TERRA NOVA BERMUDA HOLDING LTD
8-K, 1999-08-20
FIRE, MARINE & CASUALTY INSURANCE
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<PAGE>

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                      SECURITIES AND EXCHANGE COMMISSION
                            WASHINGTON, D.C. 20549

                                 _____________

                                   FORM 8-K

                                CURRENT REPORT

                    Pursuant to Section 13 or 15(d) of the
                        Securities Exchange Act of 1934

                       Date of Report : August 15, 1999
                       (Date of earliest event reported)

                      Terra Nova (Bermuda) Holdings Ltd.

            -------------------------------------------------------
            (Exact name of registrant as specified in its charter)

      Bermuda                     1-13832                   N/A
- -------------------          ----------------      ---------------------

(State or other              (Commission File        (I.R.S. Employer
jurisdiction of              Number)               Identification No.)
incorporation)

         Richmond House, 12 Par-la-Ville Road, Hamilton, HM08, Bermuda

              ---------------------------------------------------
              (Address of principal executive offices) (Zip Code)

              Registrant's telephone number, including area code:
                                (441) 292-7731

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

================================================================================
<PAGE>

Item 5.   Other Information.
          ------------------

          On August 15, 1999, Terra Nova (Bermuda) Holdings Ltd. (the "Company")
and Markel Corporation, a Virginia corporation ("Markel"), entered into an
Agreement and Plan of Merger and Scheme of Arrangement (the "Merger Agreement"),
providing, subject to the terms and conditions set forth therein, for (i) the
merger ("Merger") of MINT Sub Ltd., a corporation to be organized under the laws
of Virginia as a wholly-owned subsidiary of Virginia Holdings Inc. ("MINT"), a
corporation to be organized under the laws of Virginia, with and into Markel and
(ii) a Scheme of Arrangement between the Company and certain of its shareholders
(the "Scheme"). Upon completion of the Merger and the Scheme, each of the
Company and Markel will be a wholly-owned subsidiary of MINT, which will be
renamed Markel Corporation.

          Pursuant to the Scheme and the Merger, existing holders of the
Company's common shares will receive at their election 0.184 of a share of
common stock of MINT ("MINT Shares") or $34.00 in cash for each of their shares,
subject to pro-ration to the extent the cash or stock elections exceed certain
maximum amounts specified in the Merger Agreement, and existing holders of the
common stock of Markel will receive one (1) MINT Share for each of their shares.

          In connection with the Merger, certain shareholders of the Company
and certain shareholders of Markel have entered into stockholders agreements,
dated August 15, 1999 (the "Stockholders Agreements"), with the Company and
Markel, pursuant to which such shareholders have agreed to vote their stock in
favor of the Merger Agreement and the transactions contemplated thereby.

          Also on August 15, 1999, certain shareholders of the Company have
entered into a registration rights agreement (the "Registration Rights
Agreement") with Markel, pursuant to which Markel has agreed to cause MINT to
grant such shareholders registration rights with respect to the MINT Shares they
will receive in the transaction.

          The consummation of the transactions contemplated by the Merger
Agreement is subject to regulatory approvals and the satisfaction or waiver of a
number of other conditions as more fully described in the Merger Agreement.
<PAGE>

          Copies of the Merger Agreement, the Stockholders Agreements, the
Registration Rights Agreement and the related press release are attached as
exhibits hereto and are incorporated herein by reference

Item 7.   Financial Statements and Exhibits.
          ---------------------------------

          (c)  Exhibits

99.1      Agreement and Plan of Merger and
          Scheme of Arrangement, dated as of
          August 15, 1999, between Terra Nova
          (Bermuda) Holdings Ltd. and
          Markel Corporation

99.2      Stockholders Agreement, dated as
          of August 15, 1999, among Markel
          Corporation, Terra Nova (Bermuda)
          Holdings Ltd. and the shareholders of
          Terra Nova (Bermuda) Holdings Ltd.
          named therein

99.3      Stockholders Agreement, dated as of August 15,
          1999, among Markel Corporation, Terra Nova
          (Bermuda) Holdings Ltd. and the
          shareholders of Markel Corporation
          named therein

99.4      Registration Rights Agreement, dated as of
          August 15, 1999, among Virginia Holdings
          Inc., Markel Corporation and the shareholders
          of Terra Nova (Bermuda) Holdings Ltd.
          named therein

99.5      Press Release, dated August 16, 1999

                                       2
<PAGE>

                                   SIGNATURE

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

                         TERRA NOVA (BERMUDA) HOLDINGS LTD.
                         (Registrant)


                         By:  /s/ Jean M. Waggett
                             --------------------------------
                           Name:   Jean M. Waggett
                           Title:  Senior Vice President and
                                   General Counsel


Date: August 20, 1999

                                       3
<PAGE>

                                 EXHIBIT INDEX


Exhibit
Number    Exhibit                                                  Page
- ------    -------                                                  ----

99.1      Agreement and Plan of Merger and
          Scheme of Arrangement, dated as of
          August 15, 1999, between Terra Nova
          (Bermuda) Holdings Ltd. and
          Markel Corporation..................................

99.2      Stockholders Agreement, dated as
          of August 15, 1999, among Markel
          Corporation, Terra Nova (Bermuda)
          Holdings Ltd. and the shareholders of
          Terra Nova (Bermuda) Holdings Ltd.
          named therein.......................................

99.3      Stockholders Agreement, dated as of August 15,
          1999, among Markel Corporation, Terra Nova (Bermuda)
          Holdings Ltd. and the shareholders of Markel
          Corporation named therein...........................

99.4      Registration Rights Agreement, dated as of
          August 15, 1999, among Virginia Holdings
          Inc., Markel Corporation and the shareholders
          of Terra Nova (Bermuda) Holdings Ltd.
          named therein.......................................

99.5      Press Release, dated August 16, 1999................

                                       4

<PAGE>

                                                                    Exhibit 99.1

                                                                  CONFORMED COPY

================================================================================




                             AGREEMENT AND PLAN OF
                       MERGER AND SCHEME OF ARRANGEMENT


                                    BETWEEN



                              MARKEL CORPORATION

                                      AND

                      TERRA NOVA (BERMUDA) HOLDINGS LTD.








                          Dated as of August 15, 1999

================================================================================
<PAGE>

                               TABLE OF CONTENTS

<TABLE>
<CAPTION>
                                                                       Page
<S>                                                                    <C>
                                   ARTICLE I
                                  DEFINITIONS

1.1  Definitions .....................................................  2

                                  ARTICLE II
                             THE MERGER AND SCHEME

2.1  The Scheme ...................................................... 10
2.2  The Merger ...................................................... 10
2.3  Effective Time .................................................. 10
2.4  Effects of the Merger and the Scheme ............................ 11
2.5  Articles and Bylaws ............................................. 11
2.6  Directors ....................................................... 11
2.7  Officers ........................................................ 11
2.8  Treatment of Shares ............................................. 12
2.9  Conversion of Sub Shares ........................................ 12
2.10 Shareholders Approval ........................................... 12
2.11 Election Procedure .............................................. 13
2.12 Issuance of MINT Common Stock and Payment of Cash and Stock
     Consideration; Proration ........................................ 14
2.13 Exchange of BB Common Share Certificates ........................ 18
2.14 Stock Options ................................................... 20
2.15 Best Efforts To Increase Maximum Cash Consideration ............. 21
2.16 Closing ......................................................... 21
2.17 Tax Consequences ................................................ 22
2.18 VA Governance ................................................... 22

                                  ARTICLE III
                     REPRESENTATIONS AND WARRANTIES OF BB

3.1  Organization, Standing and Corporate Power ...................... 22
3.2  Subsidiaries .................................................... 22
3.3  Capital Structure................................................ 23
3.4  Authority; Noncontravention ..................................... 23
3.5  SEC Documents; Undisclosed Liabilities; SAP Statements .......... 25
3.6  Liabilities and Reserves ........................................ 26
</TABLE>
<PAGE>

<TABLE>
<S>                                                                    <C>
3.7  Investment Advisory and Investment Company Matters .............   26
3.8  Information Supplied ...........................................   27
3.9  Absence of Certain Changes or Events ...........................   27
3.10 Litigation .....................................................   28
3.11 Labor Relations ................................................   28
3.12 Benefit Plans ..................................................   28
3.13 Tax Matters ....................................................   29
3.14 No Excess Parachute Payments ...................................   30
3.15 Compliance with Applicable Laws ................................   30
3.16 Properties .....................................................   31
3.17 Voting Requirements ............................................   31
3.18 Takeover Statutes...............................................   31
3.19 Brokers ........................................................   31
3.20 Related Party Transactions......................................   31
3.21 Material Contracts .............................................   32
3.22 Intellectual Property ..........................................   32
3.23 No Regulatory Disqualifications ................................   32
3.24 Insurance Ratings...............................................   32
3.25 Reinsurance, etc................................................   32
3.26 Derivatives ....................................................   33


                                  ARTICLE IV
                     REPRESENTATIONS AND WARRANTIES OF VA


4.1  Organization, Standing and Corporate Power .....................   33
4.2  Subsidiaries ...................................................   33
4.3  Capital Structure...............................................   33
4.4  Authority; Noncontravention ....................................   34
4.5  SEC Documents; Undisclosed Liabilities; SAP Statements..........   35
4.6  Liabilities and Reserves .......................................   37
4.7  Investment Advisory and Investment Company Matters .............   37
4.8  Information Supplied ...........................................   37
4.9  Absence of Certain Changes or Events ...........................   38
4.10 Litigation .....................................................   38
4.11 Labor Relations ................................................   38
4.12 Benefit Plans ..................................................   39
4.13 Tax Matters ....................................................   39
4.14 No Excess Parachute Payments ...................................   40
4.15 Compliance with Applicable Laws ................................   40
4.16 Properties .....................................................   40
4.17 Voting Requirements ............................................   41
4.18 Takeover Statutes...............................................   41
</TABLE>

                                      ii
<PAGE>

<TABLE>
<S>                                                                    <C>
4.19 Brokers .......................................................... 41
4.20 Related Party Transactions ....................................... 41
4.21 Material Contracts ............................................... 41
4.22 Intellectual Property ............................................ 42
4.23 No Regulatory Disqualifications .................................. 42
4.24 Insurance Ratings................................................. 42
4.25 Reinsurance, etc.................................................. 42
4.26 Derivatives ...................................................... 42


                                   ARTICLE V
                             ADDITIONAL AGREEMENTS


5.1  Conduct of Business .............................................. 44
5.2  Additional Financial Statements .................................. 47
5.3  No Solicitation; Notification .................................... 47
5.4  Investigation of Business and Properties ......................... 49
5.5  Regulatory Matters ............................................... 49
5.6  Investment Portfolio ............................................. 50
5.7  Confidentiality .................................................. 50
5.8  Books and Records................................................. 51
5.9  Fees and Expenses................................................. 51
5.10 Preparation of the Form S-4 and the Proxy Statement/Prospectus;
     Shareholders Meetings............................................. 52
5.11 Public Announcements ............................................. 54
5.12 Efforts to Consummate ............................................ 54
5.13 Employee Benefits ................................................ 55
5.14 Agreements With Respect to Affiliates ............................ 55
5.15 Indemnification, Exculpation and Insurance ....................... 56
5.16 NYSE Listing and Delisting........................................ 57
5.17 Formation of MINT and Sub ........................................ 57


                                  ARTICLE VI
                        CONDITIONS TO OBLIGATIONS OF VA


6.1  Representations and Warranties ................................... 58
6.2  Material Adverse Change .......................................... 58
6.3  Performance of this Agreement .................................... 58
6.4  Injunction ....................................................... 58
6.5  Shareholder Approval ............................................. 59
6.6  Governmental Approvals ........................................... 59
6.7  NYSE Listing ..................................................... 59
6.8  HSR Act .......................................................... 59
</TABLE>
                                      iii
<PAGE>

<TABLE>
<S>                                                                    <C>
6.9  Form S-4.......................................................... 59
6.10 Tax Opinion ...................................................... 59
6.11 Frustration of Closing Conditions ................................ 59

                                  ARTICLE VII
                        CONDITIONS TO OBLIGATIONS OF BB


7.1  Representations and Warranties ................................... 60
7.2  Material Adverse Change .......................................... 60
7.3  Performance of this Agreement .................................... 60
7.4  Injunction ....................................................... 60
7.5  Shareholder Approval ............................................. 60
7.6  Governmental Approvals ........................................... 60
7.7  NYSE Listing ..................................................... 60
7.8  HSR Act .......................................................... 61
7.9  Form S-4.......................................................... 61
7.10 Tax Opinion ...................................................... 61
7.11 Frustration of Closing Conditions ................................ 61

                                 ARTICLE VIII
                NON-SURVIVAL OF REPRESENTATIONS AND WARRANTIES


8.1  Non-Survival of Representations and Warranties ................... 61

                                  ARTICLE IX
                                  TERMINATION


9.1  Termination ...................................................... 61
9.2  Restructuring .................................................... 63
9.3  Procedure: Effect of Termination ................................. 63


                                   ARTICLE X
                              GENERAL PROVISIONS


10.1 Notices .......................................................... 63
10.2 Interpretation ................................................... 64
10.3 Entire Agreement ................................................. 64
10.4 No Third Party Beneficiaries ..................................... 65
</TABLE>

                                      iv
<PAGE>

<TABLE>
<S>                                                                    <C>
10.5  Successors and Assigns .......................................... 65
10.6  Severability .................................................... 65
10.7  Amendment ....................................................... 65
10.8  Extension; Waiver................................................ 65
10.9  Counterparts .................................................... 66
10.10 Governing Law ................................................... 66
10.11 Disclosure Letter................................................ 66
</TABLE>

                                       v
<PAGE>

                             AGREEMENT AND PLAN OF
                       MERGER AND SCHEME OF ARRANGEMENT


     THIS AGREEMENT AND PLAN OF MERGER AND SCHEME OF ARRANGEMENT (the
"Agreement") dated as of August 15, 1999, is made between MARKEL CORPORATION, a
Virginia corporation ("VA") and TERRA NOVA (BERMUDA) HOLDINGS LTD., a Bermuda
corporation ("BB").

                                   RECITALS

     A.   This Agreement provides for (i) the merger ("Merger") of MINT Sub Ltd.
                                       -
("Sub"), a corporation to be organized under the laws of Virginia as a wholly-
owned subsidiary of Virginia Holdings Inc. ("MINT"), a corporation to be
organized under the laws of Virginia, with and into VA and (ii) a Scheme of
                                                            --
Arrangement between BB and its shareholders (the "Scheme").  Pursuant to the
Merger and the Scheme, the holders of outstanding capital stock of BB and VA,
respectively, will receive the applicable consideration set forth herein.  Upon
consummation of the Merger and the Scheme, each of BB and VA will be a wholly-
owned subsidiary of MINT, which will change its name to "Markel Corporation."

     B.   The respective Boards of Directors of VA and BB have determined that
it is advisable and in the best interests of their respective shareholders that
each of VA and BB become a subsidiary of MINT pursuant to, and have approved,
the Merger and the Scheme.

     C.   In furtherance of such determination, VA will cause MINT to be formed
and MINT will cause Sub to be formed in accordance with the terms hereof.

     D.   The parties intend that, for U.S. federal income tax purposes, (i) the
Merger shall qualify as a tax-free reorganization under Section 368(a) of the
Internal Revenue Code of 1986, as amended (the "Internal Revenue Code") and (ii)
the Merger together with the Scheme, when integrated, will be treated as a
transaction described in Section 351 of the Internal Revenue Code.

     E.   Concurrently with the execution and delivery of this Agreement and as
a condition and inducement to VA's and BB's willingness to enter into this
Agreement, certain shareholders of BB and VA have entered into Stockholders
Agreements dated as of the date of this Agreement (the "Stockholders
Agreements"), pursuant to which, among other things, such shareholders have
agreed to vote the BB Common Shares or VA Common Shares, as the case may be,
held by them in favor of the Merger, the Scheme and the transactions
contemplated hereby.

     F.   Concurrently with the execution and delivery of this Agreement, VA has
entered into a Registration Rights Agreement (the "Registration Rights
Agreement") with certain shareholders of BB, pursuant to which VA has agreed to
cause MINT to grant such shareholders certain registration
<PAGE>

rights with respect to the MINT Common Shares to be acquired by such
shareholders upon the consummation of the Scheme.

     NOW, THEREFORE, in consideration of the foregoing and the representations,
warranties and agreements herein contained, the parties hereto agree as follows:

                                   ARTICLE I
                                  DEFINITIONS

     1.1  Definitions.  The following terms, as used herein, have the following
meanings:

          "Acquisition Proposal" has the meaning set forth in Section 5.3(a).

          "Action" means any complaint, claim, prosecution, indictment, action,
suit, arbitration, investigation, governmental audit, inquiry or proceeding by
or before any Governmental Authority.

          "Affiliate" of a Person means a Person who, directly or indirectly
through one or more intermediaries, controls, is controlled by, or is under
common control with, such Person.

          "Aggregate Fractional Amount" has the meaning set forth in Section
2.13(e).

          "Assets" of a Person means all of such Person's properties, assets and
rights of any kind, whether tangible or intangible, real or personal, owned by
such Person or in which such Person has any interest whatsoever.

          "BB Acquisition Proposal" has the meaning set forth in Section 5.9(b).

          "BB Common Shares" means, collectively, the Class A Ordinary Shares
and the Class B Ordinary Shares of BB.

          "BB Designated Insurance Approvals" has the meaning set forth in
Section 3.4

          "BB Directors Unit Plan" means the Terra Nova (Bermuda) Holdings
Ltd.1997 Non-Employee Directors Share Unit Plan.

          "BB Directors Unit Plan Cash Amount" means the aggregate amount of
cash to be paid to participants in the BB Directors Unit Plan pursuant to the
provisions of Section 2.14(b) hereof.

          "BB Disclosure Letter" has the meaning set forth in Article III.

                                       2
<PAGE>

          "BB Exchange Ratio" means 0.184 of a MINT Common Share for each BB
Common Share.

          "BB Insurance Subsidiaries" has the meaning set forth in Section
3.5(b).

          "BB Intellectual Property Rights" means the Intellectual Property
owned by BB or any of its Subsidiaries.

          "BB Option" means each option granted prior to the date of this
Agreement under a BB Option Plan that is outstanding as of the Effective Time.

          "BB Option Plans" means the Terra Nova (Bermuda) Holdings Ltd.
Approved Executive Share Option Scheme and the Terra Nova (Bermuda) Holdings
Ltd. Non Approved Executive Share Option Scheme.

          "BB SAP Statement" has the meaning set forth in Section 3.5(b).

          "BB SEC Documents" has  the meaning set forth in Section 3.5 (a).

          "BB Shareholder Approval" has the meaning set forth in Section 3.17.

          "BB Shareholders Meeting" has the meaning set forth in Section
5.10(c).

          "BCA" means the Bermuda Companies Act of 1981, as amended.

          "Books and Records" means all books, records, lists, ledgers, files,
reports, plans, drawings and operating records of every kind relating to VA or
BB or their respective Subsidiaries, their Assets, their Business operations,
customers, suppliers and personnel, including, without limitation, (i) all
corporate books and records of VA or BB and their respective Subsidiaries, disk
or tape files, printouts, runs or other computer-based information and VA's and
BB's and their respective Subsidiaries' interest in all computer programs
required to access, and the equipment containing, all such computer-based
information, (ii) all product, business and marketing plans, (iii) all
environmental control records and (iv) all sales, maintenance and production
records.

          "Business" means, as the context suggests, the insurance business
conducted by VA or BB and their respective Subsidiaries taken as a whole.

          "Business Day" means any day except a Saturday, Sunday or other day on
which commercial banks in Hamilton, Bermuda, Richmond, Virginia or New York, New
York are authorized by Law to close.

          "Cash Consideration" has the meaning set forth in Section 2.8(a).

                                       3
<PAGE>

          "Cash Election" has the meaning set forth in Section 2.11(a).

          "Cashout Election" has the meaning set forth in Section 2.14(a).

          "Certificate" has the meaning set forth in Section 2.13(c).

          "Claim" has the meaning set forth in Section 5.15(a).

          "Closing" has the meaning set forth in Section 2.16.

          "Closing Date" has the meaning set forth in Section 2.16.

          "Common Stock Consideration" has the meaning set forth in Section
2.8(b).

          "Contract" means any written agreement, contract, lease, note, loan,
evidence of indebtedness, purchase order, letter of credit, franchise agreement,
undertaking, covenant not to compete, employment agreement, license, instrument,
obligation, commitment, purchase and sales order, quotation and other executory
commitment, which pursuant to its terms has not expired, terminated or been
fully performed by the parties thereto.

          "Conversion Election" has the meaning set forth in Section 2.14(a).

          "Defaulting Party" has the meaning set forth in Section 5.9(f).

          "Derivatives" has the meaning set forth in Section 3.26.

          "Directors Plan Grantor Trust" means the trust created under that
certain Trust Agreement, effective as of May 13, 1997, between BB and Codan
Trust Company Limited, as Trustee, with respect to the BB Directors Unit Plan.

          "Disclosure Letters" means the BB Disclosure Letter and the VA
Disclosure Letter.

          "DLJ" means Donaldson, Lufkin & Jenrette Securities Corporation.

          "Effective Time" has the meaning set forth in Section 2.3(b).

          "Election" has the meaning set forth in Section 2.11(a).

          "Election Deadline" has the meaning set forth in Section 2.11(c).

          "Election Form" has the meaning set forth in Section 2.11(b).

                                       4
<PAGE>

          "Employee Benefit Plan" of a Person means each benefit plan maintained
or contributed to by such Person or with respect to which such Person may
reasonably be expected to have any liability, which provides (or is intended to
provide) benefits to the current or former directors or employees of such Person
(or other service providers to such Person), including, without limitation, each
pension, retirement or deferred compensation plan, incentive compensation plan,
share plan, unemployment compensation plan, vacation pay, severance pay, bonus
or benefit arrangement, insurance, medical or hospitalization program, sickness,
accident, disability or death benefit program or any other fringe benefit
arrangement.

          "Employee Plan Grantor Trust" means the trust created under that
certain Trust Agreement II, made as of May 13, 1997, between BB and Codan Trust
Company Limited, as Trustee.

          "Encumbrance" means any claim, lien, pledge, option, charge, easement,
security interest, deed of trust, mortgage, right-of-way, encroachment,
conditional sales agreement, encumbrance or other right of third parties,
whether voluntarily incurred or arising by operation of Law, and includes any
agreement to give any of the foregoing in the future, and any contingent sale or
other title retention agreement or lease in the nature thereof.

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

          "Exchange Agent" means Chase Mellon or such other Person as may be
selected by VA and is reasonably acceptable to BB.

          "Expense Payment" has the meaning set forth in Section 5.9(b).

          "Form S-4" means the registration statement on Form S-4 filed with the
SEC relating to the issuance of MINT Common Shares in the Merger and Scheme.

          "GAAP" means generally accepted accounting principles in the United
States of America, as in effect from time to time, consistently applied.

          "Governmental or Regulatory Authority" means any federal, state,
local, foreign, supernational or supranational court or tribunal, governmental,
regulatory or administrative agency, department, bureau, authority or commission
or arbitral panel or any self or other regulatory body or authority (including
the Council of Lloyds) having responsibility or oversight, direct or indirect,
over the operations of VA, BB or any of their respective Subsidiaries.

          "HSR Act" means the Hart-Scott-Rodino Antitrust Improvements Act of
1976, as amended.

          "Indemnified Liabilities" has the meaning set forth in Section
5.15(a).

                                       5
<PAGE>

          "Indemnified Parties" has the meaning set forth in Section 5.15(a).

          "Insurance Laws" means Laws applicable to the business and products of
insurance.

          "Intellectual Property" means all patents, trademarks, trade names,
service marks, copyrights and any applications, therefor, technology, know-how,
computer software programs or applications, and tangible or intangible
proprietary information or materials, trademarks, trade names, service marks and
copyrights.

          "Internal Revenue Code" has the meaning set forth in the Recitals.

          "Investment Advisers Act" has the meaning set forth in Section 3.7(a).

          "Investment Company Act" has the meaning set forth in Section 3.7(a).

          "knowledge of BB" means the actual knowledge of any of John Dwyer,
Nigel Rogers, William Wedlake, Jean Waggett and John O'Neill.

          "knowledge of VA" means the actual knowledge of any of Alan Kirshner,
Steven Markel, Anthony Markel, Darrell Martin, Greg Nevers and Brad Kiscaden.

          "Laws" means laws, statutes, ordinances, regulations, rules, policies,
guidelines, orders, directives, bye-laws or codes of conduct of any Governmental
or Regulatory Authority.

          "Licenses and Permits" means all registrations, applications, filings,
certifications, notices, orders, licenses, permits, approvals, consents,
qualifications, authorizations and waivers of any Governmental or Regulatory
Authority.

          "Lloyd's" means the Corporation of Lloyds, the Society of Lloyd's or
the Council of Lloyd's, as the context requires.

          "Lloyd's Acts" means the Lloyd's Acts 1871 - 1982, together with the
bye-laws and regulations passed pursuant thereto.

          "Lloyd's Member" means an underwriting member of Lloyd's, whether
corporate or individual.

          "Mailing Date" has the meaning set forth in Section 2.11(b).

          "Material Adverse Effect" or "Material Adverse Change" means as to any
Person  any material adverse effect on or change with respect to (A) the
business, operations, assets, liabilities, condition (financial or otherwise) or
results of operations of such Person and its Subsidiaries, taken as a whole, or
(B) the right or ability of such Person or any of its Subsidiaries to consummate
the

                                       6
<PAGE>

transactions contemplated hereby, other than any such effect or change resulting
from this Agreement or the announcement of the transactions contemplated hereby.

          "Maximum Cash Consideration" means an amount equal to 40% of the sum
of the Scheme Consideration and Option Scheme Consideration (determined using a
value for Stock Consideration and Option Stock Consideration equal to the value
for each VA Common Share used in setting the BB Exchange Ratio), as such
percentage may be increased pursuant to Section 2.15, minus the Aggregate
Fractional Amount and the BB Directors Unit Plan Cash Amount.

          "Maximum Cash Conversion Number" has the meaning set forth in Section
2.12(a).

          "Maximum Stock Consideration" means 60% of the sum of the Scheme
Consideration and Option Scheme Consideration (determined using a value for
Stock Consideration and Option Stock Consideration equal to the value for each
VA Common Share used in setting the BB Exchange Ratio), as such percentage may
be decreased pursuant to Section 2.15.

          "Maximum Stock Conversion Number" has the meaning set forth in Section
2.12(a).

          "Merger" has the meaning set forth in Recital A.

          "MINT Common Shares" means the shares of common stock, no par value,
of MINT.

          "Non-Electing BB Options" has the meaning set forth in Section
2.12(g).

          "Non-Electing Shares" has the meaning set forth in Section 2.12(g).

          "Notice of Exercise" has the meaning set forth in Section 2.14(a).

          "Notice of Superior Proposal" has the meaning set forth in Section
5.3(b).

          "NYSE" means the New York Stock Exchange, Inc.

          "Octavian Plan" means the Octavian Syndicate Management Ltd. 1996
Option Plan.

          "Option Cash Consideration" has the meaning set forth in Section
2.14(a).

          "Option Scheme Consideration" has the meaning set forth in Section
2.14(a).

          "Option Stock Consideration" has the meaning set forth in Section
2.14(a).

          "Other Agreements" means the Registration Rights Agreement and the
Stockholders Agreements.

                                       7
<PAGE>

          "Person" means an individual, a corporation, a partnership, an
association, a trust or any other entity or organization, including a
governmental or political subdivision or an agency or instrumentality thereof.

          "Personnel" of a corporation means all directors, officers and
employees of such corporation and its Subsidiaries.

          "Proxy Statement/Prospectus" has the meaning set forth in Section 3.4.

          "Registrar" has the meaning set forth in Section 2.3.

          "Registration Rights Agreement" has the meaning set forth in the
Recitals.

          "Reinsurance Agreement" means a reinsurance, coinsurance, excess
insurance, ceding of insurance, assumption of insurance or indemnification or
similar arrangement with respect to insurance.

          "SAR" has the meaning set forth in Section 3.3.

          "SCC" has the meaning set forth in Section 2.3.

          "Scheduled Closing Date" has the meaning set forth in Section 2.16.

          "Scheme" has the meaning set forth in Recital A.

          "Scheme Consideration" has the meaning set forth in Section 2.8(a).

          "SEC" means the Securities and Exchange Commission.

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

          "Share Units" means Share Units as defined in the BB Directors Unit
Plan.

          "SSB" means Salomon Smith Barney, Inc..

          "Statutory Accounting Practices" means the accounting practices
prescribed or permitted by the applicable Insurance Laws.

          "Stock Election" has the meaning set forth in Section 2.11(a).

          "Stockholders Agreements" has the meaning set forth in Recital E.

                                       8
<PAGE>

          "Subsidiary" with respect to any party to this Agreement, means any
corporation or other business entity, whether or not incorporated, of which at
least 50% of the securities or interests having, by their terms, ordinary voting
power to elect members of the Board of Directors, or other persons performing
similar functions with respect to such entity, is held directly or indirectly by
such party.

          "Superior Proposal" has the meaning set forth in Section 5.3(b).

          "Taxes" shall mean any taxes of any kind, including but not limited to
those on or measured by or referred to as income, gross receipts, capital,
sales, use, ad valorem, franchise, profits, license, withholding, payroll,
employment, excise, severance, stamp, occupation, premium, value added, property
or windfall profits taxes, customs, duties or similar fees, assessments or
charges of  any kind whatsoever, together with any interest and any penalties,
additions to tax or additional tax amounts imposed with respect thereto by any
Governmental or Regulatory Authority.

          "Tax Return" shall mean any return, report or statement required to be
filed with any Governmental or Regulatory Authority with respect to Taxes,
including any schedule or attachment thereto or amendment thereof.

          "Termination Fee" has the meaning set forth in Section 5.9(b).

          "Third-Party Intellectual Property Rights" means Intellectual Property
owned by any third party.

          "VA Acquisition Proposal" has the meaning set forth in Section 5.9(d).

          "VA Common Shares" means the Common Shares, no par value, of VA.

          "VA Designated Insurance Approvals" has the meaning set forth in
Section 4.4(a).

          "VA Disclosure Letter" has the meaning set forth in Article IV.

          "VA Insurance Subsidiaries" has the meaning set forth in Section
4.5(b).

          "VA Intellectual Property Rights" means the Intellectual Property
owned by VA or any of its Subsidiaries.

          "VA SAP Statements" has the meaning set forth in Section 4.5(b).

          "VA SEC Documents" has the meaning set forth in Section 4.5(a).

          "VA Shareholder Approval" has the meaning set forth in Section 4.17.

                                       9
<PAGE>

          "VA Shareholders Meeting" has the meaning set forth in Section
5.10(b).

          "VA Surviving Corporation" has the meaning set forth in Section 2.2.

          "VSCA" means the Virginia Stock Corporation Act, as amended.


                                  ARTICLE II
                             THE MERGER AND SCHEME

     2.1  The Scheme. (a) Upon the terms and subject to the satisfaction or
waiver, if permissible, of the conditions hereof and subject to the Supreme
Court of Bermuda (the "Court") exercising its discretion and sanctioning the
Scheme pursuant to Section 99 of the BCA and making such facilitating orders as
are appropriate pursuant to Section 99 of the BCA, at the Effective Time all of
the issued share capital of BB shall be cancelled and redeemed for the
applicable Scheme Consideration and 40,000,000 newly issued Class A Ordinary
Shares, par value $5.80, of BB (the "New Ordinary Shares") shall be allotted,
issued and transferred to MINT in consideration of the issuance of the Scheme
Consideration.

          (b)  As soon as practicable after the date hereof, (i) BB, will (x)
                                                              -            -
cause an application to be made to the Court requesting the Court to summon such
class meetings of members of BB as the Court may direct, (y) convene such class
                                                          -
meetings, and obtain the approval required under Section 99 of the BCA and,
subject to such approvals being obtained, (z) cause a petition to be presented
                                           -
to the Court seeking the sanctioning of a Scheme of Arrangement pursuant to
Section 99 of the BCA and file such other documents as are required to be duly
filed with the Court to effect the Scheme.

          (c)   BB shall, subject to the provisions of this Agreement, do all
things necessary to effect the Scheme including but not limited to the holding
of extraordinary general meetings of its shareholders to approve the Scheme.

     2.2  The Merger. Upon the terms and subject to the satisfaction or waiver,
if permissible, of the conditions hereof, in accordance with the VSCA, at the
Effective Time, Sub shall be merged with and into VA (the "Merger"). Following
the Merger, the separate corporate existence of Sub shall cease and VA shall
continue as the surviving corporation (the "VA Surviving Corporation") and shall
be governed by the VSCA.

     2.3  Effective Time. (a) On the Closing Date, the parties shall cause the
Merger to be consummated by causing articles of merger with respect to the
Merger to be executed and filed with the Clerk of the State Corporation
Commission of the Commonwealth of Virginia (the "SCC") in accordance with the
relevant provisions of the VSCA. The Merger shall become effective at the time
of issuance of the certificate of merger by the SCC (such time and date being
referred to as the "Merger Effective Time").

