value of lease obligations relating to the
                             Assets

"NET ASSETS SCHEDULE"        Schedule 5 setting out the Net Assets relating to
                             the US Switch

"PURCHASER'S AUDITORS"       PriceWaterhouseCoopers of 1 Embankment Place,
                             London WC2N 6NN

"US GAAP"                    United States Generally Accepted Accounting
                             Principles

"UK SWITCH AGREEMENT"        the agreement in the agreed form of even date made
                             between the Vendor and WCL for the sale and
                             purchase of a Nortel 250 Switch

"US SWITCH"                  the DMS GSP US international gateway switch leased
                             by the Vendor located at 111 8th Street, New York
                             City, New York, USA with 728 ports and an
                             approximate capacity of 164 million minutes per
                             month, further details of which are set out in
                             Schedule 2 to this Agreement

"VENDOR'S AUDITORS"          the auditors of the Vendor from time to time

"VENDOR'S SOLICITORS"        Rakisons, Clements House, 14/18 Gresham Street,
                             London EC2V 7JE

"WCEH"                       WorldPort Communications Europe Holding B.V. having
                             its statutory seat in Rotterdam The Hague

"WCEH SHARE AGREEMENT"       the agreement in the agreed form of even date made
                             between WorldPort, the Vendor and Energis plc
                             whereby WorldPort agrees to sell 85% of the issued
                             share capital of WCEH

"WCL"                        WorldPort Communications Limited

"WCL SHARE AGREEMENT"        the agreement in the agreed form of even date made
                             between the Vendor and Energis plc whereby the
                             Vendor agrees to sell the entire issued share
                             capital of WCL

"WORLDPORT"                  WorldPort International Inc, incorporated in the
                             State of Delaware whose principal executive offices
                             are 1825 Barrett Lakes Boulevard, Suite 1000
                             Kennesaw, Georgia 30144, United States of America

"YEAR 2000 COMPLIANT"        neither the performance nor the functionality of
                             assets when in normal use will be materially
                             impaired by the advent of the Year 2000 and in
                             particular:

                             (a) Year 2000 Compliant shall mean that no value
                                 for current date will cause any interruption or
                                 error in the option of the assets;

                             (b) all manipulations of time-related data by the
                                 assets will produce the desired results for all
                                 valid date values prior to, through and beyond
                                 the Year 2000;

                             (c) date elements in these products (including
                                 interfaces and data storage) will permit
                                 specifying the century to eliminate date
                                 ambiguity without human intervention including
                                 leap year calculations; and

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

     1.2 References to the parties or clauses or Schedules are references to the
parties and clauses of or Schedules to this Agreement.

                                       3
<PAGE>   4

     1.3 Headings to clauses are for information only and shall not form part of
the operative provisions of this Agreement.

     2 CONDITIONS PRECEDENT

     2.1 This agreement shall be subject to the fulfilment at or prior to the
Completion Date of each of the following conditions (unless waived by each of
the parties):

          (a) this agreement and the other transactions contemplated shall have
     been approved and adopted by the requisite vote of the shareholders of the
     Vendor; and

          (b) the completion of the WCEH Share Agreement with the Purchaser.

     2.2 The obligations of the Purchaser to complete the transactions
contemplated is subject to the fulfilment of all of the following conditions on
or prior to the Completion Date:

          (a) each and every warranty made by the Vendor shall have been true
     and correct in all material respects when made and shall be true and
     correct in all material respects as if originally made on and as at the
     Completion Date except to the extent that such warranties are not true and
     correct in all material respects as a result of:

             (i) an event or occurrence outside the control of the Vendor
        occurring during the period from the execution of this Agreement until
        the Completion Date;

             (ii) any act or omission of the Purchaser during the period from
        the execution of this Agreement until the Completion Date; and

             (iii) any action taken by the Vendor in the ordinary cause of
        duress during the period from the execution of this Agreement until the
        Completion Date; and

          (b) the Vendor shall have executed or procured on terms reasonably
     satisfactory to the Purchaser an agreement in writing granting to the
     Purchaser access to the US Switch.

