WHITE MOUNTAINS INSURANCE GROUP LTD
8-K, EX-99.A, 2000-09-25
FIRE, MARINE & CASUALTY INSURANCE
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<PAGE>

                                                                  EXECUTION COPY




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




                            STOCK PURCHASE AGREEMENT

                                      AMONG

                   CGU INTERNATIONAL HOLDINGS LUXEMBOURG S.A.,

                                CGU HOLDINGS LLC,

                                    CGNU PLC,

                     WHITE MOUNTAINS INSURANCE GROUP, LTD.,

                               TACK HOLDING CORP.

                                       AND

                             TACK ACQUISITION CORP.

                         DATED AS OF SEPTEMBER 24, 2000




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<PAGE>

                                TABLE OF CONTENTS

<TABLE>
<CAPTION>
                                    ARTICLE I

                                   DEFINITIONS

<S>                                                                                                              <C>
SECTION 1.1.               Definitions............................................................................1

                                   ARTICLE II

                             PURCHASE OF THE SHARES

SECTION 2.1.               Purchase and Sale......................................................................8
SECTION 2.2.               Closing................................................................................9
SECTION 2.3.               Closing Deliveries.....................................................................9
SECTION 2.4.               Purchase Price Determination...........................................................9
SECTION 2.5.               Preclosing Transactions Tax Adjustments................................................9

                                   ARTICLE III

                         REPRESENTATIONS AND WARRANTIES

SECTION 3.1.               Representations and Warranties of CGNU
                           and Sellers...........................................................................11
                           (a)      Organization, Standing and Corporate Power...................................11
                           (b)      Capital Structure............................................................12
                           (c)      Subsidiaries.................................................................13
                           (d)      Authority....................................................................13
                           (e)      Noncontravention; Consents...................................................13
                           (f)      GAAP Financial Statements....................................................14
                           (g)      SAP Financial Statements.....................................................15
                           (h)      No Undisclosed Liabilities...................................................15
                           (i)      Absence of Certain Changes or Events.........................................16
                           (j)      Benefit Plans................................................................16
                           (k)      Taxes........................................................................18
                           (l)      Compliance with Applicable Laws..............................................21
                           (m)      Litigation...................................................................21
                           (n)      Reserves.....................................................................22
                           (o)      Contracts....................................................................22
                           (p)      Insurance Regulatory Matters.................................................23
                           (q)      Brokers......................................................................23
                           (r)      Purchase Not for Distribution................................................23
                           (s)      Financial Risk Management Instruments........................................23
                           (t)      Corporate Records............................................................24
                           (u)      Company Investment Assets....................................................24
                           (v)      Reinsurance..................................................................24
                           (w)      Transactions with Affiliates.................................................24
                           (x)      Owned Real Estate............................................................25
SECTION 3.2.               Representations and Warranties of Buyer
                           and Newco.............................................................................25
                           (a)      Organization, Standing and Corporate Power...................................25
                           (b)      Authority; Noncontravention..................................................25
                           (c)      Capital Structure............................................................27
                           (d)      Subsidiaries.................................................................27
                           (e)      SEC Documents; GAAP Financial Statements.....................................28


                                      -i-
<PAGE>

                           (f)      SAP Financial Statements.....................................................28
                           (g)      No Undisclosed Liabilities...................................................29
                           (h)      Absence of Certain Changes or Events.........................................29
                           (i)      Benefit Plans................................................................29
                           (j)      Commitments..................................................................30
                           (k)      Compliance with Applicable Laws..............................................31
                           (l)      Insurance Regulatory Matters.................................................31
                           (m)      Purchase Not for Distribution................................................31
                           (n)      Litigation...................................................................31
                           (o)      Brokers......................................................................32
                           (p)      Corporate Records............................................................32
                           (q)      Voting Requirements..........................................................32

                                   ARTICLE IV

                                    COVENANTS

SECTION 4.1.               Conduct of Business...................................................................32
SECTION 4.2.               Access to Information; Confidentiality................................................36
SECTION 4.3.               Commercially Reasonable Efforts.......................................................36
SECTION 4.4.               Consents, Approvals and Filings.......................................................37
SECTION 4.5.               Certain Notices.......................................................................38
SECTION 4.6.               Public Announcements..................................................................38
SECTION 4.7.               Certain Canadian Subsidiaries.........................................................38
SECTION 4.8.               Life Insurance Operations.............................................................38
SECTION 4.9.               Certain Intercompany Agreements and Accounts..........................................39
SECTION 4.10.              Use of Names..........................................................................39
SECTION 4.11.              Post-Closing Cooperation..............................................................40
SECTION 4.12.              Further Assurances....................................................................40
SECTION 4.13.              Noncompetition........................................................................40
SECTION 4.14.              Buyer Guaranty........................................................................41
SECTION 4.15.              Restructuring Transactions............................................................41


                                    ARTICLE V

                                EMPLOYEE MATTERS

SECTION 5.1.               Severance Benefits....................................................................44
SECTION 5.2.               Certain Contracts.....................................................................44
SECTION 5.3.               Credit for Service....................................................................44
SECTION 5.4.               Employee Benefit Plans................................................................44
SECTION 5.5.               Preexisting Conditions, Exclusions and Waiting
                           Periods; Deductibles..................................................................45
SECTION 5.6.               COBRA.................................................................................45
SECTION 5.7.               Filings and Records...................................................................45

                                   ARTICLE VI

                              CONDITIONS PRECEDENT

SECTION 6.1.               Conditions to Each Party's Obligations................................................46
                           (a)      No Injunctions or Restraints.................................................46
                           (b)      HSR Act......................................................................46
SECTION 6.2.               Conditions to Obligations of Buyer, Holdco
                           and Newco.............................................................................46
                           (a)      Representations and Warranties...............................................46


                                      -ii-
<PAGE>

                           (b)      Performance of Obligations of Each Seller....................................47
                           (c)      Preclosing Transactions......................................................47
                           (d)      Material Adverse Effect......................................................47
                           (e)      FIRPTA Certificate...........................................................47
                           (f)      Financing....................................................................47
                           (g)      Governmental Consents........................................................47
SECTION 6.3.               Conditions to Obligations of Each Seller..............................................48
                           (a)      Representations and Warranties...............................................48
                           (b)      Performance of Obligations of Buyer, Holdco and
                                    Newco........................................................................48
                           (c)      Governmental Consents........................................................48

                                   ARTICLE VII

                   SURVIVAL OF REPRESENTATIONS AND WARRANTIES

SECTION 7.1.               Survival of Representations and Warranties............................................49

                                  ARTICLE VIII

                                 INDEMNIFICATION

SECTION 8.1.               Obligation to Indemnify...............................................................49
SECTION 8.2.               Indemnification Procedures............................................................51
SECTION 8.3.               Termination; Insurance................................................................53
Section 8.4.               Tax Indemnification...................................................................54

                                   ARTICLE IX

                                   TAX MATTERS

SECTION 9.1.               Indemnity.............................................................................54
SECTION 9.2.               Returns and Payments..................................................................55
SECTION 9.3.               Tax Benefits..........................................................................56
SECTION 9.4.               Tax Refunds...........................................................................57
SECTION 9.5.               Contests..............................................................................57
SECTION 9.6.               Time of Payment.......................................................................59
SECTION 9.7.               Cooperation and Exchange of Information...............................................59
SECTION 9.8.               Conveyance Taxes......................................................................60
SECTION 9.9.               Miscellaneous.........................................................................60

                                    ARTICLE X

                          TERMINATION PRIOR TO CLOSING

SECTION 10.1.              Termination of Agreement..............................................................61
SECTION 10.2.              Survival..............................................................................62

                                   ARTICLE XI

                               GENERAL PROVISIONS

SECTION 11.1.              Fees and Expenses.....................................................................62
SECTION 11.2.              Notices...............................................................................62
SECTION 11.3.              Interpretation........................................................................64
SECTION 11.4.              Entire Agreement; No Other Representations; Third-
                           Party Beneficiaries...................................................................65
SECTION 11.5.              Governing Law.........................................................................65


                                      -iii-
<PAGE>

SECTION 11.6.              Assignment............................................................................65
SECTION 11.7.              Dispute Resolution; Enforcement.......................................................66
SECTION 11.8.              Severability; Amendment; Waiver.......................................................66
SECTION 11.9.              Counterparts..........................................................................67
</TABLE>

                                      -iv-
<PAGE>

                                    EXHIBITS

Exhibit A                Form of Pilot Sale Agreement
Exhibit B                Form of CGUIMCL Sale Agreement
Exhibit C                Form of Life Subs Sale Agreement
Exhibit D                Form of SocGen Sale Agreement
Exhibit E                Form of Munich Re Sale Agreement
Exhibit F                Form of License Agreement
Exhibit G                Form of Term Sheet for Holdco Note


                                      -v-
<PAGE>

                            STOCK PURCHASE AGREEMENT



                  STOCK PURCHASE AGREEMENT, dated as of September 24, 2000 (this
"Agreement"), among CGU International Holdings Luxembourg S.A., a Luxembourg
corporation ("CGUIHL"), CGU Holdings LLC, a Delaware limited liability company
("CGULLC"), CGNU plc, a company incorporated under the laws of England and Wales
("CGNU"), White Mountains Insurance Group, Ltd., a company existing under the
laws of Bermuda ("Buyer"), TACK Holding Corp., a Delaware corporation
("Holdco"), and TACK Acquisition Corp., a Delaware corporation ("Newco").

                  WHEREAS, CGUIHL and CGULLC (collectively, "Sellers") are the
owners of all the Shares (as defined below) of CGU Corporation, a Delaware
corporation (the "Company"); and

                  WHEREAS, Sellers desire to sell to Newco, and Newco desires to
purchase from Sellers, the Shares, on the terms and subject to the conditions
set forth herein.

                  NOW, THEREFORE, in consideration of the representations,
warranties, covenants and agreements contained in this Agreement, the parties
agree as follows:


                                    ARTICLE I

                                   DEFINITIONS

                  SECTION 1.1. DEFINITIONS. For purposes of this Agreement, the
following terms shall have the respective meanings set forth below:

                  "Actual Sale Proceeds" means an amount equal to (a) the sum of
         (i) the cash amount received by the Company upon sale of Pilot
         Insurance Company as contemplated by Section 4.7(a), the Life Subs as
         contemplated by Section 4.8 and the Societe Generale shares as
         contemplated by Section 4.9(b), (ii) the cash amount received by the
         Insurance Subsidiaries upon the sale of the Munich Re shares as
         contemplated by Section 4.9(c) and (iii) the cash amount received by
         CGU Asset Management Inc. upon the sale of CGU Investment Management
         Canada Limited as contemplated by Section 4.7(b) LESS (b) Taxes
         (whether positive or negative) on such amounts as calculated pursuant
         to Section 2.5 hereof and Section 1.1(d) of the Disclosure Schedule.

                  "affiliate" of any person means another person that directly
         or indirectly, through one or more intermediaries,


<PAGE>

         controls, is controlled by, or is under common control with, such first
         person.

                  "Available Foreign Tax Credits" shall mean the amount of
         foreign tax credits of the Company Consolidated Tax Group that exist as
         of the date of the sale of Pilot pursuant to Section 4.7(a) determined
         without taking into account the effect thereon of the Restructuring
         Transactions and any other actions (including, but not limited to,
         other transactions, elections or deductions) requested, taken or caused
         to be taken by Buyer.

                  "Business Day" means any day other than (i) a Saturday, (ii) a
         Sunday, (iii) any other day on which commercial banks are not generally
         open for business in New York or London or (iv) for purposes of
         Sections 2.2 and 10.1(b) only, any other day on which commercial banks
         are not generally open for business in any of Amsterdam, Bermuda,
         Luxembourg or Toronto.

                  "Buyer Employee Benefit Plan" means each Employee Benefit Plan
         that is in effect as of the date hereof, covers at least one employee
         of Buyer or any Subsidiary of Buyer and is maintained by Buyer or any
         Subsidiary of Buyer or to which Buyer or any Subsidiary of Buyer makes
         contributions.

                  "Buyer Insurance Subsidiaries" means the entities listed under
         the heading "Insurance Subsidiaries" in Section 4.15 of the Disclosure
         Schedule.

                  "COBRA" means Part 6 of Subtitle B of Title I of ERISA and
         Section 4980B of the Code.

                  "Code" means the Internal Revenue Code of 1986, as
         amended.

                  "Common Stock" means the common stock, par value $1.00 per
         share, of the Company.

                  "Company Consolidated Tax Group" means the U.S.
         consolidated tax group of which the Company is the common
         parent.

                  "Company Employee Benefit Plan" means each Employee Benefit
         Plan that is in effect as of the date hereof, covers at least one
         Employee and is maintained by the Company or any Subsidiary of the
         Company or to which the Company or any Subsidiary of the Company makes
         contributions.

                  "Confidentiality Agreement" means the letter agreement dated
         April 7, 2000, between Buyer and CGNU plc (formerly CGU plc).


                                      -2-

<PAGE>

                  "Disclosure Schedule" means the Disclosure Schedule (including
         any attachments thereto) delivered in connection with, and constituting
         a part of, this Agreement.

                  "Employee" shall mean each individual who immediately prior to
         the Closing is actively employed by the Company or any Subsidiary of
         the Company.

                  "Employee Benefit Plan" shall mean each "employee benefit
         plan" (as defined in Section 3(3) of ERISA), bonus, deferred
         compensation, equity- or non-equity based, severance or other plan,
         program, arrangement or agreement relating to employment, compensation
         or benefits.

                  "Exchange Act" means the U.S. Securities Exchange Act of
         1934, as amended.

                  "ERISA" means the Employee Retirement Income Security Act
         of 1974, as amended.

                  "Holdco Note" means a promissory note of Holdco having the
         terms set forth in the term sheet attached as Exhibit G.

                  "Insurance Subsidiaries" means American Central Insurance
         Company, American Employers' Insurance Company, CGU Insurance Company,
         CGU Insurance Company of Illinois, CGU Insurance Company of New Jersey,
         CGU Insurance Company of New York, Commercial Union Insurance Company,
         Commercial Union Midwest Insurance Company, Commercial Union York
         Insurance Company, CU Homeland Insurance Company, CU Lloyd's of Texas,
         The Employers' Fire Insurance Company, Farmers and Merchants Insurance
         Company, GA Insurance Company of New York, General Accident Insurance
         Company, General Accident Reinsurance Company of America, General
         Assurance Company, Hawkeye-Security Insurance Company, Houston General
         Insurance Company, Houston General Lloyds, Midwestern Insurance
         Company, National Farmers Union Property and Casualty Company, National
         Farmers Union Standard Insurance Company, The Northern Assurance
         Company of America, North Pacific Insurance Company, Oregon Automobile
         Insurance Company, Potomac Insurance Company, Potomac Insurance
         Company of Illinois, Traders & General Insurance Company, Traders &
         Pacific Insurance Company,  Tri-State Insurance Company and United
         Security Insurance Company.

                  "Knowledge" means the actual knowledge after reasonable
         inquiry of (a) with respect to Sellers, those persons listed in Section
         1.1(b) of the Disclosure Schedule and (b) with respect to Buyer, those
         persons listed in Section 1.1(c) of the Disclosure Schedule.


                                      -3-
<PAGE>

                  "Life Subs" means each of CGU Life Insurance Company of
         America, CGU Life Insurance Company of New York and CGU Annuity
         Service Corporation.

                  "Material Adverse Effect" with respect to any person means a
         material adverse effect on (a) the business, financial condition or
         results of operations of such person and its Subsidiaries, taken as a
         whole, or (b) the ability of such person to perform its obligations
         under this Agreement, other than in either case any such effect
         resulting from (i) changes in general economic or securities or
         financial market conditions (including changes in interest rates), (ii)
         any occurrence or condition generally affecting any segment of the
         property and casualty insurance or reinsurance industry in which such
         person or any of its Subsidiaries participates (including natural
         catastrophe events and any change or proposed change in law or
         regulations in any jurisdiction) and not principally relating to such
         person and its Subsidiaries, (iii) any adverse development of or
         increase in reserves for losses and loss adjustment expenses of such
         person or any of its Subsidiaries, (iv) any increase in the reserve for
         uncollectible reinsurance, or any write-off of reinsurance recoverable
         assets as uncollectible, of such person or any of its Subsidiaries, (v)
         any write-off of assets or establishment of liabilities identified in
         Section 1.1(a) of the Disclosure Schedule, (vi) any downgrade or
         potential downgrade of the financial strength, claims-paying ability,
         insurance, debt or other rating of such person or any of its
         Subsidiaries or (vii) any occurrence or condition arising out of the
         transactions contemplated by this Agreement or the public announcement
         thereof (including any occurrence or condition arising out of the
         identity of or facts relating to Buyer) (the matters described in the
         foregoing clauses (i) through (vii) collectively, the "Excluded
         Causes").

                  "person" means an individual, corporation, partnership, joint
         venture, association, trust, unincorporated organization or other
         entity.

                  "Preclosing Transactions" means the sale of Pilot Insurance
         Company and the Transferred Subs as contemplated by Section 4.15(a),
         the sale of Pilot Insurance Company and CGU Investment Management
         Canada Limited as contemplated by Section 4.7, the sale of the Life
         Subs as contemplated by Section 4.8, the sale of shares of Societe
         Generale and Munich Re contemplated by Sections 4.9(b) and 4.9(c) and
         the repayment of a portion of the outstanding principal amount of the
         Term Note with the proceeds received from the sale of Pilot as
         contemplated by Section 4.7, the Life Subs and the Societe Generale
         shares.

                  "Reference Sale Proceeds" means $856,600,000.


                                      -4-
<PAGE>

                  "Sales Proceeds Variance" means the amount (whether positive
         or negative) equal to Actual Sale Proceeds less Reference Sale
         Proceeds.

                  "Securities Act" means the U.S. Securities Act of 1933, as
         amended.

                  "Subsidiary" of any person means another person at least 50%
         of the total combined voting power of all classes of capital stock or
         other voting interests of which, or at least 50% of the equity
         securities of which, is owned directly or indirectly by such first
         person; PROVIDED, that Pilot Insurance Company, CGU Investment
         Management Canada Limited, CGU Life Insurance Company of America, CGU
         Life Insurance Company of New York and CGU Annuity Service Corporation
         (collectively, the "Excluded Subsidiaries") shall be deemed not to be
         Subsidiaries of the Company for purposes of this Agreement, other than
         as such term is used in Section 3.1(f) hereof, and that Convenient
         Property and Casualty Group, Inc. ("Convenient") and Customized
         Services Administrators, Incorporated shall not be considered
         Subsidiaries of the Company for any purpose, other than as such term is
         used in the definition of "Material Adverse Effect" and, with respect
         to Convenient, as such term is used in Section 4.1.

                  "Term Note" means the term note dated December 31, 1998 issued
         by the Company as issuer pursuant to a Credit Agreement dated December
         31, 1998 and held as of the date hereof by CGULLC.

                  "Transferred Employee" shall mean any Employee who immediately
following the Closing (i) remains employed by the Company or any Subsidiary of
the Company or (ii) becomes an employee of Buyer or any affiliate of Buyer.

                  The following terms shall have the respective meanings set
forth in the Section or other provision of this Agreement indicated below:

<TABLE>
<CAPTION>

TERM                                               SECTION
----                                               -------
<S>                                              <C>
Additional Financing                             4.16(a)
Agreement                                        Introductory paragraph
Base Financial Statements                        3.1(f)
Buyer                                            Introductory paragraph
Buyer Common Stock                               3.2(c)
Buyer Financing                                  3.2(j)
Buyer SAP Statements                             3.2(g)
Buyer SEC Documents                              3.2(e)
CGNU                                             Introductory paragraph


                                      -5-
<PAGE>

CGUIHL                                           Introductory paragraph
CGUIHL Shares                                    2.1
CGULLC                                           Introductory paragraph
CGULLC Shares                                    2.1
Closing                                          2.2
Closing Date                                     2.2
Company                                          Recitals
Company Investment Assets                        3.1(a)
Company SAP Statements                           3.1(g)
Competitor                                       4.13(a)
Contest                                          9.5(b)
Contest Expenses                                 9.1(a)
Contracts                                        3.1(o)
Conveyance Taxes                                 9.8
Current Treaties                                 3.1(v)
Filed Buyer SEC Documents                        3.2(g)
Financings                                       3.2(j)
Former Life Sub Employees                        5.4(b)
GAAP                                             3.1(f)
GAAP December Balance Sheet                      3.1(f)
Governmental Entity                              3.1(e)
HSR Act                                          3.1(e)
Indemnification Basket                           8.1(a)
Indemnification Cap                              8.1(a)
Indemnified Party                                8.2(a)
Indemnifying Party                               8.2(a)
Insurance Regulator                              3.1(g)
Liens                                             3.1(b)
Losses                                            8.1(a)
New York Court                                    11.7(b)
Newco                                             Introductory paragraph
Newco Financing                                   3.2(j)
Permits                                           3.1(l)
Pilot                                             4.7(a)
Pilot Shares                                      4.15(a)
Postclosing Schedule 1.1(d)                       2.5(b)
Preclosing Schedule 1.1(d)                        2.5(a)
Preclosing Transaction Tax Return                 2.5(b)
Preclosing Transactions Tax
  Adjustment                                      2.5(a)
Proxy Statement                                   4.16(c)
Purchase Price                                    2.1
Purchasers                                        4.15(a)
Quarterly SAP Statements                          3.1(g)
Restricted Business                               4.13(a)
Restricted Subsidiary                             4.13(a)
Restructuring Transactions                        4.15(c)


                                      -6-
<PAGE>

SAP                                               3.1(g)
SAP December Balance Sheet                        3.1(g)
SEC                                               3.2(e)
Sellers                                           Recitals
Shareholder Vote                                  3.1(r)
Shares                                            3.1(b)
Tax Allocation Statement                          9.2
Tax Losses                                        9.3
Tax Referee                                       9.2
Taxes                                             3.1(k)
Termination Date                                  10.1(b)
Third Party Claim                                 8.2(a)
Trademark License                                 4.10
Transferred Cash                                  4.15(a)
Transferred Subs                                  4.15(a)
Unaudited GAAP Statements                         3.1(f)
Vote Issuance                                     3.1(r)
Voting Buyer Debt                                 3.2(c)
Voting Company Debt                               3.1(b)
</TABLE>

                                   ARTICLE II

                             PURCHASE OF THE SHARES

                  SECTION 2.1. PURCHASE AND SALE. Upon the terms and subject to
the conditions of this Agreement, CGUIHL agrees to sell to Newco, and Newco
agrees to purchase from CGUIHL, the 8,673 Shares held by CGUIHL (the "CGUIHL
Shares"), and CGULLC agrees to sell to Newco, and Newco agrees to purchase from
CGULLC, the 7,348 Shares held by CGULLC (the "CGULLC Shares"). The aggregate
purchase price (the "Purchase Price") payable by Newco to the Sellers in
connection with the purchase and sale of the Shares consists of (a) cash equal
to the sum of (i) $1,960,434,000 and (ii) the Sales Proceeds Variance and (b)
Holdco Notes in an aggregate principal amount of $210,000,000. CGUIHL shall
receive 54.1351976% of the Purchase Price and CGULLC shall receive 45.8648024%
of the Purchase Price.

                  SECTION 2.2. CLOSING. Unless this Agreement shall have been
terminated pursuant to Section 10.1 and subject to the satisfaction or waiver of
each of the conditions set forth in Article VI, the closing of the purchase and
sale of the Shares (the "Closing") shall take place at 10:00 a.m. on the date
that is no later than the seventh Business Day following the date on which the
last to be fulfilled or waived of the conditions set forth in Sections 6.1(b),
6.1(c), 6.2(g) and 6.3(c) shall be fulfilled or waived in accordance with this
Agreement, at the offices of LeBoeuf, Lamb, Greene & MacRae, L.L.P., 125 West
55th


                                      -7-

<PAGE>

Street, New York, New York, unless another date, time or place is agreed to in
writing by the parties hereto. The actual date and time of the Closing are
herein referred to as the "Closing Date."

                  SECTION 2.3. CLOSING DELIVERIES. At the Closing, (i) CGUIHL
shall deliver to Newco certificates representing the CGUIHL Shares, duly
endorsed in blank or with stock powers duly endorsed in blank, in proper form
for transfer, with appropriate transfer tax stamps, if any, affixed, (ii) CGULLC
shall deliver to Newco certificates representing the CGULLC Shares, duly
endorsed in blank or with stock powers duly endorsed in blank, in proper form
for transfer, with appropriate transfer tax stamps, if any, affixed, (iii) Newco
shall pay to CGUIHL 54.1351976% of the Purchase Price, (iv) Newco shall pay to
CGULLC 45.8648024% of the Purchase Price and (v) on behalf of the Company, Newco
shall pay to CGULLC the then-outstanding principal amount of the Term Note,
together with all accrued interest thereon to the Closing Date, in full
satisfaction of the Term Note. All cash payments pursuant to this Section 2.3
shall be made by wire transfer of immediately available funds to a bank account
designated at least three Business Days prior to the Closing Date by the
respective payee.

                  SECTION 2.4. PURCHASE PRICE DETERMINATION. Sellers and Buyer
shall jointly calculate and agree the amount of the Sales Proceeds Variance at
least 10 Business Days prior to the Closing. Such amount will be used for
purposes of calculation and payment of the Purchase Price at the Closing. For
purposes of clause (b) of the definition of Actual Sales Proceeds, Taxes shall
be calculated and adjusted as set forth in Section 2.5.

                  SECTION 2.5. PRECLOSING TRANSACTIONS TAX ADJUSTMENTS. (a) For
purposes of determining the tax adjustment required to calculate the Actual
Sales Proceeds (the "Preclosing Transactions Tax Adjustment"), and thus the
Sales Proceeds Variance used to adjust the Purchase Price at Closing in Section
2.1, Sellers shall provide Buyer with Section 1.1(d) of the Disclosure Schedule
using tax basis, Available Foreign Tax Credits and the expected market value
purchase price or price amounts determined pursuant to Sections 4.7, 4.8 or 4.9,
as the case may be (all such amounts estimated based on projection of such
amounts as of the date of the expected relevant Preclosing Transaction date)
within 60 days after the date hereof (the "Preclosing Schedule 1.1(d)"). Buyer
shall have the right to review such Preclosing Schedule 1.1(d) within 10 days of
receipt thereof. If after such review, Buyer disagrees with any item on the
Preclosing Schedule 1.1(d), and the parties cannot agree as to the appropriate
calculation thereof, the issue in dispute shall be reviewed by the Tax Referee
in accordance with the terms of Section 9.2 hereof, and such Tax Referee shall
make a determination within 10 days thereafter which determination shall, for
purposes of this Section 2.5(a), be final. For purposes of calculating the Sales


                                      -8-
<PAGE>

Proceeds Variance as of the Closing Date, the Preclosing Schedule 1.1(d) and
Actual Sales Proceeds amount shall be recalculated on or prior to the Closing
using the final market value purchase price or price amounts determined pursuant
to Sections 4.7, 4.8 or 4.9, as the case may be, if different from the expected
market value purchase price or price amounts determined pursuant to Sections
4.7, 4.8 or 4.9, as the case may be, that were originally used to calculate the
amounts on the Preclosing Schedule 1.1(d).

                  (b) Not more than one month after the filing of the U.S.
federal consolidated tax return on which the Preclosing Transactions are
reported (the "Preclosing Transaction Tax Return"), Buyer hereby agrees to
provide Sellers with Section 1.1(d) of the Disclosure Schedule recalculated by
using (i) the tax basis amount actually used on the Preclosing Transaction Tax
Return if different from the estimated tax basis amount used to calculate
Section 1.1(d) of the Disclosure Schedule, (ii) the final market value purchase
price or price amounts determined pursuant to Sections 4.7, 4.8 or 4.9, as the
case may be, unless a determination has been made that such values are
materially incorrect, and (iii) the Available Foreign Tax Credits amount unless
a determination has been made that such amount has been calculated incorrectly
and the amount so calculated is materially incorrect (the "Postclosing Schedule
1.1(d)"). Sellers shall have the right to review such Postclosing Schedule
1.1(d) within 30 days of receipt thereof. If the amounts in (ii) and (iii) above
are materially incorrect or if after review by Sellers, Sellers disagree with
any item on the Postclosing Schedule 1.1(d), and the parties cannot agree as to
the appropriate calculation thereof, the issue in dispute shall be reviewed by
the Tax Referee in accordance with the terms of Section 9.2 hereof, and such Tax
Referee shall make a determination within 30 days thereafter which determination
shall, for purposes of this Section 2.5(b), be final.