                                      10
<PAGE>

          (b)  On the Closing Date, subject to receipt of orders from the Court
sanctioning the Scheme, and subject to the terms and provisions of this
Agreement, the order sanctioning the Scheme shall be duly filed with the
Registrar of Companies of Bermuda (the "Registrar"). The Scheme shall become
effective upon the filing of the order of the Court with respect to the Scheme
with the Registrar (the time of such filing being the "Scheme Effective Time"
and, together with the Merger Effective Time, the "Effective Time").

     2.4  Effects of the Merger and the Scheme. (a) The Merger shall have the
effects set forth in the Section 13.1-721 of the VSCA.

          (b)  As of the Scheme Effective Time, BB shall be a wholly owned
Subsidiary of MINT and the holders of BB Common Shares (other than the New
Ordinary Shares) shall only have the right to receive the Scheme Consideration
as set forth in Section 2.8(a)..

     2.5  Articles and Bylaws. (a) The Articles of Incorporation of VA, as in
effect immediately prior to the Effective Time, shall be the Articles of
Incorporation of the VA Surviving Corporation with the exception of the change
in name, and thereafter may be amended as provided therein and in the VSCA. The
Bylaws of VA, as in effect immediately prior to the Effective Time, shall be the
Bylaws of the VA Surviving Corporation, and thereafter may be amended as
provided therein.

          (b)  At the Effective Time, the Memorandum of Association of BB shall
be the same as the existing Memorandum of Association of BB until thereafter
amended or restated as provided therein and by law. At the Effective Time, the
Bylaws of BB shall be amended as necessary to permit the allotment, issue and
transfer of the New Ordinary Shares to MINT.

     2.6  Directors. (a) The directors of Sub immediately prior to the Effective
Time shall be the initial directors of the VA Surviving Corporation and shall
hold office until their respective successors are duly elected and qualified, or
their earlier death, resignation or removal.

          (b)  The parties hereto shall procure that at the Scheme Effective
Time, only those directors of BB and such additional persons, in each case who
shall be designated by MINT shall remain or be elected to serve as directors of
BB, each of such directors to hold office in accordance with the applicable
provisions of the articles of association of BB and until their successors shall
be elected or appointed and shall duly qualify.

     2.7  Officers. The officers of BB immediately prior to the Effective Time
shall be the initial officers of BB following the Scheme Effective Time and
shall hold office in accordance with its By-laws. The officers of VA immediately
prior to the Merger Effective Time shall be the initial officers of the VA
Surviving Corporation and shall hold office until their respective successors
are duly elected and qualified, or their earlier death, resignation or removal.

                                      11
<PAGE>

     2.8   Treatment of Shares.

           (a) Each BB Common Share outstanding immediately prior to the
Effective Time shall, by virtue of the Scheme and without any action on the part
of the holder thereof, automatically be cancelled, and the holder thereof shall
be entitled to receive the BB Exchange Ratio of a MINT Common Share (the "Common
Stock Consideration") or $34.00 in cash per share without any interest thereon
(the "Cash Consideration" and, together with the Common Stock Consideration, the
"Scheme Consideration") in each case as the holder thereof shall have elected or
deemed to have elected in accordance with, and subject to the limitations set
forth in, Sections 2.11 and 2.12 hereof.

           (b) Each VA Common Share outstanding immediately prior to the Merger
Effective Time (other than VA Common Shares, if any, owned by MINT, Sub, VA or
BB or any Subsidiary of MINT, Sub or VA) shall, by virtue of the Merger and
without any action on the part of the holder thereof, automatically be converted
into the right to receive one (1) MINT Common Share.

           (c) Each VA Common Share owned by MINT, Sub, VA or BB or any
Subsidiary of MINT, Sub, VA or BB, in each case, immediately prior to the Merger
Effective Time, shall, by virtue of the Merger, and without any action on the
part of the holder thereof, automatically be canceled and cease to exist at and
after the Effective Time and no consideration shall be paid with respect
thereto.

           (d) Each share of capital stock of MINT outstanding immediately prior
to the Merger Effective Time shall by virtue of the Merger, and without any
action on the part of the holder thereof, automatically be canceled and cease to
exist at and after the Merger Effective Time and no consideration shall be paid
with respect thereto.

     2.9   Conversion of Sub Shares. The common shares, no par value, of Sub
issued and outstanding immediately prior to the Merger Effective Time shall, by
virtue of the Merger and without any action on the part of the holder thereof,
automatically be converted into and thereafter represent 1,000 validly issued,
fully paid and nonassessable common shares, no par value, of the VA Surviving
Corporation, so that thereafter MINT will be the sole and exclusive owner of the
outstanding common shares of the VA Surviving Corporation.

     2.10  Shareholders' Approval. Except as otherwise provided in Section 5.3,
BB, acting through its Board of Directors (which has recommended approval of the
Scheme and approval and adoption of this Agreement to its shareholders), shall,
in accordance with applicable law, use its best efforts to obtain the approval
of the Scheme and the approval and adoption of this Agreement by its
shareholders. Except as otherwise provided in Section 5.3, VA, acting through
its Board of Directors (which has recommended approval of the Merger and
approval and adoption of this Agreement to its shareholders), shall, in
accordance with applicable law, use its commercially reasonable efforts to
obtain the approval of the Merger and the approval and adoption of this
Agreement by its shareholders.

                                      12
<PAGE>

     2.11  Election Procedure. Each holder (or beneficial owner through
appropriate and customary documentation and instructions) of outstanding BB
Common Shares shall have the right to submit a request specifying the number of
BB Common Shares that such holder desires to have converted into shares of MINT
Common Stock in the Scheme and the number of BB Common Shares that such holder
desires to have converted into the right to receive Cash Consideration in the
Scheme in accordance with the following procedure:

           (a) Subject to Section 2.12, each such holder of BB Common Shares may
specify in a request made in accordance with the provisions of this Section 2.11
(herein called an "Election") (i) the number of BB Common Shares owned by such
holder that such holder desires to have converted into MINT Common Stock in the
Scheme (a "Stock Election") and (ii) the number of BB Common Shares owned by
such holder that such holder desires to have converted into the right to receive
the Cash Consideration in the Scheme (a "Cash Election").

           (b) An election form and other appropriate and customary transmittal
materials in such form as VA and BB shall mutually agree (the "Election Form")
or, as applicable, a form of Notice of Exercise (as defined in Section 2.14)
shall be mailed thirty days prior to the anticipated Effective Time or on such
other date as VA and BB shall mutually agree (the "Mailing Date") to each holder
of record of BB Common Shares and each holder of BB Options not more than five
Business Days prior to the Mailing Date.

           (c) Any Election shall have been made properly only if the Exchange
Agent shall have received, by 5:00 p.m. local time in the city in which the
principal office of such Exchange Agent is located, on the second Business Day
prior to the anticipated Effective Time (or such other time and date as VA and
BB shall mutually agree) (the "Election Deadline"), an Election Form properly
completed and signed and accompanied by certificates for the BB Common Shares to
which such Election Form relates (or customary affidavits and indemnification
regarding the loss or destruction of such certificate or certificates or by an
appropriate guarantee of delivery of such certificates, as set forth in such
Election Form, from a member of any registered national securities exchange or
of the National Association of Securities Dealers, Inc. or a commercial bank or
trust company in the United States provided such certificates are in fact
delivered to the Exchange Agent by the time required in such guarantee of
delivery). Failure to deliver BB Common Shares covered by such a guarantee of
delivery within the time set forth on such guarantee shall be deemed to
invalidate any otherwise properly made Election.

           (d) Any holder of BB Common Shares may at any time prior to the
Election Deadline revoke or change his or her Election by written notice
received by the Exchange Agent prior to the Election Deadline accompanied by a
properly completed and signed, revised Election Form or by withdrawal of his or
her certificates for BB Common Shares, or of the guarantee of delivery of such
certificates, previously deposited with the Exchange Agent. All Elections shall
be revoked automatically if the Exchange Agent is notified in writing by VA or
BB that this Agreement has been terminated. In the event an Election Form is
revoked prior to the Election Deadline, the shares of BB Common Stock
represented by such Election Form shall be promptly returned without charge

                                      13
<PAGE>

to the person submitting the Election Form upon written request to that effect
from the holder who submitted the Election Form. The Exchange Agent shall have
reasonable discretion to determine whether any election, revocation or change
has been properly or timely made and to disregard immaterial defects in the
Election Forms, and any good faith decisions of the Exchange Agent regarding
such matters shall be binding and conclusive. The Exchange Agent shall be under
no obligation to notify any person of any defect in an Election Form.

           (e) Within two Business Days after the Election Deadline, unless the
Effective Time has not yet occurred, in which case within one Business Day prior
to the Effective Time, VA shall cause the Exchange Agent to effect the
allocation among the holders of BB Common Stock and BB Options of rights to
receive MINT Common Stock, Cash Consideration or cash (in respect of a Cashout
Election) in the Scheme in accordance with Sections 2.12 and 2.14.

     2.12  Issuance of MINT Common Stock and Payment of Cash and Stock
Consideration; Proration. The manner in which each outstanding BB Common Share
shall be converted into MINT Common Stock or the right to receive the Cash
Consideration at the Effective Time shall be as set forth in this Section 2.12.
All references to "outstanding" BB Common Shares in Section 2.8(a), Section 2.11
and this Section 2.12 shall mean all BB Common Shares outstanding immediately
prior to the Effective Time, other than BB Common Shares owned by VA, MINT, Sub
or BB or any direct or indirect wholly owned Subsidiary of VA, MINT, Sub or BB.

           (a) As is more fully set forth below, the aggregate number of
outstanding BB Common Shares to be converted into the right to receive the Cash
Consideration pursuant to the Scheme shall not exceed the number of such BB
Common Shares that, when multiplied by the Cash Consideration plus the amount of
cash payable to all holders of BB Options pursuant to a Cashout Election, and
after giving effect to the pro-ration contemplated by Section 2.12(c)(vii),
equals the Maximum Cash Consideration (the "Maximum Cash Conversion Number"). As
is more fully set forth below, the aggregate number of BB Common Shares to be
converted into the right to receive the Common Stock Consideration in the Scheme
shall not exceed the number of such BB Common Shares that, when multiplied by
the Common Stock Consideration plus the number of shares of Mint Common Stock
issuable to all holders of BB Options pursuant to a Option Stock Election, and
after giving effect to the pro-ration contemplated by Section 2.12(e)(vii),
equals the Maximum Stock Consideration (the "Maximum Stock Conversion Number").

           (b) If Cash Elections are received for a number of BB Common Shares
that is equal to or less than the Maximum Cash Conversion Number, each BB Common
Share covered by a Cash Election shall be converted in the Scheme into the right
to receive the Cash Consideration.

           (c) If Cash Elections are received for a number of outstanding BB
Common Shares in the aggregate in excess of the Maximum Cash Conversion Number,
then:

                                      14
<PAGE>

           (i)   Each Non-Electing Share and each outstanding BB Common Share
     for which a Stock Election has been received shall be converted in the
     Scheme into a fraction of a share of MINT Common Stock equal to the BB
     Exchange Ratio;

           (ii)  Each Non-Electing BB Option and each BB Option for which a
     Conversion Election has been received shall receive a number of shares of
     MINT Common Stock calculated pursuant to the formula set forth in subclause
     (ii) of the second sentence of Section 2.14(a).

           (iii) Subject to the provisions of clause (vii) below, the Exchange
     Agent will distribute Cash Consideration with respect to the number of such
     outstanding BB Common Shares equal to the Maximum Cash Conversion Number of
     outstanding BB Common Shares;

           (iv)  Each outstanding BB Common Share covered by a Cash Election and
     not fully converted into the right to receive the Cash Consideration as set
     forth in clause (iii) above shall be converted in the Scheme into the right
     to receive the fraction of a MINT Common Share equal to the BB Exchange
     Ratio;

           (v)   Subject to the provisions of clause (vii) below), the Exchange
     Agent will distribute the Option Cash Consideration pursuant to a Cashout
     Election with respect to that number of BB Options subject to such election
     that, when aggregated with a number of outstanding BB Common Shares subject
     to a Cash Election, would be convertible into the Maximum Cash
     Consideration;

           (vi)  Each outstanding BB Option covered by a Cashout Election and
     not fully converted into the right to receive Option Cash Consideration as
     set forth in clause (v) shall be converted in the Scheme into the right to
     receive the number of MINT Common Shares calculated pursuant to the formula
     set forth in subclause (ii) of the second sentence of Section 2.14(a); and

           (vii) The distributions of Cash Consideration in respect of
     outstanding BB Common Shares and cash in respect of BB Options contemplated
     by the preceding clauses (iii) and (v) shall be made pro rata based on the
     ratio of the Maximum Cash Consideration to the aggregate amount of Cash
     Consideration and cash that would be payable in respect of all outstanding
     BB Common Stares for which Cash Election has been made and all BB Options
     for which a Cashout Election has been made among all outstanding BB Common
     Shares as to which Cash Elections have been made and all BB Options as to
     which Cashout Elections have been made.

           (d) If Stock Elections are received for a number of BB Common Shares
that is equal to or less than the Maximum Stock Conversion Number, each BB
Common Share covered by

                                      15
<PAGE>

a Stock Election shall be converted in the Scheme into a fraction of a share of
Mint Common Shares equal to the BB Exchange Ratio.

           (e) If Stock Elections are received for a number of outstanding BB
Common Shares that is in the aggregate in excess of the Maximum Stock Conversion
Number, then:

               (i)   Each Non-Electing Share and each outstanding BB Common
     Share for which a Cash Election has been received shall be converted into
     the right to receive the Cash Consideration multiplied by the number of
     such BB Common Share;

               (ii)  Each Non-Electing BB Option and each BB Option for which a
     Cashout Election has been received shall be converted into the right to
     receive the Option Cash Consideration pursuant to the formula set forth in
     subclause (i) of the second sentence of Section 2.14(a);

               (iii) Subject to the provisions of clause (vii) below, the
     Exchange Agent will distribute a fraction of a share of Mint Common Stock
     equal to the BB Exchange Ratio with respect to a number of such outstanding
     BB Common Shares equal to the Maximum Stock Conversion Number;

               (iv)  Each outstanding BB Common Share covered by a Stock
     Election and not fully converted into the right to receive Common Stock
     Consideration as set forth in clause (iii) above shall be converted in the
     Scheme into the right to receive the Cash Consideration multiplied by the
     number of such BB Common Shares;

               (v)   Subject to the provisions of clause (vii) below, the
     Exchange Agent will distribute a number of shares of Mint Common Stock
     pursuant to a Conversion Election with respect to that number of BB Options
     subject to such election that, when aggregated with a number of outstanding
     BB Common Shares subject to the Stock Election, would be convertible into
     the Maximum Stock Conversion Number; and

               (vi)  Each outstanding BB Option covered a Conversion Election,
     and not fully converted into the right to receive Option Stock
     Consideration as set forth in clause (v) shall be converted in the Scheme
     into the right to receive Option Cash Consideration calculated pursuant to
     the formula set forth in subclause (i) of the second sentence of Section
     2.14(a); and

               (vii) The distributions of the Common Stock Consideration in
     respect of outstanding BB Common Stock and the Option Stock Consideration
     in respect to the BB Options contemplated by the preceding clauses (iii)
     and (v) shall be

                                      16
<PAGE>

     made pro rata based on the ratio of the Maximum Stock Consideration to the
     aggregate amount of Common Stock Consideration and Option Stock
     Consideration that would be distributable in respect of all outstanding BB
     Common Shares for which a Stock Election has been made and all BB Options
     for which a Conversion Election has been made among all outstanding BB
     Common Shares as to which Stock Elections have been made and all BB Options
     as to which Conversion Elections have been made.

           (f) If Non-Electing Shares or Non-Electing BB Options are not
converted under either Section 2.12(c) or Section 2.12(e), the Exchange Agent
shall distribute with respect to such Non-Electing Shares or Non-Electing BB
Options:

               (i)   Stock Consideration or Option Stock Consideration with
     respect to a number of such Non-Electing Shares and Non-Electing BB
     Options, as the case may be, not in excess of that number that will result
     in the sum of (A) the number of Non-Electing Shares and Non-Electing
     Options converted into MINT Common Shares pursuant to this Section 2.12(f)
     and (B) the number of BB Common Shares and BB Options for which Stock
     Elections and Option Stock Elections have been received equaling the
     Maximum Stock Consideration;

               (ii)  Non-Electing Shares and Non-Electing BB Options not
     converted into the right to receive the Stock Consideration or Option Stock
     Consideration as set forth in the preceding sentence shall be converted in
     the Scheme into the right to receive the Cash Consideration per BB Common
     Share and the Option Cash consideration per BB Option; and

               (iii) The distribution of Stock Consideration and Option Stock
     Consideration or Cash Consideration and Option Cash Consideration
     contemplated by the preceding clauses (i) and (ii) shall be made among all
     Non-Electing Shares and Non-Electing BB Options pro rata based on the ratio
     of (A) in the case of the Stock Consideration and Option Stock
     Consideration, the aggregate Stock Consideration and Option Stock
     Consideration available for distribution pursuant to clause (i) above to
     the aggregate amount of Scheme Consideration that would be allocable to all
     Non-Electing Shares and Non-Electing BB Options if the limitation imposed
     by clause (i) above did not apply, among all Non-Electing Shares and Non-
     Election BB Options, and (B) in the case of Cash Consideration and Option
     Cash Consideration, pro rata among all Non-Electing Shares and Non-Electing
     BB Options to be converted pursuant to clause (ii) of Section 2.12(f).

           (g) For the purposes of this Section 2.12, outstanding BB Common
Shares as to which an Election is not in effect at the Election Deadline shall
be called "Non-Electing Shares" and outstanding BB Options as to which a Notice
of Exercise is not in effect at the Election Deadline shall be called "Non-
Election BB Options". If the Exchange Agent shall determine that any Election is
not

                                      17
<PAGE>

properly made with respect to any outstanding BB Common Shares, such Election
shall be deemed to be not in effect, and the outstanding BB Common Shares
covered by such Election shall, for purposes hereof, be deemed to be Non-
Electing Shares. If VA and BB shall determine that any election of a Cashout
Election or a Conversion Election is not properly made with respect to any BB
Option, such election shall be deemed to be not in effect, and the BB Options
covered by such election shall, for purposes hereof, be deemed Non-Electing BB
Options.

     2.13  Exchange of BB Common Share Certificates.

           (a) Deposit of  Certificates. At the Effective Time, VA and Mint will
               -----------------------
deposit in trust with the Exchange Agent, for the benefit of the holders of BB
Common Shares and BB Options, for exchange in accordance with this Article II,
the aggregate Scheme Consideration and Option Scheme Consideration.

           (b) Permitted Investments. The cash portion of the aggregate Scheme
               ---------------------
Consideration and the aggregate Option Scheme Consideration shall be invested by
the Exchange Agent, as directed by and for the benefit of the VA Surviving
Corporation, provided that such investments shall be limited to direct
obligations of the United States of America, obligations for which the full
faith and credit of the United States of America is pledged to provide for the
payment of principal and interest, commercial paper rated of the highest quality
by Moody's Investor Services, Inc. ("Moody's") or Standard & Poor's Ratings
Group, a division of McGraw-Hill, Inc. ("S&P"), and certificates of deposit
issued by a commercial bank whose long-term debt obligations are rated at least
A2 by Moody's or at least A by S&P, in each case having a maturity not in excess
of one year.

           (c) Exchange Procedures. Upon delivery of a share certificate (each,
               -------------------
a "Certificate") to the Exchange Agent for exchange, together with such other
documents as the Exchange Agent shall require, the holder of such Certificate
shall be entitled to receive in exchange therefor the applicable Scheme
Consideration and the amount of cash in lieu of fractional share interests which
such holder has the right to receive pursuant to the provisions of Section
2.13(e). Upon delivery of a Notice of Exercise or such other documents as the
Exchange Agent shall require, which shall include a written receipt waiving all
of such holder's rights in respect of such BB Option, the BB Option Plans and
the Employee Plan Grantor Trust, the holder of a BB Option shall be entitled to
receive in exchange therefor the applicable Option Scheme Consideration, subject
to reduction for all applicable withholding taxes. In the event of a transfer of
ownership of BB Common Shares which is not registered in the transfer records of
BB, the applicable Scheme Consideration may be paid to a transferee if the
Certificate representing such BB Common Shares is presented to the Exchange
Agent, accompanied by all documents required to evidence and effect such
transfer and by evidence satisfactory to the Exchange Agent that any applicable
stock transfer taxes have been paid or that an exception is applicable. Until
delivered as contemplated by this Section 2.13, each Certificate shall be deemed
at any time after the Effective Time to represent only the right to receive upon
such delivery the applicable Scheme Consideration and cash in lieu of any
fractional MINT

                                      18
<PAGE>

Common Shares as contemplated by this Section 2.13. No interest shall be paid or
accrued on Scheme Consideration.

           (d) Distributions with Respect to Unexchanged Shares. No dividends or
               ------------------------------------------------
other distributions declared or made after the Effective Time with respect to
MINT Common Shares with a record date after the Effective Time shall be paid to
the holder of any undelivered Certificate with respect to the MINT Common Shares
such holder is entitled to receive and no cash payment in lieu of fractional
shares shall be paid to any such holder pursuant to Section 2.13(e), until the
holder of record of such Certificate (or a transferee as described in Section
2.13(c)) shall have delivered such Certificate as contemplated in Section
2.13(c). Subject to the effect of unclaimed property, escheat and other
applicable laws, following delivery of any such Certificate, there shall be paid
to the record holder (or transferee) of the certificates representing whole MINT
Common Shares issued in exchange therefor, without interest, (i) at the time of
such delivery, the amount of any cash payable in lieu of a fractional MINT
Common Share to which such holder (or transferee) is entitled pursuant to
Section 2.13(e) and the amount of dividends or other distributions with a record
date after the Effective Time theretofore paid with respect to such whole MINT
Common Shares and (ii) at the appropriate payment date, the amount of dividends
or other distributions with a record date after the Effective Time but prior to
delivery and a payment date subsequent to delivery payable with respect to such
whole MINT Common Shares, as the case may be.

           (e) No Fractional Shares. No certificates or scrip representing a
               --------------------
fractional MINT Common Share shall be issued upon the delivery for exchange of
Certificates, and such fractional share interests will not entitle the owner
thereof to vote or to any rights of a shareholder of MINT. Each holder of BB
Common Shares or BB Options who would otherwise be entitled to receive a
fractional MINT Common Share will be entitled to receive from the Exchange Agent
in accordance with the provisions of this Section 2.13(e), in lieu thereof, an
amount of cash (without interest) equal to the product of such fractional
interest multiplied by the closing trading price for a MINT Common Share on the
day preceding the Closing Date (the aggregate amount of such cash is the
"Aggregate Fractional Amount").

           (f) Closing of Transfer Books. From and after the Effective Time, the
               -------------------------
stock transfer books of BB with respect to BB Common Shares issued and
outstanding prior to the Effective Time shall be closed and no transfer of any
such shares shall thereafter be made. If, after the Effective Time, Certificates
are presented to BB or the Exchange Agent, as the case may be, they shall be
canceled and exchanged for Scheme Consideration and cash in lieu of fractional
MINT Common Shares as provided in this Article II.

           (g) Termination of Exchange Agent. Any certificates representing MINT
               -----------------------------
Common Shares deposited with the Exchange Agent pursuant to Section 2.13(a) and
not exchanged within one year after the Effective Time pursuant to this Section
2.13 shall be returned by the Exchange Agent to MINT, which shall thereafter act
as Exchange Agent. All cash and investments thereof pursuant to Section 2.13(b)
held at the end of the one year period after the Effective Time shall be
remitted to MINT, after which time any holder of undelivered Certificates shall
look as a

                                      19
<PAGE>

general creditor only to MINT for payment of such funds to which such holder may
be due, subject to applicable law. MINT shall not be liable to any Person for
such shares or funds delivered to a public official pursuant to any applicable
abandoned property, escheat or similar law.

           (h) Affiliates. Notwithstanding anything herein to the contrary,
               ----------
Certificates surrendered for exchange by any "affiliate" (as determined pursuant
to Section 5.14) of BB shall not be exchanged until MINT has received a written
agreement from such Person as provided in Section 5.14 hereof.

     2.14  Stock Options.

           (a) Each BB Option outstanding as of the Effective Time shall be
treated as fully exercisable in accordance with the terms of the applicable BB
Option Plan and stock option agreement. Each holder of any such BB Option may
exercise any such BB Option by delivering a notice of exercise (a "Notice of
Exercise"), the form of which shall be mutually agreeable to VA and BB and which
shall contain a waiver or acknowledgment of full satisfaction of all rights in
respect of such BB Options, the BB Option Plans and the Employee Plan Grantor
Trust, to the Exchange Agent prior to the Election Deadline and requesting that,
in the Scheme, he or she receive in respect of such BB Option (i) the excess of
the Cash Consideration payable in respect of the BB Common Shares issuable in
connection with the exercise of such BB Option over the exercise price payable
in respect of such BB Option (the "Option Cash Consideration"), (a "Cashout
Election"), and/or (ii) a number of shares of MINT Common Stock (the "Option
Stock Consideration" and, together with the Option Cash Consideration, the
"Option Scheme Consideration"), equal to (x) the quotient of (A) the amount of
such excess divided by (B) the amount of the Cash Consideration (a "Conversion
Election") multiplied by (y) the BB Exchange Ratio of a MINT Common Share, in
each case in full and complete satisfaction of his or her rights in respect of
such BB Option. Subject to Section 2.12, the net amount of the cash payable in
connection with a Cashout Election shall be paid by the Exchange Agent pursuant
to Section 2.13(c) without interest to the holder as soon as reasonably
practicable following the Effective Time, but in no event more than 5 days
following the Effective Time, but subject to reduction for all applicable
withholding taxes. Prior to the Effective Time, BB shall take such actions,
including, without limitation, action by appropriate committee of the Board of
Directors of BB, necessary to permit the application of the provisions of
Section 2.12 with respect to any Non-Electing BB Options.

           (b) At the Effective Time, BB shall take such action as may be
necessary to pay to each participant in the BB Directors Unit Plan an amount
equal to the sum of the number of Share Units credited to such participant's
account under the Plan multiplied by the Cash Consideration plus the amount of
any other cash credited to such participant's account in accordance with the
terms of such Plan. BB shall use commercially reasonable efforts to terminate,
immediately prior to the Effective Time, the Directors Plan Grantor Trust,
distribute all of the assets held in the Trust to BB and obtain a waiver or
acknowledgment of full satisfaction of all rights in respect of such Plan and
the Directors Plan Grantor Trust from each participant receiving a distribution
from such Plan.

                                      20
<PAGE>

           (c) BB shall use commercially reasonable efforts to terminate,
immediately prior to the Effective Time, the Employee Plan Grantor Trust and to
distribute all of the assets held in the Trust to BB.

           (d) Prior to the Effective Time, BB and VA shall use commercially
reasonable efforts to procure that (i) the Octavian Plan be terminated in
consideration of the payment of such consideration as the participants in such
Plan and VA shall mutually agree or (ii) if the Octavian Plan is not terminated
pursuant to clause (i), the terms of the Octavian Plan be amended such that (x)
                                                                             -
the book value of BB for purposes of determining the option grants for the year
2000 be set at the first to occur of (A) December 31, 1999 or (B) the Closing
                                      -                        -
Date and (y) the participants in such Plan will, from and after the Effective
          -
Time, be entitled to receive, in lieu of options with respect to BB Common
Shares, options to purchase a number of Mint Common Shares equal to the product
of the number of BB Common Shares subject to such options multiplied by the BB
Exchange Ratio provided that Mint shall in no event be obligated to issue
options in respect of Mint Common Shares in excess of 600,000 BB Common Shares
multiplied by the BB Exchange Ratio in the aggregate.  The exercise price or
prices for such replacement options will be set such that the aggregate exercise
price payable in respect of the options on BB Common Shares will equal the
aggregate exercise price payable in respect of the exercise of such replacement
options.

           (e) Each outstanding option in respect of VA Common Shares shall from
and after the Effective Time represent an option in respect of an equal number
of MINT Common Shares on the same terms and conditions.

     2.15  Best Efforts To Increase Maximum Cash Consideration. VA shall use
best efforts to increase the Maximum Cash Consideration to an amount equal to
50% of the sum of the Scheme Consideration and Option Scheme Consideration prior
to the mailing of the Proxy Statement/Prospectus in connection with the VA
Shareholders Meeting and to enter into an amendment to this Agreement to effect
such increase. To the extent VA shall so increase the Maximum Cash
Consideration, VA may, at its election, decrease the Maximum Cash Consideration,
but in no event shall the sum of the percentages referred to in Maximum Cash
Consideration and Maximum Stock Consideration, as so increased or decreased, be
less than 100%.

     2.16  Closing. On the date which is the third business day after the
satisfaction of the last of the unsatisfied conditions set forth in Articles VI
and VII hereof, but not prior to December 3, 1999 (it being understood that this
limitation is for the benefit of, and may be waived by, VA) (or such other time
as the parties may mutually agree) (the "Scheduled Closing Date"), a closing
(the "Closing") will be held at the offices of Debevoise & Plimpton, 875 Third
Avenue, New York, New York 10022 (or such other place as the parties may agree)
for the purpose of confirming all of the foregoing; provided, that nothing in
                                                    --------
this Section 2.16 shall be deemed to affect (i) the conditions to the respective
parties' obligations hereunder contained in Articles VI and VII hereof or (ii)
Article IX hereof. Notwithstanding the foregoing, the date and time at which
such Closing actually occurs are herein referred to as the "Closing Date."

                                      21
<PAGE>

     2.17  Tax Consequences. It is intended by the parties hereto that the
Merger will qualify as a reorganization within (i) the meaning of Section 368(a)
of the Internal Revenue Code and (ii) the Merger together with the Scheme, when
integrated, will be treated as a transaction described in Section 351 of the
Internal Revenue Code. The parties hereto hereby adopt this Agreement as a "plan
of reorganization" within the meaning of Section 1.368-1(c) of the United States
Treasury Regulations.

     2.18  VA Governance.

           (a) At the Effective Time, the Articles of Incorporation and By-laws
of MINT shall be in the form of the Articles of Incorporation and By-Laws of VA.

           (b) Board of Directors; Committees. VA shall use its best efforts to
cause Nigel Rogers and two other persons to be designated by BB, subject to the
approval of VA, to be elected members of the Board of Directors of MINT
immediately after the Effective Time.


                                  ARTICLE III
                     REPRESENTATIONS AND WARRANTIES OF BB

     As an inducement to VA to enter into this Agreement, and except as
otherwise disclosed to VA in a letter delivered to it prior to the execution
hereof (the "BB Disclosure Letter") BB hereby makes, as of the date hereof and
as of the Closing Date, the following representations and warranties to VA:

     3.1   Organization, Standing and Corporate Power. Each of BB and its
Subsidiaries is a corporation duly organized, validly existing and, where
relevant under applicable law, is in good standing under the laws of the
respective jurisdiction in which it is incorporated and has the requisite
corporate power and authority to carry on its business as now being conducted.
Each of BB and its Subsidiaries is duly qualified or licensed 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 or licensing
necessary, other than in such jurisdictions where the failure to be so qualified
or licensed, individually or in the aggregate, is not reasonably likely to have
a Material Adverse Effect on BB. BB has made available to VA complete and
correct copies of its Certificate of Incorporation, Memorandum of Association
(or other organizational documents) and Bye-laws and the articles of association
(or other organizational documents) and bylaws of its Subsidiaries, in each case
as amended to the date hereof.

     3.2   Subsidiaries. Section 3.2 of the BB Disclosure Letter lists each
subsidiary of BB. All the outstanding shares of capital stock of, or other
ownership interests in, each such Subsidiary have been validly issued and are
fully paid and nonassessable and, except as set forth in Section 3.2 of the BB
Disclosure Letter, are owned directly or indirectly by BB, free and clear of all
liens and free

                                      22
<PAGE>

of any other restriction (including any restriction on the right to vote, sell
or otherwise dispose of such capital stock or such other ownership interest).

     3.3   Capital Structure. Section 3.3 of the BB Disclosure Letter sets
forth, as of the date hereof, the authorized capital stock of BB, the number of
such shares issued and outstanding, the number of such shares held by BB in its
treasury, the number of such shares subject to options and the BB Option Plans
under which such options were granted, and the number of such shares reserved
for issuance under each such BB Option Plan. There are no outstanding stock
appreciation rights ("SARs") or rights (other than the BB Options listed in
Section 3.3 of the BB Disclosure Letter) to receive shares of the capital stock
of BB on a deferred basis granted under any of BB Option Plans or otherwise.
Section 3.3 of the BB Disclosure Letter sets forth a true and complete list of
all options to acquire shares of BB's capital stock, the number of shares
subject to each such option, the grant dates and the exercise prices thereof.
All outstanding shares of capital stock of BB are, and all shares which may be
issued pursuant to this Agreement or BB Option Plans will be, when issued, duly
authorized, validly issued, fully paid and nonassessable and not subject to
preemptive rights. As of the date of this Agreement, no bonds, debentures, notes
or other indebtedness of BB having the right to vote (or convertible into, or
exchangeable for, securities having the right to vote) on any matters on which
shareholders of BB may vote are issued or outstanding. Except as set forth
above, as of the date of this Agreement, there are no preemptive or other
outstanding securities, options, warrants, calls, rights, conversion rights,
redemption rights, repurchase rights, commitments, agreements, arrangements or
undertakings of any kind to which BB or any of its Subsidiaries is a party or by
which any of them is bound obligating BB or any of its Subsidiaries to issue,
deliver or sell, or cause to be issued, delivered or sold, additional shares of
capital stock or other voting securities of BB or any of its Subsidiaries, or
giving any person a right to subscribe for or acquire, any securities of BB or
any of its Subsidiaries or obligating BB or any of its Subsidiaries to issue,
grant, extend or enter into any such security, option, warrant, call, right,
conversion right, redemption right, repurchase right, commitment, agreement,
arrangement or undertaking. There are no outstanding contractual obligations of
BB or any of its Subsidiaries to repurchase, redeem or otherwise acquire any
shares of capital stock of BB or any of its Subsidiaries. There are no
outstanding contractual obligations of BB to vote or to dispose of any shares of
the capital stock of any of its Subsidiaries.