     3 SALE AND PURCHASE OF THE ASSETS

     3.1 The Vendor shall sell with full title guarantee and the Purchaser shall
purchase all rights, title and interest of the Vendor in and to the Assets
subject only to the terms of and the obligations under the Contracts and
otherwise free and clear of Encumbrances.

     3.2 Risk in the US Switch shall pass to the Purchaser with effect from the
close of business on the Completion Date.

     4 CONSIDERATION PAYABLE BY THE PURCHASER

     4.1 The total purchase consideration payable by the Purchaser to acquire
the Assets shall be US$1,990,000 (subject to adjustment as provided in clause
10).

     4.2 All sums payable by the Purchaser in respect of the Consideration shall
be paid in cash at Completion.

     4.3 Schedule 3 sets out the calculation of the various payments to be made
pursuant to this Agreement.

     4.4 Schedule 4 sets out the calculation of the Consideration to the Vendor
pursuant to this Agreement.

     4.5 Schedule 5 sets out a statement of net assets in relation to this
Agreement.

     5 COMPLETION

     5.1 Completion of the sale and purchase of the Assets shall take place on
the Completion Date at the offices of the Vendor's Solicitors or at such other
place as may be mutually agreed.

     5.2 Upon and after Completion the Vendor shall (subject to the terms of
this Agreement) do and execute all other necessary acts, deeds, documents and
things within its power effectively to vest the Assets in

                                       4
<PAGE>   5

the Purchaser and, pending the doing and executing of such acts, deeds,
documents and things the Vendor shall hold the legal estate in such Assets in
trust for the Purchaser.

     6 THE CONTRACTS

     6.1 With effect from the Completion Date the Purchaser shall be entitled to
all the benefits of the Vendor under, and will perform all the obligations and
liabilities arising under the Contracts.

     6.2 The Vendor and the Purchaser shall prior to Completion each negotiate
in good faith with the counterparty to each of the Contracts for the novation of
each of the Contracts for nil consideration and on terms whereby the Purchaser
undertakes to perform each Contract and to be bound by all the terms thereof as
if the Purchaser was as from the Completion Date party thereto in lieu of the
Vendor and whereby each Contractor releases and discharges the Vendor from all
claims and demands whatsoever in respect thereof arising after the Completion
Date and whereby the Contractors accept the liability of the Purchaser in lieu
of the liability of the Vendor in every way as if the Purchaser was named
therein as party thereto in place of the Vendor as from the Completion Date.

     6.3 If a counterparty does not agree to enter into a novation agreement in
respect of a Contract, the Vendor and the Purchaser shall, prior to Completion,
each enter into such documentation as shall be required to assign the benefit
(subject to the burden) of those of the Contracts for which a deed of novation
is not entered into, by virtue of which the Purchaser undertakes to perform such
Contracts and to be bound by all the terms thereof with effect from the
Completion Date.

     6.4 In any case where the consent of a counterparty is required to the
assignment from the Vendor to the Purchaser of any Contract, and such consent
has not been duly obtained, the assignment of that Contract shall be conditional
upon such consent and, pending the grant of such consent, the Vendor shall hold
its rights under the relevant Contract on trust for the Purchaser.

     6.5 Whether or not any novation agreement is entered into, the Vendor shall
indemnify the Purchaser on a full indemnity basis from and against all costs,
claims, proceedings and demands (whether in contract or in tort or otherwise)
arising in respect of any period before the Completion Date in connection with
the Assets.

     6.6 Subject to clause 6.4, whether or not any novation agreement is entered
into, the Purchaser shall indemnify the Vendor on a full indemnity basis from
and against all costs, claims, proceedings and demands (whether in contract or
in tort or otherwise) arising in respect of any period after the Completion Date
in connection with the Assets.