                  (c) After the parties have agreed that the Postclosing
Schedule 1.1(d) is correct or the Tax Referee has made its determination in
respect thereof, (i) to the extent that the amount of Taxes on the Postclosing
Schedule 1.1(d) exceeds the amount of Taxes used to determine the Actual Sales
Proceeds and thus Sales Proceeds Variance, Sellers shall pay such excess to
Buyer within the later of 3 Business Days after the parties agree to the amounts
on the Postclosing Schedule 1.1(d) or 3 Business Days after the Tax Referee has
made its final determination, or (ii) to the extent that the amount of Taxes
used to determine the Actual Sales Proceeds and thus the Sales Proceeds Variance
exceeds the amount of Taxes set forth on the Postclosing Schedule 1.1(d), Buyer
shall pay such excess to Sellers on the date that such Postclosing Schedule
1.1(d) is provided to Sellers, or within the later of 3 Business Days after the
parties agree to


                                      -9-
<PAGE>

the amounts on the Postclosing Schedule 1.1(d) or 3 Business Days after the Tax
Referee has made its final determination.

                  (d) Each party shall make additional payments to the other as
appropriate in the event that any amount used to calculate the amount of Taxes
set forth on the Postclosing Schedule 1.1(d) is adjusted pursuant to any
subsequent Tax audit or similar proceeding.

                  (e) Buyer agrees to (i) take or cause to be taken all
reasonable actions to mitigate the reduction or loss of Available Foreign Tax
Credits, and (ii) consult with Sellers in connection with the defense of any
amount set forth on the Postclosing Schedule 1.1(d).


                                   ARTICLE III

                         REPRESENTATIONS AND WARRANTIES

                  SECTION 3.1. REPRESENTATIONS AND WARRANTIES OF CGNU AND
SELLERS. CGNU and Sellers jointly and severally represent and warrant to Buyer
and Newco as follows:

                  (a) ORGANIZATION, STANDING AND CORPORATE POWER. The Company
and each Subsidiary is a corporation duly incorporated, validly existing and in
good standing under the laws of the jurisdiction in which it is incorporated and
has the requisite corporate power and authority to carry on its business as now
being conducted. The Company and each Subsidiary is duly qualified to do
business and is in good standing in each jurisdiction in which the nature of its
business or the ownership or leasing of its properties makes such qualification
necessary, other than in such jurisdictions where the failure to be so qualified
(individually or in the aggregate) would not have a Material Adverse Effect on
the Company.

                  (b) CAPITAL STRUCTURE. The authorized capital stock of the
Company consists of (i) 100,000 shares of Common Stock and (ii) 6,000 shares of
preferred stock. 16,021 shares of Common Stock (the "Shares") are issued and
outstanding. Except as set forth above, no shares of capital stock or other
equity securities of the Company are issued, reserved for issuance or
outstanding. The Shares are duly authorized, validly issued, fully paid and
nonassessable and not subject to preemptive rights. There are not any bonds,
debentures, notes or other indebtedness of the Company having the right to vote
(or convertible into, or exchangeable for, securities having the right to vote)
on any matters on which holders of the Shares may vote ("Voting Company Debt").
Except as disclosed in Section 3.1(c) of the Disclosure Schedule, there are not
any options, warrants, rights, convertible or exchangeable securities, phantom
stock units, stock-based performance units, commitments,


                                      -10-
<PAGE>

contracts, arrangements or undertakings of any kind to which the Company or any
Subsidiary is a party or by which any of them is bound (i) obligating the
Company or any Subsidiary to issue, deliver or sell, or cause to be issued,
delivered or sold, additional shares of capital stock or other equity interests
in, or any security convertible or exercisable for or exchangeable into any
capital stock of or other equity interest in, the Company or of any Subsidiary
or any Voting Company Debt, (ii) obligating the Company or any Subsidiary to
issue, grant, extend or enter into any such option, warrant, right, security,
commitment, contract, arrangement or undertaking or (iii) which provides the
economic equivalent of an equity ownership interest in the Company or the
applicable Subsidiary of the Company. CGUIHL is the record and beneficial owner
of the CGUIHL Shares, and CGULLC is the record and beneficial owner of the
CGULLC Shares, in each case, free and clear of all pledges, claims, liens,
charges, encumbrances and security interests of any kind (collectively,
"Liens"). There are no restrictions upon the voting, dividend rights or transfer
of any shares of Common Stock pursuant to the Company's Certificate of
Incorporation or By-laws or any agreement to which CGNU, either Seller or the
Company is a party. Assuming Newco has the requisite power and authority to be
the lawful owner of the Shares, upon delivery of and payment for the Shares at
the Closing as herein provided, good and valid title to the Shares will pass to
Newco, free and clear of all Liens, other than any Liens arising from acts of
Newco. As of the date hereof, the sum of the outstanding aggregate principal
amount of the Term Note and accrued and unpaid interest thereon is
$1,134,756,945. Sellers have delivered to Buyer a true and complete copy of the
Term Note.

                  (c) SUBSIDIARIES. Section 3.1(c) of the Disclosure Schedule
lists each Subsidiary of the Company and the record owner of all of the
outstanding shares of capital stock of such Subsidiary and each Excluded
Subsidiary. Except as disclosed in Section 3.1(c) of the Disclosure Schedule,
all the outstanding shares of capital stock of each Subsidiary of the Company
have been duly authorized and validly issued and are fully paid and
nonassessable and are owned by the Company, by one or more Subsidiaries of the
Company or by the Company and one or more such Subsidiaries, free and clear of
all Liens. Except for the Subsidiaries of the Company and as disclosed in
Section 3.1(c) of the Disclosure Schedule, neither the Company nor any of its
Subsidiaries owns 10% or more of the outstanding equity interests of any
insurance company. The Company and its Subsidiaries own an aggregate of 447,294
shares of Munich Re and 2,273,812 shares of Societe Generale.

                  (d) AUTHORITY. CGNU is a company duly incorporated, validly
existing and in good standing under the laws of England and Wales. CGUIHL is a
corporation duly incorporated, validly existing and in good standing under the
laws of Luxembourg.


                                      -11-

<PAGE>

CGULLC is a limited liability company duly formed, validly existing and in good
standing under the laws of the State of Delaware. Each of CGNU and CGUIHL has
the requisite corporate power and authority to enter into this Agreement and to
consummate the transactions contemplated by this Agreement. CGULLC has the
requisite limited liability company power and authority to enter into this
Agreement and to consummate the transactions contemplated by this Agreement. The
execution and delivery of this Agreement by CGNU and each Seller and the
consummation by CGNU and each Seller of the transactions contemplated hereby
have been duly authorized by all necessary corporate or limited liability
company (as applicable) action on the part of CGNU and such Seller. This
Agreement has been duly executed and delivered by CGNU and each Seller and,
assuming this Agreement constitutes the valid and binding agreement of Buyer,
Holdco and Newco, constitutes a valid and binding obligation of CGNU and each
Seller, enforceable against CGNU and each Seller in accordance with its terms.

                  (e) NONCONTRAVENTION; CONSENTS. Except as disclosed in Section
3.1(e) of the Disclosure Schedule, the execution and delivery of this Agreement
do not, and the consummation of the transactions contemplated by this Agreement
and the performance by CGNU, each Seller and the Company of their respective
obligations hereunder will not, (i) conflict with any of the provisions of the
Certificate of Incorporation or By-laws of the Company or the comparable
documents of any of its Subsidiaries, any Excluded Subsidiary, CGNU or either
Seller, (ii) subject to the matters referred to in the next sentence, conflict
with, result in a breach of or default (with or without notice or lapse of time,
or both) under, give rise to a right of termination, cancellation or
acceleration of any obligation or to the loss of any material benefit under, or
result in the creation of any Lien on the Shares or any property or asset of
CGNU, either Seller, the Company, any of its Subsidiaries or any Excluded
Subsidiary under, any agreement, permit, license, instrument, contract or other
legally binding arrangement to which CGNU, either Seller, the Company, any of
its Subsidiaries or any Excluded Subsidiary is a party or by which the Shares or
any of their respective properties or assets is bound or (iii) subject to the
matters referred to in the next sentence, contravene any statute, law, rule,
regulation, order, judgment, injunction or award applicable to CGNU, either
Seller, the Company, any of its Subsidiaries or any Excluded Subsidiary or the
Shares or their respective properties or assets, which, in the case of clauses
(ii) and (iii) above, would have a Material Adverse Effect on the Company. No
consent, approval or authorization of, or declaration or filing with, or notice
to, any court or governmental or regulatory authority or agency, domestic or
foreign (a "Governmental Entity"), is required by or with respect to CGNU, any
of its affiliates, either Seller, the Company or any of its Subsidiaries or any
Excluded Subsidiary in connection with the


                                      -12-
<PAGE>

execution and delivery of this Agreement by CGNU or either Seller, the
consummation by CGNU, either Seller or the Company of the transactions
contemplated hereby, or the performance by CGNU, either Seller or the Company of
their respective obligations hereunder except for (i) the filing of premerger
notification and report forms under the Hart-Scott-Rodino Antitrust Improvements
Act of 1976, as amended (the "HSR Act"), (ii) the approvals, filings and notices
required under the insurance laws of the jurisdictions set forth in Section
3.1(e) of the Disclosure Schedule, (iii) such other consents, approvals,
authorizations, declarations, filings or notices as are set forth in Section
3.1(e) of the Disclosure Schedule and (iv) such other consents, approvals,
authorizations, declarations, filings or notices the failure to obtain or make
which would not have a Material Adverse Effect on the Company. Section 3.1(e) of
the Disclosure Schedule lists each state, if any, in which any Insurance
Subsidiary is commercially domiciled.

                  (f) GAAP FINANCIAL STATEMENTS. Sellers have previously
delivered to Buyer copies of (i) the audited consolidated balance sheet of the
Company and its Subsidiaries as of December 31, 1999 (the "GAAP December Balance
Sheet") and the related consolidated statements of income, stockholders' equity
and cash flows for the year then ended, together with the notes to such
financial statements (together with the GAAP December Balance Sheet, the "Base
Financial Statements") and (ii) the unaudited consolidated balance sheets of the
Company and its Subsidiaries as of each of March 31, 2000 and June 30, 2000 and
the related consolidated statements of income, stockholders' equity and cash
flows for the periods then ended (the "Unaudited GAAP Statements"). Except as
set forth in the notes thereto, the foregoing financial statements were prepared
in accordance with U.S. generally accepted accounting principles ("GAAP")
applied on a consistent basis during the periods presented and fairly presented
in all material respects the consolidated financial position of the Company and
its consolidated Subsidiaries as of the dates thereof and the consolidated
results of their operations and cash flows for the periods then ended (subject,
in the case of the Unaudited GAAP Statements, to the absence of footnotes and to
normal recurring year-end adjustments).

                  (g) SAP FINANCIAL STATEMENTS. Sellers have previously
delivered to Buyer copies of (i) the balance sheet of each Insurance Subsidiary
as of December 31, 1999 (the "SAP December Balance Sheet") and the related
statement of operations and statement of cash flows for the year then ended,
together with the notes thereto and (ii) the balance sheets of each Insurance
Subsidiary as of each of March 31, 2000 and June 30, 2000 and the related
statements of operations and statement of cash flows for the periods then ended
(the "Quarterly SAP Statements"), in each case as filed with the Governmental
Entity charged with supervision of insurance companies of such subsidiary's


                                      -13-
<PAGE>

jurisdiction of domicile (the "Insurance Regulator"). Except as set forth in the
notes thereto, the foregoing financial statements (the "Company SAP Statements")
were prepared in conformity with statutory accounting practices prescribed or
permitted by the applicable Insurance Regulator applied on a consistent basis
("SAP") and presented fairly in all material respects the statutory financial
condition of the applicable Insurance Subsidiary at their respective dates and
the results of operations and cash flows of such Insurance Subsidiary for each
of the periods then ended (subject, in the case of the Quarterly SAP Statements,
to normal recurring year-end adjustments). The Company SAP Statements complied
in all material respects with all applicable laws, rules and regulations when
filed, and no material deficiency has been asserted with respect to any Company
SAP Statements by the applicable Insurance Regulator or any other Governmental
Entity. The annual statutory balance sheets and income statements included in
the Company SAP Statements have been audited by PricewaterhouseCoopers, and
Sellers have delivered to Buyer true and complete copies of all audit opinions
related thereto.

                  (h) NO UNDISCLOSED LIABILITIES. There are no liabilities of
the Company or any Subsidiary of any kind that would be required to be reflected
on (x) a balance sheet (or in the notes thereto) prepared in accordance with
GAAP or (y) a balance sheet (or in the notes thereto) prepared in accordance
with SAP, other than (i) liabilities provided for on or disclosed in (1) the
GAAP December Balance Sheet or in the notes thereto, (2) the balance sheets
included in the Unaudited GAAP Statements or in the notes thereto, (3) the SAP
December Balance Sheet or in the notes thereto or (4) the balance sheets
included in the Quarterly SAP Statements or in the notes thereto, (ii)
liabilities disclosed in this Agreement (including Section 3.1(h) or any other
Section of the Disclosure Schedule), (iii) liabilities for losses and loss
adjustment expenses arising under policies or contracts of insurance or
reinsurance written or assumed by an Insurance Subsidiary, (iv) liabilities
incurred in the ordinary course of business since December 31, 1999 and not in
violation of this Agreement, (v) other liabilities incurred since December 31,
1999 that would not reasonably be expected to have a Material Adverse Effect on
the Company and (vi) liabilities for Taxes for periods in respect of which CGNU
and Sellers are obligated to indemnify Buyer under Section 9.1.

                  (i) ABSENCE OF CERTAIN CHANGES OR EVENTS. Except as disclosed
in Section 3.1(i) of the Disclosure Schedule, since December 31, 1999, the
Company and its Subsidiaries have conducted their business in the ordinary
course (except for the transactions contemplated hereby and related actions) and
there has not occurred (i) any event or change having or that would reasonably
be expected to have a Material Adverse Effect on the Company, (ii) any
declaration, setting aside or payment of any


                                      -14-
<PAGE>

dividend or other distribution (whether in cash, stock or property) with respect
to any of the Company's outstanding capital stock, (iii) any change in
accounting methods, principles or practices by the Company or any of its
Subsidiaries, except insofar as may have been required after the date hereof by
law or regulation or by a change in applicable accounting principles or (iv) any
material change in underwriting, billing, claims adjustment, investment or
reinsurance methods, principles or practices by the Company or any of its
Subsidiaries, except insofar as may have been required after the date hereof by
law or regulation.

                  (j) BENEFIT PLANS. (i) Each material written Company Employee
Benefit Plan is listed in Section 3.1(j) of the Disclosure Schedule. Each
Company Employee Benefit Plan is in substantial compliance with all applicable
laws and has been administered and operated in all material respects in
accordance with its terms, except where the failure to do so would not
reasonably be expected to result in a Material Adverse Effect on the Company.

                  (ii) Each Company Employee Benefit Plan which is intended to
be "qualified" within the meaning of Section 401(a) of the Code is so qualified
and, to the Knowledge of Sellers, no event has occurred and no condition exists
which could reasonably be expected to result in the revocation of such qualified
status.

                  (iii) Full payment has been made of all amounts so required
under the terms of the Company Employee Benefit Plans on or prior to the date
hereof (excluding any amounts not yet due).

                  (iv) No Company Employee Benefit Plan which is subject to Part
3 of Subtitle B of Title I of ERISA has incurred any "accumulated funding
deficiency" (within the meaning of Section 302 of ERISA or Section 412 of the
Code), whether or not waived.

                  (v) Except as disclosed in Section 3.1(j) of the Disclosure
Schedule, neither the Company nor any of the Company's Subsidiaries or any other
"disqualified person" or "party in interest" (as defined in Section 4975(e)(2)
of the Code or Section 3(14) of ERISA, respectively), has engaged in any
transaction in connection with any Company Employee Benefit Plan that could
reasonably be expected to result in the imposition of a penalty pursuant to
Section 502(i) of ERISA, damages pursuant to Section 409 of ERISA or a tax
pursuant to Sections 4971 through 4980E of the Code, in each case, which would
have a Material Adverse Effect on the Company.

                  (vi) Except as disclosed in Section 3.1(j) of the Disclosure
Schedule, the Company has not maintained any Company Employee Benefit Plan
(other than a Company Employee Benefit Plan which is intended to be "qualified"
within the meaning of Section


                                      -15-
<PAGE>

401(a) of the Code) which provides benefits with respect to Employees or former
employees following their termination of service with the Company (other than as
required pursuant to COBRA). Each Company Employee Benefit Plan subject to the
requirements of COBRA has been operated in substantial compliance with the
provisions of COBRA and the applicable regulations thereunder, except where the
failure to so comply would not have a Material Adverse Effect on the Company.

                  (vii) During the 3 years ending on the date of this Agreement,
except as disclosed in Section 3.1(j) of the Disclosure Schedule, no Company
Employee Benefit Plan that is subject to Title IV of ERISA has been terminated
or is or has been the subject of termination proceedings pursuant to Title IV of
ERISA.

                  (viii) The "amount of unfunded benefit liabilities" within the
meaning of section 4001(a)(18) of ERISA does not exceed zero with respect to any
Company Employee Benefit Plan subject to Title IV of ERISA.

                  (ix) No notice of "reportable event" (within the meaning of
section 4043 of ERISA) for which the 30-day reporting requirement has not been
waived or extended has occurred with respect to any Company Employee Benefit
Plan within the twelve months ending on the date of this Agreement.

                  (x) With respect to each "multiemployer plan" (as defined in
Section 3(37) of ERISA, (i) no withdrawal liability has been incurred by the
Seller or the Company, and neither Seller nor the Company has reason to believe
that any such liability will be incurred, prior to the Closing Date, (ii) no
such plan is in "reorganization" (within the meaning of Section 4241 of ERISA),
(iii) no notice has been received that increased contributions may be required
to avoid a reduction in plan benefits or the imposition of an excise tax, or the
plan is or may become "insolvent" (within the meaning of Section 4245 of ERISA),
(iv) no proceedings have been instituted by the Pension Benefit Guaranty
Corporation against the plan, (v) there is no contingent liability for
withdrawal liability by reason of a sale of assets pursuant to Section 4204 of
ERISA, and (vi) except as disclosed in Section 3.1(j) of the Disclosure
Schedule, if the Company were to have a complete or partial withdrawal under
Sections 4203 or 4205 of ERISA as of the Closing, no obligation to pay
withdrawal liability would exist on the part of the Company.

                  (xi) Except as disclosed in Section 3.1(j) of the Disclosure
Schedule or as previously disclosed to Buyer, no benefit under any Company
Employee Benefit Plan, including any severance or parachute or similar or other
plan or agreement, will be established, be increased, or become accelerated,
vested


                                      -16-
<PAGE>

or payable, by reason of the execution and delivery of this Agreement or any
transactions contemplated under this Agreement, and no amount payable or benefit
provided under any Company Employee Benefit Plan will fail to be deductible by
reason of Section 280G of the Code.

                  (xii) No tax has been incurred under Section 511 of the Code
with respect to any Company Employee Benefit Plan (or trust or other funding
vehicle pursuant thereto).

                  (k) TAXES. Except as disclosed in Section 3.1(k) of the
Disclosure Schedule and except as would not have a Material Adverse Effect on
the Company:

                  (i) The Company and each of its Subsidiaries has timely filed
all of its Tax returns and reports and all other Tax returns and reports
required to be filed by it and all such returns and reports are true and
complete. The Company and each of its Subsidiaries have timely paid all Taxes
due with respect to the Taxable periods covered by such returns and reports and
all other Taxes, and the financial statements reflect an adequate reserve for
all Taxes payable by the Company and each of its Subsidiaries for all Taxable
periods and portions thereof through the date of such financial statements.

                  (ii) No Tax return or report of the Company or any of its
Subsidiaries is under audit or examination by any Taxing authority, and no
written notice of such an audit or examination has been received by the Company
or any of its Subsidiaries. The relevant statute of limitations is closed with
respect to all United States Federal Tax returns of the Company and each of its
Subsidiaries.

                  (iii) There is no currently effective agreement or other
document extending, or having the effect of extending, the period of assessment
or collection of any Taxes and no power of attorney (other than powers of
attorney authorizing employees of the Company to act on behalf of the Company)
with respect to any Taxes has been executed or filed with any Taxing authority.

                  (iv) No Liens for Taxes exist with respect to any assets or
properties of the Company or any of its Subsidiaries, except for statutory Liens
for Taxes not yet due and Liens for Taxes that the Company or any of its
Subsidiaries is contesting in good faith through appropriate proceedings and for
which adequate reserves have been established.

                  (v) None of the Company or any of its Subsidiaries is a party
to or bound by any Tax sharing agreement, Tax indemnity obligation or similar
agreement, arrangement or practice with respect to Taxes (including any advance
pricing agreement,


                                      -17-

<PAGE>

closing agreement or other agreement relating to Taxes with any Taxing
authority).

                  (vi) None of the Company or any of its Subsidiaries has been a
member of a group of companies during a period for which such group filed a Tax
return or report on an affiliated, combined, consolidated or unitary basis other
than a group of which the Company or any existing direct or indirect Subsidiary
of the Company is the common parent, and none of the Company or any of its
Subsidiaries has any liability for Taxes of any other person under Treasury
Regulation Section 1.1502-6 (or comparable provisions of foreign, state or local
law), as a transferee or successor, by contract or otherwise.

                  (vii) None of the Company or any of its Subsidiaries has
constituted either a "distributing corporation" or a "controlled corporation" in
a distribution of stock qualifying for tax-free treatment under Section 355(e)
of the Code (A) in the two years prior to the date of this Agreement or (B) in a
distribution that could otherwise constitute part of a "plan" or "series of
related transactions" (within the meaning of Section 355(e) of the Code) in
conjunction with the transactions contemplated by this Agreement.

                  (viii) The Company and its Subsidiaries have complied with all
applicable statutes, laws, ordinances, rules and regulations relating to the
payment and withholding of Taxes (including withholding of Taxes pursuant to
Sections 1441, 1442, 3121 and 3402 of the Code or similar provisions under any
foreign federal laws or any state or local laws, domestic or foreign) and have,
within the time and the manner prescribed by law, withheld from and paid over to
the proper governmental authorities all amounts required to be so withheld and
paid over under applicable laws.

                  (ix) (A) No person has filed with respect to the Company or
any of its Subsidiaries, or with respect to any property held by the Company or
any of its Subsidiaries, any consent under Section 341 of the Code, (B) no
property of the Company or any of its Subsidiaries is "tax-exempt use property"
within the meaning of Section 168(h) of the Code, (C) neither the Company nor
any of its Subsidiaries is a party to any lease made pursuant to Section
168(f)(8) of the Internal Revenue Code of 1954, as amended and in effect prior
to the date of enactment of the Tax Equity and Fiscal Responsibility Act of
1982, and (D) none of the assets of the Company or any of its Subsidiaries is
subject to a lease under Section 7701(h) of the Code or under any predecessor
thereto.

                  (x) None of the Company or any of its Subsidiaries was, at any
time during a period specified in Section 897(c)(1)(A)(ii) of the Code, a United
States real property


                                      -18-
<PAGE>

holding corporation within the meaning of Section 897(c)(2) of the Code.

                  (xi) No notice of a claim or pending investigation has been
received or, to the Knowledge of Sellers, has been threatened by any domestic or
foreign (whether national, federal, state, provincial or otherwise) jurisdiction
with which the Company or any of its Subsidiaries does not currently file Tax
returns, alleging that the Company or such Subsidiary has a duty to file Tax
returns and pay Taxes or is otherwise subject to the Taxing authority of such
jurisdiction, nor does either Seller have any Knowledge that the Company or any
of its Subsidiaries has received any written notice or questionnaire from any
such jurisdiction that asserts that the Company or such Subsidiary may have a
duty to file such Tax returns and pay such Taxes.

                  (xii) As used in this Agreement, "Taxes" shall include all
domestic and foreign (whether national, federal, state, provincial, local or
otherwise) income, franchise, property, sales, excise, employment, payroll,
social security, value-added, ad valorem, transfer, withholding and other taxes,
including taxes based on or measured by gross receipts, profits, sales, use or
occupation, tariffs, levies, impositions, assessments or governmental charges of
any nature whatsoever, including any interest penalties or additions with
respect thereto.

                  (l) COMPLIANCE WITH APPLICABLE LAWS. The Company and each of
its Subsidiaries has in full force and effect all Federal, state, local and
foreign governmental approvals, authorizations, consents, licenses, permits and
rights (collectively, "Permits") necessary for it to own, lease or operate its
properties and assets and to carry on its business as now conducted, except for
failures of Permits to be in full force and effect which would not have a
Material Adverse Effect on the Company. Except as disclosed in Section 3.1(l) of
the Disclosure Schedule, the Company and its Subsidiaries are in compliance with
all applicable statutes, laws, rules, regulations and orders of any Governmental
Entity, except for such noncompliance which would not have a Material Adverse
Effect on the Company. Except as disclosed in Section 3.1(l) of the Disclosure
Schedule or as would not reasonably be expected to have a Material Adverse
Effect on the Company, no investigation, examination or review of any Insurance
Subsidiary other than in the ordinary course of business by any Governmental
Entity is pending nor has any Governmental Entity indicated in writing an
intention to conduct the same.

                  (m) LITIGATION. Except as disclosed in Section 3.1(m) of the
Disclosure Schedule, there is no suit, action, proceeding or arbitration
(excluding those relating to policies or contracts of insurance or reinsurance
written or assumed by any Insurance Subsidiary) pending or threatened in writing
against or affecting


                                      -19-
<PAGE>

the Company or any of its Subsidiaries that seeks (i) (x) unspecified damages
and that would reasonably be expected to result in damages of more than
$1,000,000 or (y) damages of more than $1,000,000 or (ii) material injunctive
relief. Except as disclosed in Section 3.1(m) of the Disclosure Schedule, there
is no judgment, decree, injunction or order (excluding those relating to
policies or contracts of insurance or reinsurance written or assumed by any
Insurance Subsidiary) of any Governmental Entity or arbitrator outstanding
against the Company or any of its Subsidiaries having, or which would reasonably
be expected to have, a Material Adverse Effect on the Company. As of the date of
this Agreement, there is no suit, action, proceeding or arbitration pending or
threatened in writing against or affecting CGNU or any affiliate of CGNU that
(i) seeks to restrain or enjoin the consummation of any of the transactions
contemplated by this Agreement or (ii) is reasonably likely to materially impair
the ability of CGNU, either Seller or the Company to consummate any of the
transactions contemplated by this Agreement.

                  (n) RESERVES. Except as set forth in Section 3.1(n) of the
Disclosure Schedule, Sellers have delivered to Buyer true and complete copies of
all actuarial reports prepared by any unaffiliated third party since December
31, 1997 on behalf and at the request of CGNU, either Seller, the Company or any
Insurance Subsidiary that are in the possession of CGNU, Sellers, the Company or
any of its Subsidiaries relating to the loss and loss adjustment expense
reserves of any of the Insurance Subsidiaries. Notwithstanding any other
provision of this Agreement (including Sections 3.1(f), (g) and (h) or any other
provision of this Section 3.1), Sellers are not making any representations,
express or implied, in or pursuant to this Agreement (x) concerning the reserves
for losses, loss adjustment expenses or uncollectible reinsurance, or the
reinsurance recoverable asset, of the Company or any of the Insurance
Subsidiaries, including (i) whether such reserves are adequate or sufficient or
whether such asset is collectible or (ii) whether such reserves or asset were
determined in accordance with any actuarial, statutory or other standard, or (y)
concerning any financial statement "line item" or asset, liability or equity
amount to the extent affected by any of the matters referred to in the preceding
clause (x).

                  (o) CONTRACTS. Section 3.1(o) of the Disclosure Schedule sets
forth a complete and accurate list, as of the date hereof, of all contracts to
which the Company or any Subsidiary is a party (excluding any policy or contract
of insurance or reinsurance written, assumed or ceded) or by which any of their
respective assets are bound which (i) contain obligations of the Company or any
Subsidiary in excess of $500,000, (ii) are otherwise material to the business of
the Company and the Subsidiaries taken as a whole or (iii) prohibit or restrict
the Company or any of its Subsidiaries from engaging in any business activity in
any geographic area, line of business or otherwise in


                                      -20-
<PAGE>

competition with any other person (collectively, the "Contracts"). None of
Sellers, the Company or any Subsidiary has received written notice of
cancellation of, or the intention of any party to cancel, any Contract, the
cancellation of which would have, individually or in the aggregate, a Material
Adverse Effect on the Company. Except as disclosed in Section 3.1(o) of the
Disclosure Schedule, all Contracts required to be listed in the Disclosure
Schedule are valid, binding and in full force and effect and are enforceable by
the Company or the applicable Subsidiary in accordance with their terms. Except
as disclosed in Section 3.1(o) of the Disclosure Schedule, the Company or the
applicable Subsidiary has performed all material obligations required to be
performed by it to date under the Contracts, and it is not (with or without the
lapse of time or the giving of notice or both) in breach or default in any
material respect thereof and, to the Knowledge of Sellers, no other party to any
Contract is (with or without the lapse of time or the giving of notice or both)
in breach or default in any material respect thereunder.