     3.4   Authority; Noncontravention.

           (a) BB has all requisite corporate power and authority to enter into
this Agreement and the Other Agreements to which it is a party and, subject to
receipt of the BB Shareholder Approval, to consummate the transactions
contemplated by this Agreement and the Other Agreements to which it is a party.
The execution and delivery of this Agreement and the Other Agreements to which
it is a party by BB and the consummation of the transactions contemplated by
this Agreement and the Other Agreements to which it is a party have been duly
authorized by all necessary corporate action on the part of BB, subject to
receipt of the BB Shareholder Approval in the case of this Agreement. This
Agreement and the Other Agreements to which it is a party have been duly
executed and delivered by BB and, assuming the due execution and delivery of
each such agreement by the counterparties thereto, each such agreement
constitutes a valid and binding

                                      23
<PAGE>

obligation of BB as to BB's obligations therein, enforceable against BB in
accordance with its terms. The execution and delivery of this Agreement and the
Other Agreements to which it is a party do not, and the consummation of the
transactions contemplated by, and compliance with the provisions of this
Agreement and the Other Agreements to which it is a party by BB will not,
conflict with, or result in any violation of, or default (with or without notice
or lapse of time, or both) under, or give rise to a right of termination,
cancellation or acceleration of any obligation or to loss of a material benefit
under, or result in the creation of any lien upon any of the properties or
assets of BB or any of its Subsidiaries under, (A) Memorandum of Association (or
other organizational documents) and By-laws of BB, in each case as amended to
the date hereof or, except as set forth in Section 3.4 of the BB Disclosure
Letter, the memorandum, the comparable organizational documents and bylaws of
any of BB's Subsidiaries, (B) except as set forth in Section 3.4 of the BB
Disclosure Letter, any loan or credit agreement, note, bond, mortgage,
indenture, lease or other agreement, instrument, permit, concession, franchise
or license applicable to BB or any of its Subsidiaries or their respective
properties or assets or (C) subject to the governmental filings and other
matters referred to in the following sentence, any judgment, order, decree,
statute, law, ordinance, rule or regulation applicable to BB or any of its
Subsidiaries or their respective properties or assets, other than, in the case
of clauses (B) and (C), any such conflicts, violations, defaults, obligations,
losses, rights, liens, judgments, orders, decrees, statutes, laws, ordinances,
rules or regulations that, individually or in the aggregate, are not reasonably
likely to have a Material Adverse Effect on BB. No consent, approval, order or
authorization of, or registration, declaration or filing with, any federal,
state or local government or any court, administrative agency or commission or
other governmental authority or agency, domestic or foreign, is required by or
with respect to BB or any of its Subsidiaries in connection with the execution
and delivery of this Agreement and the Other Agreements to which it is a party
by BB or the consummation by BB of any of the transactions contemplated by this
Agreement and the Other Agreements to which it is a party except for (A) the
filing of a premerger notification and report form by BB under the HSR Act; (B)
the filing with the SEC of (1) the Form S-4, (2) a proxy statement relating to
the BB Shareholders Meeting (such proxy statement, together with the proxy
statement relating to the VA Shareholders Meeting and the prospectus relating to
the issuance of the MINT Common Shares, in each case as amended or supplemented
from time to time, the "Proxy Statement/Prospectus") and (3) such reports under
the Exchange Act, as may be required in connection with this Agreement, the
Other Agreements to which it is a party and the transactions contemplated hereby
and thereby; (C) the filing with the applicable Registrars of the application
for registration of the order sanctioning the Scheme and such other documents as
are required by the BCA, and such filings with Governmental or Regulatory
Authorities to satisfy the applicable requirements of state securities or "blue
sky" laws; (D) such filings with and approvals of the NYSE to permit the MINT
Common Shares that are to be issued in the Merger and the Scheme to be listed on
the NYSE; (E) filings in respect of, and approvals and authorizations of, and,
as applicable, the expiration of applicable waiting periods of Lloyd's and of
Governmental and Regulatory Authorities in the U.K. and Canada (the "BB
Designated Insurance Approvals"); and (F) such consents, approvals, orders or
authorizations the failure of which to be made or obtained, individually or in
the aggregate, is not reasonably likely to have a Material Adverse Effect on BB.

                                      24
<PAGE>

           (b) As of the date hereof, the Board of Directors of BB has approved
and declared advisable and in the best interests of the shareholders of BB this
Agreement and the Scheme, and has approved Other Agreements to which it is a
party and the transactions contemplated by this Agreement and Other Agreements
to which it is a party.

     3.5   SEC Documents; Undisclosed Liabilities; SAP Statements.

           (a) BB has filed all required reports, schedules, forms, statements
and other documents with the SEC since January 1, 1996 (including all filed
reports, schedules, forms, statements and other documents whether or not
required, the "BB SEC Documents"). As of their respective dates, the BB SEC
Documents complied 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 BB SEC
Documents, and none of the BB SEC Documents 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. Except to the extent
that information contained in any BB SEC Document has been revised or superseded
by a later filed BB SEC Document, none of the BB 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. The
financial statements of BB included in the BB 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 involved
(except as may be indicated in the notes thereto or in the BB SEC Documents) and
fairly present the consolidated financial position of BB 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
unaudited statements, to normal year-end adjustments). Except for liabilities
and obligations incurred in the ordinary course of business consistent with past
practice since the date of the most recent consolidated balance sheet included
in the BB SEC Documents or disclosed in Section 3.5(a) of the BB Disclosure
Letter, neither BB nor any of its Subsidiaries has any liabilities or
obligations of any nature (whether accrued, absolute, contingent or otherwise)
required by GAAP to be recognized or disclosed on a consolidated balance sheet
of BB and its consolidated Subsidiaries or in the notes thereto.

           (b) BB conducts its material insurance operations through those
companies listed in Section 3.5 of the BB Disclosure Letter (collectively, the
"BB Insurance Subsidiaries"). Each of the BB Insurance Subsidiaries has filed
all annual and quarterly statements, together with all exhibits,
interrogatories, notes, schedules and any actuarial opinions, affirmations or
certifications or other supporting documents in connection therewith, required
to be filed with or submitted to the appropriate regulatory authorities of the
jurisdiction in which it is domiciled or commercially domiciled or as may be
required by any applicable Governmental or Regulatory Authority on forms
prescribed or permitted by such authority (collectively, the "BB SAP
Statements"). BB has delivered or made available to VA all of the BB SAP
Statements for each BB Insurance Subsidiary for the

                                      25
<PAGE>

periods beginning January 1, 1996, each in the form (including exhibits, annexes
and any amendments thereto) filed with the applicable insurance regulatory
agencies. Financial statements included in the BB SAP Statements and prepared on
a statutory basis, including the notes thereto, were prepared in conformity with
statutory accounting practices prescribed or permitted by the applicable
insurance regulatory authority consistently applied for the periods covered
thereby and present fairly the statutory financial position of such BB Insurance
Subsidiaries as at the respective dates thereof and the results of operations of
such BB Insurance Subsidiaries for the respective periods then ended. The BB SAP
Statements complied in all material respects with all applicable laws, rules and
regulations when filed, and to the knowledge of BB no material deficiency has
been asserted with respect to any BB SAP Statements by the applicable insurance
regulatory body or any other governmental agency or body. The statutory balance
sheets and income statements included in the BB SAP Statements required to be
audited have been audited, and BB has delivered or made available to VA true and
complete copies of all audit opinions related thereto for periods beginning
January 1, 1996. BB has delivered or made available to VA true and complete
copies of all examination reports of insurance departments and any insurance
regulatory agencies received by BB on or after January 1, 1996, relating to the
BB Insurance Subsidiaries.

     3.6   Liabilities and Reserves.

           (a) The reserves carried on the BB SAP Statements of each of BB and
its Subsidiaries for the quarter ended March 31, 1999 for losses, claims and
similar purposes (including claims litigation) were, as of such date, in
compliance in all material respects with the requirements for reserves
established by the appropriate regulatory authorities of the jurisdiction in
which it is domiciled or commercially domiciled or as may be required by any
applicable Governmental or Regulatory Authority, were determined in all material
respects in accordance with generally accepted actuarial standards and
principles consistently applied, and were fairly stated in all material respects
in accordance with actuarial and statutory accounting practices.

           (b) Except for regular periodic assessments in the ordinary course of
business or assessments based on developments which are publicly known within
the insurance industry, to the knowledge of BB, no claim or assessment is
pending or threatened against any of BB's Subsidiaries which is peculiar or
unique to such Subsidiary by any governmental insurance guaranty associations or
Lloyds in connection with such association's or Lloyds' fund relating to
insolvent insurers which if determined adversely, would, individually or in the
aggregate, be reasonably likely to have a Material Adverse Effect.

     3.7   Investment Advisory and Investment Company Matters.

           (a) Except as set forth in Section 3.7 of the BB Disclosure Letter,
neither BB nor any of its Subsidiaries conducts activities of or is otherwise
deemed under law (1) to control an "investment adviser," as such term is defined
in Section 2(a)(20) of the Investment Company Act of 1940, as amended (the
"Investment Company Act"), whether or not registered under the Investment
Advisers Act of 1940, as amended (the "Investment Advisers Act"), or any person
required to be

                                      26
<PAGE>

registered as an investment company under the Investment Company Act. Except as
set forth in Section 3.7 of the BB Disclosure Letter, neither BB nor any of its
Subsidiaries carries on investment business in the United Kingdom as defined in
the Financial Services Act 1986, whether or not authorized under Chapter III, or
being an exempted person under Chapter IV of that Act. Neither BB nor any of its
Subsidiaries is an "investment company" as defined in the Investment Company
Act, and neither BB nor any of its Subsidiaries is a promoter (as such term is
defined in Section 2(a)(30) of the Investment Company Act) of any person that is
such an investment company.

           (b) Except as set forth in Section 3.7 of the BB Disclosure Letter,
neither BB nor any of its Subsidiaries conducts activities of, controls, owns
more than a 20% interest in, or is deemed under applicable law to control, any
Person that is an investment adviser as defined in the Investment Advisers Act,
whether or not registered under such Act, other than such an investment adviser
whose only clients are "insurance companies" as defined in Section 2(a)(17) of
the Investment Company Act.

     3.8   Information Supplied. None of the information supplied or to be
supplied by BB for inclusion or incorporation by reference in (i) the Form S-4
will, at the time the Form S-4 is filed with the SEC, at any time it is amended
or supplemented or at the time it becomes effective under the Securities Act,
contain any untrue statement of a material fact or omit to state any material
fact required to be stated therein or necessary to make the statements therein
not misleading or (ii) the Proxy Statement/Prospectus will, at the date the
Proxy Statement/Prospectus is first mailed to the holders of BB Common Shares or
at the time of the BB Shareholders Meeting, contain any untrue statement of a
material fact or omit 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 are made, not misleading. The Form S-4 and the
Proxy Statement/Prospectus will comply as to form in all material respects with
the requirements of the Securities Act and the Exchange Act, as applicable, and
the respective rules and regulations promulgated thereunder, except that no
representation or warranty is made by BB with respect to statements made or
incorporated by reference therein based on information supplied by VA
specifically for inclusion or incorporation by reference in the Form S-4 or the
Proxy Statement/Prospectus.

     3.9   Absence of Certain Changes or Events. Except as disclosed in the BB
SEC Documents filed and publicly available prior to the date of this Agreement
or in Section 3.9 of the BB Disclosure Letter, since the date of the most recent
audited financial statements included in the BB SEC Documents, BB has conducted
its business only in the ordinary course, and there has not been since such
date, (i) any Material Adverse Change in BB, (ii) any declaration, setting aside
or payment of any dividend or other distribution (whether in cash, stock or
property) with respect to any of BB's capital stock (other than regular
quarterly dividends), (iii) any split, combination or reclassification of any of
its capital stock or any issuance or the authorization of any issuance of any
other securities in respect of, in lieu of or in substitution for shares of its
capital stock, (iv) (A) any granting by BB or any of its Subsidiaries to any
director, executive officer or key employee of BB or any of its Subsidiaries of
any award or incentive payment or increase in compensation or benefits, except
in the ordinary course of business consistent with past practice or as was
required under employment agreements in effect as of September 30, 1998 (copies
of which have been delivered to VA), (B) any

                                      27
<PAGE>

granting by BB or any of its Subsidiaries to any such director, executive
officer or key employee of any increase in severance or termination pay, except
as was required under any employment, severance or termination agreements in
effect as of the date of this Agreement (copies of which have been made
delivered to VA) or (C) any entry by BB or any of its Subsidiaries into any
employment, severance or termination agreement with any such director, executive
officer or key employee, (v) any change in accounting methods, principles or
practices by BB materially affecting its assets, liabilities or business, except
insofar as may have been required by a change in GAAP or (vi) any condition,
event or occurrence which would be reasonably likely to prevent, hinder or
materially delay the ability of BB to consummate the transactions contemplated
by this Agreement or the Other Agreements to which it is a party.

     3.10  Litigation. There is no suit, action or proceeding pending or, to the
knowledge of BB, threatened against or affecting BB or any of its Subsidiaries
or any of their respective officers or employees that, individually or in the
aggregate, is reasonably likely to have a Material Adverse Effect on BB nor is
there any judgment, decree, injunction, rule or order of any Governmental or
Regulatory Authority or arbitrator outstanding against BB or any of its
Subsidiaries having, or which is reasonably likely to have, individually or in
the aggregate, a Material Adverse Effect on BB; provided that for purposes of
                                                --------
this Section 3.10 any such suit, action, proceeding, judgment, decree,
injunction, rule or order arising after the date hereof shall not be deemed to
have a Material Adverse Effect on BB if and to the extent such suit, action,
proceeding, judgment, decree, injunction, rule or order (or any relevant part
thereof) is based on this Agreement, the Other Agreements to which it is a party
or the transactions contemplated hereby or thereby.

     3.11  Labor Relations. Except as set forth in Section 3.11 of the BB
Disclosure Letter or the BB SEC Documents, (i) BB and its Subsidiaries have
complied with all Laws relating to the employment of labor, including provisions
thereof relating to wages, hours, equal opportunity and collective bargaining
and there are no controversies pending or, to the knowledge of BB, threatened,
between BB or any of its Subsidiaries and any of their respective employees,
except such non-compliance or controversies which have not had, and would not
reasonably be expected, individually or in the aggregate, to have a Material
Adverse Effect on BB; (ii) neither BB nor any of its Subsidiaries is a party to
any collective bargaining agreement or other labor union contract applicable to
persons employed by BB or its Subsidiaries, nor does BB know of any activities
or proceedings of any labor union to organize any such employees; and (iii) BB
does not have knowledge of any strikes, slowdowns, work stoppages, lockouts, or
threats thereof, by or with respect to any employees of BB or any of its
Subsidiaries which would reasonably be expected, individually or in the
aggregate, to have a Material Adverse Effect on BB.

     3.12  Benefit Plans. Except as described in Section 3.12 of BB Disclosure
Letter and except as would not reasonably be expected to have a Material Adverse
Effect on BB, (i) each Employee Benefit Plan conforms to, and its administration
is in conformity with, all applicable laws, no liability has been or is expected
to be incurred by BB or any of its Subsidiaries with respect to any Employee
Benefit Plan except regular periodic contributions to such plans and full
payment has been made of all amounts that BB or any of its Subsidiaries is
required to have paid as contributions to

                                      28
<PAGE>

each Employee Benefit Plan, (ii) to BB's knowledge, the current value of accrued
benefits of each Employee Benefit Plan that is a defined benefit plan does not
exceed the current value of such plan's assets, (iii) BB has made available to
VA a true and correct copy of each of the Employee Benefit Plans, and all
applicable trust agreements and all contracts relating thereto, or to the
funding thereof, (iv) all Employee Benefit Plans intended to satisfy applicable
Tax qualification requirements, or other requirements necessary to secure
favorable Tax or other legal treatment comply in all material respects with such
requirements, and (v) adequate accruals for all obligations under the Employee
Benefit Plans are reflected in the financial statements included in the BB SEC
Documents. Except as set forth in Section 3.12 of the BB Disclosure Letter, no
employee of BB will be entitled to any additional benefits or any acceleration
of the time of payment, funding or vesting of any benefits under any BB Benefit
Plan as a result of the transactions contemplated by this Agreement.

     3.13  Tax Matters.

           (a) To the knowledge of BB, none of BB and its Subsidiaries has, nor
has it had, any income which is, or has been, subject to the United States
federal income tax as income that is effectively connected with the conduct of a
trade or business within the United States, within the meaning of Section
882(a)(1) of the Code. BB and its Subsidiaries have filed, or caused to be filed
with the appropriate Governmental or Regulatory Authorities, all income Tax
Returns and all other material Tax Returns required to be filed on or prior to
the date hereof which, if not filed, would have a Material Adverse Effect on BB,
and have paid in full all Taxes (including Taxes withheld from employees'
salaries and other withholding Taxes and obligations) shown to be due on such
Tax Returns, and the most recent financial statements of BB included in the BB
SEC Documents reflect an adequate reserve in accordance with GAAP for all Taxes
payable by BB and its Subsidiaries for all taxable periods and portions thereof
accrued through the date of such financial statements, except for inadequately
reserved Taxes that individually or in the aggregate would not reasonably be
expected to have a Material Adverse Effect. All written assessments of Taxes due
and payable by or on behalf of BB or any of its Subsidiaries have either been
paid or provided for (in accordance with GAAP) except for assessments that
individually or in the aggregate would not reasonably be expected to have a
Material Adverse Effect.

           (b) There are no material audits, administrative proceedings or court
proceedings regarding Taxes pending against BB or any of its Subsidiaries and
wherein an adverse determination or ruling, for any one of, or all such, audits
or proceedings, would reasonably be expected to have a Material Adverse Effect.
No deficiencies for any Tax have been proposed in writing, asserted or assessed,
except for deficiencies that individually or in the aggregate would not
reasonably be expected to have a Material Adverse Effect.

           (c) To BB's knowledge, BB and its Subsidiaries did not have for the
year ended December 31, 1998, and BB does not expect BB or any of its
Subsidiaries to have for the period commencing January 1, 1999 and ending at the
earlier of December 31, 1999 and the Effective Time (treating such period as if
it were a taxable year) "related person insurance income" within the meaning of
Section 953(c)(2) of the Code in excess of the exceptions provided in Sections

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953(c)(3)(B) of the Code or, if such exception is not available for such year or
such period, BB and its Subsidiaries qualified for such year or for such period,
as the case may be, for the exception provided in Section 953(c)(3)(A) of the
Code.

           (d) Except as disclosed in Section 3.13(d) of the BB Disclosure
Letter, to BB's knowledge, neither BB nor any of its Subsidiaries is, nor has BB
or any of its Subsidiaries ever been, a "controlled foreign corporation" within
the meaning of Section 957(a) or 957(b) of the Code.

     3.14  No Excess Parachute Payments. Except as set forth in Section 3.14 of
the BB Disclosure Letter, no amount that could be received (whether in cash or
property or the vesting of property) as a result of any of the transactions
contemplated by this Agreement, either alone or together with other events, by
any employee, officer or director of BB or any of its affiliates who is a
"disqualified individual" (as such term is defined in proposed Treasury
Regulation Section 1.280G-1) under any employment, severance or termination
agreement, other compensation arrangement or the BB Benefit Plan currently in
effect would be characterized as an "excess parachute payment" (as such term is
defined in Section 280G(b)(1) of the Code).

     3.15  Compliance with Applicable Laws. Each of BB and its Subsidiaries and,
where applicable, each of their respective officers and employees, has in effect
all Licenses and Permits necessary for it to own, lease or operate its assets
and to carry on its business as now conducted, and there has occurred no default
under or limitation with respect to any such Licenses and Permits, except for
the lack of Licenses and Permits and for defaults or limitations under Licenses
and Permits which, individually or in the aggregate, are not reasonably likely
to have a Material Adverse Effect on BB. To the knowledge of BB, BB and its
Subsidiaries are, and have been, in compliance with all applicable statutes,
laws, ordinances, rules, orders and regulations of any Governmental or
Regulatory Authority, including Insurance Laws, except for instances of
noncompliance which, individually or in the aggregate, are not reasonably likely
to have a Material Adverse Effect on BB. To the knowledge of BB, the businesses
and operations of each of BB and its Subsidiaries are being and have been
conducted in compliance in all respects with all applicable Insurance Laws,
except for instances of noncompliance which, individually or in the aggregate,
are not reasonably likely to have a Material Adverse Effect on BB. No
investigation, examination or review by any Governmental or Regulatory Authority
with respect to BB or any of its Subsidiaries is pending or, to the knowledge of
BB, threatened, nor has any Governmental or Regulatory Authority indicated an
intention to conduct the same, except for those the outcome of which,
individually or in the aggregate, are not reasonably likely to have a Material
Adverse Effect on BB. Any of BB and its Subsidiaries which is registered as
either a Managing Agent at Lloyds or a Corporate Member at Lloyds has not, since
its first registration, had such registration withdrawn, and no notice has been
given by Lloyds to the effect that (and, to the knowledge of BB, no
circumstances exist such that) such registration will or is likely to be
withdrawn or reviewed and no conditions, obligations or undertakings have been
imposed on such registration, other than those applicable to managing agents or
corporate members at Lloyd's generally.

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<PAGE>

     3.16  Properties. Except as disclosed in the BB SEC Documents, each of BB
and its Subsidiaries (i) has good, clear and marketable title to all the
properties and assets reflected in the latest audited balance sheet included in
the most recent BB SEC Document as being owned by BB or one of its Subsidiaries
or acquired after the date thereof which are, individually or in the aggregate,
material to BB's business on a consolidated basis (except properties and assets
sold or otherwise disposed of since the date thereof in the ordinary course of
business), free and clear of (A) all Encumbrances except (1) statutory liens
securing payments not yet due and (2) such imperfections or irregularities of
title or other Encumbrances (other than real property mortgages or deeds of
trust) as do not materially affect the use of the properties or assets subject
thereto or affected thereby or otherwise materially impair business operations
at such properties, and (B) all real property mortgages and deeds of trust and
(ii) is the lessee of all leasehold estates reflected in the latest audited
financial statements included in the most recent BB SEC Document or acquired
after the date thereof which are material to its business on a consolidated
basis and is in possession of the properties purported to be leased thereunder,
and each such lease is valid without material default thereunder by the lessee
or, to the BB's knowledge, the lessor.

     3.17  Voting Requirements. The affirmative vote at the BB Shareholders
Meeting (the "BB Shareholder Approval") of the holders of a majority in number
representing at least 75 percent of the voting power of all outstanding BB
Common Shares present and voting at the BB Shareholders Meeting to adopt this
Agreement is the only vote of the holders of any class or series of BB's capital
stock necessary to approve and adopt this Agreement, the Other Agreements to
which it is a party, and the transactions contemplated hereby and thereby.

     3.18  Takeover Statutes. To the knowledge of BB, no takeover statute, and
no anti-takeover provision in BB's Memorandum of Association (or other
organizational documents) and Bye-laws, is applicable to the Scheme or the other
transactions contemplated by this Agreement or the Other Agreements to which it
is a party.

     3.19  Brokers. No broker, investment banker, financial adviser or other
person, other than DLJ, the fees and expenses of which will be paid by BB, is
entitled to any broker's, finder's, financial adviser'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 BB. BB has delivered to VA true
and complete copies of all agreements under which any such fees or expenses are
payable and all indemnification and other agreements related to the engagement
of the persons to whom such fees are payable.

     3.20  Related Party Transactions. Except for the transactions described in
the BB SEC Reports or Section 3.20 of the BB Disclosure Letter, all transactions
involving BB or any of the Subsidiaries that are required to be disclosed in the
BB SEC Reports in accordance with Item 404 of Regulation S-K have been so
disclosed, and to the knowledge of BB, since December 31, 1998, neither BB nor
any of its Subsidiaries has entered into any transactions that would be required
to be disclosed in future public filings under the Exchange Act pursuant to such
Item which have not already been disclosed in the BB SEC Reports filed prior to
the date hereof.

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<PAGE>

     3.21  Material Contracts. Other than Contracts or amendments thereto that
are required to be filed and have been filed as an exhibit to the latest Form
10-K filed by BB with the SEC, and except as set forth in Section 3.21 of the BB
Disclosure Letter, there are no Contracts that are material to the business,
financial position or results of operations of BB, including (i) any employment,
severance, termination, consulting or retirement contract providing for
aggregate payments to any individual in any calendar year in excess of $500,000,
(ii) any contract relating to the borrowing of money or the guarantee of any
such obligation (other than contracts evidencing fully secured repurchase
agreements, trade payables, and contracts relating to borrowings or guarantees
made in the ordinary course of business), (iii) any material agency, third party
administrator, management or other service contracts and (iv) any material
contract or agreement between or among BB and its Subsidiaries.

     3.22  Intellectual Property. Except as, individually or in the aggregate,
is not reasonably likely to have a Material Adverse Effect on BB, BB does not
have knowledge of any valid grounds for any bona fide claims (i) to the effect
that the manufacture, sale, licensing or use of any product or service as now
used, sold or licensed or proposed for use, sale or license by BB or any of its
Subsidiaries, infringes on any copyright, patent, trademark, trade name, service
mark or trade secret; (ii) against the use by BB or any of its Subsidiaries, of
any copyrights, patents, trademarks, trade names, service marks, trade secrets,
technology, know-how or computer software programs and applications used in the
business of BB or any of its Subsidiaries as currently conducted or as proposed
to be conducted; (iii) challenging the ownership, validity or effectiveness of
any BB Intellectual Property Rights or other trade secret material to BB; or
(iv) challenging the license or legally enforceable right to use of the Third-
Party Intellectual Rights by BB or any of its Subsidiaries.

     3.23  No Regulatory Disqualifications. To the knowledge of BB, no event has
occurred or condition exists or, to the extent it is within the reasonable
control of BB, will occur or exist with respect to BB that, in connection with
obtaining any approval of any Governmental or Regulatory Authority required for
the Scheme, would cause BB to fail to satisfy any applicable statute or written
regulation of any applicable insurance regulatory authority that, individually
or in the aggregate, is reasonably likely to have a Material Adverse Effect on
BB.

     3.24  Insurance Ratings. As of the date hereof, BB has no reason to believe
that any rating presently held by BB or any of its Subsidiaries is likely to be
modified, qualified, lowered or placed under surveillance for a possible
downgrade for any reason other than as a result of the transactions contemplated
hereby.

     3.25  Reinsurance, etc. BB has no reason to believe that any material
amount recoverable pursuant to any material Reinsurance Agreement applicable to
the BB Insurance Subsidiaries or their properties or assets reflected in the BB,
SAP Statements is not fully collectible in due course. Each BB Insurance
Subsidiary is entitled to take full credit in its SAP Statements pursuant to
Insurance Laws, rules and regulations for such reinsurance, coinsurance or
excess insurance ceded pursuant to any such Reinsurance Agreement. Except as set
forth in Section 3.25 of the BB Disclosure Letter,

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<PAGE>

there are no assumption reinsurance contracts or arrangements entered into by
any BB Insurance Subsidiary in which such BB Insurance Subsidiary has ceded risk
to any other Person which are material individually or in the aggregate to BB
and its Subsidiaries taken as a whole.

     3.26  Derivatives. As of December 31, 1998, none of BB and the BB
Subsidiaries was subject to any material exposure, individually or in the
aggregate, under any futures or option contracts, swaps, hedges or similar
instruments ("Derivatives") to which BB or any of BB Subsidiaries is a party.


                                  ARTICLE IV
                     REPRESENTATIONS AND WARRANTIES OF VA

     As an inducement to BB to enter into this Agreement, and except as
otherwise disclosed to BB in a letter delivered to it prior to the execution
hereof (the "VA Disclosure Letter") VA hereby makes, as of the date hereof and
as of the Closing Date, the following representations and warranties to BB:

     4.1   Organization, Standing and Corporate Power. Each of VA and its
Subsidiaries is a corporation duly organized, validly existing and in good
standing under the laws of the respective jurisdiction in which it is
incorporated and has the requisite corporate power and authority to carry on its
business as now being conducted. Each of VA and its Subsidiaries is duly
qualified or licensed 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 or licensing necessary, other than in
such jurisdictions where the failure to be so qualified or licensed,
individually or in the aggregate, is not reasonably likely to have a Material
Adverse Effect on VA. VA has made available to BB complete and correct copies of
its articles of incorporation (or other organizational documents) and bylaws and
the articles of incorporation (or other organizational documents) and bylaws of
its Subsidiaries, in each case as amended to the date hereof.

     4.2   Subsidiaries. Except for directors' qualifying shares, all the
outstanding shares of capital stock of, or other ownership interests in, each
such Subsidiary have been validly issued and are fully paid and nonassessable
and are owned directly or indirectly by VA, free and clear of all liens and free
of any other restriction (including any restriction on the right to vote, sell
or otherwise dispose of such capital stock or such other ownership interest).

     4.3   Capital Structure. Section 4.3 of the VA Disclosure Letter sets
forth, as of the date hereof, the authorized capital stock of VA, the number of
such shares issued and outstanding, the number of such shares subject to options
and the VA Option Plans under which such options were granted and the number of
such shares reserved for issuance under each such VA Option Plan. There are no
outstanding SARs or rights (other than the stock options listed in Section 4.3
of the VA Disclosure Letter) to receive shares of the capital stock of VA on a
deferred basis granted under any of VA Stock Option Plans or otherwise. All
outstanding shares of capital stock of VA are, and all

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<PAGE>

shares which may be issued pursuant to this Agreement or VA Stock Option Plans
will be, when issued, duly authorized, validly issued, fully paid and
nonassessable and not subject to preemptive rights. As of the date of this
Agreement, no bonds, debentures, notes or other indebtedness of VA having the
right to vote (or convertible into, or exchangeable for, securities having the
right to vote) on any matters on which stockholders of VA may vote are issued or
outstanding. Except as set forth above, as of the date of this Agreement, there
are no preemptive or other outstanding securities, options, warrants, calls,
rights, conversion rights, redemption rights, repurchase rights, commitments,
agreements, arrangements or undertakings of any kind to which VA or any of its
Subsidiaries is a party or by which any of them is bound obligating VA or any of
its Subsidiaries to issue, deliver or sell, or cause to be issued, delivered or
sold, additional shares of capital stock or other voting securities of VA or any
of its Subsidiaries, or giving any person a right to subscribe for or acquire,
any securities of VA or any of its Subsidiaries or obligating VA or any of its
Subsidiaries to issue, grant, extend or enter into any such security, option,
warrant, call, right, conversion right, redemption right, repurchase right,
commitment, agreement, arrangement or undertaking. There are no outstanding
contractual obligations of VA or any of its Subsidiaries to repurchase, redeem
or otherwise acquire any shares of capital stock of VA or any of its
Subsidiaries. There are no outstanding contractual obligations of VA to vote or
to dispose of any shares of the capital stock of any of its Subsidiaries.