     7 WARRANTIES

     7.1 The Vendor warrants to the Purchaser as follows:

          (a)(i) that the Purchaser shall acquire the Assets free from all
     Encumbrances, subject only to the Contracts;

             (ii) that the US Switch as of the Completion Date complies with all
        material statutory requirements and regulations relating to its
        operation;

             (iii) so far as the Vendor is aware use of the US Switch by or on
        behalf of the Purchaser will not infringe the Intellectual Property
        Rights of any third party;

             (iv) the US Switch is Year 2000 Compliant; and

             (v) the Contracts are true, complete and accurate in all material
        respects and are in full force and effect and that no written notice of
        termination or alleging breach has been received by the Vendor;

                                       5
<PAGE>   6

          (b) that discussions have taken place with Forsythe McArthur
     Associates, Inc ("FMA") and Comdisco, pursuant to which FMA and Comdisco
     have indicated to the Vendor that they will consider the sale and/or lease
     of the US Switch to interested parties and the novation of relevant
     Contracts under mutually agreeable terms and conditions.

     8 ANNOUNCEMENTS

     8.1 No announcement of any kind shall be made in respect of the subject
matter of this Agreement except as specifically agreed between the Vendor and
the Purchaser or as required by law.

     8.2 Notwithstanding clause 8.1, the Vendor and the Purchaser shall procure
as soon as practicable after Completion that appropriate notices are given to
each Contractor of the assignment or proposed novation of each relevant Contract
by the Vendor to the Purchaser.

     9 GENERAL PROVISIONS

     9.1 Either party may at its absolute discretion in whole or in part
release, compound or compromise, or grant time or indulgence to the other party
for any liability under this Agreement without affecting its rights against the
other party under the same or any other liability.

     9.2 No party shall, prior to Completion, divulge to any third party (other
than their respective professional advisers) the fact that this Agreement has
been entered into or any information regarding its terms or any matters
contemplated by this transaction or make any announcement relating to it without
the prior written consent of the other party.

     9.3 The express or implied waiver by any party of any of its rights under
this Agreement shall constitute neither a continuing waiver of the right waived
nor a waiver of any other right under this Agreement.

     9.4 Nothing in this Agreement shall constitute or be deemed to constitute a
partnership between the parties.

     9.5 This Agreement is personal to the parties and shall not be capable of
assignment without the prior written consent of the other party (such consent
not to be unreasonably withheld).

     9.6 If any provision of this Agreement is held to be invalid or
unenforceable, then such provision shall (so far as it is invalid or
unenforceable) be given no effect and shall be deemed not to be included in this
Agreement but without invalidating any of the remaining provisions of this
Agreement.

     9.7 Any notices must be in writing and may be given to either party at its
registered office or to such other address as may have been notified to the
other parties and will be effectively served:

          (a) on the day of receipt where any hand-delivered letter, telex or
     telefax message is received on a business day before or during normal
     working hours;

          (b) on the following business day, where any hand-delivered letter,
     telex or telefax message is received either on a business day after normal
     working hours or on any other day; or

          (c) on the second business day following the day of posting from
     within the United Kingdom of any letter sent by post office inland first
     class mail postage prepaid.

     9.8 This Agreement is governed by and is to be construed in accordance with
English law.

     9 ADJUSTMENTS TO PURCHASE CONSIDERATION

     9.1 The parties shall procure, as soon as practicable and in any event
within 60 days after Completion, the preparation of the Completion Net Assets
Statement, which shall be prepared by the Vendor's Auditors, subject to this
clause 10, on the basis of accounting standards generally accepted in the United
States and audited by the Vendor's Auditors to a standard to be agreed between
the Vendor's Auditors and the Purchaser's Auditors. The cost of the audit shall
be paid as to one half by the Vendor and as to the other half by the Purchaser.

                                       6
<PAGE>   7

     9.2 The parties shall disclose to Vendor's Auditors and the Purchaser's
Auditors all information relevant for the purposes of preparing the Completion
Net Assets Statement.

     9.3 The parties shall instruct the Vendor's Auditors and the Purchaser's
Auditors to prepare the Completion Net Assets Statement and to deliver to the
Vendor and the Purchaser copies of the Completion Net Assets Statement and of
their calculation of any adjustments required by this clause within 14 days of
the preparation of the Completion Net Assets Statement.