                  (p) INSURANCE REGULATORY MATTERS. The Company has delivered to
Buyer copies of all financial examination reports of applicable Insurance
Regulators with respect to any Insurance Subsidiary which have been issued since
January 1, 1997. Except as disclosed in Section 3.1(p) of the Disclosure
Schedule, no material violations have been asserted in writing by any Insurance
Regulator against any Insurance Subsidiary, other than any violation which has
been cured or otherwise resolved to the satisfaction of such Insurance Regulator
or which is no longer being pursued by such Insurance Regulator following a
response by the relevant Insurance Subsidiary. Each Insurance Subsidiary
satisfies in all material respects all applicable requirements for the renewal
of its license to transact insurance business in each jurisdiction in which it
is currently authorized to transact insurance business.

                  (q) BROKERS. No broker, investment banker, financial advisor
or other person, other than Goldman, Sachs & Co., the fees and expenses of which
will be paid by Sellers, is entitled to any broker's, finder's, financial
advisor's or other similar fee or commission in connection with the transactions
contemplated by this Agreement based upon arrangements made by or on behalf of
CGNU, either Seller or the Company.

                  (r) PURCHASE NOT FOR DISTRIBUTION. The Holdco Note to be
acquired under the terms of this Agreement will be acquired by each Seller for
its own account and not with a view to distribution. Sellers will not resell,
transfer, assign or distribute the Holdco Note, except in compliance with the
registration requirements of the Securities Act or pursuant to an available
exemption therefrom.



                                      -21-

<PAGE>

                  (s) FINANCIAL RISK MANAGEMENT INSTRUMENTS. All interest rate
swaps, caps, floors, option agreements, futures and forward contracts and other
similar financial risk management arrangements, if any, whether entered into for
the Company's own account, or for the account of one or more of its
Subsidiaries, were entered into (i) in accordance with the Company's regular
business practices and all applicable laws, rules, regulations and regulatory
policies and (ii) with counterparties believed to be financially responsible at
the time; and each of them, if any, constitutes the valid and legally binding
obligation of the Company or one of its Subsidiaries, enforceable in accordance
with its terms, and is in full force and effect.

                  (t) CORPORATE RECORDS. Sellers have made available to Buyer
complete copies of the Certificates of Incorporation, By-laws and minute books
since January 1, 1990 of meetings of stockholders, the Boards of Directors and
committees of the Boards of Directors of the Company and each of its
Subsidiaries.

                  (u) COMPANY INVESTMENT ASSETS. CGNU has made available to
Buyer a true and complete list of all Company Investment Assets (as defined
below) as of August 31, 2000, with information included therein as to the cost
of each such Company Investment Asset and the market value thereof as of August
31, 2000. Except as disclosed in Section 3.1(u) of the Disclosure Schedule or as
a result of any statutory deposit, the Company or a Subsidiary of the Company
has good and marketable title to all Company Investment Assets, free and clear
of any Lien. Except as disclosed in Section 3.1(u) of the Disclosure Schedule,
as of the date hereof, none of the Company Investment Assets is in default in
the payment of principal or interest or dividends or, to the Knowledge of
Sellers, permanently impaired to any extent. For purposes of this Agreement,
"Company Investment Assets" means all marketable fixed income securities, common
stock and preferred stock held in the investment portfolios of the Insurance
Subsidiaries.

                  (v) REINSURANCE. Sellers have made available to Buyer a
complete list of all reinsurance or coinsurance treaties or agreements,
including retrocessional agreements, under which any Insurance Subsidiary is
currently ceding new and renewal business (the "Current Treaties"). All Current
Treaties are valid and binding in accordance with their terms and are in full
force and effect. Except as disclosed in Section 3.1(v) of the Disclosure
Schedule, neither the Company nor any Insurance Subsidiary, nor, to the
Knowledge of Sellers, any other party to a Current Treaty is in default as to
any provision thereof, and, to the Knowledge of Sellers, no condition exists
that, with or without notice or lapse of time or both, would constitute a
default thereunder.

                  (w) TRANSACTIONS WITH AFFILIATES. From May 31, 2000 to the
date of this Agreement, neither the Company nor any of its


                                      -22-

<PAGE>

Subsidiaries has sold, leased or otherwise transferred any property or assets
to, or purchased, leased or acquired any property or assets from, or otherwise
engaged in any transactions with, any of its affiliates, other than (A)
transactions that were at prices and on terms and conditions not less favorable
to the Company or the applicable Subsidiary of the Company than could be
obtained on an arm's length basis from unrelated third parties, (B) transactions
between or among the Company and its Subsidiaries not involving any other
affiliate or (C) transactions set forth on Section 4.9 of the Disclosure
Schedule.

                  (x) OWNED REAL ESTATE. Section 3.1(x) of the Disclosure
Schedule sets forth a list of all real property owned by the Company or any
Subsidiary. Except as disclosed in Section 3.1(x) of the Disclosure Schedule,
the Company or one or more of its Subsidiaries has good and marketable title to
such real property, free and clear of all Liens, other than Liens or defects in
title that do not materially detract from the values of such properties or
materially interfere with the present uses thereof.

                  SECTION 3.2. REPRESENTATIONS AND WARRANTIES OF BUYER AND
NEWCO. Buyer and Newco jointly and severally represent and warrant to CGNU and
Sellers as follows:

                  (a) ORGANIZATION, STANDING AND CORPORATE POWER. Buyer and each
Subsidiary of Buyer (including Holdco and Newco) is an entity duly organized,
validly existing and in good standing under the laws of the jurisdiction in
which it is organized and has the requisite power and authority to carry on its
business as now being conducted. Buyer and each Subsidiary of Buyer is duly
qualified to do business and is in good standing in each jurisdiction in which
the nature of its business or the ownership or leasing of its properties makes
such qualification necessary, other than in such jurisdictions where the failure
to be so qualified (individually or in the aggregate) would not have a Material
Adverse Effect on Buyer. Other than in connection with the transactions
contemplated hereby, neither Holdco nor Newco has heretofore conducted any
business or entered into any agreements or arrangements nor is it subject to any
obligations or liabilities of any kind.

                  (b) AUTHORITY; NONCONTRAVENTION. Buyer, Holdco and Newco each
has the requisite power and authority to enter into this Agreement and to
consummate the transactions contemplated by this Agreement. The execution and
delivery of this Agreement by each of Buyer, Holdco and Newco and the
consummation by each of Buyer, Holdco and Newco of the transactions contemplated
by this Agreement have been duly authorized by all necessary corporate action on
the part of each of Buyer, Holdco and Newco. Except as described in Section
3.2(r) with respect to Buyer, no action by the stockholders of Buyer, Holdco or
Newco is necessary to


                                      -23-
<PAGE>

authorize the execution and delivery by Buyer, Holdco or Newco of this Agreement
and the consummation by Buyer, Holdco and Newco of the transactions contemplated
hereby. This Agreement has been duly executed and delivered by Buyer, Holdco and
Newco and, assuming this Agreement constitutes the valid and binding agreement
of CGNU and Sellers, constitutes a valid and binding obligation of each of
Buyer, Holdco and Newco, enforceable against such party in accordance with its
terms. Holdco has the requisite power and authority to execute, deliver and
perform its obligations under the Holdco Note. Except as disclosed in Section
3.2(b) of the Disclosure Schedule, the execution and delivery of this Agreement
do not, and the consummation of the transactions contemplated by this Agreement
and the performance by Buyer, Holdco and Newco of their respective obligations
hereunder will not, (i) conflict with any of the provisions of the Certificate
of Incorporation or the By-laws or comparable documents of Buyer or any of its
Subsidiaries, (ii) subject to the matters referred to in the next sentence,
conflict with, result in a breach of or default (with or without notice or lapse
of time, or both) under, give rise to a right of termination, cancellation or
acceleration of any obligation or to the loss of any material benefit under, or
result in the creation of any Lien on any property or asset of Buyer or any of
its Subsidiaries under, any agreement, permit, license, instrument, contract or
other legally binding arrangement to which Buyer or any of its Subsidiaries is a
party or by which any of their respective properties or assets is bound or (iii)
subject to the matters referred to in the next sentence, contravene any statute,
law, rule, regulation, order, judgment, injunction or award applicable to Buyer
or any of its Subsidiaries or their respective properties or assets,
which, in the case of clauses (ii) and (iii) above, would have a Material
Adverse Effect on Buyer or materially impair the ability of Buyer, Holdco or
Newco to consummate any of the transactions contemplated hereby. No consent,
approval or authorization of, or declaration or filing with, or notice to, any
Governmental Entity is required by or with respect to Buyer or any of its
affiliates (including Holdco and Newco) in connection with the execution and
delivery of this Agreement by Buyer, Holdco and Newco, the consummation by
Buyer, Holdco and Newco of any of the transactions contemplated hereby, or the
performance by Buyer, Holdco and Newco of their respective obligations
hereunder, except for (i) the filing of premerger notification and report forms
under the HSR Act, (ii) the approvals, filings and notices required under the
insurance laws of the jurisdictions set forth in Section 3.2(b) of the
Disclosure Schedule, (iii) such other consents, approvals, authorizations,
declarations, filings or notices as are set forth in Section 3.2(b) of the
Disclosure Schedule and (iv) such other consents, approvals, authorizations,
declarations, filings or notices the failure to obtain or make which, in the
aggregate, would not have a Material Adverse Effect on Buyer or materially


                                      -24-
<PAGE>

impair the ability of Buyer, Holdco or Newco to consummate any of the
transactions contemplated hereby.

                  (c) CAPITAL STRUCTURE. The authorized capital stock of Buyer
consists of (i) 50,000,000 common shares, par value $1.00 per share ("Buyer
Common Stock"), and (ii) 20,000,000 preference shares. As of the date hereof,
5,880,115 shares of Buyer Common Stock are issued and outstanding, 81,000 shares
of Buyer Common Stock were subject to employee stock options and 462,400 shares
of Buyer Common Stock were reserved for issuance pursuant to Buyer Employee
Benefit Plans. Except as set forth above, as of the date hereof no shares of
capital stock or other equity securities of Buyer are issued, reserved for
issuance or outstanding. All outstanding shares of capital stock of Buyer are,
and any shares of Buyer Common Stock issued upon settlement of the Holdco Note
will be at the time of issuance, duly authorized, validly issued, fully paid and
nonassessable and not subject to preemptive rights. There are not any bonds,
debentures, notes or other indebtedness of Buyer having the right to vote (or
convertible into, or exchangeable for, securities having the right to vote) on
any matters on which holders of the Buyer Common Stock may vote ("Voting Buyer
Debt"). Except as set forth above or as disclosed in Section 3.2(c) of the
Disclosure Schedule, as of the date hereof there are not any options, warrants,
rights, convertible or exchangeable securities, commitments, contracts,
arrangements or undertakings of any kind to which Buyer or any Subsidiary is a
party or by which any of them is bound (i) obligating Buyer or any Subsidiary to
issue, deliver or sell, or cause to be issued, delivered or sold, additional
shares of capital stock or other equity interests in, or any security
convertible or exercisable for or exchangeable into any capital stock of or
other equity interest in, Buyer or of any Subsidiary or any Voting Buyer Debt or
(ii) obligating Buyer or any Subsidiary to issue, grant, extend or enter into
any such option, warrant, call, right, security, commitment, contract,
arrangement or undertaking. Except as disclosed in Section 3.2(c) of the
Disclosure Schedule, there are no restrictions upon the voting, dividend rights
or transfer of any shares of Buyer Common Stock pursuant to Buyer's
organizational documents or any agreement to which Buyer is a party. The Holdco
Note has been duly authorized by Holdco and, when executed, issued and delivered
to Sellers as contemplated by this Agreement, will constitute the valid and
binding obligation of Holdco, enforceable against Holdco in accordance with its
terms.

                  (d) SUBSIDIARIES. Section 3.2(d) of the Disclosure Schedule
lists each Subsidiary of Buyer. Except as disclosed in Section 3.2(d) of the
Disclosure Schedule, all the outstanding shares of capital stock of each
Subsidiary of Buyer have been duly authorized and validly issued and are fully
paid and nonassessable and are owned by Buyer, by one or more Subsidiaries


                                      -25-
<PAGE>

of Buyer or by Buyer and one or more such Subsidiaries, free and clear of all
Liens.

                  (e) SEC DOCUMENTS; GAAP FINANCIAL STATEMENTS. Buyer has filed
all required reports, schedules, forms, statements and other documents with the
U.S. Securities and Exchange Commission (the "SEC") since January 1, 1999 (the
"Buyer SEC Documents"). As of their respective dates, the Buyer SEC Documents
complied as to form in all material respects with the requirements of the
Securities Act or the Exchange Act, as the case may be, and the rules and
regulations of the SEC promulgated thereunder applicable to such Buyer SEC
Documents, and none of the Buyer SEC Documents as of such dates contained any
untrue statement of a material fact or omitted to state a material fact required
to be stated therein or necessary in order to make the statements therein, in
light of the circumstances under which they were made, not misleading. The
financial statements of Buyer included in the Buyer SEC Documents comply as to
form in all material respects with applicable accounting requirements and the
published rules and regulations of the SEC with respect thereto, have been
prepared in accordance with GAAP applied on a consistent basis during the
periods presented (except as may be indicated in the notes thereto) and fairly
presented in all material respects the consolidated financial position of Buyer
and its Subsidiaries and the consolidated results of their operations and cash
flows for the periods then ended (subject, in the case of unaudited statements,
to normal recurring year-end adjustments). Except to the extent that information
contained in any Filed Buyer SEC Document has been revised or superseded by a
later Filed Buyer SEC Document, as of the date hereof none of the Filed Buyer
SEC Documents contains any untrue statement of a material fact or omits to state
any material fact required to be stated therein or necessary in order to make
the statements therein, in light of the circumstances under which they were
made, not misleading.

                  (f) SAP FINANCIAL STATEMENTS. Buyer has previously made
available to Seller (i) the balance sheet of each Buyer Insurance Subsidiary as
of December 31, 1999 and the related statement of operations and statement of
cash flows for the year then ended and (ii) the balance sheets of each Buyer
Insurance Subsidiary as of March 31, 2000 and June 30, 2000 and the related
statements of operations and statement of cash flows for the periods then ended,
in each case as filed with the applicable Insurance Regulator. Except as set
forth in the notes thereto, the foregoing financial statements (the "Buyer SAP
Statements") were prepared in conformity with SAP and presented fairly in all
material respects the statutory financial condition of the applicable Buyer
Insurance Subsidiary at their respective dates and the results of operations and
cash flows of the applicable Buyer Insurance Subsidiary for each of the periods
then ended (subject, in the case of the quarterly statements, to normal


                                      -26-
<PAGE>

recurring year-end adjustments). The annual statutory balance sheets and income
statements included in the Buyer SAP Statements have been audited by
PricewaterhouseCoopers and Buyer has made available to Sellers true and complete
copies of all audit opinions related thereto.

                  (g) NO UNDISCLOSED LIABILITIES. There are no liabilities of
Buyer or any Subsidiary of any kind that would be required to be reflected on a
balance sheet (or in the notes thereto) prepared in accordance with GAAP, other
than (i) liabilities provided for on the GAAP balance sheet of Buyer as of
December 31, 1999 as included in the Buyer SEC Documents filed prior to the date
hereof (the "Filed Buyer SEC Documents") or in the notes thereto, (ii)
liabilities disclosed in this Agreement (including the Disclosure Schedule),
(iii) liabilities incurred in the ordinary course of business since December 31,
1999 and (iv) other liabilities incurred since December 31, 1999 that would not
reasonably be expected to have a Material Adverse Effect on Buyer.

                  (h) ABSENCE OF CERTAIN CHANGES OR EVENTS. Except as disclosed
in Section 3.2(h) of the Disclosure Schedule or in the Filed Buyer SEC
Documents, since December 31, 1999, Buyer and its Subsidiaries have conducted
their business in the ordinary course (except for the transactions contemplated
hereby and related actions) and there has not occurred any event or change
having or that would reasonably be expected to have a Material Adverse Effect on
Buyer.

                  (i) BENEFIT PLANS. (i) Each Buyer Employee Benefit Plan is in
substantial compliance with all applicable laws and has been administered and
operated in all material respects in accordance with its terms, except where the
failure to do so would not result in a Material Adverse Effect on Buyer.

                  (ii) Neither Buyer nor any of Buyer's Subsidiaries or any
other "disqualified person" or "party in interest" (as defined in Section
4975(e)(2) of the Code or Section 3(14) of ERISA, respectively), has engaged in
any transaction in connection with any Buyer Employee Benefit Plan that could
reasonably be expected to result in the imposition of a penalty pursuant to
Section 502(i) of ERISA, damages pursuant to Section 409 of ERISA or a tax
pursuant to Sections 4971 through 4980E of the Code, in each case, which would
have a Material Adverse Effect on Buyer.

                  (iii) Except as disclosed in Section 3.2(i) of the Disclosure
Schedule, Buyer has not maintained any Buyer Employee Benefit Plan (other than a
Buyer Employee Benefit Plan which is intended to be "qualified" within the
meaning of Section 401(a) of the Code) which provides benefits with respect to
employees or former employees following their termination of service with


                                      -27-

<PAGE>

Buyer (other than as required pursuant to COBRA). Each Buyer Employee Benefit
Plan subject to the requirements of COBRA has been operated in substantial
compliance with the provisions of COBRA and the applicable regulations
thereunder, except where the failure to so comply would not have a Material
Adverse Effect on Buyer.

                  (iv) No Buyer Employee Benefit Plan is a "multiemployer plan"
(as defined in Section 3(37) of ERISA) and Buyer has not been obligated to
contribute to, and has not otherwise employed, individuals covered under, any
multiemployer plan.

                  (v) Neither Buyer nor any of its Subsidiaries has any
liability with respect to any Buyer Employee Benefit Plan other than liabilities
(i) that are reflected on the most recent audited balance sheet of Buyer
included in the Buyer SEC Documents or (ii) that would not reasonably be
expected to have a Material Adverse Effect on Buyer.

                  (j) COMMITMENTS. CGNU and Sellers have been provided by (i)
Newco a true, correct and complete copy of the financing commitment to Newco
described in Section 3.2(j) of the Disclosure Schedule (the "Newco Financing"),
(ii) Holdco a true, correct and complete copy of the financing commitment to
Holdco described in Section 3.2(j) of the Disclosure Schedule (the "Holdco
Financing") and (iii) Buyer a true, correct and complete copy of the financing
commitment to Buyer described in Section 3.2(j) of the Disclosure Schedule (the
"Buyer Financing" and, together with the Newco Financing and the Holdco
Financing, the "Financings"). The Financings, together with available cash of
Newco, Holdco, Buyer and the Company (after giving effect to the Preclosing
Transactions, the Restructuring Transactions and the payment of not less than
$378 million of dividends to the Company during the period from January 1, 2000
to the earlier of (x) December 31, 2000 and (y) the Closing Date and assuming
the representation made by CGNU and Sellers in the last two sentences of Section
3.1(b) is true) and the Holdco Note, are sufficient, subject to the satisfaction
of the conditions of the Financings, to provide the funds required by Newco to
pay the Purchase Price hereunder, to repay in full the outstanding principal and
interest on the Term Note and to pay all fees and expenses required to be paid
by Newco, Holdco or Buyer in connection with the transactions contemplated by
this Agreement. The consummation of the Financings will not require Shareholder
Approval.

                  (k) COMPLIANCE WITH APPLICABLE LAWS. Buyer and each of its
Subsidiaries has in full force and effect all Permits necessary for it to own,
lease or operate its properties and assets and to carry on its business as now
conducted, except for failures of Permits to be in full force and effect which
would not have a Material Adverse Effect on Buyer. Except as disclosed


                                      -28-
<PAGE>

in Section 3.2(k) of the Disclosure Schedule, Buyer and its Subsidiaries are in
compliance with all applicable statutes, laws, rules, regulations and orders of
any Governmental Entity, except for such noncompliance which would not have a
Material Adverse Effect on Buyer.

                  (l) INSURANCE REGULATORY MATTERS. Buyer has made available to
Sellers copies of all financial examination reports of applicable Insurance
Regulators with respect to any Buyer Insurance Subsidiary which have been issued
since January 1, 1997.

                  (m) PURCHASE NOT FOR DISTRIBUTION. The Shares to be acquired
under the terms of this Agreement will be acquired by Newco for its own account
and not with a view to distribution. Newco will not resell, transfer, assign or
distribute the Shares, except in compliance with the registration requirements
of the Securities Act, or pursuant to an available exemption therefrom.

                  (n) LITIGATION. Except as disclosed in Section 3.2(n) of the
Disclosure Schedule, there is no suit, action, proceeding or arbitration
(excluding those relating to policies or contracts of insurance or reinsurance
written or assumed by any Buyer Insurance Subsidiary) pending or threatened in
writing against or affecting Buyer or any of its Subsidiaries that seeks (i) (x)
unspecified damages and that would reasonably be expected to result in damages
of more than $1,000,000 or (y) damages of more than $1,000,000 or (ii) material
injunctive relief. Except as disclosed in Section 3.1(n) of the Disclosure
Schedule, there is no judgment, decree, injunction or order of any Governmental
Entity or arbitrator outstanding against Buyer or any of its Subsidiaries
having, or which would reasonably be expected to have, a Material Adverse Effect
on Buyer. As of the date of this Agreement, there is no suit, action, proceeding
or arbitration pending or threatened in writing against or affecting Buyer or
any affiliate of Buyer that (i) seeks to restrain or enjoin the consummation of
any of the transactions contemplated by this Agreement or (ii) is reasonably
likely to materially impair the ability of Buyer or Newco to consummate any of
the transactions contemplated by this Agreement

                  (o) BROKERS. No broker, investment banker, financial advisor
or other person, other than Lehman Brothers Inc., the fees and expenses of which
will be paid by Buyer, is entitled to any broker's, finder's, financial
advisor's or other similar fee or commission in connection with the transactions
contemplated by this Agreement based upon arrangements made by or on behalf of
Buyer, Holdco or Newco.

                  (p) CORPORATE RECORDS. Buyer has made available to Sellers
complete copies of the Certificates of Incorporation, By-laws or comparable
documents of Buyer and its Subsidiaries.


                                      -29-
<PAGE>

                  (q) VOTING REQUIREMENTS. If, and only in the event that, in
connection with the transactions contemplated hereby, Buyer or any of its
Subsidiaries, individually or in the aggregate, would issue Buyer Common Stock,
or any security convertible into or exchangeable, exercisable or redeemable for
Buyer Common Stock, in such amount such that shareholder approval under
Paragraph 312.03(c) of the New York Stock Exchange Listed Company Manual (or any
successor provision) would be required (a "Vote Issuance"), then shareholder
approval of such issuance will be required under such Paragraph (or such
successor provision). As used herein, "Shareholder Approval" shall refer to
approval of a Vote Issuance pursuant to and in accordance with the provisions of
the foregoing Paragraph of the New York Stock Exchange Listed Company Manual.
Any such Shareholder Approval would require the affirmative vote of a majority
of the votes cast by the holders of the shares of Buyer Common Stock entitled to
vote thereon at the meeting of holders of Buyer Common Stock held for such
purpose. Prior to the date of any such meeting of holders of Buyer Common Stock,
John J. Byrne will grant to the Board of Directors of Buyer a proxy, which will
not be revoked prior to the date of such meeting and will be in full force and
effect at the time of such meeting, with respect to voting any shares of Buyer
Common Stock beneficially owned by Mr. Byrne in excess of 19.9% of the issued
and outstanding shares of Buyer Common Stock.


                                   ARTICLE IV

                                    COVENANTS

                  SECTION 4.1. CONDUCT OF BUSINESS. (a) Except as expressly
contemplated or permitted by this Agreement, from the date of this Agreement to
the Closing Date, CGNU and Sellers shall cause the Company and its Subsidiaries
to carry on their respective businesses only in the ordinary course of business
consistent with past practice and use commercially reasonable efforts to
preserve intact their current business organizations and their material
relationships with agents, insureds and others having business dealings with
them, keep available the services of their current employees and maintain their
material rights and franchises. Without limiting the generality of the
foregoing, from the date of this Agreement to the Closing Date, except as set
forth in Section 4.1 of the Disclosure Schedule or as expressly contemplated or
permitted by this Agreement, CGNU and Sellers shall not permit the Company or
any of its Subsidiaries to, without the prior consent of Buyer, which consent
shall not be unreasonably withheld with respect to any matter described in
clause (xiii) and, to the extent relating to a matter described in such clause,
in clause (xvii) below:


                                      -30-
<PAGE>

                  (i) (A) declare, set aside or pay any dividends on, or make
any other distributions (whether in cash, stock or property) in respect of, any
of the Company's outstanding capital stock, (B) split, combine or reclassify any
of its outstanding capital stock or issue or authorize the issuance of any other
securities in respect of, in lieu of or in substitution for shares of its
outstanding capital stock or (C) purchase, redeem or otherwise acquire any
shares of outstanding capital stock of the Company or any of its Subsidiaries or
any rights, warrants or options to acquire, or securities convertible into or
redeemable for, any such shares;

                  (ii) issue, sell, grant, pledge or otherwise encumber any
shares of its capital stock, any other voting securities or any securities
convertible into or redeemable for, or any rights, warrants or options to
acquire, any such shares, voting securities or convertible securities;

                  (iii) amend its certificate of incorporation, by-laws or other
comparable organizational documents or amend the Term Note;

                  (iv) except as set forth on Section 4.1 of the Disclosure
Schedule, acquire any corporation, partnership, joint venture, association or
other business organization or division thereof, or a substantial portion of the
assets of any of the foregoing (including by way of reinsurance);

                  (v) (A) incur any indebtedness for borrowed money or guarantee
or otherwise become responsible for any such indebtedness of another person,
except in the ordinary course of business consistent with past practice (but not
for any Excluded Subsidiary) or (B) make any loans, advances or capital
contributions to, or investments in, any other person, other than to the Company
or to any direct or indirect wholly owned Subsidiary of the Company (other than
any Excluded Subsidiary) and loans and advances to agents and employees in the
ordinary course of business consistent with past practice and other than as to
such matters related to the investment portfolio of the Company or any
Subsidiary in the ordinary course of business consistent with past practice;

                  (vi) make any Tax election or settle or compromise any income
Tax liability unless such election, settlement or compromise (x) is required by
law and is supported by an opinion of counsel or (y) is in the ordinary course
of business consistent with past practice;

                  (vii) make any change in accounting methods, principles or
practices used by the Company or any of its Subsidiaries, except insofar as may
be required by law or regulation or by a change in applicable accounting
principles;


                                      -31-
<PAGE>

                  (viii) other than as previously disclosed to Buyer, adopt or
amend any Employee Benefit Plan (or any plan that would be a Employee Benefit
Plan if adopted) or enter into, adopt, extend, renew or amend any collective
bargaining agreement or other Contract with any labor organization, union or
association, except in each case as required by applicable law;

                  (ix) grant to any officer or employee any increase in
compensation or benefits, except in the ordinary course of business consistent
with past practice or as may be required under existing agreements;

                  (x) cancel any indebtedness for borrowed money owed to the
Company or any of its Subsidiaries or, other than in the ordinary course of
business consistent with past practice, waive any claims or rights of
substantial value;

                  (xi) sell, lease, license or otherwise dispose of (including
by way of reinsurance) any of its assets (other than investments), except in the
ordinary course of business consistent with past practice at fair value;

                  (xii) enter into any Contract, except any Contract described
in clause (i) of the definition thereof in the ordinary course of business
consistent with past practice;

                  (xiii) settle any claim, action or proceeding (other than any
claim under any insurance or reinsurance policy or contract) for an amount in
excess of $1,000,000 individually or $10,000,000 in the aggregate and, in the
case of any claim, action or proceeding under any insurance or reinsurance
policy or contract, for an amount in excess of $10,000,000 individually;

                  (xiv) make any capital expenditures in excess of $10 million
in the aggregate, other than in accordance with the capital expenditure plan
previously provided to Buyer relating to the development of Integra;

                  (xv) except as may be required pursuant to the Trademark
License, transfer (other than to the Company or a Subsidiary of the Company) any
right or interest of the Company or any of its Subsidiaries in any trade name,
trademark, service mark or logo;

                  (xvi) sell, lease or otherwise transfer any property or assets
to, or purchase, lease or otherwise acquire any property or assets from, or
otherwise engage in any transactions with, any of its affiliates, except (A)
transactions that are at prices and on terms and conditions not less favorable
to the Company or the applicable Subsidiary of the Company than could be
obtained on an arm's-length basis from unrelated third parties, (B) transactions
between or among the Company and its wholly-owned Subsidiaries


                                      -32-

<PAGE>

not involving any other affiliate or (C) transactions set forth in Section 4.9
of the Disclosure Schedule; or

                  (xvii) agree to take any of the foregoing actions.