     4.4   Authority; Noncontravention.

           (a) VA has all requisite corporate power and authority to enter into
this Agreement and Other Agreements to which it is a party and, subject to
receipt of the VA Shareholder Approval, to consummate the transactions
contemplated by this Agreement and the Other Agreements to which it is a party.
The execution and delivery of this Agreement and the Other Agreements to which
it is a party by VA and the consummation of the transactions contemplated by
this Agreement and the Other Agreements to which it is a party have been duly
authorized by all necessary corporate action on the part of VA, subject to
receipt of the VA Shareholder Approval in the case of this Agreement. This
Agreement and the Other Agreements to which it is a party have been duly
executed and delivered by VA and, assuming the due execution and delivery of
each such agreement by the counterparties thereto, each such agreement
constitutes a valid and binding obligation of VA as to VA's obligations therein,
enforceable against VA in accordance with its terms. The execution and delivery
of this Agreement and the Other Agreements to which it is a party do not, and
the consummation of the transactions contemplated by this Agreement, the Other
Agreements to which it is a party and compliance with the provisions of this
Agreement and the Other Agreements to which it is a party by VA will not,
conflict with, or result in any violation of, or default (with or without notice
or lapse of time, or both) under, or give rise to a right of termination,
cancellation or acceleration of any obligation or to loss of a material benefit
under, or result in the creation of any lien upon any of the properties or
assets of VA or any of its Subsidiaries under, (A) the articles of incorporation
(or other organizational documents) and bylaws of VA, in each case as amended to
the date hereof or the comparable charter or organizational documents and bylaws
of any of VA's Subsidiaries, (B) except as set forth in Section 4.4 of the VA
Disclosure Letter, any loan or credit agreement, note, bond, mortgage,
indenture, lease or other agreement, instrument, permit,

                                      34
<PAGE>

concession, franchise or license applicable to VA or any of its Subsidiaries or
their respective properties or assets or (C) subject to the governmental filings
and other matters referred to in the following sentence, any judgment, order,
decree, statute, law, ordinance, rule or regulation applicable to VA or any of
its Subsidiaries or their respective properties or assets, other than, in the
case of clauses (B) and (C), any such conflicts, violations, defaults,
obligations, losses, rights, liens, judgments, orders, decrees, statutes, laws,
ordinances, rules or regulations that, individually or in the aggregate, are not
reasonably likely to have a Material Adverse Effect on VA. No consent, approval,
order or authorization of, or registration, declaration or filing with, any
federal, state or local government or any court, administrative agency or
commission or other governmental authority or agency, domestic or foreign, is
required by or with respect to VA or any of its Subsidiaries in connection with
the execution and delivery of this Agreement and the Other Agreements to which
it is a party by VA or the consummation by VA of any of the transactions
contemplated by this Agreement and the Other Agreements to which it is a party,
except for (A) the filing of a premerger notification and report form by VA
under the HSR Act; (B) the filing with the SEC of (1) the Form S-4, (2) the
Proxy Statement/Prospectus relating to the VA Shareholders Meeting and (3) such
reports under the Exchange Act, as may be required in connection with this
Agreement, the Other Agreements to which it is a party and the transactions
contemplated hereby and thereby; (C) the filing of appropriate documents with
the relevant authorities of other states and jurisdictions in which VA is
qualified to do business and such filings with Governmental or Regulatory
Authorities to satisfy the applicable requirements of state securities or "blue
sky" laws; (D) such filings with and approvals of the NYSE to permit the MINT
Common Shares that are to be issued in the Merger to be listed on the NYSE; (E)
filings in respect of, and approvals and authorizations of, and, as applicable,
the expiration of applicable waiting periods of, the respective Commissioners of
Insurance of the states of California, Delaware, Illinois, New Jersey and
Virginia (the "VA Designated Insurance Approvals"); and (F) such consents,
approvals, orders or authorizations the failure of which to be made or obtained,
individually or in the aggregate, is not reasonably likely to have a Material
Adverse Effect on VA.

           (b) As of the date hereof, the Board of Directors of VA has approved
and declared advisable and in the best interest of the shareholders of VA this
Agreement and the Merger, and has approved Other Agreements to which it is a
party and the other transactions contemplated by this Agreement and Other
Agreements to which it is a party.

     4.5   SEC Documents; Undisclosed Liabilities; SAP Statements.

           (a) VA has filed all required reports, schedules, forms, statements
and other documents with the SEC since January 1, 1996 (including all filed
reports, schedules, forms, statements and other documents whether or not
required, the "VA SEC Documents"). As of their respective dates, the VA SEC
Documents complied 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 VA SEC
Documents, and none of the VA SEC Documents 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

                                      35
<PAGE>

circumstances under which they were made, not misleading. Except to the extent
that information contained in any VA SEC Document has been revised or superseded
by a later filed VA SEC Document, none of the VA 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. The
financial statements of VA included in the VA 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 involved
(except as may be indicated in the notes thereto or in the VA SEC Documents) and
fairly present the consolidated financial position of VA 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
unaudited statements, to normal year-end adjustments). Except for liabilities
and obligations incurred in the ordinary course of business consistent with past
practice since the date of the most recent consolidated balance sheet included
in the VA SEC Documents, neither VA nor any of its Subsidiaries has any
liabilities or obligations of any nature (whether accrued, absolute, contingent
or otherwise) required by U.S. generally accepted accounting principles to be
recognized or disclosed on a consolidated balance sheet of VA and its
consolidated Subsidiaries or in the notes thereto.

           (b) VA conducts its material insurance operations through those
companies listed in Section 4.5 of the VA Disclosure Letter (collectively, the
"VA Insurance Subsidiaries"). Each of the VA Insurance Subsidiaries has filed
all annual and quarterly statements, together with all exhibits,
interrogatories, notes, schedules and any actuarial opinions, affirmations or
certifications or other supporting documents in connection therewith, required
to be filed with or submitted to the appropriate regulatory authorities of the
jurisdiction in which it is domiciled or commercially domiciled or as may be
required by any Governmental or Regulatory Authority on forms prescribed or
permitted by such authority (collectively, the "VA SAP Statements"). VA has
delivered or made available to BB all of the VA SAP Statements for each VA
Insurance Subsidiary for the periods beginning January 1, 1996, each in the form
(including exhibits, annexes and any amendments thereto) filed with the
applicable state insurance regulatory agency. Financial statements included in
the VA SAP Statements and prepared on a statutory basis, including the notes
thereto, were prepared in conformity with statutory accounting practices
prescribed or permitted by the applicable insurance regulatory authority
consistently applied for the periods covered thereby and present fairly the
statutory financial position of such VA Insurance Subsidiaries as at the
respective dates thereof and the results of operations of such VA Insurance
Subsidiaries for the respective periods then ended. The VA 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 VA SAP Statements by the applicable insurance regulatory body or
any other governmental agency or body. The statutory balance sheets and income
statements included in the VA SAP Statements required to be audited have been
audited, and VA has delivered or made available to BB true and complete copies
of all audit opinions related thereto for periods beginning January 1, 1996. VA
has delivered or made available to BB true and complete copies of all
examination reports of insurance departments

                                      36
<PAGE>

and any insurance regulatory agencies received by VA on or after January 1, 1996
relating to the VA Insurance Subsidiaries.

     4.6   Liabilities and Reserves.

           (a) The reserves carried on the VA SAP Statements of each of VA and
its Subsidiaries for the quarter ended March 31, 1999 for losses, claims and
similar purposes (including claims litigation) were, as of such date, in
compliance in all material respects with the requirements for reserves
established by the jurisdiction in which it is domiciled or commercially
domiciled, were determined in all material respects in accordance with generally
accepted actuarial standards and principles consistently applied, and were
fairly stated in all material respects in accordance with actuarial and
statutory accounting practices.

           (b) Except for regular periodic assessments in the ordinary course of
business or assessments based on developments which are publicly known within
the insurance industry, to the knowledge of VA, no claim or assessment is
pending or threatened against any of VA's Subsidiaries which is peculiar or
unique to such Subsidiary by any state insurance guaranty associations in
connection with such association's fund relating to insolvent insurers which if
determined adversely, would, individually or in the aggregate, be reasonably
likely to have a Material Adverse Effect.

     4.7   Investment Advisory and Investment Company Matters.

           (a) Except as set forth in Section 4.7 of the VA Disclosure Letter,
neither VA nor any of its Subsidiaries conducts activities of or is otherwise
deemed under law to control an "investment adviser," as such term is defined in
Section 2(a)(20) of the Investment Company Act, whether or not registered under
the Investment Advisers Act, or any person required to be registered as an
investment company under the Investment Company Act. Neither VA nor any of its
Subsidiaries is an "investment company" as defined in the Investment Company
Act, and neither VA nor any of its Subsidiaries is a promoter (as such term is
defined in Section 2(a)(30) of the Investment Company Act) of any person that is
such an investment company.

           (b) Except as set forth in Section 4.7 of the VA Disclosure Letter,
neither VA nor any of its Subsidiaries conduct activities of, controls, owns
more than a 20% interest in, or is deemed under applicable law to control, any
person that is an investment adviser as defined in the Investment Advisers Act,
whether or not registered under such Act, other than such an investment adviser
whose only clients are "insurance companies" as defined in Section 2(a)(17) of
the Investment Company Act.

     4.8   Information Supplied. None of the information supplied or to be
supplied by VA for inclusion or incorporation by reference in (i) the Form S-4
will, at the time the Form S-4 is filed with the SEC, at any time it is amended
or supplemented or at the time it becomes effective under the Securities Act,
contain any untrue statement of a material fact or omit to state any material
fact required to be stated therein or necessary to make the statements therein
not misleading or (ii) the Proxy Statement/Prospectus will, at the date the
Proxy Statement/Prospectus is first mailed to the

                                      37
<PAGE>

holders of VA Common Shares or at the time of the VA Shareholders Meeting,
contain any untrue statement of a material fact or omit 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 are made, not
misleading. The Form S-4 and the Proxy Statement/Prospectus will comply as to
form in all material respects with the requirements of the Securities Act and
the Exchange Act, as applicable, and the respective rules and regulations
promulgated thereunder, except that no representation or warranty is made by VA
with respect to statements made or incorporated by reference therein based on
information supplied by BB specifically for inclusion or incorporation by
reference in the Form S-4 or the Proxy Statement/Prospectus.

     4.9 Absence of Certain Changes or Events. Except as disclosed in the VA SEC
Documents filed and publicly available prior to the date of this Agreement or in
Section 4.9 of the VA Disclosure Letter, since the date of the most recent
audited financial statements included in the VA SEC Documents, VA has conducted
its business only in the ordinary course, and there has not been since such
date, (i) any Material Adverse Change in VA, (ii) any declaration, setting aside
or payment of any dividend or other distribution (whether in cash, stock or
property) with respect to any of VA's capital stock, ) (iii) any split,
combination or reclassification of any of its capital stock or any issuance or
the authorization of any issuance of any other securities in respect of, in lieu
of or in substitution for shares of its capital stock, (iv) any change in
accounting methods, principles or practices by VA materially affecting its
assets, liabilities or business, except insofar as may have been required by a
change in U.S. generally accepted accounting principles or (v) any condition,
event or occurrence which would be reasonably likely to prevent, hinder or
materially delay the ability of VA to consummate the transactions contemplated
by this Agreement or the Other Agreements to which it is a party.

     4.10  Litigation. There is no suit, action or proceeding pending or, to the
knowledge of VA, threatened against or affecting VA or any of its Subsidiaries
that, individually or in the aggregate, is reasonably likely to have a Material
Adverse Effect on VA nor is there any judgment, decree, injunction, rule or
order of any Governmental or Regulatory Authority or arbitrator outstanding
against VA or any of its Subsidiaries having, or which is reasonably likely to
have, individually or in the aggregate, a Material Adverse Effect on VA;
provided, that for purposes of this paragraph any such suit, action, proceeding,
judgment, decree, injunction, rule or order arising after the date hereof shall
not be deemed to have a Material Adverse Effect on VA if and to the extent such
suit, action, proceeding, judgment, decree, injunction, rule or order (or any
relevant part thereof) is based on this Agreement, the Other Agreements to which
it is a party or the transactions contemplated hereby or thereby.

     4.11 Labor Relations. Except as set forth in Section 4.11 of the VA
Disclosure Letter or the VA SEC Documents, (i) VA and its Subsidiaries have
complied with all Laws relating to the employment of labor, including provisions
thereof relating to wages, hours, equal opportunity and collective bargaining
and there are no controversies pending or, to the knowledge of VA, threatened,
between VA or any of its Subsidiaries and any of their respective employees,
except such non-compliance or controversies which have not had, and would not
reasonably be expected, individually

                                      38
<PAGE>

or in the aggregate, to have a Material Adverse Effect on VA; (ii) neither VA
nor any of its Subsidiaries is a party to any collective bargaining agreement or
other labor union contract applicable to persons employed by VA or its
Subsidiaries, nor does VA know of any activities or proceedings of any labor
union to organize any such employees; and (iii) VA does not have knowledge of
any strikes, slowdowns, work stoppages, lockouts, or threats thereof, by or with
respect to any employees of VA or any of its Subsidiaries which would reasonably
be expected, individually or in the aggregate, to have a Material Adverse Effect
on VA.

     4.12  Benefit Plans. Except as described in Section 4.12 of the VA
Disclosure Letter and except as would not reasonably be expected to have a
Material Adverse Effect on VA, (i) each Employee Benefit Plan conforms to, and
its administration is in conformity with, all applicable laws, no liability has
been or is expected to be incurred by VA or any of its Subsidiaries with respect
to any Employee Benefit Plan except regular periodic contributions to such plans
and full payment has been made of all amounts that VA or any of its Subsidiaries
is required to have paid as contributions to each Employee Benefit Plan, (ii) to
VA's knowledge, the current value of accrued benefits of each Employee Benefit
Plan that is a defined benefit plan does not exceed the current value of such
plan's assets, (iii) VA has made available to VA a true and correct copy of each
of the Employee Benefit Plans, and all applicable trust agreements and all
contracts relating thereto, or to the funding thereof, (iv) all Employee Benefit
Plans intended to satisfy applicable Tax qualification requirements, or other
requirements necessary to secure favorable Tax or other legal treatment comply
in all material respects with such requirements, and (v) adequate accruals for
all obligations under the Employee Benefit Plans are reflected in the financial
statements included in the VA SEC Documents. Except as set forth in Section 4.12
of the VA Disclosure Letter, no employee of VA will be entitled to any
additional benefits or any acceleration of the time of payment, funding or
vesting of any benefits under any VA Benefit Plan as a result of the
transactions contemplated by this Agreement.

     4.13  Tax Matters.

           (a) VA and its Subsidiaries have filed or caused to be filed with the
appropriate United States federal, state, local, foreign and other Governmental
or Regulatory Authorities, all income Tax Returns and all other material Tax
Returns, required to be filed on or prior to the date hereof which, if not
filed, would have a Material Adverse Effect on VA, and have paid in full all
Taxes (including Taxes withheld from employees' salaries and other withholding
Taxes and obligations) shown to be due on such Tax Returns, and the most recent
financial statements of VA included in the VA SEC Documents reflect an adequate
reserve in accordance with GAAP for all Taxes payable by VA and its Subsidiaries
for all taxable periods and portions thereof accrued through the date of such
financial statements, except for inadequately reserved Taxes that individually
or in the aggregate would not reasonably be expected to have a Material Adverse
Effect. All written assessments of Taxes due and payable by or on behalf of VA
or any of its Subsidiaries have either been paid or provided for (in accordance
with GAAP), except for assessments that individually or in the aggregate would
not reasonably be expected to have a Material Adverse Effect.

                                      39
<PAGE>

           (b) There are no material audits, administrative proceedings or court
proceedings regarding Taxes pending against VA or any of its Subsidiaries
wherein an adverse determination or ruling, for any one of, or all such, audits
or proceedings, would reasonably be expected to have a Material Adverse Effect.
No deficiencies for any Tax have been proposed in writing, asserted or assessed,
except for deficiencies that individually or in the aggregate would not
reasonably be expected to have a Material Adverse Effect.

     4.14  No Excess Parachute Payments. No amount that could be received
(whether in cash or property or the vesting of property) as a result of any of
the transactions contemplated by this Agreement, either alone or together with
other events, by any employee, officer or director of VA or any of its
affiliates who is a "disqualified individual" (as such term is defined in
proposed Treasury Regulation Section 1.280G-1) under any employment, severance
or termination agreement, other compensation arrangement or the VA Benefit Plan
currently in effect would be characterized as an "excess parachute payment" (as
such term is defined in Section 280G(b)(1) of the Code).

     4.15  Compliance with Applicable Laws. Each of VA and its Subsidiaries has
in effect all Licenses and Permits necessary for it to own, lease or operate its
assets and to carry on its business as now conducted, and there has occurred no
default under or limitation with respect to any such Licenses and Permits,
except for the lack of Licenses and Permits and for defaults or limitations
under Licenses and Permits which, individually or in the aggregate, are not
reasonably likely to have a Material Adverse Effect on VA. To the knowledge of
VA, VA and its Subsidiaries are, and have been, in compliance with all
applicable statutes, laws, ordinances, rules, orders and regulations of any
Governmental or Regulatory Authority, including Insurance Laws, except for
instances of noncompliance which, individually or in the aggregate, are not
reasonably likely to have a Material Adverse Effect on VA. To the knowledge of
VA, the businesses and operations of each of VA and its Subsidiaries are being
and have been conducted in compliance in all respects with all applicable
Insurance Laws, except for instances of noncompliance which, individually or in
the aggregate, are not reasonably likely to have a Material Adverse Effect on
VA. No investigation, examination or review by any Governmental or Regulatory
Authority with respect to VA or any of its Subsidiaries is pending or, to the
knowledge of VA, threatened, nor has any Governmental or Regulatory Authority
indicated an intention to conduct the same, except for those the outcome of
which, individually or in the aggregate, are not reasonably likely to have a
Material Adverse Effect on VA.

     4.16 Properties. Except as disclosed in the VA SEC Documents, each of VA
and its Subsidiaries (i) has good, clear and marketable title to all the
properties and assets reflected in the latest audited balance sheet included in
the most recent VA SEC Document as being owned by VA or one of its Subsidiaries
or acquired after the date thereof which are, individually or in the aggregate,
material to VA's business on a consolidated basis (except properties and assets
sold or otherwise disposed of since the date thereof in the ordinary course of
business), free and clear of (A) all Encumbrances except (1) statutory liens
securing payments not yet due and (2) such imperfections or irregularities of
title or other Encumbrances (other than real property mortgages or deeds of
trust) as do not materially affect the use of the properties or assets subject
thereto or affected thereby or otherwise materially impair business operations
at such properties, and (B) all real property

                                      40
<PAGE>

mortgages and deeds of trust and (ii) is the lessee of all leasehold estates
reflected in the latest audited financial statements  included in the most
recent VA SEC Document or acquired after the date thereof which are material to
its business on a consolidated basis and is in possession of the properties
purported to be leased thereunder, and each such lease is valid without material
default thereunder by the lessee or, to the VA's knowledge, the lessor.

     4.17   Voting Requirements.  The affirmative vote at the VA Shareholders
Meeting (the "VA Shareholder Approval") of the holders of more than two-thirds
of the voting power of all outstanding shares of VA's capital stock at the VA
Shareholders Meeting to adopt this Agreement is the only vote of the holders of
any class or series of VA's capital stock necessary to approve and adopt this
Agreement, the Other Agreements to which it is a party,  and the transactions
contemplated hereby and thereby.

     4.18   Takeover Statutes.  To the knowledge of VA, no takeover statute, and
no anti-takeover provision in VA's articles of incorporation (or other
organizational documents) and bylaws, is applicable to the Merger or the other
transactions contemplated by this Agreement and the Other Agreements to which it
is a party.

     4.19   Brokers.  No broker, investment banker, financial adviser or other
person, other than SSB, the fees and expenses of which will be paid by VA, is
entitled to any broker's, finder's, financial adviser'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 VA.

     4.20   Related Party Transactions. Except for the transactions described in
the VA SEC Reports or Section 4.20 of the VA Disclosure Letter, all transactions
involving VA or any of its Subsidiaries that are required to be disclosed in the
VA SEC Reports in accordance with Item 404 of Regulation S-K have been so
disclosed, and to the knowledge of VA, since December 31, 1998, neither VA nor
any of its Subsidiaries has entered into any transactions that would be required
to be disclosed in future public filings under the Exchange Act pursuant to such
Item which have not already been disclosed in the VA SEC Reports filed prior to
the date hereof.

     4.21 Material Contracts. Other than Contracts or amendments thereto that
are required to be filed and have been filed as an exhibit to the latest Form
10-K filed by VA with the SEC, there are no Contracts that are material to the
business, financial position or results of operations of VA, including (i) any
employment, severance, termination, consulting or retirement contract providing
for aggregate payments to any individual in any calendar year in excess of
$500,000, (ii) any contract relating to the borrowing of money or the guarantee
of any such obligation (other than contracts evidencing fully secured repurchase
agreements, trade payables, and contracts relating to borrowings or guarantees
made in the ordinary course of business), (iii) any material agency, third party
administrator, management or other service contracts and (iv) any material
contract or agreement between or among VA and its Subsidiaries.

                                      41
<PAGE>

     4.22 Intellectual Property. Except as, individually or in the aggregate, is
not reasonably likely to have a Material Adverse Effect on VA, VA does not have
knowledge of any valid grounds for any bona fide claims (i) to the effect that
the manufacture, sale, licensing or use of any product or service as now used,
sold or licensed or proposed for use, sale or license by VA or any of its
Subsidiaries, infringes on any copyright, patent, trademark, trade name, service
mark or trade secret; (ii) against the use by VA or any of its Subsidiaries, of
any copyrights, patents, trademarks, trade names, service marks, trade secrets,
technology, know-how or computer software programs and applications used in the
business of VA or any of its Subsidiaries as currently conducted or as proposed
to be conducted; (iii) challenging the ownership, validity or effectiveness of
any VA Intellectual Property Rights or other trade secret material to VA; or
(iv) challenging the license or legally enforceable right to use of the Third-
Party Intellectual Rights by VA or any of its Subsidiaries.

     4.23   No Regulatory Disqualifications. To the knowledge of VA, no event
has occurred or condition exists or, to the extent it is within the reasonable
control of VA, will occur or exist with respect to VA that, in connection with
obtaining any approval or any Governmental or Regulatory Authority required for
the Merger, would cause VA to fail to satisfy any applicable statute or written
regulation of any applicable insurance regulatory authority that, individually
or in the aggregate, is reasonably likely to have a Material Adverse Effect on
VA.

     4.24   Insurance Ratings. As of the date hereof, VA has no reason to
believe that any rating presently held by VA or any of its Subsidiaries is
likely to be modified, qualified, lowered or placed under surveillance for a
possible downgrade for any reason other than as a result of the transactions
contemplated hereby.

     4.25   Reinsurance, etc. VA has no reason to believe that any material
amount recoverable pursuant to any material Reinsurance Agreement applicable to
the VA Insurance Subsidiaries or their properties or assets reflected in the VA
SAP Statements is not fully collectible in due course. Each VA Insurance
Subsidiary is entitled to take full credit in its SAP Statements pursuant to
Insurance Laws, rules and regulations for such reinsurance, coinsurance or
excess insurance ceded pursuant to any such Reinsurance Agreement. There are no
assumption reinsurance contracts or arrangements entered into by any VA
Insurance Subsidiary in which such VA Insurance Subsidiary has ceded risk to any
other Person which are material individually or in the aggregate to VA and its
Subsidiaries taken as a whole.

     4.26   Derivatives.  As of December 31, 1998, none of VA and the VA
Subsidiaries was subject to any material exposure, individually or in the
aggregate under any Derivatives to which VA or any of VA Subsidiaries is a
party.

                                      42
<PAGE>

                                   ARTICLE V
                             ADDITIONAL AGREEMENTS


                                      43
<PAGE>

     5.1    Conduct of Business.   From the date hereof and until the Closing,
each of VA and BB will, and will cause each of their respective Subsidiaries to,
conduct their respective businesses and operations  only in the ordinary and
usual course and in a manner consistent with past practices and to the extent
consistent therewith, use their commercially reasonable efforts to preserve
intact their current business organizations, keep available the services of
their current officers and employees and preserve their relationships with
insureds, reinsurers, customers, suppliers, insurance brokers and agents, and
others having business dealings with them to the end that their goodwill and
ongoing businesses shall not be impaired in any material respect at the
Effective Time.  Without limiting the generality of the foregoing, from the date
hereof until Closing except as otherwise expressly contemplated by this
Agreement or as set forth in Section 5.1 of the VA Disclosure Letter or Section
5.1 of the BB Disclosure Letter, as the case may be,  VA and BB shall not, and
shall not permit any of their Subsidiaries to, without the prior written consent
of the other:

               (i)   (A) declare, set aside or pay any dividends on, or
     make any other distributions in respect of, any of their capital
     stock, other (x) than dividends and distributions by their direct
                   -
     or indirect wholly owned Subsidiaries to them and (y) regular
                                                        -
     quarterly dividends payable by BB in an amount not to exceed $.06
     per share, (B) split, combine or reclassify any of their capital
     stock or issue or authorize the issuance of any other securities
     in respect of, in lieu of or in substitution for shares of their
     capital stock, or (C) purchase, redeem or otherwise acquire any
     shares of their respective capital stock or any of their
     Subsidiaries or any other securities thereof or any rights,
     warrants or options to acquire any such shares or other
     securities, except, in the case of clause (C), for the
     acquisition of shares of capital stock from holders of options in
     full or partial payment of the exercise price payable by such
     holder or tax liability arising in connection therewith
     (including by way of exercise of cash settlement rights pursuant
     to the terms of any stock option), upon exercise of stock options
     outstanding on the date of this Agreement in accordance with
     their present terms;

               (ii)  authorize for issuance, issue, deliver, sell,
     pledge or otherwise encumber any shares of their capital stock or
     the capital stock of any of their Subsidiaries, any other voting
     securities or any securities convertible into, or any rights,
     warrants or options to acquire, any such shares, voting
     securities or convertible securities or any other securities or
     equity equivalents (including without limitation stock
     appreciation rights), or contractual obligation valued or
     measured by the value or market price of such capital stock
     (other than the issuance of capital stock upon the exercise of
     stock options outstanding on the date of this Agreement and in
     accordance with their present terms, such issuance, together with
     the acquisitions of shares of shares of capital stock permitted
     under clause (i) above, being referred to herein as "Permitted
     Changes");

               (iii) amend their respective Articles of Incorporation,
     Articles of Association, Bylaws or other comparable charter or
     organizational documents;

                                      44
<PAGE>

               (iv)   except in the ordinary course of business, consistent with
past practice, acquire or agree to acquire by merging or consolidating with, or
by purchasing a substantial portion of the stock or assets of, or by any other
manner, any business or any corporation, partnership, joint venture, association
or other business organization;

               (v)    sell, lease, license, mortgage or otherwise encumber or
subject to any Encumbrance or otherwise dispose of any of their respective
properties or assets that are material, individually or in the aggregate, to
each of them and their Subsidiaries taken as a whole, except in the ordinary
course of business consistent with past practice;

               (vi)   except in the ordinary course of business, consistent with
past practice (A) incur any indebtedness for borrowed money or guarantee any
such indebtedness of another Person (other than its parent or another Subsidiary
of its parent), issue or sell any debt securities or warrants or other rights to
acquire any debt securities of itself, its parent or any other Subsidiary of its
parent, guarantee any debt securities of another Person (other than its parent
or another Subsidiary of its parent), enter into any "keep well" or other
agreement to maintain any financial statement condition of another Person (other
than its parent or another Subsidiary of its parent) or enter into any
arrangement having the economic effect of any of the foregoing, except for
short-term borrowings incurred in the ordinary course of business consistent
with past practice, or (B) make any loans, advances or capital contributions to,
or investments in, any other Person (other than its parent or another Subsidiary
of its parent);

               (vii)  (A) acquire or agree to acquire any assets that are
material, individually or in the aggregate, to VA or BB and their respective
Subsidiaries taken as a whole, other than acquisitions of portfolio investments
of insurance Subsidiaries in the ordinary course of business consistent with
past practice, or (B) make or agree to make any capital expenditures, except in
the ordinary course of business consistent with past practice;

               (viii) pay, discharge or satisfy any claims (including claims of
shareholders), liabilities or obligations (absolute, accrued, asserted or
unasserted, contingent or otherwise), except for the payment, discharge or
satisfaction, of (i) liabilities or obligations in the ordinary course of
business consistent with past practice or in accordance with their terms as in
effect on the date hereof, or (ii) liabilities reflected or reserved against in,
or contemplated by, their most recent consolidated audited financial statements
(or the notes thereof) included in the VA or BB SEC Documents filed prior to the
date hereof, or waive, release, grant, or transfer any rights of material value
or modify or change in any material respect any existing

                                      45
<PAGE>

license, lease, contract or other document, other than in the ordinary course of
business consistent with past practice;

               (ix)   adopt or amend in any material respect (except as may be
required by law or by this Agreement) any bonus, profit sharing, compensation,
stock option, pension, retirement, deferred compensation, employment or other
employee benefit plan, agreement, trust, fund or other arrangement (including
any Benefit Plan) for the benefit or welfare of any employee, director or former
director or employee or, other than increases for individuals (other than
executive officers of BB) in the ordinary course of business consistent with
past practice, increase the compensation or fringe benefits of any director,
employee or former director or employee; pay any benefit not required by any
existing plan, arrangement or agreement, grant any new or modified severance or
termination arrangement or increase or accelerate any benefits payable under
their severance or termination pay policies in effect on the date hereof, other
than any such increase or acceleration provided for under such policies as in
effect on the date of this Agreement;

               (x)    change any material accounting principle used by them,
except for such changes as may be required to be implemented following the date
of this Agreement pursuant to generally accepted accounting principles or rules
and regulations of the SEC promulgated following the date hereof;

               (xi)   take any action that would, or is reasonably likely to,
result in any of their respective representations and warranties in this
Agreement becoming untrue in any material respect, or in any of the conditions
to the Scheme and Merger set forth in Article 6 or Article 7 not being
satisfied;

               (xii)  except in the ordinary course of business and consistent
with past practice, make or change any material tax election, file any material
amendment to any material Tax Return or settle or compromise any material
federal, state, local or foreign tax liability;

               (xiii) take any action that would reasonably be expected to cause
the Merger to fail to qualify as a reorganization within the meaning of Section
368 of the Internal Revenue Code or that would reasonably be expected to cause
the Merger together with the Scheme, when integrated, to fail to qualify as a
transaction described in Section 351 of the Internal Revenue Code; and

               (xiv)  authorize any of, or commit or agree to take any of, the
foregoing actions.

                                      46
<PAGE>

     5.2   Additional Financial Statements.

           (a)  From the date hereof to the Closing Date, each of VA and BB
shall promptly deliver to the other all periodic management reports prepared for
their respective senior management in the ordinary course of business.

           (b)  Promptly after they become available, each of VA and BB shall
furnish to the other all statutory statements of their respective Insurance
Subsidiaries for any calendar years or quarters ending after December 31, 1998,
but prior to the Closing Date. Such statutory statements shall have been
prepared on a basis consistent with past practice and, with respect to the
financial statements included therein, in accordance with Statutory Accounting
Practices.

     5.3   No Solicitation; Notification.

           (a)  Both VA and BB shall, and shall cause their respective officers,
directors, employees, representatives and agents to, immediately cease any
discussions or negotiations with any parties that may be ongoing with respect to
an Acquisition Proposal (as hereinafter defined). From and after the date hereof
until the termination of this Agreement, neither VA nor BB shall, nor shall it
permit any of its Subsidiaries to, authorize or permit any of its officers,
directors or employees or any investment banker, financial advisor, attorney,
accountant or other representative retained by them or any of their Subsidiaries
to, directly or indirectly, (i) solicit, initiate or knowingly encourage
(including by way of furnishing non-public information or assistance), or
knowingly take any other action to facilitate, any inquiries or the making of
any proposal which constitutes, or would reasonably be expected to lead to, any
Acquisition Proposal or (ii) participate in any discussions or negotiations
regarding any Acquisition Proposal; provided that if, at any time the Board of
                                    --------
Directors of either VA and BB determines in good faith, after consultation with
and taking into account the advice of independent legal counsel (who may be such
company's regularly engaged independent counsel), that it is necessary to do so
in order to act in a manner consistent with such Board's fiduciary duties to
such company's shareholders under applicable Law, VA or BB, as the case may be,
may, in response to an unsolicited Acquisition Proposal, and subject to
compliance with Section 5.3(c), (A) furnish information with respect to VA or BB
as the case may be to any person pursuant to a confidentiality agreement in
reasonably customary form and (B) participate in discussions or negotiations
regarding such Acquisition Proposal.  For purposes of this Agreement,
"Acquisition Proposal" means any inquiry, proposal or offer (or any public
announcement of a proposal, plan or intention to do any of the foregoing or any
agreement to engage in the foregoing) from any person relating to any direct or
indirect acquisition or purchase of 20% or more of the assets of VA or BB as the
case may be and their respective Subsidiaries, taken as a whole, or 20% or more
of any class of equity securities of VA or BB as the case may be, any tender
offer or exchange offer that if consummated would result in any person
beneficially owning 20% or more of any class of equity securities of VA or BB as
the case may be, any merger, consolidation, business combination, sale of all or
substantially all the assets, recapitalization, liquidation, dissolution or
similar transaction involving VA or BB or any of their Subsidiaries whose
business constitutes 20% or more of the assets of VA or BB and their respective
Subsidiaries, as the case may be, taken as a whole (other than the

                                      47
<PAGE>

transactions contemplated by this Agreement) or any other transaction the
consummation of which would reasonably be expected to impede, interfere with,
prevent or materially delay the Merger or which would reasonably be expected to
dilute materially the benefits to the other of the transactions contemplated
hereby.