     9.4 If:

          (a) the value of Net Assets is less than $130,000, the Consideration
     shall be reduced by the amount of the shortfall provided that the amount of
     the repayment shall not exceed $20,000,000; and

          (b) the value of the Net Assets is more than $130,000 the Purchaser
     shall pay to the Vendor in cash a sum equal to the amount of that excess
     provided that the amount of this payment shall not exceed $20,000,000.

     9.5 Each of the parties undertakes to the other to pay the amount of any
reduction or increase (as the case may be) to the other in cash within 28 days
after delivery to the Vendor and the Purchaser of a copy of the calculation
referred to in clause 10.3.

     9.6 Any amount due under the WCL Share Agreement, the WCEH Share Agreement
and the Global Crossing Agreement may be off-set against any amount due under
this clause.

     9.7 Disputes with respect to the calculation of the Completion Net Assets
Statement or any other matter referred to in this clause 10 shall be referred
for final settlement to a firm of chartered accountants, nominated jointly by
the Vendor and the Purchaser, or, failing nomination within 14 days after
request by either the Vendor or the Purchaser, nominated at the request of
either party by the President for the time being of the US Accountants
Institute. The firm shall act as experts and not as arbitrators and their
decision (in the absence of manifest error) shall be final and binding on the
parties. Their fees shall be payable by the Vendor and the Purchaser in such
proportions as the firm determines.

     9.8 For the purposes of the Purchaser's review under this clause 10, the
Purchaser's Auditors and the Vendor's Auditors attempts to resolve any dispute
under this clause 10 and the settlement of any dispute by the independent
accountants, the Vendor and the Purchaser shall ensure that the Vendor's
Auditors and the Purchaser's Auditors and (if applicable) the independent
accountants are promptly given all information, assistance and access to all
books of accounts, documents, files and papers which they may reasonably
require.

     9.9 Unless otherwise indicated under this agreement, the translations of
local currency amounts into US Dollars will be made on the basis of the closing
exchange rates on 10 November 1999.

     10 APPORTIONMENT OF BUSINESS RESPONSIBILITY

     10.1 All costs and other outgoings in connection with the Assets and any
revenue from or in respect of the Assets shall be apportioned on a time basis so
that the relevant costs, outgoings and revenue attributable to the period ended
on the Completion Date shall be borne by the Vendor and the relevant charge,
income or payment attributable to the period commencing on the day following the
Completion Date shall be received by the Purchaser.

     10.2 Prepayments and payments in advance (if any) made to the Vendor on or
before the Completion Date in respect of goods and/or services to be supplied
under the Contracts after the Completion Date shall be payable by the Vendor to
the Purchaser (and until payment shall be held on trust for the Purchaser).
Prepayments and payments in advance made by the Vendor in respect of goods
ordered but not delivered and for services contracted for but not rendered,
under the Contracts prior to the Completion Date shall be reimbursed by the
Purchaser.

     10.3 Payments (if any) made to the Vendor after the Completion Date in
respect of services supplied under the Contracts on or before the Completion
Date shall be retained by the Vendor, and if any such sum is received by the
Purchaser, the Purchaser shall pay that sum to the Vendor (and until payment
shall hold the

                                       7
<PAGE>   8

sum in question on trust for the Vendor). Payments (if any) made to the Vendor
in respect of services supplied after the Completion Date shall be paid by the
Vendor to the Purchaser (and until payment the Vendor shall hold the sum on
trust for the Purchaser).

     IN WITNESS WHEREOF this Agreement has been executed as a Deed the day and
year first above written

                                          ATTESTATIONS

                                          SIGNED for and on behalf of
                                          WORLDPORT COMMUNICATIONS INC

                                          /s/ Carl Grivner
                                          --------------------------------------
                                          Carl Grivner

                                          SIGNED for and on behalf of
                                          UNISOURCE CARRIER SERVICE USA, INC.

                                          /s/ Francis Michael Wilkinson
                                          --------------------------------------
                                          Francis Michael Wilkinson

                                       8

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