                  (b) Prior to the Closing, CGNU and Sellers shall cause the
Company and the Company's Subsidiaries to consult with Buyer and Newco about
asset allocation guidelines in their investment portfolios, and will give
consideration to the views of Buyer and Newco with respect thereto. Further,
prior to the Closing, CGNU and Sellers shall cause the Company and its
Subsidiaries to consult with, and give consideration to the views of, Buyer and
Newco with respect to any material actions affecting their financial position or
operations or any change in accounting or reserving methods, principles or
practices which in either case the Company or any of its Subsidiaries may from
time to time consider taking. If any event or circumstance occurs or arises that
but for the operation of clauses (i) through (vii) of the definition of
"Material Adverse Effect" would have a Material Adverse Effect on the Company,
CGNU and Sellers shall cause the Company and its Subsidiaries from and after the
date on which such event or circumstance occurs or arises to cause the Company
to consult on a daily basis with a committee comprised of one or more
representatives of CGNU and one or more representatives of Buyer with respect to
any and all actions to be taken in response to such event or circumstance. Each
of CGNU and Buyer shall, as soon as practicable following any such event or
circumstance, appoint and cause to be made available appropriate persons to
serve on such committee. CGNU and Sellers acknowledge that any such consultation
shall not constitute a waiver by Buyer or Newco of any rights it may have under
this Agreement, and that Buyer and Newco shall not have any liability or
responsibility for any actions of CGNU, either Seller, the Company, its
Subsidiaries, any Excluded Subsidiary or any of their respective officers or
directors with respect to matters that are the subject of such consultations
unless Buyer expressly consents to such action in writing.

                  (c) None of Buyer, Holdco, Newco, CGNU or Sellers shall, nor
shall they permit any of their respective Subsidiaries to, voluntarily take any
action intended to result in any of the conditions set forth in Article VI not
being satisfied.

                  SECTION 4.2. ACCESS TO INFORMATION; CONFIDENTIALITY. CGNU and
Sellers shall cause the Company and its Subsidiaries to afford to Buyer and to
the officers, employees and other representatives of Buyer reasonable access
upon reasonable notice during normal business hours during the period prior to
the Closing Date to all of its properties, books, contracts, commitments and
records and, during such period, CGNU and Sellers shall cause the Company and
its Subsidiaries to furnish to Buyer such information concerning its business,
properties, financial


                                      -33-
<PAGE>

condition, operations and personnel as Buyer may from time to time reasonably
request, other than any such properties, books, contracts, commitments, records
and information that (i) are subject to an attorney-client or other legal
privilege which might be impaired by such disclosure or (ii) are subject to an
obligation of confidentiality. All requests for access or information pursuant
to this Section 4.2 shall be directed to one or more employees of CGNU seconded
to the Company in Boston. Promptly following the date hereof, CGNU shall second
an employee of CGNU to the Company in Boston. Without limiting the terms
thereof, the Confidentiality Agreement shall govern the obligations of Buyer and
its Representatives (as defined in the Confidentiality Agreement) with respect
to all information of any type furnished or made available to them pursuant to
this Section 4.2.

                  SECTION 4.3. COMMERCIALLY REASONABLE EFFORTS. Upon the terms
and subject to the conditions and other agreements set forth in this Agreement,
each of the parties agrees to use its commercially reasonable efforts to cause
the Closing to occur and to take, or cause to be taken, all actions, and to do,
or cause to be done, and to assist and cooperate with the other parties in
doing, all things necessary, proper or advisable to consummate and make
effective, in the most expeditious manner practicable, the transactions
contemplated by this Agreement.

                  SECTION 4.4. CONSENTS, APPROVALS AND FILINGS. CGNU, Sellers,
Buyer, Holdco and Newco will each use, and CGNU and Sellers will cause
applicable Insurance Subsidiaries to use, their commercially reasonable efforts,
and will, and CGNU and Sellers will cause applicable Insurance Subsidiaries to,
cooperate fully with each other (i) to comply as promptly as practicable with
all governmental requirements applicable to the transactions contemplated by
this Agreement and (ii) to obtain as promptly as practicable all necessary
permits, orders or other consents, approvals or authorizations of Governmental
Entities and consents or waivers of all third parties necessary in connection
with the consummation of the transactions contemplated by this Agreement. In
connection therewith, CGNU, Sellers, Buyer, Holdco and Newco will make and cause
their respective affiliates to make all legally required filings, including
filings with applicable Insurance Regulators, as promptly as practicable in
order to facilitate prompt consummation of the transactions contemplated by this
Agreement, and will provide and will cause their respective affiliates to
provide such information and communications to Governmental Entities as such
Governmental Entities may request. Each of the parties shall provide to the
other party copies of all applications or other communications to Governmental
Entities in connection with this Agreement a reasonable period of time in
advance of the filing or submission thereof and provide reasonable opportunity
to provide comments thereon. Each of the parties shall give prompt written


                                      -34-
<PAGE>

notice to the others if it or any of its affiliates receives any notice or other
communication from any Governmental Entity in connection with the transactions
contemplated by this Agreement, and, in the case of any such notice or
communication which is in writing, shall promptly furnish to the others a copy
thereof. If any Insurance Regulator requires that a hearing be held in
connection with any such approval, Buyer shall use its commercially reasonable
efforts to arrange for such hearing to be held reasonably promptly after the
notice that such hearing is required has been received by Buyer. Buyer shall, if
reasonably feasible, give to Sellers reasonable prior written notice of the time
and place when any meetings or other conferences (telephonic or otherwise) may
be held by it or any of its affiliates with any Insurance Regulator in
connection with the transactions contemplated by this Agreement, and Sellers
shall have the right, to the extent permitted and feasible and reasonable, to
have a representative or representatives attend or otherwise participate in any
such meeting or conference.

                  SECTION 4.5. CERTAIN NOTICES. CGNU and Sellers shall give
notice to Buyer and Newco, and Buyer and Newco shall give notice to Sellers, of
(i) any representation or warranty made by it contained in this Agreement
becoming untrue or inaccurate in any material respect or (ii) the failure by it
to comply with or satisfy in any material respect any covenant, condition or
agreement to be complied with or satisfied by it under this Agreement.

                  SECTION 4.6. PUBLIC ANNOUNCEMENTS. Buyer and CGNU, and their
respective affiliates, will consult with each other before issuing, and provide
each other the opportunity to review and comment upon, any press release or
other public statement with respect to the transactions contemplated by this
Agreement and shall not issue any such press release or make any such public
statement without the advance approval of the other party following such
consultation (such approval not to be unreasonably withheld or delayed), except
as may be required by applicable law or regulation, court process or by the
requirements of any securities exchange.

                  SECTION 4.7. CERTAIN CANADIAN SUBSIDIARIES. (a) Prior to the
Closing, the Company shall enter into a purchase agreement substantially in the
form of Exhibit A for the sale of all the outstanding shares of Pilot Insurance
Company ("Pilot") to CGNU or a Subsidiary of CGNU (other than the Company or any
of its Subsidiaries). Subject to the conditions set forth in such purchase
agreement, such sale shall be consummated immediately prior to the Closing for a
purchase price, and otherwise on the terms, as set forth in the foregoing
purchase agreement. Upon the closing of such sale, the Company will pay the cash
proceeds received by it in such sale, together with the Transferred Cash (as
defined in Section 4.15), to CGULLC in an amount up to but


                                      -35-
<PAGE>

not exceeding the then-outstanding principal amount of the Term Note, in
partial repayment of the outstanding principal amount of the Term Note.

                  (b) Prior to the Closing, CGU Asset Management, Inc. shall
enter into a purchase agreement substantially in the form of Exhibit B for the
sale of all the outstanding shares of CGU Investment Management Canada Limited
to CGU Group Canada Ltd. or another Subsidiary of CGNU (other than the Company
or any of its Subsidiaries). Subject to the conditions set forth in such
purchase agreement, such sale shall be consummated immediately prior to the
Closing for a purchase price, and otherwise on the terms, as set forth in the
foregoing purchase agreement.

                  SECTION 4.8. LIFE INSURANCE OPERATIONS. (a) Prior to the
Closing, the Company shall enter into a purchase agreement substantially in the
form of Exhibit C for the sale of all the outstanding shares of CGU Life
Insurance Company of America (which owns all the outstanding shares of CGU Life
Insurance Company of New York) and all the outstanding shares of CGU Annuity
Service Corporation to CGNU or another Subsidiary of CGNU (other than the
Company or any of its Subsidiaries). Subject to the conditions set forth in such
purchase agreement, such sale shall be consummated immediately prior to the
Closing for a purchase price and otherwise on the terms, as set forth in the
foregoing purchase agreement. Upon the closing of the foregoing Life Sub sales,
and immediately prior to the Closing, the Company will pay the cash proceeds
received by it in such sales to CGULLC in an amount up to but not exceeding the
then- outstanding principal amount of the Term Note, in partial repayment of the
outstanding principal amount of the Term Note.

                  SECTION 4.9. CERTAIN INTERCOMPANY AGREEMENTS AND ACCOUNTS. (a)
The actions described in Section 4.9 of the Disclosure Schedule shall be taken
with respect to the intercompany agreements and accounts set forth therein.

                  (b) Prior to the Closing, the Company shall enter into a
purchase agreement substantially in the form of Exhibit D for the sale of all
the outstanding shares of Societe Generale held by it on the date hereof to one
or more Subsidiaries of CGNU (other than the Company or any of its Subsidiaries)
to be identified in such purchase agreement. Subject to the conditions set forth
in such purchase agreement, such sale shall be consummated on October 16, 2000
at the price and otherwise on the terms, as set forth in the foregoing purchase
agreement. Immediately prior to the Closing, the Company will pay the cash
proceeds received by it in such sale to CGULLC in an amount up to but not
exceeding the then-outstanding principal amount of the Term Note, in partial
repayment of the outstanding principal amount of the Term Note.


                                      -36-
<PAGE>

                  (c) Prior to the Closing, those Insurance Subsidiaries which
hold shares of stock of Munich Re on the date hereof shall enter into a purchase
agreement substantially in the form of Exhibit E for the sale of all such shares
to one or more Subsidiaries of CGNU plc (other than the Company or any of its
Subsidiaries) to be identified in such purchase agreement. Subject to the
conditions set forth in such purchase agreement, such sale shall be consummated
on October 16, 2000 at the price and otherwise on the terms, as set forth in the
foregoing purchase agreement.

                  SECTION 4.10. USE OF NAMES. At the Closing, CGNU or an
affiliate of CGNU shall enter into a license in substantially the form set forth
in Exhibit F (the "Trademark License") with the Company and its Subsidiaries.

                  SECTION 4.11. POST-CLOSING COOPERATION. Following the Closing
Date, upon reasonable written notice, Buyer, Holdco, Newco and CGNU shall
furnish, and will cause their respective Subsidiaries to furnish, to each other
and any of their respective affiliates, and their respective counsel and
accountants, during normal business hours, reasonable access to such information
(including the books and records of the Company and its Subsidiaries) to the
extent that such access may be reasonably necessary for financial reporting and
accounting matters or to prepare documents required to be filed with
Governmental Entities. Buyer, Holdco and Newco will not, and will cause their
respective affiliates not to, dispose of, alter or destroy any such books and
records until the later of (i) seven years after the Closing Date and (ii) 30
days after giving notice to Sellers to permit them, at their expense, to
examine, duplicate or repossess such books and records. Notwithstanding the
foregoing, this Section 4.11 shall not apply to the Tax returns and other
materials covered by Section 9.7.

                  SECTION 4.12. FURTHER ASSURANCES. From time to time, as and
when requested by any party, each party shall execute and deliver, or cause to
be executed and delivered, all such documents and instruments and shall take, or
cause to be taken, all such further or other actions (in each case, subject to
Section 4.3), as may be reasonably necessary or desirable to consummate the
transactions contemplated by this Agreement.

                  SECTION 4.13. NONCOMPETITION. (a) For a period of two years
following the Closing Date, CGNU and Sellers shall not, and shall cause their
respective Subsidiaries (collectively, the "CGNU Entities") not to, without the
prior written consent of Buyer, (i) organize any new Restricted Subsidiary (as
defined below) or (ii) acquire any Restricted Subsidiary which had aggregate
gross written premiums from Restricted Businesses (as defined below) in the
United States in excess of $750 million in the last completed statutory year of
such Restricted Subsidiary


                                      -37-

<PAGE>

immediately preceding its date of acquisition (a "Competitor"), unless (A)
within 18 months (whether or not the two-year period referred to at the
beginning of this sentence expires during such 18 month period) following such
acquisition such Competitor is divested or reduces its aggregate gross premiums
written from Restricted Businesses in the United States to less than $175
million for the fiscal quarter ended immediately prior to the end of such 18
month period or (B) (x) such Restricted Subsidiary is part of an affiliated
group of companies which is acquired concurrently, (y) the ultimate acquired
parent of such acquired group is organized in a non-U.S. jurisdiction and (z)
any property/casualty business conducted by such acquired group is predominantly
conducted outside the United States. As used herein, "Restricted Subsidiary"
shall mean any Subsidiary of CGNU plc which (i) is an insurance company
organized under the laws of, or doing business in, any state of the United
States or the District of Columbia and (ii) writes Restricted Business.
"Restricted Business" shall mean those classes of small commercial or personal
lines primary property or casualty insurance currently written by the Insurance
Subsidiaries, but only to the extent written through independent agents or
brokers.

                  (b) For a period of two years following the Closing Date, CGNU
shall not, and shall cause its Subsidiaries not to, solicit for employment any
(i) managerial, technical or professional employee earning more than $80,000 per
year or (ii) any branch manager, in either case who is at the time employed by
the Company or any Subsidiary; PROVIDED, that the foregoing provision will not
prohibit any general solicitation of employment not specifically directed toward
employees of the Company or any Subsidiary.

                  (c) CGNU shall keep confidential and not use, and shall cause
its affiliates and its and their officers, directors, employees and advisors to
keep confidential and not use, all confidential information relating to the
Company and its Subsidiaries, and CGNU shall not provide, and shall cause its
Subsidiaries not to provide, any confidential information used primarily in the
business of the Company or any Subsidiary to any Restricted Subsidiary or to any
other third party, except in each of the foregoing cases as required by law or
regulation.

                  SECTION 4.14. BUYER GUARANTY. Buyer hereby unconditionally and
irrevocably guarantees the prompt and faithful performance and discharge of the
obligations, responsibilities, duties and liabilities of each of Newco and
Holdco under this Agreement. Buyer's guaranty constitutes a guaranty of
performance and payment when due and not of collection and is not conditional or
contingent upon any attempt to obtain performance by or to collect from, or
pursue or exhaust any rights or remedies against, Newco, Holdco, or any other
condition or contingency.


                                      -38-
<PAGE>

                  SECTION 4.15. RESTRUCTURING TRANSACTIONS. (a) Prior to, but in
no event more than 2 Business Days before, the Closing, Sellers shall cause CGU
Insurance Company, General Accident Insurance Company and CGU Insurance Company
of New Jersey (collectively the "Purchasers") to enter into a purchase agreement
with the Company, in a form comparable to Exhibits A through E and otherwise
reasonably satisfactory to Buyer and Sellers, pursuant to which the Purchasers
shall purchase from the Company, and the Company shall sell and/or contribute to
the Purchasers, all of the outstanding shares of each of Commercial Union
Insurance Company, The Employers' Fire Insurance Company, Northern Assurance
Company of America, American Employers' Insurance Company and Potomac Insurance
Company of Illinois (the "Transferred Subs") for consideration consisting of (i)
all of the outstanding shares of Pilot (the "Pilot Shares") and (ii) $235
million in cash (the "Transferred Cash"), with any excess of the value of the
Transferred Subs over the sum of the value of the Pilot Shares and the
Transferred Cash to be considered a capital contribution to the Purchasers.

                  (b) Immediately following the Closing, Buyer will contribute
as a capital contribution all the shares of the Subsidiaries of Buyer listed in
Section 4.15 of the Disclosure Schedule to the Company, which will in turn
contribute as a capital contribution such shares to the Purchasers.

                  (c) The transactions described in Sections 4.15(a) and (b) are
herein referred to as the "Restructuring Transactions."

                  SECTION 4.16.  FINANCING; SHAREHOLDER APPROVAL.

                  (a) (i) Buyer, Holdco and Newco each shall use its best
efforts to complete the Financings in accordance with the terms thereof;
PROVIDED that Buyer, Holdco and Newco may at their option prior to October 15,
2000 decrease the aggregate amount of the Buyer Financing by the aggregate
amount of any Additional Financing (in which event, the Buyer Financing as so
modified, together with the Newco Financing, the Holdco Financing and all
Additional Financing, shall be the "Financings"). "Additional Financing" means
any new written commitment to purchase equity in Holdco or Buyer, provided that
(A) Holdco has delivered to CGNU and Sellers a true, correct and complete copy
of such commitment and (B) if the terms of such commitment differ from the
Holdco Financing, such commitment has been approved by CGNU, which approval
shall not be unreasonably withheld or delayed. Notwithstanding the foregoing,
Buyer, Holdco and Newco shall not be restricted in any manner by the foregoing
provisions from obtaining commitments for additional financing that does not
qualify as Additional Financing. In the event that Buyer, Holdco and Newco are
unable to complete the Financings (including as a result of any shortfall in
cash at the Company), Buyer, Holdco


                                      -39-
<PAGE>

and Newco shall use their reasonable best efforts to obtain and complete
alternative financing for the transactions contemplated hereby, including
changing the mix, type or structure of the Financings and the receipt of
additional funds from existing or new sources.

                  (ii) Sellers shall use their reasonable best efforts to cause
the Insurance Subsidiaries to pay an aggregate of $378 million of dividends to
the Company on such date or dates between the date hereof and the earlier of
December 31, 2000 and the Closing Date as they in their judgment shall
determine.

                  (b) Buyer, Holdco and Newco each shall use its best efforts to
avoid the need for a Shareholder Approval in connection with the transactions
contemplated hereby, including by using its best efforts to complete the
Financings, or, in the event that Buyer, Holdco and Newco are unable to complete
the Financings, each shall use its reasonable best efforts to obtain such
alternative financing as can be arranged (without, to the extent practicable,
adversely affecting the consummation of the transactions contemplated hereby)
which would not require a Shareholder Approval; provided that, notwithstanding
the foregoing, Buyer, Holdco and Newco shall not be required to obtain financing
on terms less favorable to Buyer, Holdco and Newco than the Buyer Financing so
as to avoid the need for Shareholder Approval.

                  (c) If financing other than the Financings cannot be obtained
without the need for a Shareholder Approval, as soon as practicable following
the date of such determination:

                  (i) Buyer shall prepare and file with the SEC following
         consultation with Sellers a Proxy Statement relating to the Shareholder
         Approval (the "Proxy Statement"). CGNU and Sellers shall cause the
         Company to promptly provide to Buyer all information concerning itself,
         including audited and/or unaudited financial statements, as may be
         necessary to permit the preparation, filing and distribution of the
         Proxy Statement. Buyer will notify Sellers promptly of the receipt of
         any comments from the SEC or its staff and of any request by the SEC or
         its staff for amendments or supplements to the Proxy Statement or for
         additional information, will use its best efforts, after consultation
         with Sellers, to respond to any comments of the SEC or its staff and
         will supply Sellers with copies of all correspondence between Buyer or
         any of its representatives, on the one hand, and the SEC or its staff,
         on the other hand, with respect to the Proxy Statement. Buyer shall use
         its best efforts to cause the Proxy Statement to be mailed to
         shareholders as promptly as practicable;


                                      -40-
<PAGE>

                  (ii) Buyer will take all action necessary in accordance with
         applicable law and its Articles of Incorporation and Bye- laws (or
         comparable documents) to convene a meeting of its shareholders to
         consider and vote upon the approval of the Vote Issuance;

                  (iii) Buyer will, through its Board of Directors, recommend to
         its shareholders approval of the foregoing matters; and

                  (iv) the Board of Directors of Buyer will vote or cause to be
         voted all shares over which it holds a proxy or otherwise has the right
         to vote in favor of the Vote Issuance and against any action that would
         be reasonably likely to result in any condition to the obligations
         hereunder of Buyer, Holdco or Newco not being satisfied.

                  (d) Nothing contained in Section 4.16(c) shall prohibit Buyer
from making any disclosure to Buyer's shareholders if, in the good faith
judgment of the Board of Directors of Buyer, after consultation with outside
counsel, failure to so disclose would violate its obligations under applicable
law.


                                    ARTICLE V

                                EMPLOYEE MATTERS

                  SECTION 5.1. SEVERANCE BENEFITS. For a period of two years
following the Closing Date, Buyer shall provide, or cause the Company or a
Subsidiary to provide, severance benefits for employees of the Company or its
Subsidiaries whose employment is terminated during such period which are at
least equal to the severance benefits referred to in Section 3.1(j) of the
Disclosure Schedule.

                  SECTION 5.2. CERTAIN CONTRACTS. Following the Closing Date,
Buyer shall honor, or shall cause the Company or a Subsidiary to honor, all
individual employment and severance agreements in effect for employees (or
former employees) of the Company or its Subsidiaries as of the date hereof, all
as referred to in Section 3.1(j) of the Disclosure Schedule.

                  SECTION 5.3. CREDIT FOR SERVICE. On and after the Closing
Date, Buyer shall provide, or cause to be provided, to each Transferred Employee
under each Company Employee Benefit Plan and each Buyer Employee Benefit Plan
credit for purposes of eligibility to participate and vesting for full and
partial years of service with Sellers or their respective affiliates (including
the Company or any Subsidiary thereof) performed at any time prior to the
Closing Date, except where such crediting results in the duplication of
benefits.


                                      -41-
<PAGE>

                  SECTION 5.4. EMPLOYEE BENEFIT PLANS. For a period of 12 months
following the Closing Date, (i) the benefits and coverages provided to
Transferred Employees by the Company, Buyer or their respective Subsidiaries or
other affiliates shall be not less favorable in the aggregate than those
provided to such Transferred Employees immediately prior to the Closing Date and
(ii) base annual compensation paid to each Transferred Employee on and after the
Closing Date shall not be less that the base annual compensation paid to such
Transferred Employee on the date immediately preceding the Closing Date.

                  SECTION 5.5. PREEXISTING CONDITIONS, EXCLUSIONS AND WAITING
PERIODS; DEDUCTIBLES. The Company, Buyer and their respective Subsidiaries and
other affiliates shall (a) waive all limitations as to preexisting conditions,
exclusions and waiting periods with respect to participation and coverage
requirements applicable to Employees under any Buyer Employee Benefit Plans that
are welfare plans, funds or programs (within the meaning of Section 3(1) of
ERISA) which replace any of the Company Employee Benefit Plans that are welfare
plans, funds or programs in which such Employees participate, other than
limitations or waiting periods that are already in effect with respect to such
Employees and that have not been satisfied as of the Closing Date and (b)
provide each Employee with credit for any co-payments and deductibles paid by
such Employee prior to the Closing Date for purposes of satisfying any
applicable deductible or out-of-pocket requirements under any welfare plans,
funds or programs in which Employees are eligible to participate after the
Closing Date.

                  SECTION 5.6. COBRA. Buyer shall be, or shall cause the Company
to be, responsible and liable for providing the appropriate COBRA notices and
coverages to Transferred Employees who experience a COBRA "qualifying event"
after the Closing. Notwithstanding any provision of this Agreement to the
contrary, Buyer shall be, or shall cause the Company to be, responsible and
liable for providing, or continuing to provide, health care continuation
coverage as required under COBRA with respect to any individual who experienced
a COBRA "qualifying event" before the Closing under any Company Employee Benefit
Plan subject to COBRA.

                  SECTION 5.7. FILINGS AND RECORDS. CGNU, Buyer, Newco and the
Company shall cooperate in (a) making all filings required under the Code or
ERISA and any applicable securities laws with respect to the Employee Benefit
Plans that cover Employees, (b) implementing all appropriate communications with
participants, (c) maintaining and transferring appropriate records and (d)
taking all such other actions as may be necessary and appropriate to implement
the provisions of this Article V. Following the Closing, CGNU, Buyer, Newco and
the Company shall cooperate fully with one another in providing records
regarding


                                      -42-

<PAGE>

the employment of, and the benefits provided to, all individuals who are or were
employees.


                                   ARTICLE VI

                              CONDITIONS PRECEDENT

                  SECTION 6.1. CONDITIONS TO EACH PARTY'S OBLIGATIONS. The
respective obligations of each party to effect the purchase and sale of the
Shares and the other actions to be taken at the Closing are subject to the
satisfaction or waiver by each party on or prior to the Closing Date of the
following conditions:


                  (a) NO INJUNCTIONS OR RESTRAINTS. No temporary restraining
order, preliminary or permanent injunction or other order issued by any court of
competent jurisdiction and no statute, rule or regulation of any Governmental
Entity preventing the consummation of the purchase and sale of the Shares or any
of the other transactions contemplated hereby shall be in effect; PROVIDED,
HOWEVER, that the party invoking this condition shall have used commercially
reasonable efforts to have any such order or injunction vacated.

                  (b) HSR ACT. The waiting period (and any extension thereof)
applicable to the transactions contemplated hereby under the HSR Act shall have
been terminated or shall have otherwise expired.

                  (c) SHAREHOLDER APPROVAL. The Shareholder Approval, if
required, shall have been obtained.

                  SECTION 6.2. CONDITIONS TO OBLIGATIONS OF BUYER, HOLDCO AND
NEWCO. The obligations of Buyer, Holdco and Newco to effect the purchase and
sale of the Shares and the other actions to be taken at the Closing are further
subject to the satisfaction or waiver by Buyer and Newco on or prior to the
Closing Date of the following conditions:

                  (a) REPRESENTATIONS AND WARRANTIES. The representations and
warranties of CGNU and Sellers set forth in this Agreement shall be true and
correct both when made and as of the Closing Date as though made on and as of
the Closing Date (except to the extent any such representation or warranty
speaks as of an earlier date, in which event such representation or warranty
shall be true and correct as of such date), except where the failure of such
representations and warranties to be true and correct (without giving effect to
any limitation as to materiality or Material Adverse Effect contained therein)
does not have, and would not reasonably be expected to have, individually or in
the aggregate, a Material Adverse Effect on


                                      -43-
<PAGE>

the Company; and Buyer and Newco shall have received a certificate signed on
behalf of CGNU and each Seller by an executive officer of CGNU and each Seller
to the effect set forth in this paragraph.

                  (b) PERFORMANCE OF OBLIGATIONS OF EACH SELLER. CGNU and each
Seller shall have performed in all material respects all obligations required to
be performed by it under this Agreement on or prior to the Closing Date, and
Buyer and Newco shall have received a certificate signed on behalf of CGNU and
each Seller by an executive officer of CGNU and each Seller to such effect.

                  (c) PRECLOSING TRANSACTIONS. The Preclosing Transactions shall
have occurred on the terms contemplated by this Agreement.

                  (d) MATERIAL ADVERSE EFFECT. Since December 31, 1999, there
shall not have occurred any event or change that, individually or in the
aggregate, has had or would reasonably be expected to have a Material Adverse
Effect on the Company.

                  (e) FIRPTA CERTIFICATE. Each Seller shall have delivered to
Buyer at the Closing a certificate, in form and substance satisfactory to Buyer,
certifying that the purchase and sale of the Shares is exempt from withholding
pursuant to the Foreign Investment in Real Property Tax Act.