          (b)   Except as set forth in this Section 5.3, neither the Board of
Directors of VA or BB nor any committee thereof shall (i) withdraw or modify, or
propose to withdraw or modify, in a manner adverse to the other company, the
approval or recommendation by such Board of Directors or such committee of this
Agreement or the transactions contemplated hereby, (ii) approve or recommend, or
propose to approve or recommend, any Acquisition Proposal or (iii) cause VA or
BB as the case may be to enter into any agreement with respect to any
Acquisition Proposal.  Notwithstanding the foregoing, in the event that the
Board of Directors of VA or BB determines in good faith, after consultation with
and taking into account the advice of independent legal counsel (who may be such
company's regularly engaged independent counsel), that it is necessary to do so
in order to act in a manner consistent with its fiduciary duties to such
company's shareholders under applicable law, such Board of Directors may
(subject to the other provisions of this Section 5.3) withdraw or modify its
approval or recommendation of this Agreement and the transactions contemplated
hereby, approve or recommend a Superior Proposal (as defined below), cause VA or
BB as the case may be to enter into an agreement with respect to a Superior
Proposal or terminate this Agreement, but in any case involving an Acquisition
Proposal only at a time that is after the third business day following the other
company's receipt of written notice (a "Notice of Superior Proposal") advising
such company that the Board of Directors of the other has received a Superior
Proposal, specifying the material terms and conditions of such Superior Proposal
and identifying the person making such Superior Proposal.  In addition, if VA or
BB proposes to enter into an agreement with respect to any Acquisition Proposal,
it shall concurrently with entering into such agreement pay, or cause to be
paid, to the other the Termination Fee  and the Expense Payment (as such terms
are defined in Section 5.9(b)).  For purposes of this Agreement, a "Superior
Proposal" means any bona fide proposal made by a third party to acquire,
directly or indirectly, for consideration consisting of cash and/or securities,
more than 20% of the shares of capital stock then outstanding or all or
substantially all the assets of VA on the one hand and BB on the other hand and
otherwise on terms which the Board of Directors of VA or BB as the case may be
determines in its good faith judgment (after consultation with and taking into
account the advice of a financial advisor of nationally recognized reputation)
to be more favorable to such company's shareholders than the Merger.

          (c)   In addition to the obligations of VA and BB set forth in
paragraphs (a) and (b) of this Section 5.3, each of VA and BB shall promptly
advise the other orally and in writing of any request for information or of any
Acquisition Proposal, the material terms and conditions of such request or
Acquisition Proposal and the identity of the person making such request or
Acquisition Proposal.

          (d)   Nothing contained in this Section 5.3 shall prohibit VA or BB
from taking and disclosing to its shareholders a position contemplated by Rule
14e-2(a) promulgated under the Exchange Act or from making any disclosure to
such company's shareholders if, in the good faith

                                      48
<PAGE>

judgment of the Board of Directors of such company, after consultation with
independent legal counsel (who may be such company's regularly engaged
independent counsel), failure so to disclose would be inconsistent with its
fiduciary duties to such company's shareholders under applicable law; provided
                                                                      --------
neither VA or BB nor their respective Boards of Directors nor any committee
thereof shall, except as permitted by Section 5.3(b), withdraw or modify, or
propose to withdraw or modify, its position with respect to this Agreement or
the transactions contemplated hereby or approve or recommend, or propose to
approve or recommend, an Acquisition Proposal.

     5.4    Investigation of Business and Properties. From the date hereof until
the earlier of (i) the Effective Time and (ii) termination under Article IX,
each of VA and BB will, and will cause their respective Subsidiaries to, afford
the other, any financial institution providing financing to the other, and their
respective attorneys, accountants, financial advisors and other representatives,
reasonable access during regular business hours upon reasonable notice, to make
such reasonable inspection of the Assets, business and operations of such
company and its Subsidiaries and to inspect and make copies of Contracts, Books
and Records and all other documents and information reasonably requested by the
other and related to the operations and business of such company and its
Subsidiaries, including historical financial information concerning the business
of such company and its Subsidiaries and to meet with designated Personnel of
such company and its Subsidiaries and/or their respective representatives;
provided that any such access shall be conducted in such a manner as not to
- --------
interfere unreasonably with the conduct of such company's operations and
business; provided further, that no disclosure to the other, its counsel,
          -------- -------
accountants or other representatives after the date hereof shall be deemed to be
a reduction of, or otherwise affect, the representations and warranties of such
company set forth in this Agreement.  Each of VA and BB shall furnish to the
other promptly upon request (i) all additional documents and information with
respect to the affairs of such company and its Subsidiaries and (ii) access
during regular business hours to its Personnel and to such company's accountants
and counsel as the other, or its counsel or accountants, may from time to time
reasonably request and VA and BB shall instruct their respective Personnel,
accountants and counsel to cooperate with the other, and to provide such
documents and information as the other and its representatives may reasonably
request; provided that each of VA and BB shall execute and deliver to such
         --------
counsel and accountants such consents and waivers as are customary in connection
in providing such documents and information.   Notwithstanding any right of VA
or BB to investigate and examine the affairs of the other and its Subsidiaries
and notwithstanding any knowledge of facts determined or determinable by VA or
BB pursuant to such investigation or examination, VA and BB have the right to
rely fully upon the representations, warranties, covenants and agreements of the
other contained in this Agreement.

     5.5    Regulatory Matters.

            (a) From the date hereof through the Closing Date, VA and BB shall
cooperate with each other and use their respective commercially reasonable
efforts promptly to prepare and file all necessary documentation with, and to
obtain as promptly as practicable all Licenses and Permits of, all third parties
and Governmental or Regulatory Authorities which are necessary or advisable to
consummate the transactions contemplated by this Agreement, including any
filings under the HSR

                                      49
<PAGE>

Act. VA and BB shall have the right to review in advance, and shall consult with
the other on, in each case subject to any laws relating to the exchange of
information, all the information relating to each other and any of their
respective Subsidiaries, as the case may be, and any of their respective
Affiliates, which appear in any filing made with, or written materials submitted
to, any third party or any Governmental or Regulatory Authority in connection
with the transactions contemplated by this Agreement. The parties hereto agree
that they will consult with each other with respect to the obtaining of all
Licenses and Permits of all third parties and Governmental or Regulatory
Authorities necessary or advisable to consummate the transactions contemplated
by this Agreement, and each party shall keep the other apprised of the status of
matters relating to completion of the transactions contemplated herein. The
party responsible for any such filing shall promptly deliver to the other party
evidence of the filing of all applications, filings, registrations and
notifications relating thereto, and the filing of any supplement, amendment or
item of additional information in connection therewith. The party responsible
for a filing shall also promptly deliver to the other party a copy of each
material notice, order, opinion and other item of correspondence received by
such filing party from any Governmental or Regulatory Authority in respect of
any such application. In exercising the foregoing rights and obligations, VA and
BB shall act reasonably and as promptly as practicable.

          (b)   From the date hereof through the Closing Date, VA and BB shall,
upon request, furnish each other with all information concerning themselves and
their Subsidiaries, directors, officers and shareholders and such other matters
as may be reasonably necessary in connection with any statement, filing, notice
or application made by or on behalf VA or BB, as the case may be, or any of its
respective Affiliates, to any Governmental or Regulatory Authority in connection
with the transactions contemplated by this Agreement.

          (c)   From the date hereof through the Closing Date, VA and BB shall
promptly advise each other upon receiving any communication from any
Governmental or Regulatory Authority whose consent or approval is required for
consummation of the transactions contemplated by this Agreement, which causes
such party to believe that there is a reasonable likelihood that the requisite
consent or approval will not be obtained or that the receipt of such consent or
approval will be materially delayed.

     5.6  Investment Portfolio.  From the date hereof through the Closing Date,
VA and BB shall cause each of their respective Subsidiaries not to change its
investment managers or alter its investment guidelines or criteria (accurate and
complete copies of which have been provided by each of VA and BB to the other)
without the prior written approval of the other and shall cause each of their
respective Subsidiaries to make such changes in its investment managers and to
alter its investment guidelines and criteria as VA and BB may mutually agree.

     5.7  Confidentiality.  Unless and until the Closing has been consummated,
VA and BB shall continue to be subject to the confidentiality provisions of the
Confidentiality Agreement, dated as of January 6, 1999, between VA and BB.


                                      50
<PAGE>

     5.8  Books and Records. Through the Closing, each of VA and BB and their
respective Subsidiaries shall maintain their respective Books and Records in all
material respects in the same manner and with the same care that such Books and
Records have been maintained prior to the execution of this Agreement.

     5.9  Fees and Expenses.

          (a)  Except as otherwise provided in this Agreement, all costs, fees
and expenses incurred in connection with this Agreement and the transactions
contemplated hereby will be paid by the party incurring such costs, fees and
expenses, whether or not the Merger is consummated.

          (b)  In the event that (i) an Acquisition Proposal shall have been
made to BB or any of its Subsidiaries or any of its stockholders (a "BB
Acquisition Proposal") or any Person shall have publicly announced an intention
(whether or not conditional) to make an Acquisition Proposal with respect to BB
or any of its Subsidiaries and (ii) thereafter this Agreement is terminated
pursuant to the provisions of clause (iv) or (v) of Section 9.1, then BB shall
promptly, but in no event later than two days after the date VA makes a written
request for payment, pay VA an amount in dollars equal to $27,000,000 as a
termination fee (the "Termination Fee") and shall promptly, but in no event
later than two days after being notified of such by VA, pay to VA an amount
equal to all of the charges and expenses incurred by VA in connection with this
Agreement and the Other Agreements to which it is a party and the transactions
contemplated by this Agreement and the Other Agreements to which it is a party
up to a maximum amount of $3 million (the "Expense Payment"), in each case
payable by wire transfer of same day funds against presentation of invoices or
other documentation evidencing the incurrence of such expenses.

          (c)  In the event that (i) a BB Acquisition Proposal shall have been
made or any Person shall have publicly announced an intention (whether or not
conditional) to make a BB Acquisition Proposal, (ii) thereafter this Agreement
is terminated pursuant to clause (ix) of Section 9.1, and (iii), within a twelve
month period after termination of this Agreement pursuant to clause (ix) of
Section 9.1, the transaction contemplated in such BB Acquisition Proposal is
consummated or the parties enter into a definitive agreement with regard to the
transaction contemplated in such BB Acquisition Proposal and the transaction is
thereafter consummated, then BB shall promptly, but in no event later than two
days, after consummation of the transaction contemplated in such BB Acquisition
Proposal, pay VA the Termination Fee and shall promptly, but in no event later
than two days, after such date, pay to VA the Expense Payment in an amount equal
to all of the charges and expenses incurred by VA in connection with this
Agreement and the Other Agreements to which it is a party and the transactions
contemplated by this Agreement and the Other Agreements to which it is a party
up to a maximum amount of $3 million, in each case payable by wire transfer of
same day funds against presentation of invoices or other documentation
evidencing the incurrence of such expenses.

          (d)  In the event that (i) an Acquisition Proposal shall have been
made to VA or any of its Subsidiaries or any of its Shareholders (a "VA
Acquisition Proposal") or any Person shall

                                      51
<PAGE>

have publicly announced an intention (whether or not conditional) to make an
Acquisition Proposal with respect to VA or any of its Subsidiaries and (ii)
thereafter this Agreement is terminated pursuant to the provisions of clause
(vi) or (vii) of Section 9.1, then VA shall promptly, but in no event later than
two days after the date BB makes a written request for payment, pay BB the
Termination Fee and shall promptly, but in no event later than two days after
being notified of such by BB, pay to BB the Expense Payment in an amount equal
to all of the charges and expenses incurred by BB in connection with this
Agreement and the Other Agreements to which it is a party and the transactions
contemplated by this Agreement and the Other Agreements to which it is a party
up to a maximum amount of $3 million, in each case payable by wire transfer of
same day funds against presentation of invoices or other documentation
evidencing the incurrence of such expenses.

          (e)  In the event that (i) a VA Acquisition Proposal shall have been
made or any Person shall have publicly announced an intention (whether or not
conditional) to make a VA Acquisition Proposal, (ii) thereafter this Agreement
is terminated pursuant to the provisions of clause (viii) of Section 9.1, and
(iii) within a twelve month period after termination of this Agreement pursuant
to clause (viii) of Section 9.1, the transaction contemplated in such VA
Acquisition Proposal is consummated or the parties enter into a definitive
agreement with regard to the transaction contemplated in such VA Acquisition
Proposal and the transaction is thereafter consummated, then VA shall promptly,
but in no event later than two days, after consummation of the transaction
contemplated in such VA Acquisition Proposal, pay BB the Termination Fee and
shall promptly, but in no event later than two days, after such date, pay to BB
the Expense Payment in an amount equal to all of the charges and expenses
incurred by BB in connection with this Agreement and the Other Agreements to
which it is a party and the transactions contemplated by this Agreement and the
Other Agreements to which it is a party up to a maximum amount of $3 million, in
each case payable by wire transfer of same day funds against presentation of
invoices or other documentation evidencing the incurrence of such expenses.

          (f)  BB and VA acknowledge that its agreement to pay to the other the
Termination Fee and the Expense Payment as set forth in paragraphs (b), (c), (d)
and (e) of this Section 5.9 are an integral part of the transactions
contemplated by this Agreement, and that, without such agreement, VA, on the one
hand and BB, on the other hand, would not enter into this Agreement.
Accordingly, if BB or VA, as applicable, fails promptly to pay the Termination
Fee or the Expense Payment pursuant to paragraph (b), (c), (d) or (e), as
applicable, of this Section 5.9 and, in order to obtain such payments, VA or BB,
as applicable, commences a suit which results in a judgment against the other
(the "Defaulting Party") for the Termination Fee and the Expense Payment set
forth in paragraph (b), (c), (d) or (e) of this Section 5.9, the Defaulting
Party shall pay to the other party the costs and expenses (including reasonable
attorneys' fees) incurred by such party in connection with such suit, together
with interest from the date of termination of this Agreement to the date of
payment on the amounts owed at the prime rate of First Union National Bank in
effect from time to time during such period plus two percent.

     5.10 Preparation of the Form S-4 and the Proxy Statement/Prospectus;
Shareholders Meetings.


                                      52
<PAGE>

          (a)   As soon as practicable following the date of this Agreement, VA
and BB shall prepare and file with the SEC a preliminary Proxy
Statement/Prospectus relating to the Merger and use all commercially reasonable
efforts to obtain and furnish the information required to be included by the SEC
in the Proxy Statement/Prospectus and to respond promptly to any comments made
by the SEC with respect to the preliminary Proxy Statement/Prospectus. VA shall
prepare and file with the SEC the Form S-4, in which the Proxy
Statement/Prospectus will be included as a prospectus of VA with respect to the
MINT Common Shares to be issued in the Merger and the Scheme. Each of VA and BB
shall use commercially reasonable efforts to have the Form S-4 declared
effective under the Securities Act as promptly as practicable after such filing.
VA will use all reasonable efforts to cause the Proxy Statement/Prospectus to be
mailed to VA's shareholders, and BB will use all commercially reasonable efforts
to cause the Proxy Statement/Prospectus to be mailed to BB's shareholders, in
each case as promptly as practicable after the Form S-4 is declared effective
under the Securities Act. MINT shall also take any action (other than qualifying
to do business in any jurisdiction in which it is not now so qualified or filing
a general consent to service of process) required to be taken under any
applicable state securities laws in connection with the issuance of MINT Common
Shares in the Merger and the Scheme, VA shall furnish all information concerning
VA and the holders of VA Common Shares as may be reasonably requested in
connection with any such action and BB shall furnish all information concerning
BB and the holders of BB Common Shares as may be reasonably requested in
connection with any such action. No filing of, or amendment or supplement to,
the Form S-4 or the Proxy Statement/Prospectus, or response to any comments made
by the SEC with respect thereto, will be made by either party without providing
the other party the opportunity to review and comment thereon. VA will advise
BB, promptly after it receives notice thereof, of the time when the Form S-4 has
become effective or any supplement or amendment has been filed, the issuance of
any stop order, the suspension of the qualification of the MINT Common Shares
issuable in connection with the Merger and the Scheme for offering or sale in
any jurisdiction, or any request by the SEC for amendment of the Proxy
Statement/Prospectus or the Form S-4 or comments thereon and responses thereto
or requests by the SEC for additional information. If at any time prior to the
Effective Time any information relating to VA or BB, or any of their respective
affiliates, officers or directors, should be discovered by VA or BB which should
be set forth in an amendment or supplement to either the Form S-4 or the Proxy
Statement/Prospectus, so that any of such documents would not include any
misstatement of a material fact or omit to state any material fact necessary to
make the statements therein, in light of the circumstances under which they were
made, not misleading, the party which discovers such information shall promptly
notify the other party hereto and an appropriate amendment or supplement
describing such information shall be promptly filed with the SEC and, to the
extent required by law, disseminated to the shareholders of VA and BB.

          (b)   VA (i) shall, as soon as practicable following the Form S-4
being declared effective by the SEC, duly call, give notice of, convene and hold
a meeting of its shareholders (the "VA Shareholders Meeting") for the purpose of
obtaining the VA Shareholder Approval and (ii) shall, through its Board of
Directors, recommend to its shareholders the approval and adoption of this
Agreement, the issuance of MINT Common Shares in the Merger and the Scheme and
the other

                                      53
<PAGE>

transactions contemplated hereby unless, in the case of this clause (ii), in the
good faith judgment of the Board of Directors of VA, after consultation with
outside counsel, the failure to take the foregoing action would be inconsistent
with its obligations under applicable law. Without limiting the generality of
the foregoing but subject to its rights to terminate this Agreement pursuant to
clause (vii) of Section 9.1, VA agrees that its obligations pursuant to clause
(i) of this Section 5.10(b) shall not be affected by the commencement, public
proposal, public disclosure or communication to VA of any Acquisition Proposal
applicable to VA or by the withdrawal or modification by the Board of Directors
of VA, in accordance with clause (ii) above, of its recommendation to the
shareholders of VA that such shareholders approve and adopt this Agreement, the
Merger and the other transactions contemplated hereby.

          (c)   BB (i) shall, as soon as practicable following the Form S-4
being declared effective by the SEC, duly call, give notice of, convene and hold
a meeting of its shareholders (the "BB Shareholders Meeting") for the purpose of
obtaining the BB Shareholder Approval and (ii) shall, through its Board of
Directors, recommend to its shareholders the approval and adoption of this
Agreement, the Scheme and the other transactions contemplated hereby unless, in
the case of this clause (ii), in the good faith judgment of the Board of
Directors of BB, after consultation with outside counsel, the failure to take
the foregoing action would be inconsistent with its obligations under applicable
law. Without limiting the generality of the foregoing but subject to its rights
to terminate this Agreement pursuant to clause (v) of Section 9.1, BB agrees
that its obligations pursuant to clause (i) of this Section 5.10(c) shall not be
affected by the commencement, public proposal, public disclosure or
communication to BB of any Acquisition Proposal applicable to BB or by the
withdrawal or modification by the Board of Directors of BB, in accordance with
clause (ii) above, of its recommendation to the shareholders of BB that such
shareholders approve and adopt this Agreement, the Scheme and the other
transactions contemplated hereby.

          (d)   BB and VA will use all reasonable efforts to hold the VA
Shareholders Meeting and the BB Shareholders Meeting on the same date and as
soon as practicable after the date hereof.

     5.11 Public Announcements.  The initial press release with respect to this
Agreement and the transactions contemplated hereby shall be a joint press
release and thereafter BB and VA shall obtain the written consent of the other
prior to issuing press releases or otherwise making public announcements with
respect to this Agreement and the transactions contemplated hereby and prior to
making any filings with any third party or any Governmental or Regulatory
Authority (including the NYSE) with respect thereto, except to the extent
required by law or by obligations pursuant to the listing agreement with or
rules of the NYSE.

     5.12 Efforts to Consummate. Subject to the terms and conditions herein
provided, each of the parties hereto agrees to use its commercially reasonable
efforts to take, or cause to be taken, all action and to do, or cause to be
done, all things necessary, proper or advisable to consummate, as promptly as
practicable, the transactions contemplated hereby, including the obtaining of
all necessary consents, waivers, authorizations, orders and approvals of third
parties, whether private

                                      54
<PAGE>

or governmental, required of it to enable it to comply with the conditions
precedent to consummating the transactions contemplated by this Agreement. Each
party agrees to cooperate fully with the other party in assisting it to comply
with this Section 5.12. Without limiting the generality of the foregoing, each
party hereto shall defend and cooperate with each other party in any defending
legal proceedings, whether judicial or administrative and whether brought
derivatively or on behalf of third parties, challenging this Agreement or the
consummation of the transactions contemplated hereby. No consideration, whether
such consideration shall consist of the payment of money or shall take any other
form, for any such consent, waiver or agreement necessary to the consummation of
the transactions contemplated hereby shall be given or promised by VA or BB
without the prior written consent of the other. Notwithstanding the foregoing,
nothing contained herein shall require (i) any party hereto or any of their
respective Affiliates to sell, transfer, divest or otherwise dispose of any of
its respective material lines of business, material assets or material
properties in connection with this Agreement or any of the transactions
contemplated hereby, or (iii) any party hereto to initiate any litigation, make
any substantial payment or incur any material economic burden (including as a
result of any divestiture), except for payments a party presently is
contractually obligated to make, to obtain any consent, waiver, authorization,
order or approval.

     5.13  Employee Benefits.  Until the second anniversary of the Closing, VA
shall maintain or caused to be maintained for the benefit of the employees of VA
or any of its subsidiaries who were BB employees immediately prior to the
Closing employee benefit plans and programs that provide such employee with
benefits, rights and entitlements which, in the aggregate, are substantially
comparable to the benefits, rights and entitlements provided to such employee
under the employee benefit plans and programs in which the employee participated
immediately prior to the Closing (other than the BB Option Plans or any other
stock plans).  Following the Effective Time, VA shall honor in accordance with
their terms all employment, severance and other compensation agreements and
arrangements existing on or prior to the execution of this Agreement which are
between BB and any of its respective Subsidiaries and any officer, director or
employee thereof.

     5.14  Agreements With Respect to Affiliates.

           (a)  At least five days prior to the Closing Date, BB shall deliver
to VA and MINT a list of names and addresses of those Persons who will be, in
the opinion of the BB, as of the time of the BB Shareholders Meeting,
"affiliates" of BB within the meaning of Rule 145 under the Securities Act. BB
shall use reasonable best efforts to cause each Person who is identified as an
"affiliate" in such letter to deliver to VA and MINT, prior to the Closing Date,
a written agreement in connection with restrictions on affiliates under Rule
145, in customary form mutually agreeable to BB and VA.

          (b)   VA shall not be required to maintain the effectiveness of the
Form S-4 or any other registration statement under the Securities Act for the
purposes of resale of VA Common Shares by such affiliates received in the Scheme
and the certificates representing MINT Common Shares received by such affiliates
shall bear a customary legend regarding applicable Securities Act restrictions
and the provisions of this Section 5.14.

                                      55
<PAGE>

     5.15   Indemnification, Exculpation and Insurance.

            (a)  From and after the Effective Time VA shall, to the extent
permitted by applicable law, indemnify, defend, protect and hold harmless each
person who is now, or has been at any time prior to the date of this Agreement
or who becomes such prior to the Effective Time, an officer or director of BB or
any of its respective Subsidiaries (the "Indemnified Parties") against (i) all
losses, claims, damages, costs, expenses, liabilities or judgments or amounts
that are paid in settlement with the approval of the indemnifying party (which
approval shall not be unreasonably withheld) of or in connection with any claim,
action, suit, proceeding or investigation based in whole or in part on or
arising in whole or in part out of the fact that such person is or was a
director or officer of BB or any of its Subsidiaries whether pertaining to any
matter existing or occurring at or prior to the Effective Time and whether
asserted or claimed prior to, or at or after, the Effective Time ("Indemnified
Liabilities"), and (ii) all Indemnified Liabilities based in whole or in part
on, or arising in whole or in part out of, or pertaining to this Agreement,
Other Agreements to which it is a party or the transactions contemplated hereby
and thereby. VA will pay all expenses of each Indemnified Party in advance of
the final disposition of any such action or proceeding, to the fullest extent
permitted by law, provided, that such Indemnified Party delivers to VA his or
                  --------
her undertaking to reimburse such advanced expenses in the event it is finally
determined by a court of competent jurisdiction that such Indemnified Party is
not entitled to be indemnified hereunder. Promptly after receipt by an
Indemnified Party of actual notice of any claim, suit, action, proceeding or
investigation (collectively, a "Claim") for which indemnification hereunder may
be sought, the Indemnified Party shall give notice thereof to VA, and the
Indemnified Party shall permit VA (at the expense of VA) to assume the defense
of such Claim, provided, that (i) counsel for VA who shall conduct the defense
               --------        -
of such Claim shall be reasonably satisfactory to the Indemnified Party, and the
Indemnified Party may participate in such defense at such Indemnified Party's
expense, and (ii) the failure of any Indemnified Party to give notice as
              --
provided herein shall not relieve VA of its indemnification obligation hereunder
except to the extent that such failure results in a lack of actual notice to VA
and VA is prejudiced as a result of such failure to give notice.  Except with
the prior written consent of the Indemnified Party, VA, in the defense of any
such claim or litigation, shall not consent to entry of any judgment or enter
into any settlement that provides for injunctive or other nonmonetary relief
affecting the Indemnified Party or that does not include as an unconditional
term thereof the giving by each claimant or plaintiff to such Indemnified Party
of a release from all liability with respect to such Claim.  In the event that
the Indemnified Party shall in good faith determine that VA and the Indemnified
Party have differing interests or the Indemnified Party may have available to it
one or more defenses or counterclaims that are inconsistent with one or more of
those that may be available to VA in respect of such Claim, the Indemnified
Party shall have the right at all times to take over and assume control over the
defense, settlement, negotiations or litigation relating to any such Claim with
counsel of its choice at the sole cost of VA, provided, that if the Indemnified
                                              ---------
Party does so take over and assume control, the Indemnified Party shall not
settle such claim or litigation without the written consent of VA, such consent
not to be unreasonably withheld. In the event that VA does not accept the
defense of any matter as above provided, the Indemnified Party shall have the
full right to defend against any such claim or demand, and shall be entitled to
settle or agree to pay in full such claim or demand and be

                                      56
<PAGE>

indemnified hereunder. In any event, VA and the Indemnified Party shall
cooperate in the defense of any Claim.

           (b)   Without limiting the foregoing, VA and BB agree that all rights
to indemnification and exculpation from liabilities for acts or omissions
occurring at or prior to the Effective Time now existing in favor of the current
or former directors or officers of BB and its Subsidiaries as provided in their
respective articles of incorporation or by-laws (or comparable organizational
documents) and any indemnification agreements of BB (other than any entered into
in violation of Section 5.1 hereof), shall survive the Merger and shall continue
in full force and effect in accordance with their respective terms.

           (c)   For seven years after the Effective Time, VA shall maintain in
effect BB's respective current directors' and officers' liability insurance
covering acts or omissions occurring prior to the Effective Time with respect to
those persons who are currently covered by BB's respective directors' and
officers' liability insurance policy on terms with respect to such coverage and
amount no less favorable than those of such policy in effect on the date hereof;
provided that VA may substitute therefor policies of VA or its subsidiaries
- --------
containing terms with respect to coverage and amount no less favorable to such
directors or officers; provided further, that if the existing or substituted
                       -------- -------
directors' and officers' liability insurance expires, is terminated or canceled
during such seven-year period, VA will obtain as much directors' and officers'
liability insurance as can be obtained for the remainder of such period for a
premium not in excess of 300% of the aggregate premiums paid by BB in 1998 on an
annualized basis for such purpose.

           (d)   The provisions of this Section 5.15 are intended to be for the
benefit of, and will be enforceable by, each Indemnified Party, his or her heirs
and his or her representatives and are in addition to, and not in substitution
for, any other rights to indemnification or contribution that any such person
may have by contract or otherwise.

     5.16  NYSE Listing and Delisting. VA shall use its commercially reasonable
efforts to cause the MINT Common Shares to be approved for listing on the NYSE
subject to official notice of issuance. VA and BB shall use their respective
reasonable efforts to cause the VA Common Shares and the BB Common Shares,
respectively to be delisted from the NYSE and de-registered under the Exchange
Act as soon as practicable after the Effective Time.

     5.17  Formation of MINT and Sub.

          (a)    As soon as practicable following the date of this Agreement,
(i) VA shall cause MINT to be formed as a Virginia corporation, and shall cause
MINT to adopt its Articles of Incorporation and its Bylaws in accordance with
the VSCA and the terms hereof, which Articles and By-Laws shall be substantially
identical to the Articles and By-Laws of VA, MINT shall cause Sub to be formed
as Virginia corporation and shall cause Sub to adopt its Articles of
Incorporation and its Bylaws in accordance with the VSCA and the terms hereof,
which Articles of Incorporation and By-Laws shall be reasonably satisfactory to
BB and VA.

                                      57
<PAGE>

          (b)  Immediately after the formation of MINT and Sub, respectively,
(i) VA shall cause (1) MINT and Sub to adopt and become parties to this
Agreement, (2) the respective Boards of Directors of MINT and Sub to approve the
Merger and this Agreement (and to recommend approval of the Merger and this
Agreement to their respective shareholders) and (3) immediately following the
taking of the actions contemplated by subclauses (1) and (2) above, MINT to
approve the Merger in its capacity as sole shareholder of Sub, and (ii)
immediately following the taking of the actions contemplated by clause (i)
above, VA shall approve the Merger in its capacity as sole shareholder of MINT.


                                  ARTICLE VI
                        CONDITIONS TO OBLIGATIONS OF VA

     The obligation of VA to consummate the transactions contemplated by this
Agreement shall be subject, in the sole discretion of VA, to the satisfaction,
on or prior to the Closing Date, of each of the following conditions, any of
which may be waived by VA in accordance with Section 10.8:

     6.1  Representations and Warranties.  The representations and warranties of
BB contained in this Agreement shall be true and correct in all material
respects as of the date of this Agreement, and the representations and
warranties of BB in this Agreement shall be true and correct as of the Closing
Date as though made on and as of the Closing Date (except to the extent any such
representation or warranty expressly speaks as of an earlier specified date)
except where the failure of such representations and warranties to be so true
and correct (without giving effect to any qualification as to "Material Adverse
Effect," "material" or similar qualifications) are not, individually or in the
aggregate, reasonably likely to have a Material Adverse Effect on BB.

     6.2  Material Adverse Change. There shall not have been any material
adverse change in the assets, liabilities, condition (financial or otherwise),
results of operations or business of BB and its Subsidiaries taken as a whole
since June 30, 1999, nor any occurrence or circumstance that with the passage of
time would result in such material adverse change; provided that a material
                                                   --------
adverse change shall not include (i) changes solely in the market price of VA
Common Shares or BB Common Shares or (ii) any change resulting from (x) changes
in general economic conditions, (y) changes in the market level of investment
portfolios, or (z) changes affecting the property-casualty insurance industry
generally.

     6.3  Performance of this Agreement.  BB shall have, in all material
respects, performed all covenants and agreements and complied with all
conditions required by this Agreement to be performed or complied with by BB
prior to or on the Closing Date.

     6.4  Injunction.  No temporary restraining order, preliminary or permanent
injunction or other order issued by any court of competent jurisdiction or other
legal restraint or prohibition preventing the consummation of the Merger or the
Scheme shall be in effect; provided, however, that

                                      58
<PAGE>

the parties hereto shall use their commercially reasonable efforts to have any
such injunction, order, restraint or prohibition vacated.

     6.5   Shareholder Approval.  Each of the BB Shareholder Approval and the VA
Shareholder Approval shall have been obtained.

     6.6   Governmental Approvals.  All of the BB Designated Insurance Approvals
and the VA Designated Insurance Approvals shall have been obtained.  The Court
shall have sanctioned the Scheme on the terms contemplated by this Agreement.

     6.7   NYSE Listing. The MINT Common Shares to be issued in conjunction with
the transactions contemplated hereby and to be received by the holders of BB
Common Shares and VA Common Shares in connection with the Merger and the Scheme
shall have been approved for listing on the NYSE, subject to notice of issuance,
effective as of the Effective Time.

     6.8   HSR Act.  The waiting period, and any extension of time thereof,
applicable to the Merger under the HSR Act shall have been terminated or shall
have expired.

     6.9   Form S-4.  The Form S-4 shall have become effective under the
Securities Act and shall not be the subject of any stop order or proceedings
seeking a stop order, and any material "blue sky" and other state securities
laws applicable to the issuance of the VA Common Shares to be issued in
connection with the Merger and the Scheme shall have been complied with.

     6.10  Tax Opinion.  The Board of Directors of VA shall have received from
McGuire, Woods, Battle & Boothe LLP on the Closing Date a legal opinion that the
Merger will be treated for United States federal income tax purposes as a
reorganization within the meaning of Section 368(a) of the Internal Revenue
Code, and that VA and MINT will each be a party to that reorganization within
the meaning of Section 368(b) of the Internal Revenue Code.  In rendering such
opinion, counsel may require and rely upon representations of VA and BB and
certificates of shareholders that beneficially own five percent or more of any
class of stock of VA or BB, in each case reasonably satisfactory to such
counsel.

     6.11  Frustration of Closing Conditions. VA may not rely on the failure of
any condition set forth in this Article VI to be satisfied if such failure was
caused by VA's failure to use reasonable efforts to consummate the Scheme, the
Merger and the other transactions contemplated by this Agreement and the Other
Agreements to which it is a party.

                                      59
<PAGE>

                                  ARTICLE VII
                        CONDITIONS TO OBLIGATIONS OF BB

     The obligation of BB to consummate the transactions contemplated by this
Agreement shall be subject, in the sole discretion of BB, to the satisfaction,
on or prior to the Closing Date, of each of the following conditions, any of
which may be waived by BB in accordance with Section 10.8.

     7.1  Representations and Warranties. The representations and warranties of
VA contained in this Agreement shall be true and correct in all material
respects as of the date of this Agreement, and the representations and
warranties of VA in this Agreements shall be true and correct as of the Closing
Date as though made on and as of the Closing Date (except to the extent any such
representation or warranty expressly speaks as of an earlier specified date)
except where the failure of such representations and warranties to be so true
and correct (without giving effect to any qualification as to "Material Adverse
Effect," "material" or similar qualifications) are not, individually or in the
aggregate, reasonably likely to have a Material Adverse Effect on VA.

     7.2  Material Adverse Change. There shall not have been any material
adverse change in the assets, liabilities, condition (financial or otherwise),
results of operations or business of VA and its Subsidiaries taken as a whole
since June 30, 1999, nor any occurrence or circumstance that with the passage of
time would result in such material adverse change; provided that a material
                                                   --------
adverse change shall not include (i) changes solely in the market price of VA
Common Shares or BB Common Shares or (ii) any change resulting from (x) changes
in general economic conditions, (y) changes in the market level of investment
portfolios, or (iii) changes affecting the property-casualty insurance industry
generally.

     7.3  Performance of this Agreement. VA shall have, in all material
respects, performed all covenants and agreements and complied with all
conditions required by this Agreement to be performed or complied with by VA
prior to or on the Closing Date.

     7.4  Injunction.  No temporary restraining order, preliminary or permanent
injunction or other order issued by any court of competent jurisdiction or other
legal restraint or prohibition preventing the consummation of the Scheme and the
Merger shall be in effect; provided, however, that the parties hereto shall use
their commercially reasonable efforts to have any such injunction, their best
order, restraint or prohibition vacated.

     7.5  Shareholder Approval. Each of the VA Shareholder Approval and the BB
Shareholder Approval shall have been obtained.

     7.6  Governmental Approvals. All of the BB Designated Insurance Approvals
and the VA Designated Insurance Approvals shall have been obtained. The Court
shall have sanctioned the Scheme on the terms contemplated by this Agreement.







                                      60



<PAGE>

     7.7  NYSE Listing.  The MINT Common Shares to be issued in conjunction with
the transactions contemplated hereby and to be received by the holders of BB
Common Shares and VA Common Shares in connection with the Merger and the Scheme
shall have been approved for listing on the NYSE, subject to notice of issuance,
effective as of the Effective Time.

     7.8  HSR Act. The waiting period, and any extension of time thereof,
applicable to the Merger under the HSR Act shall have been terminated or shall
have expired.

     7.9  Form S-4. The Form S-4 shall have become effective under the
Securities Act and shall not be the subject of any stop order or proceedings
seeking a stop order, and any material "blue sky" and other state securities
laws applicable to the issuance of the MINT Common Shares to be issued in
connection with the Merger and the Scheme shall have been complied with.

     7.10 Tax Opinion. The Board of Directors of BB shall have received from
Debevoise & Plimpton on the Closing Date a legal opinion that the Merger,
together with the Scheme, when integrated, will be treated for United States
federal income tax purposes as a transaction described in Section 351 of the
Code. In rendering such opinion, counsel may require and rely upon
representations of VA and BB, opinions of local counsel, and certificates of
shareholders that beneficially own five percent or more of any class of stock of
VA or BB, in each case reasonably satisfactory to such counsel.

     7.11 Frustration of Closing Conditions. BB may not rely on the failure of
any condition set forth in this Article VII to be satisfied if such failure was
caused by BB's failure to use reasonable efforts to consummate the Merger and
the Scheme and the other transactions contemplated by this Agreement
and the Other Agreements to which it is a party.

                                 ARTICLE VIII
                NON-SURVIVAL OF REPRESENTATIONS AND WARRANTIES

     8.1  Non-Survival of Representations and Warranties. None of the
representations and warranties in this Agreement or in any instrument delivered
pursuant to this Agreement shall survive the Effective Time.

                                  ARTICLE IX
                                  TERMINATION

     9.1  Termination. This Agreement may be terminated at any time prior to the
Closing whether before or after approval by the shareholders of the Company and
without further shareholder action:

               (i)  by the mutual written consent of the Boards of Directors of
     BB and VA;

                                      61

<PAGE>

               (ii)   by VA, if any event occurs which renders impossible
compliance with one or more of the conditions set forth in Article VI hereof,
which condition or conditions are not waived by VA;

               (iii)  by BB, if any event occurs which renders impossible
compliance with one or more of the conditions set forth in Article VII hereof,
which condition or conditions are not waived by BB;

               (iv)   by VA, if (A) the Board of Directors of BB shall have
failed to approve and recommend or shall have withdrawn or modified in a manner
adverse to VA its approval or recommendation of the Scheme or this Agreement, or
approved or recommended any Acquisition Proposal, (B) BB shall have entered into
any agreement with respect to any Superior Proposal in accordance with Section
5.3(b) of this Agreement or (C) the Board of Directors of BB shall have resolved
to take any of the foregoing actions;

               (v)    by BB in connection with entering into a definitive
agreement in accordance with Section 5.3(b), provided that it has complied with
                                             --------
all provisions thereof, including the notice provisions therein and the payment
of the Termination Fee and Expense Payment (if applicable), and provided that BB
                                                                --------
shall not have breached in any material respect any other provision of Section
5.3;

               (vi)   by BB, if (A) the Board of Directors of VA shall have
failed to approve and recommend or shall have withdrawn or modified in a manner
adverse to BB its approval or recommendation of the Merger or this Agreement, or
approved or recommended any Acquisition Proposal, (B) VA shall have entered into
any agreement with respect to any Superior Proposal in accordance with Section
5.3(b) of this Agreement or (C) the Board of Directors of VA shall have resolved
to take any of the foregoing actions;

               (vii)  by VA in connection with entering into a definitive
agreement in accordance with Section 5.3(b), provided that it has complied with
                                             --------
all provisions thereof, including the notice provisions therein and the payment
of the Termination Fee and Expense Payment (if applicable), and provided that VA
                                                                --------
shall not have breached in any material respect any other provision of Section
5.3;

               (viii) by either BB or VA if any required approval of the
stockholders of VA shall not have been obtained by reason of the failure to
obtain the required vote upon a vote held at a duly held meeting of stockholders
or at any adjournment thereof;

                                      62
<PAGE>

               (ix)  by either VA or BB if any required approval of the
stockholders of BB shall not have been obtained by reason of the failure to
obtain the required vote upon a vote held at a duly held meeting of stockholders
or at any adjournment thereof; or

               (x)   by either BB or VA if the Closing has not occurred by 11:59
p.m., June 30, 2000.

     9.2   Restructuring. Prior to any termination of this Agreement (a) by BB
pursuant to clause (iii) of Section 9.1 resulting from the failure to receive
the opinion referred to in Section 7.9 or (b) by VA pursuant to clause (ii) of
Section 9.1 resulting from the failure to receive the opinion referred to in
Section 6.9, the parties hereto will negotiate in good faith to restructure the
transactions contemplated hereby so as to permit the delivery of such opinions
or letters without adversely effecting the economic or business benefits of the
transactions contemplated hereby to VA, BB and their respective shareholders.

     9.3   Procedure: Effect of Termination. If this Agreement is terminated as
provided in Section 9.1, written notice thereof shall forthwith be given by the
terminating party to the other party, and this Agreement shall thereupon
terminate and become void and of no further force and effect and there shall be
no further liability or obligation on the part of either party hereto except for
the obligations under Sections 5.7, 5.9 and 9.1; provided that termination of
                                                 --------
this Agreement by VA or BB pursuant to clause (ii), (iii), (viii) or (ix) of
Section 9.1, respectively, shall not relieve a defaulting or breaching party
(the "Breaching Party"), whether or not it is the terminating party, of
liability for damages actually incurred by the other party as a result of
intentional breach of this Agreement by the Breaching Party.


                                   ARTICLE X
                              GENERAL PROVISIONS

     10.1  Notices. All notices required to be given hereunder shall be in
writing and shall be deemed to have been given if (i) delivered personally or by
documented courier or delivery service, (ii) transmitted by facsimile during
normal business hours or (iii) mailed by registered or certified mail (return
receipt requested and postage prepaid) to the following listed persons at the
addresses and facsimile numbers specified below, or to such other persons,
addresses or facsimile numbers as a party entitled to notice shall give, in the
manner hereinabove described, to the others entitled to notice:

                                      63
<PAGE>

          (a)    If to VA, to:

                 Markel Corporation
                 4551 Cox Road
                 Glen Allen, Virginia 23059

                 Attention: Steven A. Markel
                 Facsimile No.: 804-527-3810
                        and
                 Gregory B. Nevers, Esq.

                 and to:

                 McGuire, Woods, Battle & Boothe LLP
                 One James Center
                 901 E. Cary Street
                 Richmond, Virginia 23219
                 Attention:  Leslie A. Grandis, Esq.
                 Facsimile No.:  804-775-1061

          (b)    If to BB, to:

                 Terra Nova (Bermuda) Holdings Ltd.
                 Richmond House
                 2nd Floor
                 12 Par-la-ville Road
                 Hamilton HM 8, Bermuda
                 Facsimile No.: (44-1) 296-6645
                 Attention:     John J. Dwyer and
                                Jean M. Waggett, Esq.

                 and to:

                 Debevoise & Plimpton
                 875 Third Avenue
                 New York, NY 10022
                 Attention:  Edward A. Perell, Esq.
                 Facsimile No.: 212-909-6836

If given personally or by documented courier or delivery service, or transmitted
by facsimile, a notice shall be deemed to have been given when it is received.
If given by mail, it shall be deemed to have been given on the third business
day following the day on which it was posted.

                                      64
<PAGE>

     10.2  Interpretation. The table of contents and headings contained in this
Agreement are for reference purposes only and shall not affect the meaning or
interpretation of this Agreement. For purposes of this Agreement, the words
"includes" and "including" shall mean "including without limitation." All
accounting terms not defined in this Agreement shall have the meaning determined
by GAAP. All capitalized terms defined herein are equally applicable to both the
singular and plural forms. This Agreement has been jointly prepared by the
parties hereto and the terms hereof shall not be construed in favor of or
against any party on account of its participation in such preparation.

     10.3  Entire Agreement. This Agreement, the Disclosure Letters and the
Annexes and Exhibits hereto, contain the entire agreement among the parties with
respect to the subject matter hereof and there are no agreements,
understandings, representations or warranties between the parties other than
those set forth or referred to herein; provided that the forms of agreements
                                       --------
attached hereto as Exhibits shall be superseded by the copies of such agreements
and opinions executed and delivered by the respective parties thereto, the
execution and delivery of such agreements and opinions by the parties thereto to
be conclusive evidence of such parties' approval of any change or modification
therein.

     10.4  No Third Party Beneficiaries. Except as otherwise provided in Section
5.15, nothing in this Agreement (whether expressed or implied) is intended to
confer upon any person other than the parties hereto and their respective
permitted successors and assigns, any rights or remedies under or by reason of
this Agreement nor is anything in this Agreement intended to relieve or
discharge the liability of any party hereto, nor shall any provision hereof give
any person any right of subrogation against, or action over against any party.

     10.5  Successors and Assigns. This Agreement shall be binding upon and
inure to the benefit of the parties hereto and their respective successors and
assigns; provided that no party hereto will assign its rights or delegate its
         --------
obligations under this Agreement without the express prior written consent of
each other party hereto

     10.6  Severability. In the event that this Agreement or any other
instrument referred to herein, or any of their respective provisions, or the
performance of any such provision, is found to be invalid, illegal or
unenforceable under applicable law now or hereafter in effect, the parties shall
be excused from performance of such portions of this Agreement as shall be found
to be invalid, illegal or unenforceable under the applicable laws or regulations
without, to the maximum extent permitted by law, affecting the validity of the
remaining provisions of the Agreement. Should any method of termination of this
Agreement or a portion thereof be found to be invalid, illegal or unenforceable,
such method shall be reformed to comply with the requirements of applicable law
so as, to the greatest extent possible, to allow termination by that method.
Nothing herein shall be construed as a waiver of any party's right to challenge
the validity of such law.

     10.7  Amendment. This Agreement may be amended, modified or supplemented at
any time by the parties hereto, provided, however, that after receipt of the VA
Shareholder Approval or the BB Shareholder Approval, there shall be made no
amendment that by law requires further

                                      65
<PAGE>

approval by such shareholders without the further approval of such shareholders.
This Agreement may be amended only by an instrument in writing signed by each of
the parties hereto.

     10.8  Extension; Waiver. At any time prior to the Closing either party to
this Agreement may (i) extend the time for the performance of any of the
obligations of the other party hereto, (ii) waive a breach of a representation
or warranty of the other party hereto, or (iii) waive compliance by the other
party hereto with any of the agreements or conditions contained herein. Any such
extension or waiver shall be valid if set forth in a written instrument signed
by the party giving the extension or waiver. No waiver of any of the provisions
of this Agreement shall be deemed or shall constitute a waiver of any other
provision hereof (whether or not similar), nor shall such waiver constitute a
continuing waiver unless otherwise expressly provided.

     10.9  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 constitute one and the same instrument.

     10.10 Governing Law. Except for Article II in so far as it relates to the
Merger, including issuance of the MINT Common Shares to holders of VA Common
Shares and the issuance of Mint Common Shares to holders of BB Common Shares,
which shall be governed by the laws of Virginia, or the Scheme, which shall be
governed by the laws of Bermuda, this Agreement shall be governed in all
respects by the laws of the State of New York without regard to any laws or
regulations relating to choice of laws (whether of the State of New York or any
other jurisdiction) that would cause the application of the laws of any
jurisdiction other than the State of New York.

     10.11 Disclosure Letter. The parties acknowledge that the Disclosure
Letters (i) relate to certain matters concerning the disclosures required and
transactions contemplated by this Agreement, (ii) are qualified in their
entirety by reference to specific provisions of this Agreement, (iii) are not
intended to constitute and shall not be construed as indicating that such matter
is required to be disclosed, nor shall such disclosure be construed as an
admission that such information is material with respect to the BB or VA, as the
case may be, except to the extent required by this Agreement, and (iv)
disclosure of the information contained in one section or part of the BB
Disclosure Letter or the VA Disclosure Letter shall be deemed as proper
disclosure for all sections or parts of the BB Disclosure Letter or the VA
Disclosure Letter, as the case may be, only if appropriately cross-referenced or
if the relevance thereof is reasonably apparent from the context in which it
appears.

                                      66
<PAGE>

     IN WITNESS WHEREOF the parties hereto have caused this Agreement to be
executed and their corporate seals to be hereto affixed and attested by their
duly authorized officers.


                                   MARKEL CORPORATION



                                   By:/s/ Steven A Markel
                                      -------------------------------
                                   Title:Vice Chairman
                                         ----------------------------


                                   TERRA NOVA (BERMUDA) HOLDINGS LTD.



                                   By:/s/ John J. Dwyer
                                      -------------------------------
                                   Title:Chairman
                                         ----------------------------

                                      67

<PAGE>

                                                                    Exhibit 99.2
                                                                  CONFORMED COPY

                            STOCKHOLDERS AGREEMENT

   STOCKHOLDERS AGREEMENT (this "Agreement") dated as of August 15 1999, by and
among Markel Corporation, a Virginia corporation ("VA"), Terra Nova (Bermuda)
Holdings Ltd., a Bermuda corporation ("BB"), and the other parties signatory
hereto (each a "Stockholder" and together, the "Stockholders").

                                   RECITALS

   A.  Simultaneously herewith VA is entering into an Agreement and Plan of
Merger and Scheme of Arrangement between VA and BB dated as of August 15, 1999
(the "Merger Agreement").

   B.  The Merger Agreement provides for (i) the merger (the "Merger") of Mint
Sub Ltd., a corporation to be organized under the laws of Virginia as a wholly-
owned subsidiary of Virginia Holdings Inc ("Mint"), a corporation to be
organized under the laws of Virginia, with and into VA and (ii) a Scheme of
Arrangement between BB and certain of its shareholders (the "Scheme"). Pursuant
to the Merger and the Scheme, the holders of the outstanding capital stock of BB
and VA, respectively, will receive the applicable consideration set forth in the
Merger Agreement. Upon consummation of the Merger and the Scheme, BB will be a
wholly owned subsidiary of Mint, which will change its name to Markel
Corporation.

   C.  Each Stockholder owns that number of BB's Class A Ordinary Shares, par
value U.S. $5.80 per share ("Class A Stock") and Class B Ordinary Shares, par
value U.S. $5.80 per share ("Class B Stock") set forth next to such
Stockholder's name on Exhibit A hereto.

   D.  As a condition to its willingness to enter into the Merger Agreement, VA
has required that each Stockholder agree, and each Stockholder has agreed, among
other things, to execute and deliver this Agreement with respect to the Class A
Stock and Class B Stock now owned or in the future acquired by such Stockholder
(all such shares, including those now owned and those acquired in the future
being referred to herein as the "Shares"), on the terms and conditions provided
for herein.

   E.  Capitalized terms used but not defined herein shall have the meanings set
forth in the Merger Agreement.

   NOW, THEREFORE, in consideration of the foregoing and the representations,
warranties and agreements herein contained, the parties hereto agree as follows:
<PAGE>

   1.  Irrevocable Proxy. Each Stockholder hereby irrevocably appoints VA or any
designee of VA the lawful agent, attorney and proxy of such Stockholder, during
the term of this Agreement at any meeting of the Stockholders of BB, however
called, or in connection with any written consent of the Stockholders of BB, to
vote (or cause to be voted) the Shares held of record or beneficially by such
Stockholder (i) in favor of the Scheme, the execution and delivery by BB of the
Merger Agreement and the approval of the terms thereof and each of the other
actions contemplated by the Merger Agreement, this Agreement and any actions
required in furtherance hereof and thereof; (ii) against any action or agreement
that would result in a breach of any covenant, representation or warranty or any
other obligation or agreement of BB under the Merger Agreement or this
Agreement; and (iii) against the following actions (other than the Scheme and
the transactions contemplated by the Merger Agreement): (1) any extraordinary
corporate transaction, such as a merger, consolidation, amalgamation or other
business combination involving BB or its subsidiaries; (2) a sale, lease or
transfer of a material amount of assets of BB or its subsidiaries or a
reorganization, recapitalization, dissolution or liquidation of BB or its
subsidiaries; (3) (a) any change in the majority of the Board of Directors of
BB; (b) any material change in the present capitalization of BB or any material
amendment of BB's certificate of incorporation and memorandum of association;
(c) any other material change in BB's corporate structure or business; or (d)
any other action which, is intended, or could reasonably be expected, to impede,
interfere with, delay, postpone, discourage or materially adversely affect the
Scheme or the transactions contemplated by the Merger Agreement or this
Agreement or the contemplated economic benefits of any of the foregoing. Each
Stockholder intends this proxy to be irrevocable and coupled with an interest
and will take such further action or execute such other instruments as may be
necessary to effectuate the intent of this proxy and hereby revokes any proxy
previously granted by it with respect to the Shares. Each Stockholder shall not
during the term of this Agreement purport to vote (or execute a consent with
respect to) such Shares (other than through this irrevocable proxy) or grant any
other proxy or power of attorney with respect to any Shares, deposit any Shares
into a voting trust or enter into any agreement (other than this Agreement),
arrangement or understanding with any person, directly or indirectly, to vote,
grant any proxy or give instructions with respect to the voting of such Shares.

   2.1  Representations and Warranties. VA hereby represents and warrants to
each Stockholder as follows:

     (a)  Due Authorization. The execution and delivery of this Agreement and
the consummation of the transactions contemplated hereby have been duly and
validly authorized by the Board of Directors of VA, and no other corporate
proceedings on the part of VA are necessary to authorize this Agreement or to
consummate the transactions contemplated hereby. This Agreement has been duly
and validly executed and delivered by VA and constitutes a valid and binding
agreement of VA enforceable against VA in accordance with its terms, except that
such enforceability (i) may be limited by bankruptcy, insolvency, moratorium or
other similar laws affecting or relating to enforcement of creditors' rights
generally and (ii) is subject to general principles of equity.

     (b)  No Conflicts. Except for (i) filings under the HSR Act, if applicable,
(ii) the applicable requirements of the Exchange Act, and the Securities Act of
1933, as amended (the "Securities Act"), (iii) the applicable requirements of
state securities, takeover or Blue Sky laws and (iv) such

                                       2
<PAGE>

notifications, filings, authorizing actions, orders and approvals as may be
required under other laws, (A) no filing with, and no permit, authorization,
consent or approval of, any state, federal or foreign public body or authority
is necessary for the execution of this Agreement by VA and the consummation by
each of the transactions contemplated hereby and (B) neither the execution and
delivery of this Agreement by VA nor the consummation by it of the transactions
contemplated hereby nor compliance by it with any of the provisions hereof shall
(1) conflict with or result in any breach of any provision of its certificate of
incorporation or by-laws (or similar documents), (2) result in a violation or
breach of, or constitute (with or without notice or lapse of time or both) a
default (or give rise to any third party right of termination, cancellation,
material modification or acceleration) under any of the terms, conditions or
provisions of any note, bond, mortgage, indenture, license, contract, agreement
or other instrument or obligation to which it is a party or by which it or any
of its properties or assets may be bound or (3) violate any order, writ,
injunction, decree, statute, rule or regulation applicable to it or any of its
properties or assets, except in the case of (2) or (3) for violations, breaches
or defaults which would not in the aggregate materially impair the ability of VA
to perform its obligations hereunder.

     (c)  Good Standing. VA is a corporation duly organized, validly existing
and in good standing under the laws of Commonwealth of Virginia and has all
requisite corporate power and authority to execute and deliver this Agreement.

     2.2.  Representations and Warranties of the Stockholders. Each Stockholder
hereby severally and not jointly represents and warrants to VA as follows:

     (a)  Ownership of Shares. Stockholder is the owner of the Shares set forth
next to such Stockholder's name on Exhibit A hereto (or, in the case of Marsh &
McLennan Capital Inc., is acting on behalf of the persons indicated on its
signature page who are the owners of certain of the Shares set forth next to
Marsh & McLennan Capital Inc. on Exhibit A hereto and, in the case of John J.
Byrne, is acting on behalf of certain entities with respect to which he has
voting and dispositive power who are the owners of certain of the Shares set
forth next to John J. Byrne on Exhibit A hereto) and has the power to vote and
dispose of such Shares.

     (b)  Power. Binding Agreement. Stockholder has the legal capacity, power
and authority to enter into and perform all of its obligations under this
Agreement. The execution, delivery and performance of this Agreement by
Stockholder will not violate any other agreement to which Stockholder is a party
including, without limitation, any voting agreement, stockholders agreement or
voting trust. This Agreement has been duly and validly authorized, executed and
delivered by Stockholder and constitutes a valid and binding agreement of
Stockholder, enforceable against Stockholder in accordance with its terms,
except that such enforceability (i) may be limited by bankruptcy, insolvency,
moratorium or other similar laws affecting or relating to enforcement of
creditors' rights generally and (ii) is subject to general principles of equity.

                                       3
<PAGE>

     (c)  No Conflicts. Except for (i) filings under the HSR Act, if applicable,
(ii) the applicable requirements of the Exchange Act and the Securities Act,
(iii) the applicable requirements of state securities, takeover or Blue Sky
laws, (iv) such notifications, filings, authorizing actions, orders and
approvals as may be required under other laws, (A) no filing by such Stockholder
with, and no permit, authorization, consent or approval of, any state, federal
or foreign public body or authority is necessary for the execution of this
Agreement by Stockholder and the consummation by Stockholder of the transactions
contemplated hereby and (B) neither the execution and delivery of this Agreement
by Stockholder nor the consummation by Stockholder of the transactions
contemplated hereby nor compliance by Stockholder with any of the provisions
hereof shall (1) conflict with or result in any breach of any provision of the
certificate of incorporation, by-laws, trust or charitable instruments (or
similar documents) of Stockholder, (2) result in a violation or breach of, or
constitute (with or without notice or lapse of time or both) a default (or give
rise to any third party right of termination, cancellation, material
modification or acceleration) under any of the terms, conditions or provisions
of any note, bond, mortgage, indenture, license, contract, agreement or other
instrument or obligation to which Stockholder is a party or by which he or it or
any of his or its properties or assets may be bound or (3) violate any order,
writ, injunction, decree, statute, rule or regulation applicable to Stockholder
or any of his or its properties or assets, except in the case of (A) or (B) for
violations, breaches or defaults which would not in the aggregate materially
adversely affect the ability of Stockholder to perform his or its obligations
hereunder.

     3.  Certain Covenants of Stockholder. Each Stockholder hereby severally,
and not jointly, covenants and agrees as follows:

     (a)  No Solicitation. During the term of this Agreement, neither
Stockholder nor any officer, director, employee, representative or agent of
Stockholder shall, directly or indirectly, solicit, facilitate, participate in
or initiate any inquiries or the making of any proposal by any person or entity
(other than VA) which constitutes, or may reasonably be expected to lead to any
sale of the Shares or any Acquisition Proposal. If Stockholder, or any officer,
director, employee, representative or agent of Stockholder, receives an inquiry
or proposal with respect to the sale of Shares, then Stockholder shall promptly
inform VA of the terms and conditions, if any, of such inquiry or proposal and
the identity of the person making it. Stockholder shall, and shall cause its
officers, directors, employees, representatives and agents to, immediately cease
and cause to be terminated any existing activities, discussions or negotiations
with any parties conducted heretofore with respect to any of the foregoing. The
foregoing provisions of this Section 3(a) shall not be construed to limit
actions taken, or require actions to be taken, by any Stockholder who is a
director of BB that are required or restricted by his or her director's
fiduciary duties or permitted by Section 5.3 of the Merger Agreement and that
are undertaken solely in such person's capacity as a director of BB.

     (b)  Restriction on Transfer, Proxies and NonInterference. Stockholder
hereby agrees, while this Agreement is in effect, and except as contemplated
hereby, not to (a) sell, transfer, pledge, encumber, assign or otherwise dispose
of, or enter into any contract, option or other arrangement or

                                       4
<PAGE>

understanding with respect to the sale, transfer, pledge, encumbrance,
assignment or other disposition of, any of the Shares or (b) grant any proxies,
deposit any Shares into a voting trust or enter into a voting agreement with
respect to any Shares or (c) take any action that would make any representation
or warranty of such Stockholder contained herein untrue or incorrect or have the
effect of preventing or disabling such Stockholder from performing his or its
obligations under this Agreement.

     4.  Further Assurances. From time to time, at the other party's request and
without further consideration, each party hereto shall execute and deliver such
additional documents and take all such further action as may be necessary or
desirable to effectuate the transactions contemplated by this Agreement.

     5.  Adjustments to Prevent Dilution, etc. In the event of a stock dividend
or distribution, or any change in BB's capital stock by reason of any stock
dividend, split-up, reclassification, recapitalization, combination or the
exchange of shares, the term "Shares" shall be deemed to refer to and include
the Shares as well as all such stock dividends and distributions and any shares
into which or for which any or all of the Shares may be changed or exchanged.

     6.  Miscellaneous.

     (a)  Entire Agreement, Assignment. This Agreement, together with the Merger
Agreement and that certain Registration Rights Agreement dated the date hereof,
(i) constitutes the entire agreement among the parties with respect to the
subject matter hereof and supersedes all other prior agreements and
understandings, both written and oral, between the parties with respect to the
subject matter hereof and (ii) shall not be assigned by operation of law or
otherwise, provided that VA may assign its rights and obligations hereunder to
any direct or indirect wholly owned parent company or subsidiary of VA, but no
such assignment shall relieve VA of its obligations hereunder if such assignee
does not perform such obligations.

     (b)  Amendments. This Agreement may not be modified, amended, altered or
supplemented, except upon the execution and delivery of a written agreement
executed by the applicable Stockholder and VA.

     (c)  Notices. All notices, requests, claims, demands and other
communications hereunder shall be in writing and shall be given (and shall be
deemed to have been duly received if so given) by hand delivery, telegram, telex
or telecopy, or by mail (registered or certified mail, postage prepaid, return
receipt requested) or by any courier service, such as Federal Express, providing
proof of delivery. All communications hereunder shall be delivered to the
respective parties at the following addresses:

     If to a Stockholder, to the address of such Stockholder indicated on
Exhibit A hereto.

                                       5
<PAGE>

     If to VA:

               Markel Corporation
               4551 Cox Road
               Glen Allen, Virginia 23059
               Attn: Steven A. Markel
               Facsimile No.: 804-527-3810

               with a copy to:

               McGuire, Woods, Battle & Boothe LLP
               One James Center
               901 E. Cary Street
               Richmond, Virginia 23219
               Attention: Leslie A. Grandis, Esq.
               Facsimile No.: 804-775-1061

or to such other address as the person to whom notice is given may have
previously furnished to the others in writing in the manner set forth above.

     (d)  Governing Law. Except to the extent that the BCA applies with respect
to issues of corporate mechanics because BB is a Bermuda corporation, this
Agreement shall be governed in all respects by the laws of the State of New York
without regard to any laws or regulations relating to choice of laws (whether of
the State of New York or any other jurisdiction) that would cause the
application of the laws of any jurisdiction other than the State of New York.

     (e)  Cooperation as to Regulatory Matters. If so requested by VA, promptly
after the date hereof, Stockholder will use its reasonable commercial efforts to
cause it and BB (if required) to make all filings which are required under the
HSR Act and applicable requirements and to seek all regulatory approvals
required in connection with the transactions contemplated hereby.

     (f)  Termination. This Agreement shall terminate on the earlier of (i) the
Effective Time or (ii) the termination of the Merger Agreement in accordance
with its terms.

     (g)  Specific Performance. Each of the parties hereto recognizes and
acknowledges that a breach by it of any covenants or agreements contained in
this Agreement will cause the other party to sustain damages for which it would
not have an adequate remedy at law for money damages, and therefore, each of the
parties hereto agrees that in the event of any such breach the aggrieved party
shall be entitled to the remedy of specific performance of such covenants and
agreements and injunctive and other equitable relief in addition to any other
remedy to which it may be entitled, at law or in equity.

                                       6
<PAGE>

     (h)  Counterparts. This Agreement may be executed in one or more
counterparts, each of which shall be deemed to be an original, but all of which
shall constitute one and the same Agreement.

     (i)  Descriptive Headings. The descriptive headings used herein are
inserted for convenience of reference only and are not intended to be part of or
to affect the meaning or interpretation of this Agreement.

     (j)  Severability. 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.

     (k)  Special Exception. Anything in this Agreement to the contrary
notwithstanding, it is understood that the covenants and restrictions of this
Agreement shall not apply to any shares of Class A Stock or Class B Stock (i)
owned by Donaldson, Lufkin & Jenrette Securities Corporation, other than those
shares listed on Exhibit A hereto or (ii) owned or controlled by John J. Byrne,
other than those shares listed on Exhibit A hereto or (iii) owned or controlled
by Putnam Investments or any fund managed by Putnam Investments.

                                       7
<PAGE>

     IN WITNESS WHEREOF, this Agreement has been executed by or on behalf of
each of the parties hereto, all as of the date first above written.

                              MARKEL CORPORATION


                              By: /s/ Steven A. Markel
                                 --------------------------------

                              Title: Vice Chairman
                                    -----------------------------


                              TERRA NOVA  (BERMUDA) HOLDINGS LTD.


                              By: /s/ John J. Dwyer
                                 --------------------------------

                              Title: Chairman
                                    -----------------------------
<PAGE>

STOCKHOLDERS:

                              DLJ INTERNATIONAL PARTNERS, C.V.
                              By: DLJ MERCHANT BANKING, INC.
                                    Advisory General Partner

                              By: /s/ David Jaffe
                                 ---------------------------------------------
                                  Name:  David Jaffe
                                  Title: Managing Director

                              DLJ OFFSHORE PARTNERS, C.V.
                              By: DLJ MERCHANT BANKING, INC.
                                    Advisory General Partner

                              By: /s/ David Jaffe
                                 ---------------------------------------------
                                  Name:  David Jaffe
                                  Title: Managing Director


                              DLJMB OVERSEAS PARTNERS, C.V.
                              By: DLJ MERCHANT BANKING, INC.
                                    Advisory General Partner


                              By:   /s/ David Jaffe
                                  ---------------------------------------------
                                  Name:  David Jaffe
                                  Title: Managing Director

                              DLJ MERCHANT BANKING FUNDING, INC.


                              By: /s/ Ivy Dodes
                                 ---------------------------------------------
                                  Name:  Ivy Dodes
                                  Title: Vice President
<PAGE>

                              DLJ FIRST ESC, L.P.
                              By:  DLJ LBO PLANS MANAGEMENT CORPORATION,
                                   its General Partner


                              By:   /s/ Ivy Dodes
                                  ---------------------------------------------
                                  Name:  Ivy Dodes
                                  Title: Vice President


                              DONALDSON, LUFKIN & JENRETTE SECURITIES CORP.