                  (f) FINANCING. Buyer, Holdco and Newco shall have received
proceeds from sources of financing in an amount which is sufficient to pay the
Purchase Price, to repay in full the then outstanding principal and interest on
the Term Note and to pay all fees and expenses required to be paid by Buyer,
Holdco or Newco in connection with the transactions contemplated by this
Agreement.

                  (g) GOVERNMENTAL CONSENTS. All filings required to be made
prior to the Closing Date with, and all consents, approvals, permits and
authorizations required to be obtained prior thereto from, or the expiration of
applicable waiting periods imposed by, Governmental Entities, including those
set forth in Sections 3.1(e) and 3.2(b) of the Disclosure Schedule, in
connection with the consummation of the transactions contemplated hereby shall
have been made or obtained or shall have occurred, and no such consents,
approvals, permits or authorizations shall contain any materially adverse
conditions, restrictions or requirements (not including any such condition,
restriction or requirement customarily imposed by such Governmental Entities in
connection with similar transactions).


                  SECTION 6.3. CONDITIONS TO OBLIGATIONS OF EACH SELLER. The
obligations of each Seller to effect the purchase


                                      -44-
<PAGE>

and sale of the Shares and the other actions to be taken at the Closing are
further subject to the satisfaction or waiver by such Seller on or prior to the
Closing Date of the following conditions:

                  (a) REPRESENTATIONS AND WARRANTIES. The representations and
warranties of Buyer and Newco set forth in this Agreement shall be true and
correct both when made and as of the Closing Date as though made on and as of
the Closing Date (except to the extent any such representation or warranty
speaks as of an earlier date, in which event such representation or warranty
shall be true and correct as of such date), except where the failure of such
representations and warranties to be true and correct (without giving effect to
any limitation as to materiality or Material Adverse Effect contained therein)
does not have, and would not reasonably be expected to have, individually or in
the aggregate, a Material Adverse Effect on Buyer, Holdco or Newco; and CGNU and
Sellers shall have received a certificate signed on behalf of each of Buyer and
Newco by an executive officer of each of Buyer and Newco to the effect set forth
in this paragraph.

                  (b) PERFORMANCE OF OBLIGATIONS OF BUYER, HOLDCO AND NEWCO.
Buyer, Holdco and Newco each shall have performed in all material respects all
obligations required to be performed by it under this Agreement on or prior to
the Closing Date, and CGNU and Sellers shall have received a certificate signed
on behalf of each of Buyer and Newco by an executive officer of each of Buyer
and Newco to such effect.

                  (c) GOVERNMENTAL CONSENTS. All filings required to be made
prior to the Closing Date with, and all consents, approvals, permits and
authorizations required to be obtained prior thereto from, or the expiration of
applicable waiting periods imposed by, Governmental Entities, including those
set forth in Sections 3.1(e) and 3.2(b) of the Disclosure Schedule, in
connection with the consummation of the transactions contemplated hereby shall
have been made or obtained or shall have occurred and no such consents,
approvals, permits or authorizations shall contain any materially adverse
conditions, restrictions or requirements affecting CGNU or any affiliate (other
than the Company or any Subsidiary), not including any such condition,
restriction or requirement customarily imposed by such Governmental Entities in
connection with similar transactions.


                                   ARTICLE VII

                   SURVIVAL OF REPRESENTATIONS AND WARRANTIES

                  SECTION 7.1. SURVIVAL OF REPRESENTATIONS AND WARRANTIES. All
representations and warranties contained in this


                                      -45-
<PAGE>

Agreement or in the closing certificates delivered pursuant to Sections 6.2(a),
6.2(b), 6.3(a) and 6.3(b) shall survive the Closing solely for purposes of
Sections 8.1(a) and 8.1(b) hereof and shall terminate and expire upon completion
of the audit of the financial statements of the Company for the year ended
December 31, 2001, but in no event later than May 15, 2002; PROVIDED, that the
representations and warranties in Section 3.1(k) shall terminate and expire on
the Closing Date. All covenants and agreements contained in this Agreement, to
the extent that the foregoing are to have effect or be performed after the
Closing, shall survive the Closing in accordance with their terms.

                                  ARTICLE VIII

                                 INDEMNIFICATION

                  SECTION 8.1. OBLIGATION TO INDEMNIFY. (a) Subject to the
limitations set forth in this Article VIII, CGNU and Sellers jointly and
severally agree to indemnify and hold harmless Buyer, Holdco and Newco (without
duplication of recovery) from and against all losses, liabilities, claims,
expenses (including reasonable attorneys' fees and expenses of outside counsel)
and damages ("Losses") to the extent arising from or related to (i) any breach
of the representations and warranties of CGNU and Sellers contained in this
Agreement or in the closing certificates delivered pursuant to Sections 6.2(a)
and (b) (except that CGNU and Sellers shall not have any liability for a breach
of the representations and warranties in Section 3.1(k)), (ii) any breach of any
of the covenants and agreements of CGNU and Sellers contained in this Agreement
or (iii) the transactions described in Sections 4.7, 4.8 and 4.9 of this
Agreement; PROVIDED, HOWEVER, that CGNU and Sellers shall not have any liability
under clause (i) above (other than with respect to fraud or a breach of Sections
3.1(b), 3.1(c), 3.1(d), clause (ii) of Section 3.1(i), the last sentence of
Section 3.1(f) or the second sentence of Section 3.1(g)) unless the aggregate of
all Losses for which CGNU and Sellers would, but for this proviso, be liable
exceeds on a cumulative basis an amount equal to 2% of the Purchase Price (the
"Indemnification Basket"), and then only to the extent of any such excess; and
PROVIDED, FURTHER, HOWEVER, that CGNU and Sellers shall not have any liability
under clause (i) above for any individual items where the Loss relating thereto
is less than $200,000 and such items shall not be aggregated for purposes of the
first proviso to this Section 8.1(a) (other than items arising out of the same
breach or the same series of related transactions where the Loss for such items
in the aggregate exceeds $200,000). In any event, the maximum amount for which
CGNU and Sellers shall be liable in the aggregate under Section 8.1(a)(i) (other
than with respect to fraud or a breach of Sections 3.1(b), 3.1(c), 3.1(d) or
clause


                                      -46-
<PAGE>

(ii) of Section 3.1(i)) shall not exceed 20% of the Purchase Price (the
"Indemnification Cap"). For purposes of Section 8.1(a)(i), the representations
and warranties of CGNU and Sellers contained in this Agreement (other than in
clauses (i) and (iv) of Section 3.1(i) and in the phrase "in all material
respects" as used in the last sentence of Section 3.1(f) and in the second
sentence of Section 3.1(g)) shall be deemed not to be qualified by any
limitation as to materiality or to whether or not any such breach results or may
result in a Material Adverse Effect on the Company. CGNU and Sellers shall have
no liability under this Section 8.1(a) for any Losses to the extent arising from
or relating to any Excluded Cause or, for the avoidance of doubt, any of the
matters described in the last sentence of Section 3.1(n). CGNU and Sellers may
satisfy any indemnification obligation under this Agreement, at their option, by
(x) payment in cash or (y) if the Holdco Notes are still outstanding, waiver of
part or all of the principal or interest payable to Sellers under the Holdco
Notes in an amount equal to such indemnification obligation, or, if the Holdco
Notes have been settled in whole or in part by delivery of equity securities, by
delivery to the Indemnified Party of some or all of such equity securities,
valued for this purpose at the values assigned them for purposes of such
settlement (subject to appropriate adjustment for any stock splits or other
events described in the antidilution provisions of the Holdco Notes occurring
after such settlement).

                  (b) Subject to the limitations set forth in this Article VIII,
Buyer, Holdco and Newco jointly and severally agree to indemnify and hold
harmless CGNU and Sellers from and against (i) (x) decreases in the value of the
Holdco common stock or Buyer Common Stock received by Sellers in satisfaction of
the Holdco Note or (y) actual out-of-pocket Losses paid by CGNU or either Seller
to a third party, provided that CGNU and Sellers may not recover under this
clause (y) for a decrease in the value of the Holdco common stock or Buyer
Common Stock, in the case of either (x) or (y) to the extent arising from or
related to any breach of the representations and warranties of Buyer and Newco
contained in this Agreement or in the closing certificates delivered pursuant to
Sections 6.3(a) and (b), (ii) all Losses to the extent arising from or relating
to any breach of any of the covenants and agreements of Buyer, Holdco or Newco
contained in this Agreement or (iii) all Losses to the extent arising from or
relating to the Restructuring Transactions (excluding for purposes of this
clause (iii) any Losses to the extent arising from the negligence or misconduct
of, or breach of this Agreement by, CGNU, either Seller or the Company);
PROVIDED, HOWEVER, that Buyer, Holdco and Newco shall not have any liability
under clause (i) above (other than with respect to fraud or a breach of Section
3.2(c), the third sentence of Section 3.2(e), the second sentence of Section
3.2(f), clause (v) of Section 3.2(i) and the first five sentences of Section
3.2(b)) unless the aggregate of all Losses for which Buyer, Holdco and Newco
would, but for this


                                      -47-

<PAGE>

proviso, be liable exceeds on a cumulative basis an amount equal to $4 million,
and then only to the extent of any such excess; and PROVIDED, FURTHER, HOWEVER,
that Buyer, Holdco and Newco shall not have any liability under clause (i) above
for any individual items where the Loss relating thereto is less than $200,000
and such items shall not be aggregated for purposes of the first proviso to this
Section 8.1(b) (other than items arising out of the same breach or the same
series of related transactions where the Loss for such items in the aggregate
exceeds $200,000). In any event, the maximum amount for which Buyer, Holdco and
Newco shall be liable in the aggregate under Section 8.1(b)(i) (other than with
respect to fraud or a breach of Section 3.2(c) and the first five sentences of
Section 3.2(b)) shall not exceed $42,000,000. For purposes of Section 8.1(b)(i),
the representations and warranties of Buyer and Newco contained in this
Agreement (other than in Section 3.2(h) and in the phrases "fairly presented in
all material respects" in Section 3.2(e) and "in all material respects" in
Section 3.2(f)) shall be deemed not to be qualified by any limitation as to
materiality or to whether or not any such breach results or may result in a
Material Adverse Effect on the Buyer. Buyer, Holdco and Newco shall have no
liability under this Section 8.1(b) for any Losses to the extent arising from or
relating to any Excluded Cause described in clauses (i) or (ii) of the
definition of "Material Adverse Effect."

                  SECTION 8.2. INDEMNIFICATION PROCEDURES. (a) The party
seeking indemnification under Section 8.1 (the "Indemnified Party") agrees to
give the party from which such indemnification is sought (the "Indemnifying
Party") notice in writing of the assertion of any claim or demand made by, or
an action, proceeding or investigation instituted by, any person not a party
to this Agreement (a "Third Party Claim") in respect of which indemnity may
be sought under such Section promptly after receipt by such Indemnified Party
of written notice of the Third Party Claim; PROVIDED, HOWEVER, that failure
to give such notice shall not affect the indemnification provided hereunder
except to the extent the Indemnifying Party shall have been actually
prejudiced as a result of such failure (except that the Indemnifying Party
shall not be liable for any expenses incurred during the period in which the
Indemnified Party failed to give such notice). Thereafter, the Indemnified
Party shall deliver to the Indemnifying Party, promptly after the Indemnified
Party's receipt thereof, copies of all notices and documents (including court
papers) received by the Indemnified Party relating to the Third Party Claim.

                  (b) If a Third Party Claim is made against an Indemnified
Party, the Indemnifying Party will be entitled to participate in the defense
thereof and, if it so chooses, to assume the defense thereof with counsel
selected by the Indemnifying Party; PROVIDED, HOWEVER, that such counsel is not


                                      -48-
<PAGE>

reasonably objected to by the Indemnified Party. Should the Indemnifying Party
so elect to assume the defense of a Third Party Claim, the Indemnifying Party
shall be deemed to have acknowledged liability for any Losses arising from such
Third Party Claim; PROVIDED that such acknowledgment shall not affect or cause
such party to lose the benefits of any limitation on indemnification set forth
in this Article VIII. The Indemnifying Party will not as long as it conducts
such defense be liable to the Indemnified Party for legal expenses subsequently
incurred by the Indemnified Party in connection with the defense thereof unless
the Indemnified Party shall have been advised by counsel that there are actual
or potential conflicts of interest between the Indemnifying Party and the
Indemnified Party (in which case the Indemnifying Party shall be required to pay
the reasonable fees and expenses of not more than one separate counsel, who
shall be reasonably acceptable to the Indemnifying Party, for all Indemnified
Parties collectively). If the Indemnifying Party assumes such defense, the
Indemnified Party shall have the right to participate in the defense thereof and
to employ counsel, at its own expense, separate from the counsel employed by the
Indemnifying Party, it being understood that the Indemnifying Party shall
control such defense. The Indemnifying Party shall be liable for the fees and
expenses of counsel employed by the Indemnified Party for any period during
which the Indemnifying Party has not assumed the defense thereof (other than
during any period in which the Indemnified Party shall have not yet given notice
of the Third Party Claim as provided above). If the Indemnifying Party chooses
to defend or prosecute any Third Party Claim, all of the parties hereto shall
cooperate in the defense or prosecution thereof. Such cooperation shall include
the retention and (upon the Indemnifying Party's request) the provision to the
Indemnifying Party of records and information which are reasonably relevant to
such Third Party Claim, and making employees available at no cost on a mutually
convenient basis to provide additional information and explanation of any
material provided hereunder. The Indemnifying Party shall not settle, compromise
or discharge any Third Party Claim by agreeing to any remedy affecting the
Indemnified Party or any Subsidiary (other than any payment of money that is
entirely paid by the Indemnifying Party) without the prior written consent of
the Indemnified Party, not to be unreasonably withheld in the case of any remedy
involving payment of money only. Whether or not the Indemnifying Party shall
have assumed the defense of a Third Party Claim, the Indemnified Party shall not
admit any liability with respect to, or settle, compromise or discharge, such
Third Party Claim without the Indemnifying Party's prior written consent (which
consent shall not be unreasonably withheld).

                  SECTION 8.3. TERMINATION; INSURANCE. (a) The indemnities
provided in this Agreement shall survive the Closing; PROVIDED, HOWEVER, that
the indemnities provided under Sections 8.1(a)(i) and 8.1(b)(i) shall terminate
when the applicable


                                      -49-
<PAGE>

representation or warranty terminates pursuant to Article VII, except as to any
item as to which the person to be indemnified shall have, before the expiration
of the applicable period, previously made a claim by delivering a notice
(stating in reasonable detail the basis of such claim) to the Indemnifying
Party. After the Closing, the indemnities provided in Sections 8.1(a) and 8.1(b)
shall be the sole and exclusive remedy at law or in equity for any breach of
representation, warranty, covenant or agreement (other than those covenants and
agreements which survive the Closing) or other claim arising out of this
Agreement or the transactions contemplated hereby.

                  (b) The amount of any Losses for which indemnification is
provided under this Agreement shall be net of any amounts recovered or actually
recoverable by the Indemnified Party under insurance policies with respect to
such Losses and shall be (i) increased to take account of any Tax cost incurred
(grossed up for such increase) by the Indemnified Party arising from the receipt
of indemnity payments hereunder and (ii) reduced to take account of any Tax
benefit realized by the Indemnified Party arising from the incurrence or payment
of any such Losses. Such Tax cost or Tax benefit, as the case may be, shall be
computed for any year using the Indemnified Party's actual Tax liability with
and without (i) the receipt of any indemnification payments made pursuant to
this Agreement and (ii) the incurrence or payment of any Losses for which
indemnification is provided under this Agreement in such year. In the event that
the Indemnified Party actually realizes a Tax cost or Tax benefit for one or
more years subsequent to the year in which the indemnity payment is made, the
Indemnifying Party shall pay the amount of such Tax cost or the Indemnified
Party shall pay the amount of such Tax benefit, as the case may be, in such
subsequent year(s).

                  Section 8.4. TAX INDEMNIFICATION. Notwithstanding anything to
the contrary in this Agreement, the rights and obligations of the parties with
respect to indemnification for any and all Tax matters shall be governed by
Article IX hereof, and shall not be subject to this Article VIII, except for the
provisions of Section 8.1(b)(iii) and the provisions of Section 8.3(b).


                                   ARTICLE IX

                                   TAX MATTERS

                  SECTION 9.1. INDEMNITY. (a) CGNU and Sellers agree to
indemnify and hold harmless Buyer, Newco, Holdco, the Company and each
Subsidiary against the following Taxes (except (x) for any Taxes set forth in
Section 9.1 of the Disclosure Schedule, (y) to the extent reserved for on the
May 31, 2000 Balance Sheet, and (z) any Taxes resulting from any Restructuring
Transaction


                                      -50-
<PAGE>

described in Section 4.15) and, except as otherwise provided in Section 9.5,
against any costs or expenses (including reasonable attorneys' fees Expenses"):
(i) Taxes imposed on the Company or any Subsidiary with respect to Taxable
periods of such Person ending on or before May 31, 2000; (ii) with respect to
Taxable periods beginning before May 31, 2000 and ending after May 31, 2000,
Taxes imposed on the Company or any Subsidiary which are allocable, pursuant to
Section 9.1(b), to the portion of such period ending on May 31, 2000; (iii)
Taxes of the Sellers or an affiliate of the Sellers (other than the Company or
any Subsidiary) imposed on the Company or any Subsidiary for any Taxable period
or portion thereof ending on or before the Closing Date by reason of Treasury
Regulation Section 1.1502-6 (or any comparable provision under state, local or
foreign law); and (iv) Taxes on any income of the Life Subs for the period after
May 31, 2000, which is included in any Tax return of the Company Consolidated
Tax Group and not otherwise paid by the Life Subs or the Sellers calculated on a
separate return basis. Buyer, Newco and Holdco agree to indemnify and hold
harmless CGNU and Sellers for all Taxes of the Company and each Subsidiary and
associated expenses not allocated to Sellers pursuant to the first sentence
hereof. Notwithstanding any other provision of this Agreement, Buyer shall be
solely responsible for any Taxes resulting from the Restructuring Transactions
and the Sellers shall have no indemnification obligation with respect thereto.

                  (b) In the case of Taxes that are payable with respect to a
Taxable period that begins before May 31, 2000 and ends after May 31, 2000, the
portion of any such Tax that is allocable to the portion of the period ending on
May 31, 2000 shall be:

                  (i) in the case of Taxes that are either (A) based upon or
related to income or receipts, or (B) imposed in connection with any sale or
other transfer or assignment of property (real or personal, tangible or
intangible) (other than conveyances pursuant to this Agreement, as provided
under Section 9.8), deemed equal to the amount which would be payable if the
Taxable period ended with May 31, 2000; and

                  (ii) in the case of Taxes imposed on a periodic basis with
respect to the assets of the Company or any Subsidiary, or otherwise measured by
the level of any item, deemed to be the amount of such Taxes for the entire
period (or, in the case of such Taxes determined on an arrears basis, the amount
of such Taxes for the immediately preceding period), multiplied by a fraction
the numerator of which is the number of calendar days in the period ending on
May 31, 2000 and the denominator of which is the number of calendar days in the
entire period.


                                      -51-
<PAGE>

                  SECTION 9.2. RETURNS AND PAYMENTS. Sellers shall prepare and
file or otherwise furnish in proper form to the appropriate Taxing authority (or
cause to be prepared and filed or so furnished) in a timely manner all Tax
returns relating to the Company and the Subsidiaries that are due on or before
the Closing Date and cause to be paid all Taxes shown as due thereon (and Buyer
shall do the same, including making or causing to be made payments shown as due,
with respect to any Tax return for the Company or the Subsidiaries due after the
Closing Date). Tax returns of the Company and the Subsidiaries not yet filed for
any Taxable period that begins before the Closing Date shall be prepared in a
manner consistent with past practices employed with respect to the Company and
the Subsidiaries (except to the extent counsel for Sellers or counsel for the
Company renders a legal opinion that there is no reasonable basis in law
therefor or determines that a Tax return cannot be so prepared and filed without
being subject to penalties). With respect to any Tax return required to be filed
by Buyer or Sellers with respect to the Company and the Subsidiaries and as to
which an amount of Tax is allocable to the other party under Section 9.1(b), the
filing party shall provide the other party and its authorized representatives
with a copy of such completed Tax return and a statement certifying the amount
of Tax shown on such Tax return that is allocable to such other party pursuant
to Section 9.1(b) (the "Tax Allocation Statement"), together with appropriate
supporting information and schedules at least 45 days (or such other time period
as is agreed by the parties, such agreement not to be unreasonably withheld)
prior to the due date (including any extension thereof) for the filing of such
Tax return, and such other party and its authorized representatives shall have
the right to review and comment on such Tax return and Tax Allocation Statement
prior to the filing of such Tax return. If after such review, the reviewing
party disagrees with any item on such Tax return or Tax Allocation Statement and
the parties cannot agree as to the appropriate treatment or calculation thereof,
the issue in dispute shall be reviewed by an independent internationally
recognized accounting firm (the "Tax Referee") agreed to by the parties. If the
parties are unable to agree upon an independent internationally recognized
accounting firm, Buyer and Sellers shall each have the right to request that the
American Arbitration Association appoint such a firm (provided that such firm
has not performed any services for any party with respect to the transaction
contemplated by this Agreement and is not the customary Tax advisor to any
party). Each party agrees to execute, if requested by the Tax Referee, a
reasonable engagement letter. All fees and expenses relating to the work, if
any, to be performed by the Tax Referee shall be borne pro rata by Sellers and
Buyer in proportion to the allocation of the dollar amount of the items as to
which there is a disagreement between Sellers and Buyer made by the Tax Referee
such that the prevailing party pays a lesser proportion of the fees and
expenses. The Tax Referee shall determine in accordance with the


                                      -52-

<PAGE>

terms of this paragraph the appropriate treatment or calculation of any items as
to which there is a disagreement. The findings of the Tax Referee shall be
binding on all parties, and the Tax return shall be completed and filed in a
manner consistent with such findings. For purposes of this Section 9.2, all
Taxes for Taxable periods or portions thereof beginning after August 31, 2000 up
and including the Closing Date shall be treated as being allocable to Buyer but
shall be paid by the Company or its Subsidiaries. Any amounts allocated to the
non-filing party on the Tax Allocation Statement that are required to be paid by
the non-filing party shall be paid to the filing party in accordance with the
provisions of Section 9.6 hereof.

                  SECTION 9.3. TAX BENEFITS. Any indemnifiable Taxes payable by
an indemnifying party under this Article IX shall be reduced by the present
value of (a) any benefit that was (or will) be realized by the indemnified
party, or any affiliate thereof, resulting from any refund, credit or reduction
in otherwise required Tax payments (including any interest payable thereon)
attributable to any item that generated or that relates to the indemnified Tax
and (b) any Tax savings (including any refund, credit or other Tax reduction)
attributable to the deductibility of the indemnified party's or its affiliate's
payment of any Tax Losses for which it receives an indemnification payment. Such
present value shall be computed as of the first date on which the right to the
refund, credit or other Tax reduction arises or otherwise becomes available to
be utilized (i) using the maximum marginal rate of the relevant Tax payable by
the indemnified party for any Tax year in which such savings or refund were or
will be available after first reflecting all other items of income, gain,
deduction, loss or credit for such period, and (ii) using a discount rate of 6%
per annum. To the extent that the parties cannot agree whether any Tax savings
exists (or will be realized) or on the appropriate treatment of any Tax savings,
such disagreement shall be resolved by the Tax Referee (selected, and all fees
and expenses related thereto borne by the parties, in a manner consistent with
that provided in Section 9.2). Sellers shall be entitled to the benefit of any
indemnification right or payment (including any insurance or similar payment),
other than an indemnification payment made pursuant to this Agreement, available
to or received by Buyer, the Company, or any affiliate of either, in connection
with a Tax Loss for which CGNU and Sellers have an obligation to indemnify
Buyer. As used herein, "Tax Losses" means all Taxes and Contest Expenses for
which Sellers may be obligated to indemnify Buyer under Section 9.1.

                  SECTION 9.4. TAX REFUNDS. Any Tax refund (including any
interest with respect thereto) relating to the Company or any Subsidiary for
Taxes paid for any Taxable period or portion thereof prior to May 31, 2000 shall
be the property of Sellers, and if received by Buyer or the Company or any
Subsidiary shall


                                      -53-
<PAGE>

be paid over promptly to Sellers; PROVIDED, HOWEVER, that any Tax refund that
relates to a carryback of a Company or Subsidiary loss from a Taxable period or
portion thereof beginning after May 31, 2000 and that would not otherwise have
been received by Sellers or an affiliate thereof shall be the property of Buyer.

                  SECTION 9.5. CONTESTS. (a) After the Closing, Buyer shall
promptly notify Sellers in writing of the commencement of any Tax audit or
administrative or judicial proceeding or of any demand or claim on Buyer, the
Company or any of its Subsidiaries which, if determined adversely to the
taxpayer, would be grounds for indemnification under this Article IX. Such
notice shall contain factual information (to the extent known to Buyer, the
Company or any of its Subsidiaries) describing the asserted Tax liability in
reasonable detail and shall include copies of any notice or other document
received from any Taxing authority in respect of any such asserted Tax
liability. If Buyer fails to give Sellers prompt notice of an asserted Tax
liability as required by this Section 9.5, then (i) if Sellers are precluded by
the failure to give prompt notice from contesting the asserted Tax liability in
either the administrative or the judicial forum, then CGNU and Sellers shall not
have any obligation to indemnify for any Tax Losses arising out of such asserted
Tax liability, and (ii) if Sellers are not so precluded from contesting but such
failure to give prompt notice results in a detriment to CGNU or Sellers, then
any amount which CGNU or Sellers are otherwise required to pay Buyer, Newco or
Holdco pursuant to Section 9.1 with respect to such liability shall be reduced
by the amount of such detriment.

                  (b) Prior to the Closing Date, Sellers shall control any
audit, claim for refund or administrative or judicial proceeding involving any
asserted Tax liability (any such audit, claim for refund or proceeding relating
to an asserted Tax liability is referred to herein as a "Contest"). After the
Closing Date, in the case of a Contest that relates to a Tax return (or any item
relating thereto or reported thereon) for a Taxable period ending on or before,
or that includes, May 31, 2000, Sellers shall have the right at their expense to
participate in and control the conduct of such Contest, and for all Taxable
periods thereafter, Buyer shall control such Contests. If Sellers do not assume
the defense of any such Contest for a Taxable period ending on or before, or
that includes, May 31, 2000, Buyer may defend the same in such manner as it may
deem appropriate, including, but not limited to, settling such Contest (subject,
however, to Section 9.5(d) if such settlement would adversely affect Sellers)
after giving ten days' prior written notice to Sellers setting forth the terms
and conditions of settlement. In the event of a Contest covered by the second
sentence of this paragraph, that involves issues relating to a potential
adjustment for which Sellers have liability and that also involves separate
issues relating to a


                                      -54-
<PAGE>

potential adjustment for which Buyer would be liable, Buyer shall have the
right, at its expense, to control the Contest but only with respect to the
latter issues.

                  (c) With respect to issues relating to a potential adjustment
relating to Tax returns (or any item relating thereto or reported thereon) for
which both parties could be liable, (i) each party may participate in the
Contest, and (ii) the Contest shall be controlled by that party which would bear
the burden of the greater portion of the sum of the adjustment and any
corresponding adjustments that may reasonably be anticipated for future Tax
Periods. The principle set forth in the immediately preceding sentence shall
govern also for purposes of deciding any issue that must be decided jointly
(including, without limitation, choice of judicial forum) in situations in which
separate issues are otherwise controlled under this Article IX by Buyer and
Sellers.

                  (d) Neither Buyer nor Sellers shall enter into any compromise
nor agree to settle any claim pursuant to any Contest which would adversely
affect the other party for such year or a subsequent or prior year without the
written consent of the other party, which consent may not be unreasonably
withheld.

                  SECTION 9.6. TIME OF PAYMENT. Payment of any amounts under
this Article IX in respect of Taxes shall be made (i) at least three Business
Days before the due date of the applicable estimated or final Tax return
required to be filed by either Buyer or Sellers, as the case may be, that shows
Taxes due for which the other party is responsible under Sections 9.1(a) and
9.1(b), and (ii) within three Business Days following an agreement between
Sellers and Buyer that an indemnity amount is payable, an assessment of a Tax by
a Taxing authority that is not being contested in good faith, or a
"determination" having been made as such term is defined in Section 1313(a) of
the Code. If liability under this Article IX is in respect of Tax Losses other
than Taxes, payment of any amounts due for such Tax Losses shall be made within
five Business Days after the date when the relevant party has been notified that
such party has a liability for a determinable amount under this Article IX and
is provided with calculations or other materials supporting such liability.