                              By: /s/ Ivy Dodes
                                 ---------------------------------------------
                                  Name:  Ivy Dodes
                                  Title: Vice President
<PAGE>

                              MARSH & MCLENNAN CAPITAL INC.,
                              on behalf of itself, MARSH & MCLENNAN CAPITAL
                              HOLDINGS, LTD., RISK CAPITAL REINSURANCE COMPANY
                              and other MARSH &  MCLENNAN RELATED ENTITIES


                              By: /s/ Philip Petronis
                                 ---------------------------------------------
                                  Name: Philip Petronis
                                  Title:
<PAGE>

                              JOHN J. BYRNE on his own behalf and on behalf of
                              certain entities as to which, with respect to
                              Shares held by such entities, he has voting and
                              dispositive power


                              By: /s/ John J. Byrne
                                 ---------------------------------------------
                                  Name: John J. Byrne
<PAGE>

EXHIBIT A

<TABLE>
<CAPTION>
                                                Number of         Number of
Stockholder Name                                Class A Shares    Class B Shares
- ----------------                                --------------    --------------
<S>                                             <C>               <C>
DLJ International Partners, C.V.                  967,499            71,682

DLJ Offshore Partners, C.V.                        36,797            23,456

DLJMB Overseas Partners, C.V.                   1,121,517         1,061,828

DLJ Merchant Banking Funding, Inc.                567,905           362,085

DLJ First ESC, L.P.                               352,816           224,862

Donaldson, Lufkin & Jenrette Securities Corp.      82,048            52,304

     Address of all above:
     277 Park Avenue
     New York, NY 10172
     Fax (212) 892-7552

     Marsh & McLennan Capital Inc. on behalf of
     itself and the other persons listed on its
     signature page above.                      2,964,610*

     20 Horseneck Lane
     Greenwich, Conn. 06830
     Fax (203) 862-2951
     Attn: Michael Goldman

     John J. Byrne                                483,625
</TABLE>
- ----------
*  Of the 2,964,610 Class A shares listed above, 1,214,414 are held by Bank of
NT Butterfield & Son Limited (the "Bank"), as to which Marsh has certain
depository receipts and the right to request the sale or transfer of such
1,214,414 Class A Shares under certain circumstances, all as set forth in the
proxy statement of BB dated March 30, 1999.  The parties acknowledge that (i)
Marsh's obligations hereunder with respect to such 1,214,414 Class A shares are
limited to the extent inconsistent with such arrangement between Marsh and the
Bank as set forth in such proxy statement, and (ii) (for clarification purposes
only) any Common Shares received in connection with the Merger or Scheme in
exchange for such 1,214,414 shares shall be deemed to be owned by Marsh for
purposes of the Registration Rights Agreement dated as of the date here amount
certain of the party's hereto.  Subject to applicable laws, Marsh agrees to use
its commercially reasonable efforts to cause such 1,214,414 shares to be voted
in accordance with section 1 of the Stockholders Agreement.


<PAGE>

                                                                  Exhibit 99.3
                                                                  CONFORMED COPY

                            STOCKHOLDERS AGREEMENT

   STOCKHOLDERS AGREEMENT (this "Agreement") dated as of August 15, 1999, by and
among Markel Corporation, a Virginia corporation ("VA"), Terra Nova (Bermuda)
Holdings Ltd., a Bermuda corporation ("BB"), and the other parties signatory
hereto (each a "Stockholder" and together, the "Stockholders").

                                   RECITALS

   A.  Simultaneously herewith VA and BB are entering into an Agreement and Plan
of Merger and Scheme of Arrangement between VA and BB dated as of August 15,
1999 (the "Merger Agreement").

   B.  The Merger Agreement provides for (i) the merger (the "Merger") of Mint
Sub Ltd., a corporation to be organized under the laws of Virginia as a wholly-
owned subsidiary of Virginia Holdings Inc. ("Mint"), a corporation to be
organized under the laws of Virginia, with and into VA and (ii) a Scheme of
Arrangement between BB and certain of its shareholders (the "Scheme"). Pursuant
to the Merger and the Scheme, the holders of the outstanding capital stock of BB
and VA, respectively, will receive the applicable consideration set forth in the
Merger Agreement. Upon consummation of the Merger and the Scheme, BB will be a
wholly owned subsidiary of Mint, which will change its name to Markel
Corporation.

   C.  Each Stockholder owns that number of VA's common shares, no par value
(the "Common Shares") set forth next to such Stockholder's name on Exhibit A
hereto.

   D.  As a condition to its willingness to enter into the Merger Agreement, BB
has required that each Stockholder agree, and each Stockholder has agreed, among
other things, to execute and deliver this Agreement with respect to the Common
Shares now owned or in the future acquired by such Stockholder (all such shares,
including those now owned and those acquired in the future being referred to
herein as the "Shares"), on the terms and conditions provided for herein.

   E.  Capitalized terms used but not defined herein shall have the meanings set
forth in the Merger Agreement.

   NOW, THEREFORE, in consideration of the foregoing and the representations,
warranties and agreements herein contained, the parties hereto agree as follows:
<PAGE>

   1.  Irrevocable Proxy. Each Stockholder hereby irrevocably appoints BB or any
designee of BB the lawful agent, attorney and proxy of such Stockholder, during
the term of this Agreement at any meeting of the Stockholders of VA, however
called, or in connection with any written consent of the Stockholders of VA, to
vote (or cause to be voted) the Shares held of record or beneficially by such
Stockholder (i) in favor of the Scheme, the execution and delivery by VA of the
Merger Agreement and the approval of the terms thereof and each of the other
actions contemplated by the Merger Agreement, this Agreement and any actions
required in furtherance hereof and thereof; (ii) against any action or agreement
that would result in a breach of any covenant, representation or warranty or any
other obligation or agreement of VA under the Merger Agreement or this
Agreement; and (iii) against the following actions (other than the Scheme and
the transactions contemplated by the Merger Agreement): (1) any extraordinary
corporate transaction, such as a merger, consolidation, amalgamation or other
business combination involving VA or its subsidiaries; (2) a sale, lease or
transfer of a material amount of assets of VA or its subsidiaries or a
reorganization, recapitalization, dissolution or liquidation of VA or its
subsidiaries; (3) (a) any change in the majority of the Board of Directors of
VA; (b) any material change in the present capitalization of VA or any material
amendment of VA's certificate of incorporation and memorandum of association;
(c) any other material change in VA's corporate structure or business; or (d)
any other action which, is intended, or could reasonably be expected, to impede,
interfere with, delay, postpone, discourage or materially adversely affect the
Scheme or the transactions contemplated by the Merger Agreement or this
Agreement or the contemplated economic benefits of any of the foregoing. Each
Stockholder intends this proxy to be irrevocable and coupled with an interest
and will take such further action or execute such other instruments as may be
necessary to effectuate the intent of this proxy and hereby revokes any proxy
previously granted by it with respect to the Shares. Each Stockholder shall not
during the term of this Agreement purport to vote (or execute a consent with
respect to) such Shares (other than through this irrevocable proxy) or grant any
other proxy or power of attorney with respect to any Shares, deposit any Shares
into a voting trust or enter into any agreement (other than this Agreement),
arrangement or understanding with any person, directly or indirectly, to vote,
grant any proxy or give instructions with respect to the voting of such Shares.

   2.1 Representations and Warranties. BB hereby represents and warrants to
each Stockholder as follows:

     (a)  Due Authorization. The execution and delivery of this Agreement and
the consummation of the transactions contemplated hereby have been duly and
validly authorized by the Board of Directors of BB, and no other corporate
proceedings on the part of BB are necessary to authorize this Agreement or to
consummate the transactions contemplated hereby. This Agreement has been duly
and validly executed and delivered by BB and constitutes a valid and binding
agreement of BB enforceable against BB in accordance with its terms, except that
such enforceability (i) may be limited by bankruptcy, insolvency, moratorium or
other similar laws affecting or relating to enforcement of creditors' rights
generally and (ii) is subject to general principles of equity.

     (b)  No Conflicts. Except for (i) filings under the HSR Act, if applicable,
(ii) the applicable requirements of the Exchange Act, and the Securities Act of
1933, as amended (the "Securities Act"), (iii) the applicable requirements of
state securities, takeover or Blue Sky laws and (iv) such

                                       2
<PAGE>

notifications, filings, authorizing actions, orders and approvals as may be
required under other laws, (A) no filing with, and no permit, authorization,
consent or approval of, any state, federal or foreign public body or authority
is necessary for the execution of this Agreement by BB and the consummation by
each of the transactions contemplated hereby and (B) neither the execution and
delivery of this Agreement by BB nor the consummation by it of the transactions
contemplated hereby nor compliance by it with any of the provisions hereof shall
(1) conflict with or result in any breach of any provision of its certificate of
incorporation or by-laws (or similar documents), (2) result in a violation or
breach of, or constitute (with or without notice or lapse of time or both) a
default (or give rise to any third party right of termination, cancellation,
material modification or acceleration) under any of the terms, conditions or
provisions of any note, bond, mortgage, indenture, license, contract, agreement
or other instrument or obligation to which it is a party or by which it or any
of its properties or assets may be bound or (3) violate any order, writ,
injunction, decree, statute, rule or regulation applicable to it or any of its
properties or assets, except in the case of (2) or (3) for violations, breaches
or defaults which would not in the aggregate materially impair the ability of BB
to perform its obligations hereunder.

     (c) Good Standing. BB is a corporation duly organized, validly existing
and in good standing under the laws of Bermuda and has all requisite corporate
power and authority to execute and deliver this Agreement.

     2.2. Representations and Warranties of the Stockholders. Each Stockholder
hereby severally and not jointly represents and warrants to BB as follows:

     (a) Ownership of Shares. Stockholder is the owner of the Shares set forth
next to such Stockholder's name on Exhibit A hereto and has the power to vote
and dispose of such Shares.

     (b) Power. Binding Agreement. Stockholder has the legal capacity, power
and authority to enter into and perform all of its obligations under this
Agreement. The execution, delivery and performance of this Agreement by
Stockholder will not violate any other agreement to which Stockholder is a party
including, without limitation, any voting agreement, stockholders agreement or
voting trust. This Agreement has been duly and validly authorized, executed and
delivered by Stockholder and constitutes a valid and binding agreement of
Stockholder, enforceable against Stockholder in accordance with its terms,
except that such enforceability (i) may be limited by bankruptcy, insolvency,
moratorium or other similar laws affecting or relating to enforcement of
creditors' rights generally and (ii) is subject to general principles of equity.

     (c) No Conflicts. Except for (i) filings under the HSR Act, if applicable,
(ii) the applicable requirements of the Exchange Act and the Securities Act,
(iii) the applicable requirements of state securities, takeover or Blue Sky
laws, (iv) such notifications, filings, authorizing actions, orders and
approvals as may be required under other laws, (A) no filing by such Stockholder
with, and no permit, authorization, consent or approval of, any state, federal
or foreign public body or authority is

                                       3
<PAGE>

necessary for the execution of this Agreement by Stockholder and the
consummation by Stockholder of the transactions contemplated hereby and (B)
neither the execution and delivery of this Agreement by Stockholder nor the
consummation by Stockholder of the transactions contemplated hereby nor
compliance by Stockholder with any of the provisions hereof shall (1) conflict
with or result in any breach of any provision of the certificate of
incorporation, by-laws, trust or charitable instruments (or similar documents)
of Stockholder, (2) result in a violation or breach of, or constitute (with or
without notice or lapse of time or both) a default (or give rise to any third
party right of termination, cancellation, material modification or acceleration)
under any of the terms, conditions or provisions of any note, bond, mortgage,
indenture, license, contract, agreement or other instrument or obligation to
which Stockholder is a party or by which he or it or any of his or its
properties or assets may be bound or (3) violate any order, writ, injunction,
decree, statute, rule or regulation applicable to Stockholder or any of his or
its properties or assets, except in the case of (A) or (B) for violations,
breaches or defaults which would not in the aggregate materially adversely
affect the ability of Stockholder to perform his or its obligations hereunder.

     3.   Certain Covenants of Stockholder. Each Stockholder hereby severally,
and not jointly, covenants and agrees as follows:

     (a) No Solicitation. During the term of this Agreement, neither
Stockholder nor any officer, director, employee, representative or agent of
Stockholder shall, directly or indirectly, solicit, facilitate, participate in
or initiate any inquiries or the making of any proposal by any person or entity
(other than BB) which constitutes, or may reasonably be expected to lead to any
sale of the Shares or any Acquisition Proposal. If Stockholder, or any officer,
director, employee, representative or agent of Stockholder, receives an inquiry
or proposal with respect to the sale of Shares, then Stockholder shall promptly
inform BB of the terms and conditions, if any, of such inquiry or proposal and
the identity of the person making it. Stockholder shall, and shall cause its
officers, directors, employees, representatives and agents to, immediately cease
and cause to be terminated any existing activities, discussions or negotiations
with any parties conducted heretofore with respect to any of the foregoing. The
foregoing provisions of this Section 3(a) shall not be construed to limit
actions taken, or require actions to be taken, by any Stockholder who is a
director of VA that are required or restricted by his or her director's
fiduciary duties and that are undertaken solely in such person's capacity as a
director of VA.

     (b) Restriction on Transfer, Proxies and NonInterference. Stockholder
hereby agrees, while this Agreement is in effect, and except as contemplated
hereby, not to (a) sell, transfer, pledge, encumber, assign or otherwise dispose
of, or enter into any contract, option or other arrangement or understanding
with respect to the sale, transfer, pledge, encumbrance, assignment or other
disposition of, any of the Shares or (b) grant any proxies, deposit any Shares
into a voting trust or enter into a voting agreement with respect to any Shares
or (c) take any action that would make any representation or warranty of such
Stockholder contained herein untrue or incorrect or have the effect

                                       4
<PAGE>

of preventing or disabling such Stockholder from performing his or its
obligations under this Agreement.

     (c)  Legending of Certificates: Nominees-Shares. If requested by BB,
Stockholder agrees to submit to BB contemporaneously with or promptly following
execution of this Agreement all certificates representing the Shares so that BB
may note thereon a legend referring to the proxy and other rights granted to it
by this Agreement. If any of the Shares beneficially owned by Stockholder are
held of record by a brokerage firm in "street name" or in the name of any other
nominee (a "Nominee", and, as to such Shares, "Nominee Shares"), Stockholder
agrees that, upon written notice by BB requesting it, Stockholder will within
five days of the giving of such notice execute and deliver to BB a limited power
of attorney in such form as shall be reasonably satisfactory to BB enabling BB
to require the Nominee to (i) grant to BB an irrevocable proxy to the same
effect as Section 1 hereof with respect to the Nominee Shares held by such
Nominee, and (ii) submit to BB the certificates representing such Nominee Shares
for notation of the above-referenced legend thereon.

     (d)  Stop Transfer Order. In furtherance of this Agreement, concurrently
herewith, Stockholder shall and hereby does authorize VA's counsel to notify
VA's transfer agent that there is a stop transfer order with respect to all of
the Shares (and that this Agreement places limits on the voting and transfer of
such shares), provided that Shares may be transferred to Nominees upon notice to
              --------
BB of the transfer thereof.

     4.  Further Assurances. From time to time, at the other party's request and
without further consideration, each party hereto shall execute and deliver such
additional documents and take all such further action as may be necessary or
desirable to effectuate the transactions contemplated by this Agreement.

     5.  Adjustments to Prevent Dilution, etc. In the event of a stock dividend
or distribution, or any change in VA's capital stock by reason of any stock
dividend, split-up, reclassification, recapitalization, combination or the
exchange of shares, the term "Shares" shall be deemed to refer to and include
the Shares as well as all such stock dividends and distributions and any shares
into which or for which any or all of the Shares may be changed or exchanged.

     6.  Miscellaneous.

     (a)  Entire Agreement, Assignment. This Agreement (i) constitutes the
entire agreement among the parties with respect to the subject matter hereof and
supersedes all other prior agreements and understandings, both written and oral,
between the parties with respect to the subject matter hereof and (ii) shall not
be assigned by operation of law or otherwise, provided that BB may assign its
rights and obligations hereunder to any direct or indirect wholly owned parent
company or subsidiary of BB, but no such assignment shall relieve BB of its
obligations hereunder if such assignee does not perform such obligations.

                                       5
<PAGE>

     (b)  Amendments. This Agreement may not be modified, amended, altered or
supplemented, except upon the execution and delivery of a written agreement
executed by the applicable Stockholder and BB.

     (c)  Notices. All notices, requests, claims, demands and other
communications hereunder shall be in writing and shall be given (and shall be
deemed to have been duly received if so given) by hand delivery, telegram, telex
or telecopy, or by mail (registered or certified mail, postage prepaid, return
receipt requested) or by any courier service, such as Federal Express, providing
proof of delivery. All communications hereunder shall be delivered to the
respective parties at the following addresses:

     If to a Stockholder, to the address of such Stockholder indicated on
Exhibit A hereto.

     If to BB:

               Terra Nova (Bermuda) Holdings Ltd.
               Richmond House
               2nd Floor
               12 Par-la-ville Road
               Hamilton HM 8, Bermuda
               Facsimile No.: (44-1) 296-6645
               Attention: John J. Dwyer and
                          Jean M. Waggett, Esq.

               with a copy to:

               Debevoise & Plimpton
               875 Third Avenue
               23rd Floor
               New York, New York 10022
               Attention: Edward A. Perell, Esq.
               Facsimile No.: (212) 909-6836

or to such other address as the person to whom notice is given may have
previously furnished to the others in writing in the manner set forth above.

     (d)  Governing Law. Except to the extent that the VSCA applies because VA
is a Virginia corporation, this Agreement shall be governed in all respects by
the laws of the State of New York without regard to any laws or regulations
relating to choice of laws (whether of the State of New York or any other
jurisdiction) that would cause the application of the laws of any jurisdiction
other than the State of New York.

                                       6
<PAGE>

     (e)  Cooperation as to Regulatory Matters. If so requested by BB, promptly
after the date hereof, Stockholder will use its reasonable best efforts to cause
such Stockholder and VA (if required) to make all filings which are required
under the HSR Act and applicable requirements and to seek all regulatory
approvals required in connection with the transactions contemplated hereby.

     (f)  Termination. This Agreement shall terminate on the earlier of (i) the
Effective Time or (ii) the termination of the Merger Agreement in accordance
with its terms.

     (g)  Specific Performance. Each of the parties hereto recognizes and
acknowledges that a breach by it of any covenants or agreements contained in
this Agreement will cause the other party to sustain damages for which it would
not have an adequate remedy at law for money damages, and therefore, each of the
parties hereto agrees that in the event of any such breach the aggrieved party
shall be entitled to the remedy of specific performance of such covenants and
agreements and injunctive and other equitable relief in addition to any other
remedy to which it may be entitled, at law or in equity.

     (h)  Counterparts. This Agreement may be executed in one or more
counterparts, each of which shall be deemed to be an original, but all of which
shall constitute one and the same Agreement.

     (i)  Descriptive Headings. The descriptive headings used herein are
inserted for convenience of reference only and are not intended to be part of or
to affect the meaning or interpretation of this Agreement.

     (j)  Severability. 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.

                                       7
<PAGE>

     IN WITNESS WHEREOF, this Agreement has been executed by or on behalf of
each of the parties hereto, all as of the date first above written.

                              MARKEL CORPORATION


                              By: /s/  Steven A. Markel
                                 --------------------------------

                              Title: Vice President
                                 --------------------------------

                              TERRA NOVA  (BERMUDA) HOLDINGS LTD.


                              By: /s/  John J. Dwyer
                                 --------------------------------
                              Title: Chairman
                                    -----------------------------
<PAGE>

STOCKHOLDERS:

                              STEVEN A.  MARKEL


                              By: /s/ Steven A. Markel
                                 --------------------------------
                                  Name: Steven A. Markel
                                  Title: Stockholder

                              ANTHONY F. MARKEL


                              By: /s/ Anthony F. Markel
                                 --------------------------------
                                  Name: Anthony F. Markel
                                  Title: Stockholder

                              ALAN I. KIRSHNER


                              By: /s/ Alan I. Kirshner
                                 --------------------------------
                                  Name: Alan I. Kirshner
                                  Title: Stockholder
<PAGE>

EXHIBIT A

<TABLE>
<CAPTION>
Stockholder Name                          Number of Shares
- ----------------                          ----------------
<S>                                       <C>
Steven A. Markel                               470,361

Anthony F. Markel                              341,763

Alan I. Kirshner                               102,302
</TABLE>

                                       3

<PAGE>

                                                                    Exhibit 99.4
                                                                  CONFORMED COPY

                          REGISTRATION RIGHTS AGREEMENT

                                      AMONG

                               MARKEL CORPORATION

                                       AND

                        DLJ INTERNATIONAL PARTNERS, C.V.
                           DLJ OFFSHORE PARTNERS, C.V.
                          DLJMB OVERSEAS PARTNERS, C.V.
                       DLJ MERCHANT BANKING FUNDING, INC.
                               DLJ FIRST ESC, L.P.
               DONALDSON, LUFKIN & JENRETTE SECURITIES CORPORATION

                                       AND

                         MARSH & MCLENNAN CAPITAL, INC.

                                       AND

                                  JOHN J. BYRNE

                           Dated as of August 15, 1999
<PAGE>

                                TABLE OF CONTENTS

                                                                      PAGE
                                                                      ----
SECTION 1. Definitions...................................................2
SECTION 2. Registration under Securities Act.............................4
SECTION 3. Other Registration Rights....................................16
SECTION 4. Markel Guarantee.............................................16
SECTION 5. Amendments and Waivers.......................................16
SECTION 6. Notices......................................................17
SECTION 7. Binding Agreement............................................17
SECTION 8. Descriptive Headings.........................................18
SECTION 9. Specific Performance.........................................18
SECTION 10. Effectiveness...............................................18
SECTION 11. Termination.................................................18
SECTION 12. Governing Law...............................................18
SECTION 13. Counterparts................................................18
SECTION 14. Entire Agreement............................................19



<PAGE>

                         REGISTRATION RIGHTS AGREEMENT

     This REGISTRATION RIGHTS AGREEMENT is made as of August 15, 1999, by and
among MARKEL CORPORATION, a Virginia corporation ("Markel"), DLJ INTERNATIONAL
PARTNERS, C.V., a Netherlands Antilles limited partnership, DLJ OFFSHORE
PARTNERS, C.V., a Netherlands Antilles limited partnership, DLJMB OVERSEAS
PARTNERS, C.V., a Netherlands Antilles limited partnership, DLJ MERCHANT BANKING
FUNDING, INC., a Delaware corporation, DLJ FIRST ESC, L.P., a Delaware limited
partnership and DONALDSON, LUFKIN & JENRETTE SECURITIES CORPORATION, a Delaware
corporation (collectively, the "DLJ Entities"), MARSH & MCLENNAN CAPITAL. INC.,
a Delaware corporation, on behalf of itself and/or MARSH & MCLENNAN RISK CAPITAL
HOLDINGS, LTD., a Delaware corporation, other related Marsh & McLennan Capital,
Inc. entities and/or RISK CAPITAL REINSURANCE COMPANY, a Nebraska domiciled
insurance company (collectively, "Marsh") and JOHN J. BYRNE, on his own behalf
and on behalf of certain entities as to which, with respect to Common Shares
held by such entities, he has voting and dispositive power ("Byrne").


     A.    Simultaneously herewith, Markel and Terra Nova (Bermuda) Holdings
Ltd., a Bermuda corporation ("TNA"), entered into an Agreement and Plan of
Merger and Scheme of Arrangement (the "Merger Agreement").

     B.    The Merger Agreement provides for (i) the merger (the "Merger") of
Mint Sub Ltd., a corporation to be organized under the laws of Virginia and a
wholly-owned subsidiary of Virginia Holdings Inc., a corporation to be organized
under the laws of Virginia (the "Company"), with and into Markel and (ii) a
Scheme of Arrangement between TNA and certain of its shareholders (the
"Scheme"). Pursuant to the Merger Agreement, the holders of the outstanding
stock of TNA will be entitled to receive the applicable consideration set forth
in the Merger Agreement. Holders of the outstanding stock of TNA who elect to
receive Common Stock Consideration (as defined in the Merger Agreement) in the
Merger will receive ordinary shares of the Company, no par value (the "Common
Shares"), and will become shareholders of the Company. Upon consummation of the
Merger and the Scheme, TNA and Markel will be wholly-owned subsidiaries of the
Company, which, at such time, will change its name to Markel Corporation.

     C.    TNA and the DLJ Entities are parties to that certain Registration
Rights Agreement dated as of March 25, 1996, among TNA and certain of its
stockholders, pursuant to which such stockholders were accorded certain

<PAGE>

registration rights with respect to the ordinary shares of TNA held by them (the
"TNA Registration Rights Agreement").

     In consideration of the parties entering into the agreements and carrying
out the transactions herein described, and for other good and valuable
consideration, the parties agree as follows:

     SECTION 1. Definitions. As used herein, unless the context otherwise
requires, the following terms have the following respective meanings:

     "Affiliate" means, with respect to any Person, any other Person directly or
indirectly controlling, controlled by, or under common control with such Person;
provided that no stockholder of the Company shall be deemed an Affiliate of any
other stockholder of the Company solely by reason of any investment in the
Company. For the purpose of this definition, the term "control" (including with
correlative meanings, the terms "controlling", "controlled by" and "under common
control with"), when used with respect to any Person, means the possession,
directly or indirectly, of the power to direct or cause the direction of the
management and policies of such Person, whether through the ownership of voting
securities, by contract or otherwise.

     "Board" means the Board of Directors of the Company.

     "Commission"  means the  Securities  and Exchange  Commission  or any other
United States agency at the time administering the Securities Act.

     "Exchange Act" means the Securities Exchange Act of 1934, or any similar
United States statute, and the rules and regulations of the Commission
thereunder, all as the same shall be in effect at the time.

     "Person" means an individual, a partnership, a joint venture, a
corporation, a limited liability company, a trust, an unincorporated
organization and a government or any department or agency thereof.

     "Permitted Transferee" means, in the case of any DLJ Entity, (A) any other
DLJ Entity, (B) any general or limited partner of any DLJ Entity (a "DLJ
Partner"), and any corporation, partnership, Affiliated Employee Benefit Trust
or other entity that is an Affiliate of any DLJ Partner (collectively, the "DLJ
Affiliates"), (C) any managing director, general partner, director, limited
partner, officer or employee of Donaldson, Lufkin & Jenrette, Inc. or any entity
controlled by Donaldson, Lufkin & Jenrette, Inc., or the heirs, executors,
administrators, testamentary trustees, legatees or beneficiaries of any of the
foregoing persons referred to in this clause (C) (collectively, "DLJ
Associates"), (D) a trust, the

                                   2
<PAGE>

beneficiaries of which, or a corporation, limited liability company or
partnership, the stockholders, members or general or limited partners of which,
include only DLJ Entities, DLJ Affiliates, DLJ Associates, their spouses or
their lineal descendants or (E) a voting trustee for one or more DLJ Entities,
DLJ Affiliates or DLJ Associates under the terms of a voting trust designated to
conform with the requirements of the Insurance Law of the State of New York.

     "Registrable Securities" means (i) any outstanding Common Shares held by
any Stockholder as of the effective date of this Agreement and (ii) any
securities issued with respect to any such Common Shares by way of stock
dividend or stock split. As to any particular Registrable Securities, such
securities shall cease to be Registrable Securities (i) when a registration
statement with respect to the sale of such securities shall have become
effective under the Securities Act and such securities shall have been
distributed in accordance with such registration statement, (ii) when such
securities have been distributed to the public pursuant to Rule 144 (or any
successor provision) under the Securities Act, (iii) when such securities shall
have been otherwise transferred, except as contemplated by Section 7 of this
Agreement, or (iv) when such securities shall have ceased to be outstanding.

     "Registration Expenses" means (i) all registration, filing and NASD fees,
(ii) fees and expenses of complying with securities or blue sky laws (including
reasonable fees and disbursements of counsel in connection with blue sky
qualifications of the shares covered by such registration), (iii) printing
expenses, (iv) internal expenses of the Company (including all salaries and
expenses of its officers and employees performing legal and accounting duties),
(v) reasonable fees and disbursements of counsel for the Company and of its
independent certified public accountants, including the expenses relating to
"cold comfort" letters requested pursuant thereto, (vi) not more than $25,000 of
reasonable fees and disbursements of one counsel for the Stockholders in
connection with their participation in any offering, (vii) the reasonable fees
and expenses of special experts retained by the Company in connection with such
registration, premiums and other costs of policies of insurance against
liabilities arising out of the public offering of the Registrable Securities
being registered (if the Company elects to obtain any such insurance), and
(viii) any fees and disbursements of underwriters customarily paid by issuers
or sellers of securities, but excluding underwriting discounts and commissions
and transfer taxes, if any, and the fees and expenses of counsel for the
underwriters.

     "Requesting Holder" means, in respect of any registration pursuant to
Section 2 hereof, any holder of Registrable Securities who gives notice to the
Company of its request to include Registrable Securities in such registration.


                                        3
<PAGE>

     "Rule 144" means Rule 144 promulgated by the Commission under the
Securities Act as such rule may be amended from time to time, or any similar
rule then in force.

     "Securities Act" means the Securities Act of 1933, or any similar United
States statute, and the rules and regulations of the Commission thereunder, all
as the same shall be in effect at the time.

     "Stockholders" means any of the DLJ Entities, Byrne or Marsh, acting on
behalf of itself, other related Marsh & McLennan Capital, Inc. entities and/or
Marsh & McLennan Risk Capital Holdings, Ltd. and/or Risk Capital Reinsurance
Company.

     SECTION 2. Registration under Securities Act.

     (a) Registration on Request.

            (i)  Request. If at any time any DLJ Entity or Marsh requests in
     writing (the requesting Person being referred to as the "Initiating
     Stockholder") that the Company effect the registration under the Securities
     Act of a specified number of the Registrable Securities held by it and
     specifying the intended method of disposition thereof, a copy of which
     request (the "Company Notice") shall be sent by the Company to the other
     Persons entitled to request registration under this Section 2(a) that have
     not made such registration request (the "Other Stockholders"), the Company
     will, in accordance with the provisions of Section 2(c) hereof, use its
     commercially reasonable efforts to effect the registration under the
     Securities Act of the Registrable Securities which the Company has been so
     requested to register by the Initiating Stockholder and by any Other
     Stockholders, so long as such Other Stockholders have requested that such
     Registrable Securities be included in such registration within 10 days of
     the date of the Company Notice, for disposition in accordance with the
     intended method or methods of disposition stated in the request by the
     Initiating Stockholder, all to the extent requisite to permit the
     disposition (in accordance with the intended methods thereof as aforesaid)
     of Registrable Securities to be so registered; provided that the Company
     shall not be required to effect (A) more than three registrations requested
     by the DLJ Entities pursuant to this Section 2(a), (B) more than two
     registrations requested by Marsh pursuant to this Section 2(a), (C) any
     registration under this Section 2(a) unless the Registrable Securities
     requested to be included therein by the Initiating Stockholder, in the
     reasonable judgment of the Board exercised in good faith, have an aggregate
     fair market value of at least $25,000,000, unless the Registrable
     Securities requested to be

                                        4
<PAGE>

included therein constitute all of the Registrable Securities then owned by the
Initiating Stockholder (and, in case of any DLJ Entity, all other DLJ Entities)
or (D) any registration under this Section 2(a) prior to the earlier of the date
that is six months after the effective date of the Company's most recent
registration statement (other than a registration on Form S-4 or Form S-8 or any
successor or similar forms) pursuant to which Registrable Securities are to be
or were sold pursuant to this Section 2(a) or the date that is three months
after the effective date of the Company's most recent registration statement
(other than a registration on Form S-4 or Form S-8 or any successor or similar
forms) pursuant to which the DLJ Entities or Marsh were entitled to request that
Registrable Securities be sold pursuant to Section 2(b). Any request by an
Initiating Stockholder pursuant to the first sentence of this Section 2(a) shall
indicate that such Initiating Stockholder intends, in good faith, to dispose of
all of the Registrable Securities as to which a request is made pursuant to this
Section 2(a) pursuant to an underwritten public offering; provided that such
intention shall not preclude a change to the plan of distribution to allow block
trades, it being understood that no such change may be made with the intention
of converting such registration into the functional equivalent of an "equity
shelf." A request to register Registrable Securities pursuant to this Section
2(a) that is made by any DLJ Entity or Marsh, as the case may be, in its
capacity as an "Other Stockholder" shall not reduce the number of registrations
available to such entity pursuant to paragraph (A) or (B), as the case may be,
of this Section 2(a)(i).

     (ii)  Effective Registration Statement. A registration requested pursuant
to this Section 2(a) shall not be deemed to be effected pursuant to Section 2(a)
(A) if a registration statement with respect thereto shall not have become
effective and remained effective for a period of at least 180 days (or such
shorter period in which the Registrable Securities included in such registration
pursuant to Section 2(a) have been sold thereunder), (B) if, after it has become
effective, such registration is interfered with for any reason by any stop
order, injunction or other order or requirement of the Commission or any other
governmental agency or any court, and the result of such interference is to
prevent the holders of Registrable Securities to be sold thereunder from
disposing of at least 75% of the Registrable Securities included in such
registration pursuant to Section 2(a) in accordance with the intended methods of
disposition or (C) if the conditions to closing specified in the purchase
agreement or underwriting agreement entered into in connection with any
underwritten registration shall not be satisfied or waived with the consent of
the holders of Registrable Securities that were to have been sold thereunder,
other than as


                                        5
<PAGE>

a result of any  breach  by any  holder of its  obligations  thereunder  or
hereunder.