                  SECTION 9.7. COOPERATION AND EXCHANGE OF INFORMATION. Sellers,
Buyer, Holdco and Newco shall provide each other with such cooperation and
information as any of them or their respective affiliates reasonably may request
of the others in filing any Tax return, amended Tax return or claim for refund,
determining a liability for Taxes or a right to a refund of Taxes or
participating in or conducting any Contest in respect of Taxes, including any of
the foregoing with respect to non-U.S. Taxes of Sellers or their affiliates.
Such cooperation and information shall include providing copies of relevant Tax
returns or portions thereof, together with accompanying


                                      -55-
<PAGE>

schedules, related work papers and documents relating to rulings or other
determinations by Tax authorities and copies of any other necessary information,
including information with respect to the valuation of the Company and its
Subsidiaries as of December 31, 1998. Each party and its affiliates shall make
its employees available at no cost on a basis mutually convenient to the other
parties to provide explanations of any documents or information provided
hereunder. Each of Sellers, Buyer, Holdco and Newco shall retain all Tax
returns, schedules and work papers, records and other documents in its
possession relating to Tax matters of the Company and the Subsidiaries for each
Taxable period first ending after the Closing Date and for all prior Taxable
periods until the later of (i) the expiration of the statute of limitations
(including extensions) of the Taxable periods to which such Tax returns and
other documents relate, or (ii) three years following the due date (without
extension) for such Returns. Any information obtained under this Section 9.7
shall be kept confidential except as may be otherwise necessary in connection
with the filing of Tax returns or claims for refund or in conducting a Contest
or as otherwise may be required by law, regulation or the rules of any stock
exchange.

                  SECTION 9.8. CONVEYANCE TAXES. Buyer, Holdco and Newco on the
one hand and Sellers on the other hand shall each be liable for 50% of any real
property transfer or gains, sales, use, transfer, value added, stock transfer,
and stamp taxes (other than as set forth in Section 2.3), any transfer,
recording, registration, and other fees, and any similar Taxes which become
payable in connection with the transactions contemplated by this Agreement
(collectively, "Conveyance Taxes"), and Buyer shall file or cause to be filed
such applications and documents as shall permit any such Tax to be assessed and
paid on or prior to the Closing Date in accordance with any available pre-sale
filing procedure. Buyer or Sellers, as appropriate, shall execute and deliver
all instruments and certificates necessary to enable the other to comply with
any filing requirements relating to any such Taxes. Each party shall hold the
other harmless for any Conveyance Taxes for which such first party is liable
under this Section 9.8.

                  SECTION 9.9. MISCELLANEOUS. (a) CGNU, Sellers, Buyer, Holdco
and Newco agree to treat all payments made by any of them to or for the benefit
of the other (including any payments to the Company or any Subsidiary) under
this Article IX or under other indemnity provisions of this Agreement as
adjustments to the Purchase Price or as capital contributions for Tax purposes
and that such treatment shall govern for purposes hereof except to the extent
that the laws of a particular jurisdiction provide otherwise.

                  (b) Any Tax sharing agreement or arrangement between Sellers
or any Life Sub and the Company or any Subsidiary shall terminate as of the
Closing Date, and any and all intercompany


                                      -56-
<PAGE>

liabilities with respect to Taxes between such parties that exist on the Closing
Date shall be extinguished. The parties to this Agreement intend (i) that there
not be any payments by either Seller or any Life Sub to the Company or any
Subsidiary after the Closing Date under any existing agreement with respect to
Taxes (other than this Agreement) and (ii) that payments with respect to Taxes
hereafter be pursuant only to this Agreement.

                  (c) Notwithstanding any other provision of this Agreement to
the contrary and except with respect to Sections 2.5, 3.1(k), 4.1(vi) and the
provisions of Section 8.1(b)(iii) and Section 8.3(b), all issues relating to Tax
matters shall be governed solely by the provisions of this Article IX.

                  (d) Neither Sellers nor Buyer shall make or cause to be made
any claim, consent or election or take or cause to be taken any action which
would materially increase the other party's liability to pay Taxes pursuant to
the terms of this Agreement unless (i) such election or action is required by
law or regulation or (ii) the party making such election or taking such action
provides a written waiver of its rights to any claim for any additional Taxes
that such party might have pursuant to the terms of this Agreement resulting
from such election or action.


                                    ARTICLE X

                          TERMINATION PRIOR TO CLOSING

                  SECTION 10.1. TERMINATION OF AGREEMENT. This Agreement may be
terminated at any time prior to the Closing:

                  (a) by CGNU or Buyer in writing, if there shall be any order,
injunction or decree of any Governmental Entity which prohibits or restrains any
party from consummating the transactions contemplated hereby, and such order,
injunction or decree shall have become final and nonappealable;

                  (b) by CGNU or Buyer in writing, if the Closing has not
occurred on or prior to March 31, 2001 (the "Termination Date"); provided,
however, that, if on the Termination Date the conditions to the Closing set
forth in Section 6.1(b), 6.1(c), 6.2(g) or 6.3(c) shall not have been fulfilled
but all other conditions to the Closing shall have been fulfilled or shall be
capable of being fulfilled if the Closing were to occur on such date, then the
Termination Date shall be extended to the earlier of (i) June 30, 2001 or (ii)
the eighth Business Day following the first date on which all conditions to
Closing in Sections 6.1(b), 6.1(c), 6.2(g) and 6.3(c) have been fulfilled or
waived;


                                      -57-

<PAGE>

                  (c) by CGNU if any of the conditions set forth in Section 6.1
or 6.3 shall have become incapable of fulfillment prior to June 30, 2001, and
shall not have been waived by Sellers;

                  (d) by Buyer if any of the conditions set forth in Section 6.1
or 6.2 shall have become incapable of fulfillment prior to June 30, 2001, and
shall not have been waived by Buyer; and

                  (e) at any time on or prior to the Closing Date, by mutual
written consent of CGNU, Sellers, Buyer, Holdco and Newco;

PROVIDED, HOWEVER, that the party seeking termination pursuant to clause (a),
(b), (c) or (d) is not then in material breach of its representations,
warranties, covenants or agreements contained in this Agreement.

                  SECTION 10.2. SURVIVAL. If this Agreement is terminated and
the transactions contemplated hereby are not consummated as described above,
this Agreement shall become null and void and of no further force and effect,
except for (a) the provisions of Section 4.2, this Section 10.2 and Article XI
and (b) rights and obligations arising from any breach of this Agreement prior
to such termination.


                                   ARTICLE XI

                               GENERAL PROVISIONS

                  SECTION 11.1. FEES AND EXPENSES. Whether or not the purchase
and sale of the Shares is consummated, each party hereto shall pay its own fees
and expenses incident to preparing for, entering into and carrying out this
Agreement and the consummation of the transactions contemplated hereby.

                  SECTION 11.2. NOTICES. All notices, requests, claims, demands
and other communications under this Agreement shall be in writing and shall be
delivered personally, by facsimile (which is confirmed as provided below) or by
overnight courier (providing proof of delivery) to the parties at the following
addresses (or at such other address for a party as shall be specified by like
notice):


                                      -58-
<PAGE>

                  (a)      if to Buyer, Holdco or Newco, to

                           White Mountains Insurance Group, Ltd.
                           12 Church Street
                           Suite 22A
                           Hamilton HM11
                           Bermuda
                           Fax:
                           Attention:  Ray Barrette

                           with a copy to:

                           White Mountains Insurance Group, Ltd.
                           80 South Main Street
                           Hanover, NH  03755
                           Fax:  603-643-4562
                           Attention:  Michael Paquette

                           and a copy to:

                           Cravath, Swaine & Moore
                           Worldwide Plaza
                           825 Eighth Avenue
                           New York, NY  10019
                           Fax:  212-474-3700
                           Attention:  Philip A. Gelston


                  (b)      if to CGNU or either Seller, to:

                           CGNU plc
                           St. Helens
                           1 Undershaft
                           20th Floor
                           London, ENGLAND
                           EC3P 3DQ
                           Fax:  020 7662 7700
                           Attention:  Group Company Secretary

                           CGU International Holdings Luxembourg S.A.
                           Galerie Kons
                           4th Floor
                           26 Place de la Gare
                           L-1616 LUXEMBOURG
                           Fax:
                           Attention:  William Gilson

                           CGU Holdings LLC
                           St. Helens
                           1 Undershaft
                           20th Floor
                           London, ENGLAND


                                      -59-
<PAGE>

                           EC3P 3DQ
                           Fax:  020 7662 7700
                           Attention: Richard Whitaker

                           with a copy, in the case of any notice to Sellers, to
                           CGNU at the address set forth above and, in the case
                           of notice to CGNU or either Seller, a copy to:

                           LeBoeuf, Lamb, Greene & MacRae, L.L.P.
                           125 West 55th Street
                           New York, NY  10019
                           Fax: (212) 424-8500

                           Attention: Robert S. Rachofsky

                  Notice given by personal delivery or overnight courier shall
be effective upon actual receipt. Notice given by facsimile shall be confirmed
by appropriate answer back and shall be effective upon actual receipt if
received during the recipient's normal business hours, or at the beginning of
the recipient's next Business Day if not received during the recipient's normal
business hours. All notices by facsimile shall be confirmed promptly after
transmission in writing by personal delivery or overnight courier.

                  SECTION 11.3. INTERPRETATION. When a reference is made in this
Agreement to a Section, Exhibit or Schedule, such reference shall be to a
Section of, or an Exhibit or Schedule to, this Agreement unless otherwise
indicated. Any fact or item disclosed on any section of the Disclosure Schedule
shall be deemed disclosed on all other sections of the Disclosure Schedule
(other than Section 1.1(a) thereof) to which such fact or item may apply if the
application of such fact or item to such other section is reasonably apparent.
Disclosure of any item in the Disclosure Schedule shall not be deemed an
admission that such item represents a material item, fact, exception of fact,
event or circumstance, that such disclosure is required thereon or that
occurrence or non-occurrence of any change or effect related to such item would
or might result in a Material Adverse Effect. The table of contents and headings
contained in this Agreement are for reference purposes only and shall not affect
in any way the meaning or interpretation of this Agreement. Whenever the words
"include", "includes" or "including" are used in this Agreement, they shall be
deemed to be followed by the words "without limitation". The terms "transactions
contemplated by this Agreement" and "transactions contemplated hereby" shall
include the Preclosing Transactions and the Restructuring Transactions. Whenever
the singular is used herein, the same shall include the plural, and whenever the
plural is used herein, the same shall include the singular, where appropriate.


                                      -60-
<PAGE>

                  SECTION 11.4. ENTIRE AGREEMENT; NO OTHER REPRESENTATIONS;
THIRD-PARTY BENEFICIARIES. This Agreement (including all exhibits and schedules
hereto) and the Confidentiality Agreement constitute the entire agreement, and
supersede all prior agreements, understandings, representations and warranties,
both written and oral, among the parties with respect to the subject matter of
this Agreement. Buyer, Holdco and Newco acknowledge that neither CGNU, either
Seller nor any affiliate nor any officer, director, employee, representative,
agent or advisor of any of them makes or has made any representation or
warranty, express or implied, or any other inducement or promise to Buyer,
Holdco or Newco except as specifically made in this Agreement. Buyer, Holdco and
Newco each has sufficient knowledge and experience in financial and business
matters so as to be capable of evaluating the merits and risks of its purchase
of the Shares and the other transactions contemplated hereby and is capable of
bearing the economic risks thereof. CGNU and Sellers acknowledge that neither
Buyer nor Holdco nor Newco nor any affiliate nor any officer, director,
employee, representative, agent or advisor of any of them makes or has made any
representation or warranty, express or implied, or any other inducement or
promise to CGNU or either Seller except as specifically made in this Agreement.
CGNU and Sellers each has sufficient knowledge and experience in financial and
business matters so as to be capable of evaluating the merits and risks of the
transactions contemplated hereby and is capable of bearing the economic risks
thereof. This Agreement is not intended to confer upon any person other than the
parties hereto any rights or remedies.

                  SECTION 11.5. GOVERNING LAW. This Agreement shall be governed
by, and construed in accordance with, the laws of the State of New York,
regardless of the laws that might otherwise govern under applicable principles
of conflicts of laws thereof.

                  SECTION 11.6. ASSIGNMENT. Neither this Agreement nor any of
the rights, interests or obligations under this Agreement shall be assigned, in
whole or in part, by operation of law or otherwise by any of the parties without
the prior written consent of the other parties, and any such assignment that is
not consented to shall be null and void. Notwithstanding the foregoing, (i)
following the Closing, either Seller may assign all or any portion of its
rights, interests or obligations hereunder to any affiliate and (ii) Buyer may
assign its rights hereunder by way of security and such secured party may assign
such rights by way of exercise of remedies; PROVIDED, HOWEVER, that no such
assignment pursuant to this clause (ii) shall limit or affect the assignor's
obligations hereunder. Subject to the two preceding sentences, this Agreement
will be binding upon, inure to the benefit of, and be enforceable by, the
parties and their respective successors and assigns.


                                      -61-
<PAGE>

                  SECTION 11.7. DISPUTE RESOLUTION; ENFORCEMENT. (a) In the
event of any dispute arising under this Agreement, prior to the commencement of
litigation, a senior officer of Buyer and a senior representative of Sellers
shall attempt in good faith to resolve the dispute consistent with the terms of
this Agreement. If they are unable to resolve the dispute in this manner within
a reasonable period of time, the parties may pursue judicial remedies with
respect to such dispute.

                  (b) The parties agree that irreparable damage would occur in
the event that any of the provisions of this Agreement were not performed in
accordance with their specific terms or were otherwise breached. It is
accordingly agreed that the parties shall be entitled to an injunction or
injunctions to prevent breaches of this Agreement and to enforce specifically
the terms and provisions of this Agreement in any court of the United States or
any state court which in either case is located in the City of New York (any
such federal or state court, a "New York Court"), in addition to any other
remedy to which they are entitled at law or in equity. In addition, each of the
parties hereto (a) consents to submit itself exclusively to the personal
jurisdiction of any New York Court in the event any dispute arises out of this
Agreement or any of the transactions contemplated by this Agreement and (b)
agrees that it will not attempt to deny or defeat such personal jurisdiction or
venue by motion or other request for leave from any such New York Court. Each
party further agrees that service of any process, summons, notice or document by
U.S. registered mail to such party's respective address set forth above shall be
effective service of process for any action, suit or proceeding in New York with
respect to any matters to which it has submitted to jurisdiction in this Section
11.7(b).

                  SECTION 11.8. SEVERABILITY; AMENDMENT; WAIVER. (a) Whenever
possible, each provision or portion of any provision of this Agreement will be
interpreted in such manner as to be effective and valid under applicable law,
but if any provision or portion of any provision of this Agreement is held to be
invalid, illegal or unenforceable in any respect under any applicable law or
rule in any jurisdiction, such invalidity, illegality or unenforceability will
not affect any other provision or portion of any provision in such jurisdiction,
and this Agreement will be reformed, construed and enforced in such jurisdiction
as if such invalid, illegal or unenforceable provision or portion of any
provision had never been contained herein.

                  (b) This Agreement may be amended only by a written instrument
signed by each of the parties.

                  (c) No delay on the part of any party in exercising any right,
power or privilege hereunder shall operate as a waiver thereof, nor shall any
waiver on the part of any party of any right, power or privilege, nor any single
or partial exercise of any such right, power or privilege, preclude any further
exercise thereof or the exercise of any other such right, power or privilege.


                                      -62-

<PAGE>

                  SECTION 11.9. COUNTERPARTS. This Agreement may be executed in
one or more counterparts, all of which shall be considered one and the same
agreement and shall become effective when one or more counterparts have been
signed by each of the parties and delivered to the other parties.


                                      -63-
<PAGE>

                  IN WITNESS WHEREOF, CGNU, Sellers, Buyer, Holdco and Newco
have caused this Agreement to be signed by their respective officers thereunto
duly authorized, all as of the date first written above.


                                    CGNU PLC


                                    By_________________________________________
                                      Name:
                                      Title:


                                    CGU INTERNATIONAL HOLDINGS LUXEMBOURG
                                      S.A.


                                    By_________________________________________
                                      Name:
                                      Title:


                                    CGU HOLDINGS LLC


                                    By_________________________________________
                                      Name:
                                      Title:


                                    WHITE MOUNTAINS INSURANCE
                                    GROUP, LTD.


                                    By_________________________________________
                                      Name:
                                      Title:


                                    TACK HOLDING CORP.


                                    By_________________________________________
                                      Name:
                                      Title:


                                    TACK ACQUISITION CORP.


                                    By_________________________________________
                                      Name:
                                      Title:


                                      -64-
<PAGE>

                                                                       EXHIBIT A

                            STOCK PURCHASE AGREEMENT
                                     BETWEEN
                                 CGU CORPORATION
                                       AND
                               [________________]


         This Agreement, dated as of the __ day of _________, 200_, (the
"Agreement"), is by and among CGU Corporation, a Delaware corporation
("Seller"), and [_____________] ("Buyer").

         WHEREAS, Pilot Insurance Company, an Ontario insurance company (the
"Company"), has issued and outstanding 10,225 shares of its common stock,
Can.$50 par value ("Company Common Stock"); and

         WHEREAS, Seller is the owner of all the outstanding shares of Company
Common Stock, other than the 10 shares of Company Common Stock registered to
each of the current and former directors of the Company listed on Schedule A
(the "Directors' Shares") (the outstanding shares of Company Common Stock other
than the Directors' Shares, the "Shares"); and

         WHEREAS, Seller desires to sell to Buyer, and Buyer desires to purchase
from Seller, the Shares upon the terms and conditions set forth herein.

         NOW THEREFORE, in consideration of the mutual covenants, agreements and
provisions hereinafter contained, and of other good and valuable consideration,
the receipt and sufficiency of which are hereby acknowledged, the parties do
hereby agree as follows:

                                    ARTICLE I

                             PURCHASE OF THE SHARES

         1.1      PURCHASE OF SHARES. Upon the terms and subject to the
conditions set forth in this Agreement, at the Closing (as defined in Section
1.3), (i) Seller shall sell to Buyer, and Buyer shall purchase from Seller, the
Shares and (ii) Seller shall transfer to Buyer any and all interest Seller may
have in the Directors' Shares.

         1.2      PURCHASE PRICE. As consideration for the purchase of the
Shares, at the Closing, Buyer shall pay to Seller the Purchase Price in the
manner specified in Section 1.4(a). The Purchase Price shall be equal to
US$285,000,000.

<PAGE>

         1.3      CLOSING. The closing of the purchase and sale of the Shares
(the "Closing") shall take place at the offices of Stikeman Elliott, 5300
Commerce Court West, 199 Bay Street, Toronto, Canada M5L 1B9, at 9:00 a.m.,
Toronto time, immediately prior to the "Closing" under the Stock Purchase
Agreement among CGU International Holdings Luxembourg S.A., CGU Holdings LLC,
CGNU plc, White Mountains Insurance Group, Ltd., TACK Holding Corp. and TACK
Acquisition Corp. dated as of September 24, 2000, or at such earlier date and
time as Buyer and Sellers shall mutually agree (the "Closing Date").

         1.4      PAYMENT OF PURCHASE PRICE; DELIVERY OF SHARES. At the Closing:

         (a)      Buyer shall deliver to Seller the Purchase Price by wire
transfer of immediately available funds to such account as Seller may direct;

         (b)      Seller shall deliver to Buyer a certificate or certificates
representing the Shares duly endorsed in blank or accompanied by duly executed
instruments of transfer, with all necessary stock transfer tax stamps attached
thereto and cancelled; and

         (c)      Seller and Buyer shall deliver a cross-receipt in appropriate
form.

                                   ARTICLE II

                                   CONDITIONS

         The obligations of each of Buyer and Seller to effect the Closing shall
be subject to the following conditions, any one or more of which may be waived
in writing, as to itself, by either party:

         (a)      all filings required to be made prior to the Closing Date
with, and all consents, approvals, permits and authorizations required to be
obtained prior thereto from, governmental or regulatory authorities or agencies
in connection with the consummation of the transactions contemplated hereby by
Sellers and Buyer shall have been made or obtained; and

         (b)      no temporary restraining order, preliminary or permanent
injunction or other order issued by any court of competent jurisdiction and no
statute, rule or regulation of any governmental or regulatory authority or
agency preventing the consummation of the purchase and sale of the Shares shall
be in effect.

<PAGE>

                                  ARTICLE III

                                 MISCELLANEOUS

         3.1      FURTHER ASSURANCES. On and after the Closing Date, each of the
parties shall execute and deliver, or cause to be executed and delivered, all
such documents, instruments and conveyances and shall take, or cause to be
taken, such further actions, as may be reasonably required or desirable in order
to carry out the transactions contemplated by this Agreement.

         3.2      TERMINATION. Notwithstanding anything to the contrary in this
Agreement, this Agreement may be terminated at any time before the Closing by
the mutual consent of the Boards of Directors of Buyer and Seller. Neither Buyer
nor Seller shall have any liability to any other person by reason of the
termination of this Agreement.

         3.3      AMENDMENT. This Agreement may be amended at any time by an
instrument in writing executed by the parties.

         3.4      BINDING EFFECT; ASSIGNMENT. This Agreement shall be binding
upon and inure to the benefit of the parties and their respective successors,
permitted assigns and legal representatives. Neither this Agreement, nor any of
the rights, interests or obligations hereunder, may be assigned, in whole or in
part, by operation of law or otherwise by any party without the prior written
consent of the other party hereto. Notwithstanding the foregoing, prior to the
Closing, Buyer may assign this Agreement to another subsidiary of CGNU plc, a
company incorporated under the laws of England and Wales.

         3.5      GOVERNING LAW. This Agreement shall be governed by, and
construed in accordance with, the laws of the State of New York without regard
to principles of conflict of laws.

         3.6      COUNTERPARTS. This Agreement may be executed in one or more
counterparts, each of which shall be deemed an original but all of which
together shall be deemed one and the same agreement.


<PAGE>

         IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be
executed by their respective duly authorized officers on this ___ day of
__________, 200_.

                                    CGU CORPORATION


                                    By:_________________________________________
                                          Name:
                                          Title:

                                    [BUYER]


                                    By:_________________________________________
                                          Name:
                                          Title:

<PAGE>


                                   Schedule A

                      Current and Former Directors of Pilot
                    to Whom Directors' Shares are Registered

<TABLE>
<CAPTION>
                NAME                                       NUMBER OF SHARES
         <S>                                               <C>
         John K. Lower                                            10
         Robert M. Sutherland                                     10
         C.R. Jones                                               10
         S.M. Kistruck                                            10
         [John A. Weber]                                          10
         [A. Warren Moysey]                                       10
         Walter E. Farnam                                         10
         Frank J. Coyne                                           10
</TABLE>

<PAGE>

                                                                       EXHIBIT B

                            STOCK PURCHASE AGREEMENT

                                     BETWEEN

                           CGU ASSET MANAGEMENT, INC.

                                       AND

                             [CGU GROUP CANADA LTD.]

         This Agreement, dated as of the __ day of _________, 200__, (the
"Agreement"), is by and between CGU Asset Management, Inc., a Delaware
corporation ("Seller"), and [CGU Group Canada Ltd., an Ontario corporation]
("Buyer").

         WHEREAS, Seller is the owner of 250 shares of common stock, Can.$1,000
par value (the "Shares"), of CGU Investment Management Canada Limited, an
Ontario corporation (the "Company"), which Shares constitute all of the issued
and outstanding shares of the Company's capital stock; and

         WHEREAS, Seller desires to sell to Buyer, and Buyer desires to purchase
from Seller, the Shares upon the terms and conditions set forth herein.

         NOW THEREFORE, in consideration of the mutual covenants, agreements and
provisions hereinafter contained, and of other good and valuable consideration,
the receipt and sufficiency of which are hereby acknowledged, the parties do
hereby agree as follows:

                                    ARTICLE I

                             PURCHASE OF THE SHARES

         1.1      PURCHASE OF SHARES. Upon the terms and subject to the
conditions set forth in this Agreement, at the Closing (as defined in Section
1.3), Seller shall sell to Buyer, and Buyer shall purchase from Seller, the
Shares.

         1.2      PURCHASE PRICE. As consideration for the purchase of the
Shares, at the Closing (as defined in Section 1.3), Buyer shall pay Seller the
Purchase Price in the manner specified in Section 1.4(a). The "Purchase Price"
shall be equal to the fair market value of the Shares as determined by KPMG
Consulting LLC for United States tax reporting purposes.

         1.3      CLOSING. The closing of the purchase and sale of the Shares
(the "Closing") shall take place at the offices of LeBoeuf, Lamb, Greene &
MacRae, L.L.P., located at 125 West 55th Street, New York, NY 10019, at 9:00
a.m., New York City time,

<PAGE>

immediately prior to the "Closing" under the Stock Purchase Agreement among CGU
International Holdings Luxembourg S.A., CGU Holdings LLC, CGNU plc, White
Mountains Insurance Group, Ltd., TACK Holding Corp. and TACK Acquisition Corp.
dated as of September 24, 2000, or at such earlier date and time as Buyer and
Seller shall mutually agree (the "Closing Date").

         1.4      PAYMENT OF PURCHASE PRICE; DELIVERY OF SHARES. At the Closing:

         (a)      Buyer shall deliver to Seller the Purchase Price by wire
transfer of immediately available funds to such account as Seller may direct;

         (b)      Seller shall deliver to Buyer a certificate or certificates
representing the Shares duly endorsed in blank or accompanied by duly executed
instruments of transfer, with all necessary stock transfer tax stamps attached
thereto and cancelled; and

         (c)      Seller and Buyer shall deliver a cross-receipt in appropriate
form.

                                   ARTICLE II

                                   CONDITIONS

         The obligations of each of Buyer and Seller to effect the Closing shall
be subject to the following conditions, any one or more of which may be waived
in writing, as to itself, by either party:

         (a)      all filings required to be made prior to the Closing Date
with, and all consents, approvals, permits and authorizations required to be
obtained prior thereto from, governmental or regulatory authorities or agencies
in connection with the consummation of the transactions contemplated hereby by
Seller and Buyer shall have been made or obtained; and

         (b)      no temporary restraining order, preliminary or permanent
injunction or other order issued by any court of competent jurisdiction and no
statute, rule or regulation of any governmental or regulatory authority or
agency preventing the consummation of the purchase and sale of the Shares shall
be in effect.


                                       2
<PAGE>

                                   ARTICLE III

                                  MISCELLANEOUS

         3.1      FURTHER ASSURANCES. On and after the Closing Date, each of the
parties shall execute and deliver, or cause to be executed and delivered, all
such documents, instruments and conveyances and shall take, or cause to be
taken, such further actions, as may be reasonably required or desirable in order
to carry out the transactions contemplated by this Agreement.

         3.2      TERMINATION. Notwithstanding anything to the contrary in this
Agreement, this Agreement may be terminated at any time before the Closing by
the mutual consent of the Boards of Directors of Buyer and Seller. Neither Buyer
nor Seller shall have any liability to any other person by reason of the
termination of this Agreement.

         3.3      AMENDMENT. This Agreement may be amended at any time by an
instrument in writing executed by the parties.

         3.4      BINDING EFFECT; ASSIGNMENT. This Agreement shall be binding
upon and inure to the benefit of the parties and their respective successors,
permitted assigns and legal representatives. Neither this Agreement, nor any of
the rights, interests or obligations hereunder, may be assigned, in whole or in
part, by operation of law or otherwise by any party without the prior written
consent of the other parties hereto. Notwithstanding the foregoing, prior to the
Closing Buyer may assign this Agreement to any affiliate.

         3.5      GOVERNING LAW. This Agreement shall be governed by, and
construed in accordance with, the laws of the State of New York without regard
to principles of conflict of laws.

         3.6      COUNTERPARTS. This Agreement may be executed in one or more
counterparts, each of which shall be deemed an original but all of which
together shall be deemed one and the same agreement.

         IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be
executed by their respective duly authorized officers on this ___ day of
__________, 200__.

                                     CGU ASSET MANAGEMENT, INC.


                                     By:________________________________________


                                       3

<PAGE>

                                            Name:
                                            Title:

                                     [CGU GROUP CANADA LTD.]


                                     By:________________________________________
                                            Name:
                                            Title:


                                       4
<PAGE>

                                                                       EXHIBIT C

                            STOCK PURCHASE AGREEMENT
                                     BETWEEN
                                 CGU CORPORATION
                                       AND
                                [_______________]


         This Agreement, dated as of the __ day of _________, 200__, (the
"Agreement"), is by and between CGU Corporation, a Delaware corporation
("Seller"), and [___________] ("Buyer").

         WHEREAS, Seller is the owner of 28,349 shares of common stock, $100.00
par value (the "Shares"), of CGU Life Insurance Company of America, a Delaware
insurance company (the "Company"), which Shares constitute all of the issued and
outstanding shares of the Company's capital stock; and

         WHEREAS, the Company is the owner of 20,000 shares of common stock,
$100.00 par value (the "Subsidiary Shares"), of CGU Life Insurance Company of
New York, a New York insurance company ("Subsidiary"), which Subsidiary Shares
constitute all of the issued and outstanding shares of Subsidiary's capital
stock; and

         WHEREAS, Seller is the owner of 100 shares of common stock, $1.00 par
value (the "Service Shares"), of CGU Annuity Service Corporation, a Delaware
corporation ("Service"), which Service Shares constitute all of the issued and
outstanding shares of Service's capital stock; and

         WHEREAS, Seller desires to sell to Buyer, and Buyer desires to purchase
from Seller, the Shares and the Service Shares upon the terms and conditions set
forth herein.

         NOW THEREFORE, in consideration of the mutual covenants, agreements and
provisions hereinafter contained, and of other good and valuable consideration,
the receipt and sufficiency of which are hereby acknowledged, the parties do
hereby agree as follows:

                                    ARTICLE I

                             PURCHASE OF THE SHARES

         1.1      PURCHASE OF SHARES. Upon the terms and subject to the
conditions set forth in this Agreement, at the Closing (as defined in Section
1.3), Seller shall sell to Buyer, and Buyer shall purchase from Seller, the
Shares and the Service Shares.

<PAGE>

         1.2      PURCHASE PRICE. As consideration for the purchase of the
Shares, at the Closing, Buyer shall pay Seller the Purchase Price in the manner
specified in Section 1.4(a). The "Purchase Price" shall be equal to the fair
market value of the Company as of the Closing Date (as defined in Section 1.3),
as determined by KPMG Consulting LLC for United States tax reporting purposes
and set forth in its report to be issued, which Purchase Price shall not be less
than $200 million or greater than $220 million. As consideration for the
purchase of the Service Shares, Buyer shall pay Seller the Service Purchase
Price in the manner specified in Section 1.4(a). The "Service Purchase Price"
shall be the fair market value of the Service Shares as determined by Buyer and
Seller.

         1.3      CLOSING. The closing of the purchase and sale of the Shares
and the Service Shares (the "Closing") shall take place at the offices of
LeBoeuf, Lamb, Greene & MacRae, L.L.P., located at 125 West 55th Street, New
York, NY 10019, at 9:00 a.m., New York City time, immediately prior to the
"Closing" under the Stock Purchase Agreement among CGU International Holdings
Luxembourg S.A., CGU Holdings LLC, CGNU plc, White Mountains Insurance Group,
Ltd., TACK Holding Corp. and TACK Acquisition Corp. dated as of September 24,
2000, or at such earlier date and time as Buyer and Seller shall mutually agree
(the "Closing Date").

         1.4      PAYMENT; DELIVERY OF SHARES. At the Closing:

         (a)      Buyer shall deliver to Seller the Purchase Price and the
Service Purchase Price by wire transfer of immediately available funds to such
account as Seller may direct;

         (b)      Seller shall deliver to Buyer a certificate or certificates
representing the Shares and a certificate or certificates representing the
Service Shares, each duly endorsed in blank or accompanied by duly executed
instruments of transfer, with all necessary stock transfer tax stamps attached
thereto and cancelled; and

         (c)      Seller and Buyer shall deliver a cross-receipt in appropriate
form.

                                   ARTICLE II

                                   CONDITIONS

         The obligations of each of Buyer and Seller to effect the Closing shall
be subject to the following conditions, any one or more of which may be waived
in writing, as to itself, by either party:


                                       2
<PAGE>

         (a)      all filings required to be made prior to the Closing Date
with, and all consents, approvals, permits and authorizations required to be
obtained prior thereto from, governmental or regulatory authorities or agencies
in connection with the consummation of the transactions contemplated hereby by
Seller and Buyer shall have been made or obtained; and

         (b)      no temporary restraining order, preliminary or permanent
injunction or other order issued by any court of competent jurisdiction and no
statute, rule or regulation of any governmental or regulatory authority or
agency preventing the consummation of the purchase and sale of the Shares and
the Service Shares shall be in effect.

                                   ARTICLE III

                                  MISCELLANEOUS

         3.1      FURTHER ASSURANCES. On and after the Closing Date, each of the
parties shall execute and deliver, or cause to be executed and delivered, all
such documents, instruments and conveyances and shall take, or cause to be
taken, such further actions, as may be reasonably required or desirable in order
to carry out the transactions contemplated by this Agreement.

         3.2      TERMINATION. Notwithstanding anything to the contrary in this
Agreement, this Agreement may be terminated at any time before the Closing by
the mutual consent of the Boards of Directors of Buyer and Seller. Neither Buyer
nor Seller shall have any liability to any other person by reason of the
termination of this Agreement.

         3.3      AMENDMENT. This Agreement may be amended at any time by an
instrument in writing executed by the parties.

         3.4      BINDING EFFECT; ASSIGNMENT. This Agreement shall be binding
upon and inure to the benefit of the parties and their respective successors,
permitted assigns and legal representatives. Neither this Agreement, nor any of
the rights, interests or obligations hereunder, may be assigned, in whole or in
part, by operation of law or otherwise by any party without the prior written
consent of the other parties hereto.

         3.5      GOVERNING LAW. This Agreement shall be governed by, and
construed in accordance with, the laws of the State of New York without regard
to principles of conflict of laws.

         3.6 COUNTERPARTS. This Agreement may be executed in one or more
counterparts, each of which shall be deemed an


                                       3
<PAGE>

original but all of which together shall be deemed one and the same agreement.

         IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be
executed by their respective duly authorized officers on this ___ day of
__________, 200__.

                                     CGU CORPORATION


                                     By:________________________________________
                                            Name:
                                            Title:

                                     [BUYER]


                                     By:________________________________________
                                            Name:
                                            Title:


                                       4

<PAGE>

                                                                       EXHIBIT D

                            STOCK PURCHASE AGREEMENT
                                     BETWEEN
                                 CGU CORPORATION
                                       AND
                                 [____________]


         This Agreement, dated as of the __ day of _________, 2000, (the
"Agreement"), is by and between CGU Corporation, a Delaware corporation
("Seller"), and [__________], a [__________] ("Buyer").

         WHEREAS, Seller is the owner of 2,273,812 Ordinary Shares (the
"Shares") of Societe Generale SA, a French company ("SocGen"); and

         WHEREAS, Seller desires to sell to Buyer, and Buyer desires to purchase
from Seller, the Shares upon the terms and conditions set forth herein.

         NOW THEREFORE, in consideration of the mutual covenants, agreements and
provisions hereinafter contained, and of other good and valuable consideration,
the receipt and sufficiency of which are hereby acknowledged, the parties do
hereby agree as follows:

                                    ARTICLE I

                             PURCHASE OF THE SHARES

         1.1      PURCHASE OF SHARES. Upon the terms and subject to the
conditions set forth in this Agreement, at the Closing (as defined in Section
1.3), Seller shall sell to Buyer, and Buyer shall purchase from Seller, the
Shares.

         1.2      PURCHASE PRICE. As consideration for the purchase of the
Shares, at the Closing, Buyer shall pay Seller the Purchase Price in the manner
specified in Section 1.4(a). The "Purchase Price" shall be equal to the number
of Shares multiplied by the average closing price on the principal securities
exchange for an Ordinary Share of SocGen for each of the trading days commencing
September 25, 2000 through October 15, 2000, but not less than 98% of the
closing price on September 22, 2000 on the principal securities exchange for an
Ordinary Share of SocGen.

         1.3      CLOSING. The closing of the purchase and sale of the Shares
(the "Closing") shall take place at the offices of LeBoeuf, Lamb, Greene &
MacRae, L.L.P., located at 125 West 55th Street, New York, NY 10019, at 10:00
a.m., New York City time, on

<PAGE>

October 16, 2000, or at such other place, date and time as Buyer and Seller
shall mutually agree (the "Closing Date").

         1.4      PAYMENT; DELIVERY OF SHARES.  At the Closing:

         (a)      Buyer shall deliver to Seller the Purchase Price by wire
transfer of immediately available funds to such account as Seller may direct;

         (b)      Seller shall deliver to Buyer a certificate or certificates
representing the Shares duly endorsed in blank or accompanied by duly executed
instruments of transfer, with all necessary stock transfer tax stamps attached
thereto and cancelled; and

         (c)      Seller and Buyer shall deliver a cross-receipt in appropriate
form.

                                   ARTICLE II

                                   CONDITIONS

                  The obligations of each of Buyer and Seller to effect the
Closing shall be subject to the following conditions, any one or more of which
may be waived in writing, as to itself, by either party:

         (a)      all filings required to be made prior to the Closing Date
with, and all consents, approvals, permits and authorizations required to be
obtained prior thereto from, governmental or regulatory authorities or agencies
in connection with the consummation of the transactions contemplated hereby by
Seller and Buyer shall have been made or obtained; and

         (b)      no temporary restraining order, preliminary or permanent
injunction or other order issued by any court of competent jurisdiction and no
statute, rule or regulation of any governmental or regulatory authority or
agency preventing the consummation of the purchase and sale of the Shares shall
be in effect.

                                   ARTICLE III

                                  MISCELLANEOUS

         3.1      FURTHER ASSURANCES. On and after the Closing Date, each of the
parties shall execute and deliver, or cause to be executed and delivered, all
such documents, instruments and conveyances and shall take, or cause to be
taken, such further actions, as may be reasonably required or desirable in order
to carry out the transactions contemplated by this Agreement.


                                       2
<PAGE>

         3.2      TERMINATION. Notwithstanding anything to the contrary in this
Agreement, this Agreement may be terminated at any time before the Closing by
the mutual consent of the Boards of Directors of Buyer and Seller. Neither Buyer
nor Seller shall have any liability to any other person by reason of the
termination of this Agreement.

         3.3      AMENDMENT. This Agreement may be amended at any time by an
instrument in writing executed by the parties.

         3.4      BINDING EFFECT; ASSIGNMENT. This Agreement shall be binding
upon and inure to the benefit of the parties and their respective successors,
permitted assigns and legal representatives. Neither this Agreement, nor any of
the rights, interests or obligations hereunder, may be assigned, in whole or in
part, by operation of law or otherwise by any party without the prior written
consent of the other parties hereto. Notwithstanding the foregoing, prior to the
Closing Buyer may assign this Agreement to any affiliate.

         3.5      GOVERNING LAW. This Agreement shall be governed by, and
construed in accordance with, the laws of the State of New York without regard
to principles of conflict of laws.

         3.6      COUNTERPARTS. This Agreement may be executed in one or more
counterparts, each of which shall be deemed an original but all of which
together shall be deemed one and the same agreement.


                                       3
<PAGE>

         IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be
executed by their respective duly authorized officers on this ___ day of
__________, 2000.

                                    CGU CORPORATION


                                    By:_________________________________________
                                           Name:
                                           Title:

                                    [Buyer]


                                    By:_________________________________________
                                           Name:
                                           Title:


                                        4
<PAGE>

                                                                       EXHIBIT E

                            STOCK PURCHASE AGREEMENT
                                     BETWEEN
                       COMMERCIAL UNION INSURANCE COMPANY,
                              CGU INSURANCE COMPANY
                                       AND
                                  [__________]


         This Agreement, dated as of the __ day of _________, 2000, (the
"Agreement"), is by and between Commercial Union Insurance Company, a
Massachusetts insurance company ("CUIC"), CGU Insurance Company, a Pennsylvania
insurance company ("CGUIC" and, together with CUIC, "Sellers"), and
[___________], a [___________] ("Buyer").

         WHEREAS, Sellers collectively own 447,294 Ordinary Shares (the
"Shares") of Munchener Ruckversicherungs-Gesellschaft AG, a German company
("Munich Re"); and

         WHEREAS, Sellers desire to sell to Buyer, and Buyer desires to purchase
from Sellers, the Shares upon the terms and conditions set forth herein.

         NOW THEREFORE, in consideration of the mutual covenants, agreements and
provisions hereinafter contained, and of other good and valuable consideration,
the receipt and sufficiency of which are hereby acknowledged, the parties do
hereby agree as follows:

                                    ARTICLE I

                             PURCHASE OF THE SHARES

         1.1      PURCHASE OF SHARES. Upon the terms and subject to the
conditions set forth in this Agreement, at the Closing (as defined in Section
1.3), (i) CUIC shall sell to Buyer, and Buyer shall purchase from CUIC, the
Shares held by CUIC (the "CUIC Shares"), and (ii) CGUIC shall sell to Buyer, and
Buyer shall purchase from CGUIC, the Shares held by CGUIC (the "CGUIC Shares").

         1.2      PURCHASE PRICE. As consideration for the purchase of the
Shares, at the Closing, Buyer shall pay (a) CUIC an amount equal to 24.1452% of
the Purchase Price (the "CUIC Purchase Price"), and (b) CGUIC an amount equal to
75.8548% of the Purchase Price (the "CGUIC Purchase Price"), in each case in the
manner specified in Section 1.4(a). The "Purchase Price" shall be equal to the
number of Shares multiplied by the average closing price on the principal
securities exchange for an Ordinary Share of Munich Re for each of the trading
days commencing September 25, 2000 through October 15, 2000, but not


<PAGE>

more than 110% of the closing price on September 22, 2000 on the principal
securities exchange for an Ordinary Share of Munich Re.

         1.3      CLOSING. The closing of the purchase and sale of the Shares
(the "Closing") shall take place at the offices of LeBoeuf, Lamb, Greene &
MacRae, L.L.P., located at 125 West 55th Street, New York, NY 10019, at 10:00
a.m., New York City time, on October 16, 2000, or at such other place, date and
time as Buyer and Sellers shall mutually agree (the "Closing Date").

         1.4      PAYMENT; DELIVERY OF SHARES. At the Closing:

         (a)      Buyer shall deliver (i) to CUIC the CUIC Purchase Price by
wire transfer of immediately available funds to such account as CUIC may direct,
and (ii) to CGUIC the CGUIC Purchase Price by wire transfer of immediately
available funds to such account as CGUIC may direct;

         (b)      (i) CUIC shall deliver to Buyer a certificate or certificates
representing the CUIC Shares duly endorsed in blank or accompanied by duly
executed instruments of transfer, with all necessary stock transfer tax stamps
attached thereto and cancelled and (ii) CGUIC shall deliver to Buyer a
certificate or certificates representing the CGUIC Shares duly endorsed in blank
or accompanied by duly executed instruments of transfer, with all necessary
stock transfer tax stamps attached thereto and cancelled; and

         (c)      Sellers and Buyer shall deliver a cross-receipt in appropriate
form.

                                   ARTICLE II

                                   CONDITIONS

                  The obligations of each of Buyer and Sellers to effect the
Closing shall be subject to the following conditions, any one or more of which
may be waived in writing, as to itself, by any party:

         (a)      all filings required to be made prior to the Closing Date
with, and all consents, approvals, permits and authorizations required to be
obtained prior thereto from, governmental or regulatory authorities or agencies
in connection with the consummation of the transactions contemplated hereby by
Sellers and Buyer shall have been made or obtained; and

         (b)      no temporary restraining order, preliminary or permanent
injunction or other order issued by any court of competent jurisdiction and no
statute, rule or regulation of any governmental or regulatory authority or
agency preventing the consummation of the purchase and sale of the Shares shall
be in effect.


                                       2
<PAGE>

                                   ARTICLE III

                                  MISCELLANEOUS

         3.1      FURTHER ASSURANCES. On and after the Closing Date, each of the
parties shall execute and deliver, or cause to be executed and delivered, all
such documents, instruments and conveyances and shall take, or cause to be
taken, such further actions, as may be reasonably required or desirable in order
to carry out the transactions contemplated by this Agreement.

         3.2      TERMINATION. Notwithstanding anything to the contrary in this
Agreement, this Agreement may be terminated at any time before the Closing by
the mutual consent of the Boards of Directors of Buyer and Sellers. Neither
Buyer nor Sellers shall have any liability to any other person by reason of the
termination of this Agreement.

         3.3      AMENDMENT. This Agreement may be amended at any time by an
instrument in writing executed by the parties.

         3.4      BINDING EFFECT; ASSIGNMENT. This Agreement shall be binding
upon and inure to the benefit of the parties and their respective successors,
permitted assigns and legal representatives. Neither this Agreement, nor any of
the rights, interests or obligations hereunder, may be assigned, in whole or in
part, by operation of law or otherwise by any party without the prior written
consent of the other parties hereto. Notwithstanding the foregoing, prior to the
Closing Buyer may assign this Agreement to any affiliate.

         3.5      GOVERNING LAW. This Agreement shall be governed by, and
construed in accordance with, the laws of the State of New York without regard
to principles of conflict of laws.

         3.6      COUNTERPARTS. This Agreement may be executed in one or more
counterparts, each of which shall be deemed an original but all of which
together shall be deemed one and the same agreement.


                                       3
<PAGE>

         IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be
executed by their respective duly authorized officers on this ___ day of
__________, 2000.

                                    Commercial Union Insurance Company


                                    By:_________________________________________
                                            Name:
                                            Title:

                                    CGU Insurance Company


                                    By:_________________________________________
                                            Name:
                                            Title:

                                    [Buyer]


                                    By:_________________________________________
                                            Name:
                                            Title:


                                        4
<PAGE>

                                                                       EXHIBIT F

                                LICENSE AGREEMENT

         THIS LICENSE AGREEMENT ("AGREEMENT") is made and entered into this
______ day of __________, 200__ by and between CGNU plc, a corporation organized
under the laws of England and Wales ("LICENSOR"), and each of the Licensees (as
defined below) named herein.

         WHEREAS, Licensor, CGU International Holdings Luxembourg S.A., CGU
Holdings LLC (together, "SELLERS"), White Mountains Insurance Group, Ltd., TACK
Holding Corp. and TACK Acquisition Corp. ("Newco") have entered into that
certain Stock Purchase Agreement dated as of September 24, 2000 (the "STOCK
PURCHASE AGREEMENT"), pursuant to which Newco has purchased from Sellers all of
the outstanding shares of common stock of CGU Corporation, the direct or
indirect parent company of each of the Licensees; and

         WHEREAS, it is the intention of the parties to the Stock Purchase
Agreement that each of the Licensees is to transfer to CGNU all of its right,
title or interest, including all associated goodwill, which any of them may have
in the Trademarks (as defined below) and to cease using the Licensed Trademarks,
in the case of Licensees that are Insurance Subsidiaries (as defined in the
Stock Purchase Agreement), as soon as reasonably practicable and, in the case of
Licensees that are not Insurance Subsidiaries, in no event later than the
applicable date specified in Section 3 below; and

         WHEREAS, Licensor is the owner of the Licensed Trademarks; and

         WHEREAS, in connection with the transactions contemplated by the Stock
Purchase Agreement, Licensor wishes to grant to the Licensees, and the Licensees
wish to accept, a nonexclusive license to use the Licensed Trademarks (as
defined below) on the terms and conditions set forth in this Agreement; and

         WHEREAS, each Licensee, subject to the restrictions set forth in this
Agreement, desires to use the Licensed Trademarks on a temporary basis in
connection with the Licensees' current property/casualty insurance business; and

         WHEREAS, the parties hereto acknowledge the need to maintain and
preserve the integrity of the Trademarks forming the subject matter of this
Agreement;

         NOW THEREFORE, in consideration of the mutual covenants and agreements
set forth in the Agreement, and for other good and valuable consideration, the
receipt and sufficiency of which are hereby acknowledged, the parties hereby
agree as follows:

         1.       DEFINITIONS.  For purposes of this Agreement,

<PAGE>



         (a)      "AFFILIATE" of any person means another person that directly
                  or indirectly, through one or more intermediaries, controls,
                  is controlled by or is under common control with such first
                  person.

         (b)      "INSURANCE LICENSEE" means each of CGU Insurance Company, CGU
                  Insurance Company of Illinois, CGU Insurance Company of New
                  Jersey, CGU Insurance Company of New York, Commercial Union
                  Insurance Company, Commercial Union Midwest Insurance Company,
                  Commercial Union York Insurance Company, CU Homeland Insurance
                  Company, CU Lloyd's of Texas, GA Insurance Company of New
                  York, General Accident Insurance Company and General Accident
                  Reinsurance Company of America.

         (c)      "LICENSEE" means an Insurance Licensee or an Other Licensee.

         (d)      "OTHER LICENSEE" means each of A.W.G. Dewar, Inc., American
                  Central Insurance Company, American Employers' Insurance
                  Company, Beacon Advertising Corporation, CGU Asset Management,
                  Inc., CGU Corporation, CGU Finance Corporation, Commercial
                  Union Risk Management, Inc., CUIC Leasing, Inc., CU Investors
                  Co. #15, CU Investors Co. #16, CU Investors Co. #18, CU
                  Investors Co. #21, CU Lloyd's, Inc., The Employers' Fire
                  Insurance Company, Farmers and Merchants Insurance Company,
                  General Accident Services Corporation, General Assurance
                  Company, Hawkeye-Security Insurance Company, Houston General
                  Insurance Company, Houston General Lloyds, Midwestern
                  Insurance Company, National Farmers Union Property and
                  Casualty Company, National Farmers Union Standard Insurance
                  Company, North Pacific Insurance Company, The Northern
                  Assurance Company of America, Oregon Automobile Insurance
                  Company, Potomac Insurance Company, Potomac Insurance Company
                  of Illinois, TCH Insurance Agency, Inc., Traders & General
                  Insurance Company, Traders & Pacific Insurance Company,
                  Tri-State Insurance Company and United Security Insurance
                  Company.

         (e)      "TERRITORY" means (i) the United States of America (including
                  territories and possessions), (ii) with respect to CGU
                  Insurance Company in connection solely with the business
                  written by it in Taiwan and 100% reinsured with an affiliate
                  of Licensor, Taiwan and (iii) current Intranet, Internet and
                  online sites and usages in effect as of the date of this
                  Agreement.

         2.       TRANSFER OF TITLE TO TRADEMARKS; CESSATION OF USE. (a) Each
Licensee hereby transfers to Licensor any and all right, title or interest,
including all associated goodwill, which any of them may have in or to (i) the
names, trademarks, service marks, acronyms, domain names or logos listed on
Annex A hereto and any name, trademark, service mark, acronym, domain name (in
any top-level domain or other domain) or logo currently used by such Licensee
that is based on or incorporates any name, trademark, service mark, acronym,


                                     - 2 -

<PAGE>

domain name or logo listed on Annex A hereto (collectively, the "LICENSED
TRADEMARKS"), (ii) except in each case for Licensed Trademarks, which are
covered by clause (i) of this Section 2(a), (A) any name, trademark, service
mark, acronym, domain name (in any top-level domain or other domain) or logo
formerly used by such Licensee that is based on or incorporates any name,
trademark, service mark, acronym, domain name or logo listed on Annex A hereto,
(B) the domain names, corporate names and trademarks listed on Annex B hereto
and any name, trademark, service mark, acronym, domain name (in any top-level
domain or other domain) or logo that is based on or incorporates (x) the letters
"cgu" or "cu" as an abbreviation or acronym or (y) any domain name, corporate
name or trademark listed on Annex B hereto and (C) any names, trademarks,
service marks, acronyms, domain names (in any top-level domain or other domain)
or logos, or any derivations thereof, currently or formerly used by Licensor or
any of its affiliates or related entities outside the United States (the items
in this clause (ii), together with Licensed Trademarks, the "TRADEMARKS"), (iii)
any registrations or applications for registration of any of the foregoing and
(iv) any right to sue and to collect damages for past infringements of any item
referred to in clauses (i), (ii) or (iii) hereof. Each Licensee agrees to use
commercially reasonable efforts to perform any actions necessary to perfect or
record this assignment, including but not limited to executing and delivering
such further documents as may be reasonably requested by Licensor.

         (b)      (i) Each Licensee whose name includes a Licensed Trademark
shall use its commercially reasonable efforts to amend its certificate of
incorporation or comparable organizational document to change its name to a name
that does not include any Trademark or any confusingly similar name.

         (ii)     Each Licensee shall use commercially reasonable efforts to
take such actions as shall be necessary to cease all use of the Trademarks,
including changing all trademark, service mark or domain name use of Trademarks
to marks and domain names that do not include any Trademark or any confusingly
similar mark.

         (c)      Notwithstanding any other provision of this Agreement, each
Licensee that is an Insurance Subsidiary shall use commercially reasonable
efforts to cease using any Trademark as soon as reasonably practicable following
the Closing.

         3.       GRANT OF LICENSE; TRANSFERABILITY. (a) Licensor hereby grants
to each Licensee, and each Licensee hereby accepts from Licensor, a temporary,
personal, non-transferable (except as described below), nonexclusive (except as
set forth in Section 4(c)), royalty-free (except as set forth below) license
(the "LICENSE") to use the Licensed Trademarks, solely in connection with the
property/casualty insurance business of such Licensee (or, in the case of any
Licensee that is not an insurance company, the current types of business of such
Licensee in the Territory (the "PRODUCTS AND SERVICES") for the period of time
from the Closing until (i) in the case of the Insurance Licensees, 18 months
after the Closing; PROVIDED, HOWEVER, that if, at the expiration of such
18-month period, any Insurance Licensee shall not have obtained from an
Insurance Regulator any approval necessary for such Insurance Licensee to change
its name to a name that does not include any Trademark or any confusingly
similar name or


                                     - 3 -
<PAGE>

otherwise to cease using any Licensed Trademark, the License granted to such
Insurance Licensee shall be extended in the applicable state with respect to the
applicable Trademark for a further six months (subject to further extensions of
six months), but only if and for so long as such Insurance Licensee (x) has made
and is making a diligent, good-faith effort to obtain such approval, (y)
provides written notice to Licensor of such extension, and (z) to the extent
reasonable and feasible, permits Licensor or an affiliate of Licensor to
participate fully in the process of seeking and obtaining the necessary
approvals; and PROVIDED, FURTHER, that during any period in which the License
has been so extended, each Insurance Licensee as to which the License has been
extended shall pay to Licensor a royalty equal to $1,000 per month for each
state in which the License has been so extended; and PROVIDED, STILL FURTHER,
that in no event shall the License be extended beyond the fifth anniversary of
the date of this Agreement; and (ii) in the case of the Other Licensees, 180
days after the Closing. Each Licensee shall use the Licensed Trademarks in such
a way as not to confuse third parties but to put them on notice that such
Licensee is the provider and source of the Products and Services. For so long as
Licensees are using the domain name "cguusa.com" pursuant to the License, the
technical and administrative contacts for such domain name shall be persons
designated by Licensees.

         (b)      Licensor and each Licensee hereby agree that the License will
not terminate or otherwise be affected as a result of a sale or transfer of the
stock of (i) any Licensee or (ii) any person owning the stock, directly or
indirectly, of any Licensee. The License shall not be transferable by any
Licensee, except (i) in connection with the sale of all or substantially all of
the assets of such Licensee or (ii) by operation of law as a result of merger or
consolidation, provided that any such transferee under the foregoing clauses (i)
and (ii) agrees in writing to be bound by the terms of this Agreement.

         4.       SCOPE OF LICENSE; RESERVATION OF RIGHTS. (a) Each Licensee
acknowledges that the License applies solely to its use of the Licensed
Trademarks in connection with the Products and Services and that no use is
hereby authorized or permitted of (i) any name, trademark, service mark, domain
name (in any top-level domain or other domain) or logo of Licensor or any of
Licensor's affiliates other than the Licensed Trademarks or (ii) the Trademarks,
in connection with any products or services other than the Products and
Services. Licensee agrees not to use the Licensed Trademarks in partial form
without the prior written consent of Licensor, which Licensor can withhold at
its sole discretion. Each Licensee agrees not to adopt or use any name,
trademark, service mark, domain name (in any top-level domain or other domain),
logo or design confusingly similar to the Licensed Trademarks.

         (b)      Each Licensee acknowledges that the License is non-exclusive
and that, except as set forth in Section 4(c), such Licensee shall not have the
right to limit or restrict Licensor and its affiliates, or their respective
successors, assigns, licensees or transferees, from using the Trademarks.

         (c)      For 18 months from the date hereof, Licensor shall not license
any Licensed Trademark in the Territory to any unaffiliated third party engaged
in the property/casualty insurance business; PROVIDED, HOWEVER, that Licensee
shall be permitted to license one or more


                                     - 4 -
<PAGE>

Licensed Trademarks to Commercial Group Underwriters, Inc. as may be necessary
pursuant to any settlement of the Pending Action (as defined below).

         5.       QUALITY STANDARDS. (a) Each Licensee acknowledges that each of
the Trademarks has established valuable goodwill and is well recognized among
consumers, and that it is of great importance to both Licensor and each Licensee
that, in the sale and provision of the Products and Services, the high standards
and reputation that Licensor has established for Products and Services sold or
marketed in connection with the Licensed Trademarks be maintained by Licensee.
Accordingly, each Licensee represents and warrants that all Products and
Services sold or marketed in connection with the Licensed Trademarks and all
Promotional Materials (as defined in Section 13(b)) shall be of a quality
consistent with the past standards of Licensor (the "LICENSOR QUALITY
STANDARDS").

         (b)      In the event that any Product or Service sold or marketed, or
any Promotional Materials used, by any Licensee in connection with the Licensed
Trademarks is not materially in conformance with the Licensor Quality Standards,
Licensor shall notify such Licensee thereof in writing, specifying in reasonable
detail the facts, circumstances and background of such non-compliance, and such
Licensee shall promptly undertake and shall diligently pursue all remedial
efforts reasonably necessary to bring such Product or Service or promotional
material into conformance with the Licensor Quality Standards and shall achieve
conformity with the Licensor Quality Standards within 15 days after such
notification. Notwithstanding the foregoing, if nonconformity with the Licensor
Quality Standards is not capable of being remedied within such 15 day period,
provided that the relevant Licensee promptly commences and diligently pursues
such remedial steps as are necessary, such Licensee shall have such additional
time as Licensor may grant in its sole discretion to implement such corrective
procedures and bring such Product or Service or promotional material into
conformance with the Licensor Quality Standards. If after such 15 day period,
or, if applicable, such additional period, the Product or Service or promotional
material in question continues not to conform in all material respects to the
Licensor Quality Standards, Licensor may terminate this Agreement as to such
Licensee upon written notice delivered to such Licensee.

         (c)      Each Licensee shall comply with all applicable laws and
regulations and obtain all appropriate government approvals pertaining to its
sale, distribution and advertising of the Products and Services under the
Licensed Trademarks and shall not do or suffer to be done any act or thing that
would impair Licensor's rights in the Trademarks or damage the reputation for
quality inherent in the Trademarks.

         (d)      Each Licensee shall use commercially reasonable efforts to
comply with such other reasonable requests as are made by Licensor to enable
Licensor to ensure that the Licensees' activities under and uses of the Licensed
Trademarks are consistent with the reputation for quality and prestige of the
Trademarks.

         6.       MODIFICATION TO AVOID CONFUSION. Each Licensee agrees that as
soon as reasonably practicable following the date hereof, it shall, when using
the Licensed Trademarks


                                     - 5 -
<PAGE>

in any marketing, promotional or advertising materials, use reasonable
distinguishing features to minimize the potential for confusion between
Licensor's and its affiliates' use of the Trademarks and Licensees' use of the
Licensed Trademarks, by, among other things, (i) prominent use of the phrase ",
a [____________] company" (or similar "tag line", identifying such Licensee as
not being affiliated with Licensor) following the use of any Licensed Trademark,
(ii) a distinctive change in font style and (iii) using logos which are distinct
from and not similar to the logos that are Trademarks.

         7.       NOTICE REQUIREMENTS. For any Licensed Trademark that is
federally registered, each Licensee that is using such Licensed Trademark
pursuant to the License shall give appropriate notice of registration
accompanying all uses of such Licensed Trademark (a small "R" within a circle).

         8.       INSPECTION RIGHTS. To the extent necessary to enable Licensor
to ensure the quality of the Products and Services or Promotional Materials
provided by the Licensees under the Licensed Trademarks, each Licensee shall, at
Licensor's option, (i) permit Licensor to visit such Licensee's offices, work
sites, or other places of business during normal business hours upon reasonable
notice to inspect materials relating to the Products and Services, subject to
reasonable confidentiality restrictions requested by such Licensee, at which
time Licensor may take samples or copies of materials displaying the Licensed
Trademarks or (ii) upon Licensor's request furnish Licensor, subject to
reasonable confidentiality restrictions requested by such Licensee, with samples
or copies of materials relating to the Products and Services displaying the
Licensed Trademarks.

         9.       OWNERSHIP AND PROTECTION OF TRADEMARKS. (a) Each Licensee
acknowledges Licensor's ownership of and exclusive right to use the Trademarks
and the goodwill associated therewith, and, except as provided in this
Agreement, no Licensee has any right to use the Trademarks. Each Licensee
further acknowledges that all of such Licensee's use of the Licensed Trademarks
pursuant to this Agreement and all the goodwill generated thereby will inure to
the benefit of Licensor.

         (b)      Nothing contained in this Agreement shall be construed as an
assignment or grant to any Licensee of any right, title, or interest in or to
any of the Licensed Trademarks, it being understood that all rights relating
thereto are reserved by Licensor, except for the License to the extent, and
subject to the restrictions, specifically provided herein.

         (c)      No Licensee shall (i) challenge Licensor's title or rights in
and to any of the Licensed Trademarks in any jurisdiction (whether or not inside
the United States of America) or challenge the validity of this License or of
any of the Licensed Trademarks, (ii) contest the fact that such Licensee's
rights under this Agreement are solely those of a licensee and shall cease upon
the expiration of the License or earlier termination of this Agreement, (iii)
represent that it has any right, title or interest in the reputation and
goodwill of Licensor, (iv) represent that it has any right, title or interest in
the Licensed Trademarks other than the rights expressly granted by this
Agreement or (v) do or cause to be done any act adversely affecting


                                     - 6 -
<PAGE>

the value of the Licensed Trademarks or the reputation and goodwill of Licensor
or its affiliates. No Licensee shall file or prosecute any trademark or service
mark application or applications to register any of the Licensed Trademarks or
any alternate form thereof (or any confusingly similar marks) or any application
to register any of the Licensed Trademarks or any alternate form thereof (or any
confusingly similar marks) as domain names. Notwithstanding anything to the
contrary in this Agreement, the provisions of this Subsection 9(c) shall survive
the termination of this Agreement.

         10.      INDEMNIFICATION. (a) Each Licensee shall jointly and severally
hold Licensor, its affiliates and their respective directors, officers,
employees, agents and representatives (collectively, "LICENSOR INDEMNIFIED
PARTIES") harmless and indemnify the Licensor Indemnified Parties against any
and all liabilities, losses, damages, expenses (including reasonable attorneys'
fees and costs), claims, demands or actions (collectively, "DAMAGES") to which
any of them may be subject arising out of or based upon any Licensee's use of
the Licensed Trademarks, and will jointly and severally reimburse the Licensor
Indemnified Parties for any and all expenses reasonably incurred by any of them
in connection with investigating and/or defending against any such Damages;
PROVIDED, HOWEVER, that such indemnification shall not extend to any Damages to
the extent such Damages arise out of or are based upon the infringement or
alleged infringement of the trademark or copyright or other proprietary right of
any third party (including without limitation damages arising out of the action
COMMERCIAL GROUP UNDERWRITERS, INC. V. CGU CORPORATION, ET AL. in the United
States District Court for the Eastern District of California (the "PENDING
ACTION")) by reason of the Licensees' use, in accordance with this Agreement, of
the Licensed Trademarks.

         (b)      Licensor will indemnify, defend and hold harmless each
Licensee, its affiliates and their respective directors, officers, employees,
agents and representatives (collectively, "LICENSEE INDEMNIFIED PARTIES") from
any Damages to which any of them may be subject by reason of its use, in
accordance with the terms of this Agreement, of the Licensed Trademarks, to the
extent that such Damages arise out of or are based upon the infringement or
alleged infringement of the trademark or copyright or other proprietary right of
any third party (including without limitation any Damages arising out of the
Pending Action), and will reimburse the Licensee Indemnified Parties for any and
all expenses reasonably incurred by any of them in connection with investigating
and/or defending against any such Damages. For purposes of this Section 10(b),
"Damages" shall not include any amount in respect of lost profits that any
Licensee may allege to suffer or have suffered in connection with any matter for
which any Licensee would be entitled to indemnification pursuant to the first
sentence of this Section 10(b).

         (c)      The party seeking indemnification under this Section 10 (the
"INDEMNIFIED PARTY") agrees to give the party from which such indemnification is
sought (the "INDEMNIFYING PARTY") notice in writing of the assertion of any
claim or demand made by, or any action, proceeding or investigation instituted
by, any person not a party to this Agreement (a "THIRD PARTY CLAIM") in respect
of which indemnity may be sought under this Section 10 promptly after receipt by
such Indemnified Party of written notice of the Third Party Claim; PROVIDED,


                                     - 7 -

<PAGE>

HOWEVER, that failure to give such notice shall not affect the indemnification
provided hereunder except to the extent the Indemnifying Party shall have been
actually prejudiced as a result of such failure (except that the Indemnifying
Party shall not be liable for any expenses incurred during the period in which
the Indemnified Party failed to give such notice). Thereafter, the Indemnified
Party shall deliver to the Indemnifying Party, promptly after the Indemnified
Party's receipt thereof, copies of all notices and documents (including court
papers) received by the Indemnified Party relating to the Third Party Claim.

         (d)      If a Third Party Claim is made against an Indemnified Party,
the Indemnifying Party will be entitled to participate in the defense thereof
and, if it so chooses, to assume the defense thereof with counsel selected by
the Indemnifying Party; PROVIDED, HOWEVER, that such counsel is not reasonably
objected to by the Indemnified Party. Should the Indemnifying Party so elect to
assume the defense of any Third Party Claim, the Indemnifying Party shall be
deemed to have acknowledged liability for any Losses arising from such Third
Party Claim. Licensor has assumed the defense with respect to the Pending
Action. The Indemnifying Party will not as long as it conducts such defense be
liable to the Indemnified Party for legal expenses subsequently incurred by the
Indemnified Party in connection with the defense thereof unless the Indemnified
Party shall have been advised by counsel that there are actual or potential
conflicts of interest between the Indemnifying Party and the Indemnified Party
(in which case the Indemnifying Party shall be required to pay the reasonable
fees and expenses of not more than one separate counsel, who shall be reasonably
acceptable to the Indemnifying Party, for all Indemnified Parties collectively).
If the Indemnifying Party assumes such defense, the Indemnified Party shall have
the right to participate in the defense thereof and to employ counsel, at its
own expense, separate from the counsel employed by the Indemnifying Party, it
being understood that the Indemnifying Party shall control such defense. The
Indemnifying Party shall be liable for the fees and expenses of counsel employed
by the Indemnified Party for any period during which the Indemnifying Party has
not assumed the defense thereof (other than during any period in which the
Indemnified Party shall have not yet given notice of the Third Party Claim as
provided above). If the Indemnifying Party chooses to defend or prosecute any
Third Party Claim, all of the parties hereto shall cooperate in the defense or
prosecution thereof. Such cooperation shall include the retention and (upon the
Indemnifying Party's request) the provision to the Indemnifying Party of records
and information which are reasonably relevant to such Third Party Claim, and
making employees available at no cost on a mutually convenient basis to provide
additional information and explanation of any material provided hereunder. The
Indemnifying Party shall not settle, compromise or discharge any Third Party
Claim by agreeing to any remedy affecting the Indemnified Party (other than any
payment of money that is entirely paid by the Indemnifying Party) without the
prior written consent of the Indemnified Party, not to be unreasonably withheld.
Whether or not the Indemnifying Party shall have assumed the defense of a Third
Party Claim, the Indemnified Party shall not admit any liability with respect
to, or settle, compromise or discharge, such Third Party Claim without the
Indemnifying Party's prior written consent (which consent shall not be
unreasonably withheld).


                                     - 8 -
<PAGE>

         (e)      The amount of any Damages for which indemnification is
provided under this Agreement shall be (i) increased to take account of any tax
cost incurred (grossed up for such increase) by the Indemnified Party arising
from the receipt of indemnity payments hereunder and (ii) reduced to take
account of any tax benefit realized by the Indemnified Party arising from the
incurrence or payment of any such Damages. Such tax cost or tax benefit, as the
case may be, shall be computed for any year using the Indemnified Party's actual
tax liability with and without (i) the receipt of any indemnification payments
made pursuant to this Agreement and (ii) the incurrence or payment of any
Damages for which indemnification is provided under this Agreement in such year.
In the event that the Indemnified Party actually realizes a tax cost or tax
benefit for a year(s) subsequent to the year in which the indemnity payment is
made, the Indemnifying Party shall pay the amount of such tax cost or the
Indemnified Party shall pay the amount of such tax benefit, as the case may be,
in such subsequent year(s).

         (f)      Notwithstanding anything to the contrary in this Agreement,
this Section 10 shall survive termination or expiration of this Agreement.

         11.      INFRINGEMENT PROCEEDINGS. Each party shall notify the others
promptly of any apparent infringement or other unauthorized use of the Licensed
Trademarks by others that comes to such party's attention; PROVIDED, HOWEVER,
that Licensor shall not have any obligation to notify any Licensee of any
apparent infringement or other unauthorized use of the Licensed Trademarks
outside the Territory. The right to institute and prosecute actions for
infringement of the Licensed Trademarks is reserved exclusively to Licensor, and
Licensor shall have the right to join any Licensee in any such action as a
formal party. Any such action shall be conducted at Licensor's expense. Each
Licensee shall use commercially reasonably efforts to assist Licensor and
(except as described in the immediately following sentence) at Licensor's
expense in any such action brought by Licensor. The Licensees may at their own
expense be represented by counsel of their own choosing in connection with any
such action brought by Licensor. Licensor shall be entitled to retain all sums
recovered in such proceedings, whether by judgment, settlement or otherwise. It
is understood, however, that Licensor is not obligated to institute and
prosecute any such actions in any case in which it, in its sole judgment, may
consider it inadvisable to do so. If Licensor declines, after a request by any
Licensee, to institute and prosecute any action for infringement of the Licensed
Trademarks, Licensees may institute and prosecute such an action at their own
expense, and Licensor shall have the right, but shall be under no obligation, to
join in, or assist in the institution or prosecution of, any such action.

         12.      NO AGENCY, JOINT VENTURE OR PARTNERSHIP. (a) No Licensee shall
be deemed by virtue of this Agreement to be the agent or legal representative of
Licensor nor shall any Licensee have by virtue of this Agreement any right or
authority to pledge the credit of or incur any obligation, expressed or implied,
on behalf of Licensor. Neither this Agreement nor the use of the Trademarks by
any Licensee shall create, or be deemed to create, any responsibility or
liability on the part of Licensor for the acts of any Licensee.


                                     - 9 -
<PAGE>

                  (b)      Notwithstanding anything herein to the contrary, the
parties hereby acknowledge and agree that it is their intention and
understanding that the transactions contemplated hereby do not in any way
constitute or imply the formation of a joint venture or partnership between
Licensor and any of the Licensees.

         13.      TERMINATION. (a) Except as expressly provided herein, this
Agreement shall automatically terminate as to all Licensees in the event that:

                  (i) Any Licensee fails to comply in any material respect with
                  any material provision of this Agreement and the
                  non-compliance is not remedied within 20 days after Licensor
                  gives written notice of such non-compliance; PROVIDED that the
                  provisions of Section 5(b) of this Agreement, and not this
                  Section 13(a)(i), shall govern in the case of any termination
                  for non-compliance with the Licensor Quality Standards; or

                  (ii) Any Licensee becomes subject to dissolution, liquidation,
                  bankruptcy, insolvency, statutory reorganization, receivership
                  or similar proceedings, or if creditors of any Licensee take
                  over its management, or if any Licensee otherwise enters into
                  any arrangement with creditors, or makes an assignment for the
                  benefit of creditors; or

                  (iii) Subject to permitted transfers under Subsection 3(b)
                  hereof, any Licensee attempts to assign, sublicense or
                  otherwise transfer this Agreement or any of such Licensee's
                  rights under this Agreement.

         (b)      Upon the expiration or termination of this Agreement, all
rights to use the Licensed Trademarks and the goodwill associated therewith of
each Licensee hereunder shall terminate immediately and revert automatically to
Licensor. Upon the expiration or termination of this Agreement, each Licensee
agrees (i) to discontinue immediately any and all use of the Licensed Trademarks
and any marks confusingly similar thereto, (ii) to cooperate with Licensor or
its agents and to take any actions necessary to effectuate the termination of
rights and reversion to Licensor, (iii) to remove all uses of the Licensed
Trademarks from all printed materials, advertising, promotional or display
materials, stationery, sales documents and any other items bearing the Licensed
Trademarks ("PROMOTIONAL MATERIALS") that are in the possession or control of
the Licensees, to take all actions necessary to prevent or stop the
dissemination or use by any person authorized to use any Promotional Materials
and to provide to Licensor or destroy (with such destruction certified in
writing by a senior executive officer of such Licensee) any remaining
Promotional Materials, (iv) to redirect, in a manner satisfactory to all
parties, all internet domain traffic to the URL "cguusa.com" to an alternative
domain name that is not a Trademark to be selected by Licensees and (v) to take
all actions as may be necessary to cause the technical and administrative
contacts for the domain name "cguusa.com" to be changed to persons designated by
Licensor. Notwithstanding the foregoing sentence, each Licensee shall be
entitled, in the event of the expiration or termination of this Agreement, to
continue to make use of the Licensed Trademarks solely in


                                     - 10 -
<PAGE>

connection with its servicing of policies bearing the Licensed Trademarks in
effect as of the date of expiration or termination.

         14.      DISPUTE RESOLUTION; ENFORCEMENT. (a) In the event the parties
are unable to agree upon any matters arising under this Agreement, the disputed
matter will be referred in the first instance to a senior officer of Licensor
and a senior officer of the relevant Licensee (or of a company designated by
such Licensee), who shall attempt to resolve the dispute in good faith in a
manner consistent with the terms of this Agreement. If such officers are unable
to resolve the dispute in this manner within a reasonable period, the parties
may pursue judicial remedies with respect to such dispute.

         (b)      The parties agree that irreparable damage would occur in the
event that any of the provisions of this Agreement were not performed in
accordance with their specific terms or were otherwise breached. It is
accordingly agreed that the parties shall be entitled to an injunction or
injunctions to prevent breaches of this Agreement and to enforce specifically
the terms and provisions of this Agreement in any court of the United States or
any state court which in either case is located in the City of New York (any
such federal or state court, a "NEW YORK COURT"), in addition to any other
remedy to which they are entitled at law or in equity. In addition, each of the
parties hereto (a) consents to submit itself exclusively to the personal
jurisdiction of any New York Court in the event any dispute arises out of this
Agreement or any of the transactions contemplated by this Agreement and (b)
agrees that it will not attempt to deny or defeat such personal jurisdiction or
venue by motion or other request for leave from any such New York Court. Each
party further agrees that service of any process, summons, notice or document by
U.S. registered mail to such party's respective address set forth above shall be
effective service of process for any action, suit or proceeding in New York with
respect to any matters to which it has submitted to jurisdiction in this Section
14(b).

         15.      NOTICES. All notices, requests, claims, demands and other
communications under this Agreement shall be in writing and shall be delivered
personally, by facsimile (which is confirmed as provided below) or by overnight
courier (providing proof of delivery) to the parties at the following addresses
(or at such other address for a party as shall be specified by like notice):

         If to any Licensee, to:

                  [Name of Licensee]
                  One Beacon Street
                  Boston, Massachusetts  02108
                  Attention:  General Counsel
                  Telephone:   (617) 725-7178
                  Telecopy:   (617) 725-7177

                  with a copy to:


                                     - 11 -
<PAGE>

                  White Mountains Insurance Group, Ltd.
                  12 Church Street
                  Suite 22A
                  Hamilton HM11
                  Bermuda
                  Attention:  Ray Barrette
                  Telephone:
                  Telecopy:

                  and to:

                  White Mountains Insurance Group, Ltd.
                  80 South Main Street
                  Hanover, NH  03755
                  Attention:  Michael Paquette
                  Telephone:
                  Telephone:  603-643-4562

                  and to:

                  Cravath, Swaine & Moore
                  Worldwide Plaza
                  825 Eighth Avenue
                  New York, NY  10019
                  Attention:  Philip A. Gelston
                  Telephone:  212-474-1000
                  Telecopy:  212-474-3700

         If to Licensor, to:

                  CGNU plc
                  St. Helens
                  1 Undershaft
                  London EC3P 3DQ
                  Attention:  Group Company Secretary
                  Telephone:  011-44-207-662-2051
                  Telecopy:  011-44-207-662-7700


                                     - 12 -

<PAGE>

                  with a copy to:

                  LeBoeuf, Lamb, Greene & MacRae, L.L.P.
                  125 West 55th Street
                  New York, New York 10019
                  Attention: Robert S. Rachofsky
                  Telephone:  (212) 424-8000
                  Telecopy:  (212) 424-8500

Notice given by personal delivery or overnight courier shall be effective upon
actual receipt. Notice given by facsimile shall be confirmed by appropriate
answer back and shall be effective upon actual receipt if received during the
recipient's normal business hours, or at the beginning of the recipient's next
business day if not received during the recipient's normal business hours. All
notices by facsimile shall be confirmed promptly after transmission in writing
by personal delivery or overnight courier.

         16.      COUNTERPARTS. This Agreement may be executed in two or more
counterparts, each of which will be deemed an original, but all of which will
constitute one and the same instrument, and shall become effective when such
counterparts have been signed by each of the parties and delivered to the other
parties.

         17.      GOVERNING LAW. This Agreement shall be governed by and
construed in accordance with the federal laws of the United States of America as
they apply to trademark matters and in accordance with the laws of the State of
New York as applied to contracts entered into and to be performed entirely in
the State of New York.

         18.      ENTIRE AGREEMENT. This Agreement constitutes the entire
agreement of the parties with respect to the subject matter hereof and
supersedes all previous oral or written agreements between the parties.

         19.      AMENDMENTS, WAIVERS, ETC. This Agreement may not be released,
waived, discharged, altered, amended, supplemented or renewed except by a
writing signed by duly authorized representatives of the parties to be charged.
No delay on the part of any party in exercising any right, power or privilege
hereunder shall operate as a waiver thereof, nor shall any waiver on the part of
any party of any right, power or privilege, nor any single or partial exercise
of any such right, power or privilege, preclude any further exercise thereof or
the exercise of any other such right, power or privilege.

         20.      ASSIGNMENT; BINDING EFFECT; THIRD-PARTY BENEFICIARIES. Except
as otherwise set forth herein, neither this Agreement nor any of the rights,
interests or obligations under this Agreement shall be assigned, in whole or in
part, by operation of law or otherwise by any Licensee without the prior written
consent of Licensor, and any such purported assignment that is not consented to
shall be null and void. Subject to the preceding sentence, this Agreement will
be binding upon, inure to the benefit of and be enforceable by, the parties and


                                     - 13 -
<PAGE>

their respective successors and assigns. This Agreement is not intended to
confer upon any person other than the parties hereto any rights or remedies.

         21.      INVALID PROVISIONS. Whenever possible, each provision or
portion of any provision of this Agreement will be interpreted in such manner as
to be effective and valid under applicable law, but if any provision or portion
of any provision of this Agreement is held to be invalid, illegal or
unenforceable in any respect under any applicable law or rule in any
jurisdiction, such invalidity, illegality or unenforceability will not affect
any other provision or portion of any provision in such jurisdiction, and this
Agreement will be reformed, construed and enforced in such jurisdiction as if
such invalid, illegal or unenforceable provision or portion of any provision had
never been contained herein.


                                     - 14 -
<PAGE>

         IN WITNESS WHEREOF, this Agreement has been duly executed and delivered
by the duly authorized officers of Licensor and each Licensee, effective as of
the date first written above.

                                        CGNU plc


                                        By:_____________________________________
                                        Name:
                                        Title:

                                        [add signature blocks for Licensees]


                                        By:_____________________________________
                                        Name:
                                        Title:


                                     - 15 -
<PAGE>

                                     Annex A

name and designs for each of the following:

         CGU
         Commercial Union
         CU
         General Accident
         GA
         CGUUSA

phrase "Hand in Hand" and any associated designs

phrase "It's not a promise until you keep it" and any associated designs

cguusa.com (as trademark, corporate name and domain name)

[bowler hat; walking man design]

<PAGE>

                                                      Annex B

each of the following, as trademark, corporate name and domain name:
         cgu.com
         cguinsurance.com
         cuusa.com
         cgunp.com
         cgu-hawkeye.com
         cgu-insurance.net
         cgueasyissue.com
         cgulifelink.com
         cgulifeusa.com
         cgulifeusaagents.com
         cueasyissue.com
         culife.com
         culifeusa.com
         culifeusaagents.com
         culny.com
         cgutsadirect.com
         tsaannuities.com
         cgulifelink.cc
         cguview.com
         cguview.net
         cguviewusa.com
         cguviewusa.net

<PAGE>

                                                                       EXHIBIT G

                           Term Sheet for Holdco Notes

Issuer:                    Holdco (TACK Holding Corp.)

Holders:                   Sellers, pro rata to their pre-closing equity
                           interest in the Company

Security:                  Subordinated Note

Subordination:             Subordinated to senior debt of Buyer

Principal                  Amount: $210 million

Maturity:                  Six months from Closing Date

Interest Rate:             400 basis points over the rate from time to time in
                           effect under the Lehman Senior Bank Loan, payable
                           upon maturity

Settlement:                Principal and interest to be settled at maturity in
                           cash. However, at the election of Holdco, Holdco may
                           settle principal and interest at maturity (unless an
                           event of default shall have occurred and be
                           continuing) in common stock of Holdco or, subject to
                           "Vote" below, in common stock of White Mountains
                           ("WTM"). In either case, such settlement shall only
                           be permitted if such common stock shall be validly
                           issued, fully paid and nonassessable. If settled in
                           Holdco common stock, such common stock shall be
                           valued for purposes of such settlement at its sale
                           price to unaffiliated equity investors pursuant to
                           the term sheet attached hereto as Annex A (the "Term
                           Sheet"). If settled in WTM common stock, such common
                           stock shall be valued at $174 1/2 per share.

                           In no event, however, will Sellers receive an amount
                           of common stock of Holdco or WTM that would require
                           Sellers or any parent to file a request for approval
                           of acquisition of control with any U.S. insurance
                           regulator; to the extent such limit would be
                           exceeded, the remaining amount must be settled in
                           cash. However, Sellers will use their commercially
                           reasonable efforts to file and seek approval of
                           disclaimers of control; if all necessary disclaimers
                           are approved, the full amount may be settled in
                           common stock.

<PAGE>

Stockholder Protections:   If settled in Holdco common stock, each Seller shall
                           be entitled to the same stockholder protection rights
                           as any other Equity Investor (currently set forth in
                           the Term Sheet), except that (subject to compliance
                           with applicable law) either Seller may at any time
                           transfer the common stock of Holdco held by it to a
                           third party (provided that such third party is
                           reasonably acceptable to Holdco) which shall be
                           deemed an Equity Investor with the stockholder
                           protections remaining attached to such common stock.

                           If settled in WTM common stock, Sellers shall not be
                           entitled to any governance rights. However, Sellers
                           will be entitled to 3 demand and (subject to normal
                           cutbacks) unlimited piggyback registration rights
                           under a customary registration rights agreement to be
                           entered into in such event between WTM and Sellers.
                           Such registration rights may be exercised at any time
                           after settlement.

Vote:                      Settlement in WTM common stock would require approval
                           of the shareholders of WTM under the NYSE rules.
                           Shareholder approval of issuance of WTM common stock
                           in settlement of the Holdco Notes will not be a
                           condition precedent to Closing under the Agreement.

Covenants:                 Customary anti-dilution protection.

Events of Default:         Failure to pay when due; bankruptcy events;
                           cross-acceleration to other debt.

Other:                     Holdco Notes are freely transferable (subject to
                           applicable law). If sold to an unaffiliated Equity
                           Investor, the common stock settlement right set forth
                           under "Settlement" shall be revised to be, at
                           Holdco's option, into Holdco common stock (with
                           governance rights as set forth above) at the value
                           set forth above or into WTM common stock at a value
                           equal to the conversion or exchange price then
                           prevailing, if any, for conversion or exchange by
                           other Equity Investors of Holdco common stock into
                           WTM common stock, with governance rights as
                           applicable to such other Equity Investors upon such
                           conversion or exchange.


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