    (iii)  Expenses.  The  Company  shall  pay  all  Registration  Expenses  in
connection with any registration requested pursuant to this Section 2(a).

     (iv)  Priority in Requested Registrations. If a requested registration
pursuant to this Section 2(a) involves an underwritten offering, and the
managing underwriter shall advise the Company in writing that, in its view, (1)
the number of securities requested, pursuant to this Section 2(a), to be
included in such registration (including Common Shares which the Company
proposes to include, whether or not for the sale for its own account, which are
not Registrable Securities) or (ii) the inclusion of some or all of the Common
Shares owned by other shareholders of the Company (including Registrable
Securities proposed to be included by any Stockholder pursuant to Section 2(b)),
in either case, exceeds the number which can be sold in such offering without
having an adverse impact on such offering, including the price at which such
shares can be sold (the "Maximum Offering Size"), the Company will include in
such registration, in the priority listed below, up to the Maximum Offering Size
(A) first, Registrable Securities requested, pursuant to this Section 2(a), to
be included in such registration by the DLJ Entities and Marsh, as the case may
be, (pro rata as between them based on the number of Registrable Securities
proposed to be so registered) and (B) second, Registrable Securities requested
to be included in such registration by the Company for its own account, by Byrne
pursuant to Section 2(b) or by any other holder of Common Shares having
registration rights, in the case of this paragraph (B), pro rata among such
holders on the basis of the number of Registrable Securities requested to be so
registered; provided that if, as a result of any reduction in Registrable
Securities to be sold as contemplated by this Section 2(a)(iv), the Initiating
Stockholder is entitled to sell pursuant to such registration less than 65% of
the Registrable Securities requested to be included pursuant to Section 2(a),
the request by the Initiating Stockholder that initiated such registration shall
not reduce the number of registrations available to the Initiating Stockholder
pursuant to paragraph (A) or (B), as the case may be, of Section 2(a)(i).

(b) Incidental Registration.

     (i)  Right to Include Registrable Securities. If the Company at any time
proposes to register any Common Shares under the Securities Act, whether for its
own account or the account of a third party (other than by a registration (A) on
Form S-4 or S-8 or any successor or similar

                                        6
<PAGE>

forms, (B) relating to Common Shares issuable upon exercise of employee stock
options or in connection with any employee benefit plan or (C) in connection
with any direct or indirect exchange offer, amalgamation, merger, acquisition or
similar transaction whether or not for sale for its own account), the Company
will at each such time give prompt written notice to the Stockholders of its
intention to do so and of such holders' rights under this Section 2(b). Upon the
written request of any such holder of Registrable Securities made within 10 days
after the receipt of any such notice (which request shall specify the
Registrable Securities intended to be disposed of by such holder and the
intended method of disposition thereof), the Company will, subject to the
provisions of paragraph (iii) of this Section 2(b), use its reasonable efforts
to effect the registration under the Securities Act of all Registrable
Securities which the Company has been so requested to register by the holders
thereof, to the extent requisite to permit the disposition (in accordance with
the intended methods thereof as aforesaid) of the Registrable Securities so to
be registered; provided that (i) if such registration involves an underwritten
offering, all such holders of Registrable Securities requesting to be included
in such registration must enter into the underwriting agreement as contemplated
by Section 2(d) hereof and (ii) if, at any time after giving written notice of
its intention to register any securities pursuant to this Section 2(b) and prior
to the effective date of the registration statement filed in connection with
such registration, the Company shall determine for any reason not to register or
to delay registration of such securities, the Company may, at its election, give
written notice of such determination to all such shareholders and, thereupon,
(A) in the case of a determination not to register, shall be relieved of its
obligation to register any Registrable Securities in connection with such
registration and (B) in the case of a determination to delay registering, shall
be permitted to delay registering any Registrable Securities, for the same
period as the delay in registering such other securities.

     (ii)  Expenses. The Company shall pay all Registration Expenses in
connection with any registration requested pursuant to this Section 2(b).

    (iii)  Priority in Incidental Registrations. If a registration pursuant to
this Section 2(b) involves an underwritten offering (other than in the case of a
registration under Section 2(a)), and the managing underwriter shall advise the
Company in writing, that, in its opinion, the number of securities requested and
otherwise proposed to be included in such registration exceeds the Maximum
Offering Size, the Company will include in such registration, in the following
priority, up to the Maximum Offering Size, (1) first, the securities proposed to
be issued by the



                                        7
<PAGE>

     Company, (2) second, all Common Shares proposed to be registered for the
     account of the Stockholders and requested to be included in such
     registration, pro rata in accordance with the number of Common Shares
     proposed to be registered by such Stockholders and (3) third, all Common
     Shares proposed to be registered for the account of other Persons, if any,
     having registration rights granted after the date hereof and requested to
     be included in such registration (whether or not such request arises from a
     demand registration right granted to such person), pro rata in accordance
     with the number of Common Shares proposed to be registered by such other
     Persons, or otherwise allocated among such Persons in such proportion as
     such Persons and the Company shall agree. Notwithstanding the foregoing,
     after the 18 month anniversary of the Closing Date, the Persons referred to
     in clauses (2) and (3) shall include Common Shares in any registration
     pursuant to this Section 2(b) pro rata in accordance with the number of
     Common Shares requested to be included in such registration by all such
     Persons; provided that if, after such 18 month anniversary, a request
     pursuant to this Section 2(b) occurs in respect of an underwritten offering
     made at the request of any other Person pursuant to registration rights
     granted to such Person after the date hereof in connection with the
     issuance by the Company of securities, and the managing underwriter has
     advised the Company in writing, that, in its opinion, the number of
     securities requested and otherwise proposed to be included in such
     registration exceeds the Maximum Offering Size, the Company will include in
     such registration, in the following priority, up to the Maximum Offering
     Size, (1) first, the securities proposed to be registered by such Person
     and (2) second, all Common Shares proposed to be registered for the account
     of other Persons (including the Stockholders), if any, requested to be
     included in such registration pro rata in accordance with the numbers of
     other securities proposed to be registered by the other Persons or
     otherwise allocated among such other Persons in such proportion as such
     holders and the Company shall agree.

     (c)  Registration Procedures. If and whenever the Company is required to
use its reasonable efforts to effect the registration of any Registrable
Securities under the Securities Act as provided in Section 2(a) or Section 2(b)
the Company will as expeditiously as practicable:

             (i)  prepare and file with the Commission the requisite
     registration statement to effect such registration and thereafter use its
     commercially reasonable efforts to cause such registration statement to
     become effective; provided that the Company may postpone the filing or
     effectiveness of a registration for a reasonable period not to exceed 90
     days from the date of the request, if the Board reasonably believes that

                                        8
<PAGE>

     such registration might reasonably be expected to have an adverse effect on
     any proposal or plan to engage in any acquisition of assets or capital
     stock or any amalgamation, merger, consolidation, tender offer or similar
     transaction; or would otherwise require disclosure of information which the
     Board in its reasonable judgement determines should not be disclosed;
     provided further that no more than one postponement under this clause (i)
     or termination under clause (ii) below may be imposed in any twelve month
     period.

          (ii)  prepare and file with the Commission such amendments and
     supplements to such registration statement and the prospectus used in
     connection therewith as may be necessary to keep such registration
     statement continuously effective for a period of either (A) 180 days
     (without including in such period the number of days in any Delay Period
     (as hereinafter defined)) or (B) such shorter period as will terminate when
     all of the securities covered by such registration statement have been
     disposed of in accordance with the intended methods of disposition by the
     seller or sellers thereof set forth in such registration statement (but in
     any event not before the expiration of any longer period required under the
     Securities Act), and to comply with the provisions of the Securities Act
     with respect to the disposition of all securities covered by such
     registration statement; provided that the Company may terminate the
     effectiveness of a registration if the Board reasonably believes that such
     registration would reasonably be expected to have an adverse effect on any
     proposal or plan to engage in any acquisition of assets or capital stock or
     any amalgamation, merger, consolidation, tender offer or similar
     transaction or would otherwise require disclosure of information which the
     Board determines in its reasonable judgement should not be disclosed;

         (iii)  furnish to each Requesting Holder such number of conformed
     copies of such registration statement and of each such amendment and
     supplement thereto (in each case including all exhibits, but only one copy
     thereof to each such Requesting Holder), such number of copies of the
     prospectus contained in such registration statement (including each
     preliminary prospectus and any summary prospectus) and any other prospectus
     filed under Rule 424 under the Securities Act, in conformity with the
     requirements of the Securities Act, and such other documents in order to
     facilitate the disposition of the Registrable Securities owned by such
     Requesting Holder, as such Requesting Holder may reasonably request;

          (iv)  use its commercially reasonable efforts to register or qualify
     such Registrable Securities and other securities covered by such

                                        9
<PAGE>

     registration statement under such other securities or blue sky laws of such
     jurisdictions as each seller thereof shall reasonably request, to keep such
     registration or qualification in effect for so long as such registration
     statement remains in effect, and to take any other action which may be
     reasonably necessary or advisable to enable such seller to consummate the
     disposition in such jurisdictions of the securities owned by such seller;
     provided that the Company shall not for any such purpose be required to (A)
     qualify generally to do business as a foreign corporation in any
     jurisdiction where it would not otherwise be required to qualify but for
     the requirements of this clause (iv), (B) consent to general service of
     process in any such jurisdiction or (C) subject itself to taxation in such
     jurisdiction;

           (v)  use its commercially reasonable efforts to cause all Registrable
     Securities covered by such registration statement to be registered with or
     approved by such other governmental agencies or authorities as may be
     necessary by virtue of the business and operations of the Company to enable
     the seller or sellers thereof to consummate the disposition of such
     Registrable Securities;

          (vi)  promptly notify each seller of Registrable Securities, at any
     time when a prospectus relating thereto is required to be delivered under
     the Securities Act, upon discovery that, or upon the discovery of the
     happening of any event as a result of which the prospectus included in such
     registration statement, as then in effect, includes an untrue statement of
     a material fact or omits to state any material fact required to be stated
     therein or necessary to make the statements therein not misleading in the
     light of the circumstances under which they were made, and at the request
     of any such seller promptly prepare and furnish to such seller a reasonable
     number of copies of a supplement to or an amendment of such prospectus as
     may be necessary so that, as thereafter delivered to the purchasers of such
     securities, such prospectus shall not include an untrue statement of a
     material fact or omit to state a material fact required to be stated
     therein or necessary to make the statements therein not misleading in the
     light of the circumstances under which they were made;

          (vii)  otherwise use its commercially reasonable efforts to comply
     with all applicable rules and regulations of the Commission, and make
     available to its security holders, as soon as reasonably practicable, an
     earnings statement covering a period of at least twelve months, but not
     more than eighteen months, beginning with the first full calendar month
     after the effective date of such registration statement, which earnings

                                       10
<PAGE>

     statement  shall  satisfy  the  provisions  of  Section 11(a) of the
     Securities Act; and

          (viii)  use its commercially reasonable efforts to cause all such
     Registrable Securities covered by such registration statement to be listed
     on any national securities exchange (if such Registrable Securities are not
     already so listed), and on each other securities exchange, on which similar
     securities issued by the Company are then listed, if the listing of such
     Registrable Securities is then permitted under the rules of such exchange.

     The Company may require each seller of Registrable Securities as to which
any registration is being effected to furnish promptly to the Company such
information regarding such seller and such seller's Registrable Securities as
the Company may from time to time reasonably request and such other information
as may be legally required in connection with such registration.

     Each holder of Registrable Securities agrees that upon receipt of any
notice from the Company of the happening of any event of the kind described in
clause (vi) of this Section 2(c), such holder will forthwith discontinue such
holder's disposition of Registrable Securities pursuant to the registration
statement relating to such Registrable Securities until such holder's receipt of
the copies of the supplemented or amended prospectus contemplated by clause (vi)
of this Section 2(c) (a "Delay Period") and, if so directed by the Company, such
holder will deliver to the Company all copies, other than permanent file copies
then in such holder's possession, of the prospectus relating to such Registrable
Securities current at the time of receipt of such notice.

        (d)  Underwritten Offerings. The DLJ Entities will have the right, in
their sole discretion, to select an underwriter or underwriters in connection
with any underwritten offering resulting from the exercise by any DLJ Entity of
a demand for registration under Section 2(a), in which offering the Registrable
Securities to be registered by the DLJ Entities pursuant to Section 2(a)
constitute more than 50% of all Registrable Securities to be registered pursuant
to Section 2(a). Such underwriter or underwriters may include any Affiliate of
any DLJ Entity. The Board shall select, in its sole discretion, the underwriter
or underwriters in connection with any other underwritten offering; provided
that, in any underwritten offering in which Marsh is the Initiating Stockholder,
the lead underwriters of such offering shall be reasonably acceptable to Marsh
and; provided further that, in any underwritten offering in which at least 30%
of the securities to be sold are owned by the DLJ Entities, the DLJ Entities
shall have the right to designate one co-lead underwriter in connection with
such offering (which will not, unless the Company consents, be the book-runner).
Such underwriter may include any Affiliate of any DLJ Entity. The underwriting

                                  11
<PAGE>

     agreement shall be reasonably satisfactory in substance and form to the
     Board and shall contain such representations and warranties by the Company
     and by the selling stockholders and such other terms as are generally
     prevailing in agreements of this type, including, without limitation,
     indemnities to the effect and to the extent provided in Section 2(f). No
     Person may participate in any underwritten registration hereunder unless
     such Person (i) agrees to sell such Person's securities on the basis
     provided in any underwriting arrangements reasonably approved by the Board
     that are consistent with the provisions of this Agreement and (ii)
     completes and executes all questionnaires, powers of attorney, indemnities,
     underwriting agreements and other documents reasonably required under the
     terms of such underwriting arrangements and the provisions of this
     Agreement.

          (e) Holdback Agreements. Each holder of Registrable Securities agrees
     for the benefit of the Company, so long as the Company and its controlling
     stockholders agree to be similarly bound, not to effect any sale or
     distribution of any equity securities of the Company, or any securities
     convertible into or exchangeable or exercisable for such securities,
     including a sale pursuant to Rule 144 under the Securities Act (or any
     similar provision then in force), during the 30 day period before the
     effective date of such registration statement (except as part of such
     registration statement) or during the period after such effective date that
     such managing underwriter or the Board, in their reasonable judgement,
     shall agree (but not to exceed 180 days); provided that the transferees in
     any sale not prohibited hereunder (other than as part of such underwritten
     public offering) shall agree to be bound by the terms of this Section 2(e).

          (f) Indemnification.

               (i) Indemnification by the Company. In the event of any
          registration of any securities of the Company under the Securities Act
          pursuant to this Section 2, the Company will, and hereby does,
          indemnify and hold harmless, the seller of any Registrable Securities
          covered by such registration statement, its directors, officers,
          agents and employees, each other Person who participates as an
          underwriter in the offering or sale of such securities and each other
          Person, if any, who controls such seller or any such underwriter
          within the meaning of the Securities Act, against any losses, claims,
          damages or liabilities, joint or several, to which such seller or any
          such director, officer, agent, employee, underwriter or controlling
          person may become subject under the Securities Act or otherwise,
          insofar as such losses, claims, damages or liabilities (or actions or
          proceedings, whether commenced or threatened, in respect thereof)
          arise out of or are based upon (A) any untrue statement or alleged
          untrue statement of any material fact contained (x) in any
          registration statement under which such

                                       12
<PAGE>

          securities were registered under the Securities Act, any preliminary
          prospectus, final prospectus or summary prospectus contained therein
          or used in connection with the offering of securities covered thereby,
          or any amendment or supplement thereto or any document included by
          reference therein, or (y) in any application or other document or
          communication (in this Section 2(f) collectively called an
          "application") executed by or on behalf of the Company or based upon
          written information furnished by or on behalf of the Company filed in
          any jurisdiction in order to qualify any securities covered by such
          registration statement under the "blue sky" or securities laws
          thereof, or (B) any omission or alleged omission to state therein a
          material fact required to be stated therein or necessary to make the
          statements therein not misleading, and the Company will reimburse such
          seller and each such director, officer, agent, employee, underwriter
          and controlling person for any legal or any other expenses incurred by
          them in connection with investigating or defending any such loss,
          claim, liability, action or proceeding; provided that the Company
          shall not be liable in any such case to the extent that any such loss,
          claim, damage, liability (or action or proceeding in respect thereof)
          or expense arises out of or is based upon an untrue statement or
          alleged untrue statement, or omission or alleged omission, made in
          such registration statement, any such preliminary prospectus, final
          prospectus, summary prospectus, amendment or supplement, or in any
          application, in reliance upon and in conformity with written
          information prepared and furnished to the Company by such seller
          specifically for use in the preparation thereof which information
          contained any untrue statement of any material fact or omitted to
          state therein a material fact required to be stated therein or
          necessary to make the statements therein not misleading; and provided
          further that the Company shall not be liable to any Person who
          participates as an underwriter in any such registration or any other
          Person who controls such underwriter within the meaning of the
          Securities Act, in any such case to the extent that any such loss,
          claim, damage, liability (or action or proceeding in respect thereof)
          or expense arises out of such Person's failure to send or give a copy
          of the final prospectus, as the same may be then supplemented or
          amended (provided it has been made available to such Person in
          accordance with the terms hereof), to the Person asserting an untrue
          statement or alleged untrue statement or omission or alleged omission
          at or prior to the written confirmation of the sale of the securities
          to such Person if such statement or omission was corrected in such
          final prospectus. Such indemnity shall remain in full force and effect
          regardless of any investigation made by or on behalf of such seller or
          any such director, officer, agent, employee, underwriter or
          controlling Person and shall survive the transfer of such securities
          by such seller. The Company shall not be obligated to pay the fees and
          expenses of more than one

                                       13
<PAGE>

          counsel or firm of counsel for all parties indemnified in respect of a
          claim for each jurisdiction in which such counsel is required unless
          in the reasonable judgment of counsel for the indemnified party a
          conflict of interest may exist between such indemnified party and any
          other indemnified party in respect of such claim.

                (ii) Indemnification by the Sellers. The Company may require, as
          a condition to including any Registrable Securities in any
          registration statement filed pursuant to this Section 2, that the
          Company shall have received an undertaking satisfactory to it from the
          prospective seller of such Registrable Securities, to indemnify and
          hold harmless (in the same manner and to the same extent as set forth
          in Section 2(f)(i)) the Company, each director of the Company, each
          officer of the Company and each other Person, if any, who controls the
          Company within the meaning of the Securities Act, with respect to any
          statement or alleged statement in or omission or alleged omission from
          such registration statement, any preliminary prospectus, final
          prospectus or summary prospectus contained therein, or any amendment
          or supplement thereto, or any application, if such statement or
          alleged statement or omission or alleged omission was made in reliance
          upon and in conformity with written information prepared and furnished
          to the Company by such seller, as to such seller, specifically for use
          in the preparation of such registration statement, preliminary
          prospectus, final prospectus, summary prospectus, amendment or
          supplement, or such application, which information contained any
          untrue statement of any material fact or omitted to state therein a
          material fact required to be stated therein or necessary to make the
          statements therein not misleading. Such indemnity shall remain in full
          force and effect, regardless of any investigation made by or on behalf
          of the Company or any such director, officer or controlling Person and
          shall survive the transfer of such securities by such seller. The
          indemnity provided by each seller of securities under this Section
          2(f)(ii) shall be provided severally, and not jointly or jointly and
          severally with any other seller or prospective seller of securities,
          and shall be limited in amount to the net amount of proceeds received
          by such seller from the sale of Registrable Securities pursuant to
          such registration statement.

               (iii) Notices of Claims, etc. Promptly after receipt by an
          indemnified party of notice of the commencement of any action or
          proceeding involving a claim referred to in the preceding subdivisions
          of this Section 2(f), such indemnified party will, if a claim in
          respect thereof is to be made against an indemnifying party, give
          written notice to the latter of the commencement of such action;
          provided that the failure of any indemnified party to give notice as
          provided herein shall not relieve the

                                       14
<PAGE>

          indemnifying party of its obligations under the preceding subdivisions
          of this Section 2(f), except to the extent that the indemnifying party
          is materially prejudiced by such failure to give notice. In case any
          such action is brought against an indemnified party, unless in such
          indemnified party's reasonable judgment a conflict of interest between
          such indemnified and indemnifying parties may exist in respect of such
          claim, the indemnifying party shall be entitled to participate in and
          to assume the defense thereof, jointly with any other indemnifying
          party similarly notified to the extent that it may wish, with counsel
          reasonably satisfactory to such indemnified party. No indemnifying
          party shall, without the consent of the indemnified party, consent to
          entry of any judgment or enter into any settlement which does not
          include as an unconditional term thereof the giving by the claimant or
          plaintiff to such indemnified party of a release from all liability in
          respect to such claim or litigation.

               (iv)  Other Indemnification. Indemnification similar to that
          specified in the preceding subdivisions of this Section 2(f) (with
          appropriate and reasonable modifications) shall be given by the
          Company and each seller of Registrable Securities with respect to any
          required registration or other qualification of securities under any
          federal, state or provincial law or regulation of any governmental
          authority, other than the Securities Act.

                (v)  Indemnification Payments. The indemnification required by
          this Section 2(f) shall be made by periodic payments of the amount
          thereof during the course of the investigation or defense, as and when
          bills are received or expense, loss, damage or liability is incurred,
          subject to refund if the party receiving such payments is subsequently
          found not to have been entitled thereto hereunder.

               (vi)  Contribution. In order to provide for just and equitable
          contribution in circumstances under which the indemnity contemplated
          by this Section 2(f) is for any reason not available, the parties
          required to indemnify by the terms hereof shall contribute to the
          aggregate losses, liabilities, claims, damages and expenses of the
          nature contemplated by such indemnity agreement incurred by the
          Company, any seller of Registrable Securities and one or more of the
          underwriters, except to the extent that contribution is not permitted
          under Section 11(f) of the Securities Act. In determining the amounts
          which the respective parties shall contribute, there shall be
          considered the relative benefits received by each party from the
          offering of the Registrable Securities (taking into account the
          portion of the proceeds of the offering realized by each), the
          parties' relative knowledge and access to information concerning the

                                       15
<PAGE>

          matter with respect to which the claim was asserted, the opportunity
          to correct and prevent any statement or omission and any other
          equitable considerations appropriate under the circumstances. The
          Company and each Person selling securities agree with each other that
          no seller of Registrable Securities shall be required to contribute
          any amount in excess of the amount such seller would have been
          required to pay to an indemnified party if the indemnities under
          clauses (i) and (ii) above of this Section 2(f) were available. The
          Company and each such seller agree with each other and the
          underwriters of the Registrable Securities, if requested by such
          underwriters, that it would not be equitable if the amount of such
          contribution were determined by pro rata or per capita allocation
          (even if the underwriters were treated as one entity for such purpose)
          or for the underwriters' portion of such contribution to exceed the
          percentage that the underwriting discount bears to the initial public
          offering price of the Registrable Securities. For purposes of this
          clause (vi), each Person, if any, who controls an underwriter within
          the meaning of Section 15 of the Securities Act shall have the same
          rights to contribution as such underwriter, and each director and each
          officer of the Company who signed the registration statement, and each
          Person, if any, who controls the Company or a seller of Registrable
          Securities within the meaning of Section 15 of the Securities Act
          shall have the same rights to contribution as the Company or a seller
          of Registrable Securities, as the case may be.

          SECTION 3. Other Registration Rights. Notwithstanding anything to the
contrary in this Agreement, the Company shall be permitted to grant to any
Person the right to request that the Company to register any equity securities
of the Company, or any securities convertible or exchangeable into or
exercisable for such securities, without the consent of holders of any
Registrable Securities, so long as no such registration rights conflict with or
are senior to, or would result in a delay in exercise or consummation of, the
rights granted pursuant to Section 2(a) or Section 2(b) hereunder (other than in
the manner contemplated by the final sentence of Section 2(b)(iii)).

          SECTION 4. Markel Guarantee. Markel hereby guarantees the performance
by the Company of all of its obligations under this Agreement and agrees to
cause the Company to execute a counterpart of this Agreement upon its
organization.

          SECTION 5. Amendments and Waivers. This Agreement may be amended and
the Company may take any action herein prohibited, or omit to perform any act
herein required to be performed by it, only if the Company shall have obtained
the written consent to such amendment, action or omission to act of the holders
of


                                       16
<PAGE>

          at least a  majority  of all  Registrable  Securities  held by the DLJ
          Entities, on the one hand, and by Marsh, on the other hand.

               SECTION 6. Notices. All communications provided for hereunder
          shall be in writing and shall be delivered personally or by facsimile
          or sent by first-class mail and addressed to Marsh and Byrne at the
          address that each, respectively, shall have furnished to the Company
          in writing, and

               if to the Company to:


                       Virginia Holdings Inc.
                       c/o Markel Corporation
                       451 Cox Road
                       Glen Allen, Virginia 23059
                       Attention:    Steven A. Markel
                       Facsimile:    (804) 527-3810

               and with a copy to:

                       McGuire, Woods, Battle & Boothe LLP
                       One James Center
                       Richmond, Virginia 23219
                       Attention:    Leslie A. Grandis
                       Facsimile:    (804) 775-1061

               and if to any DLJ Entity to:

                       DLJ Merchant Banking
                       277 Park Avenue
                       New York, New York 10172
                       Attention:    David L. Jaffe

               and with a copy to:

                       Davis Polk & Wardwell
                       450 Lexington Avenue
                       New York, New York 10017
                       Attention:    George R. Bason, Jr.
                       Facsimile:    (212) 450-4800

               SECTION 7. Binding Agreement. This Agreement shall be binding
          upon and inure to the benefit of and be enforceable by the parties
          hereto and their respective successors and assigns; provided that the
          rights accorded the DLJ


                                       17
<PAGE>

          Entities herein shall not inure to the benefit of any transferee or
          subsequent holder of any Registrable Securities, except to a Permitted
          Transferee acquiring Registrable Securities who has executed and
          delivered to the Company an agreement to be bound by this Agreement.
          Any such Permitted Transferee shall thereafter have all the rights
          accorded to the DLJ Entities hereunder. Notwithstanding the foregoing,
          (i) no Permitted Transferee obtaining its Registrable Securities as a
          result of a distribution in kind to all or substantially all of the
          limited partners of any DLJ Entity shall be entitled to the benefits
          of this Agreement (ii) no DLJ Partner or DLJ Associate may be an
          Initiating Stockholder, and (iii) all notices to any Permitted
          Transferee shall be deemed to have been satisfactorily given for
          purposes of this Agreement if given to DLJ Merchant Banking, Inc. at
          277 Park Avenue, New York, New York 10172; Attention: David L. Jaffe;
          Facsimile No: 212-892-7552, which shall have sole responsibility for
          giving notice to such Permitted Transferees and coordinating the
          participation by such Permitted Transferees in any registration of
          Registrable Securities pursuant hereto.

               SECTION 8. Descriptive Headings. The descriptive headings of the
          several sections and paragraphs of this Agreement are inserted for
          reference only and shall not limit or otherwise affect the meaning
          hereof.

               SECTION 9. Specific Performance. The parties hereto recognize and
          agree that money damages may be insufficient to compensate the holders
          of any Registrable Securities for breaches by the Company of the terms
          hereof and, consequently, that the equitable remedy of specific
          performance of the terms hereof will be available in the event of any
          such breach.

               SECTION 10. Effectiveness. This Agreement shall be effective as
          of the Closing Date (as defined in the Merger Agreement) and the TNA
          Registration Rights Agreement shall automatically terminate as of such
          date.

               SECTION 11. Termination. This Agreement shall automatically
          terminate on the earlier of: (i) the date that is five years from the
          Closing Date (as defined in the Merger Agreement) or (ii), if the
          Closing Date does not occur, the termination of the Merger Agreement.

               SECTION 12. Governing Law. All questions concerning the
          construction, validity and interpretation of this agreement will be
          construed and enforced in accordance with, and the rights of the
          parties shall be governed by, the internal laws, and not the law of
          conflicts, of the State of New York.

               SECTION 13. Counterparts. This Agreement may be executed
          simultaneously in any number of counterparts, each of which shall be
          deemed an


                                               18
<PAGE>

          original, but all such counterparts shall together constitute one and
          the same instrument.

               SECTION 14. Entire Agreement. This Agreement, together with the
          Merger Agreement, is intended by the parties hereto as a final
          expression of their agreement and intended to be a complete and
          exclusive statement of their agreement and understanding in respect to
          the subject matter contained herein. This Agreement supersedes all
          prior agreements and understandings between the parties with respect
          to such subject matter.

                                       19

<PAGE>

               IN WITNESS WHEREOF,  the parties have caused this Agreement to be
          executed and delivered as of the date first above written.

                                             MARKEL CORPORATION

                                             By:     /s/ Steven A. Markel
                                                -------------------------------
                                                Name: Steven A. Markel
                                                Title: Vice Chairman


                                             VIRGINIA HOLDINGS INC.


                                             By:
                                                -------------------------------
                                                Name:
                                                Title:

                                       20
<PAGE>

                                              DLJ INTERNATIONAL PARTNERS, C.V.
                                              By: DLJ MERCHANT BANKING, INC.
                                                  Advisory General Partner

                                              By: /s/ David Jaffe
                                                 ------------------------------
                                                 Name: David Jaffe
                                                 Title: Managing Director

                                              DLJ OFFSHORE PARTNERS, C.V.
                                              By: DLJ MERCHANT BANKING, INC.
                                                  Advisory General Partner

                                              By: /s/ David Jaffe
                                                 ------------------------------
                                                  Name: David Jaffe
                                                  Title: Managing Director

                                              DUMB OVERSEAS PARTNERS, C.V.
                                              By: DLJ MERCHANT BANKING, INC.
                                                  Advisory General Partner

                                              By: /s/ David Jaffe
                                                 ------------------------------
                                                  Name: David Jaffe
                                                  Title: Managing Director



                                       21
<PAGE>

                                            DLJ MERCHANT BANKING
                                             FUNDING, INC.

                                            By: /s/ Ivy Dodes
                                                -------------------------------
                                                Name: Ivy Dodes
                                                Title: Vice President

                                            DLJ FIRST ESC, L.P.
                                            By: DLJ LBO PLANS MANAGEMENT
                                                CORPORATION, its General Partner

                                            By: /s/ Ivy Dodes
                                                -------------------------------
                                                Name: Ivy Dodes
                                                Title: Vice President

                                            DONALDSON, LUFKIN & JENRETTE
                                             SECURITIES CORPORATION

                                            By; /s/ Ivy Dodes
                                                -------------------------------
                                                Name: Ivy Dodes
                                                Title: Vice President




<PAGE>

                                           MARSH & MCLENNAN CAPITAL, INC. on
                                           behalf of itself, MARSH &
                                           MCLENNAN RISK CAPITAL HOLDINGS,
                                           LTD., other related MARSH & MCLENNAN
                                           CAPITAL. INC. entities and RISK
                                           CAPITAL REINSURANCE COMPANY


                                           By:  /s/ Philip Petronis
                                              --------------------------------
                                              Name: Philip Petronis
                                              Title:


                                       23
<PAGE>

                                             JOHN J. BYRNE, on his own behalf
                                             and on behalf of certain entities
                                             as to which, with respect to Common
                                             Shares held by such entities, he
                                             has voting and dispositive power


                                             /s/ John J. Byrne
                                             ----------------------------------
                                      24

<PAGE>

                                                                    Exhibit 99.5

                  MARKEL CORPORATION AND TERRA NOVA (BERMUDA)
                    HOLDINGS LTD. ANNOUNCE MERGER AGREEMENT

RICHMOND, Virginia and HAMILTON, Bermuda, August 16, 1999 -- Markel Corporation
(NYSE: MKL) and Terra Nova (Bermuda) Holdings Ltd. (NYSE: TNA), today announced
that Markel and Terra Nova have signed an agreement providing for Markel's
acquisition of Terra Nova for cash and stock valued at $905 million or $34.00
per share based on the closing price of Markel's common stock on August 13,
1999. In addition, Markel will assume $175 million of Terra Nova debt. The
transaction, which is subject to approval by the shareholders of both Markel and
Terra Nova, the receipt of necessary regulatory approvals and other customary
closing conditions, is expected to be completed by the end of 1999 or early in
2000.

Alan I. Kirshner, Chairman and Chief Executive Officer of Markel, stated, "We
are extremely pleased to have Terra Nova join the Markel Group. They share our
focus on underwriting profitability and financially and strategically, our
combined organization will be well positioned to compete internationally. We
look forward to offering our customers greater security, a broader array of
products and superior worldwide service capabilities."

John J. Dwyer, Chairman of Terra Nova stated, "This transaction presents
substantial benefits to our policyholders, significant opportunities for our
employees, and, most importantly, the best value for our shareholders. We are
delighted that an agreement has been reached and are looking forward to joining
Markel and the rewards and satisfaction of growing a profitable global company."

Nigel Rogers, President and Chief Executive Officer of Terra Nova will become an
executive officer of Markel and will join the Markel Board of Directors. In
addition, Markel Corporation will add two additional Terra Nova board members.

Pursuant to the terms of the merger agreement, the consideration will consist of
approximately $362 million in cash and 2.94 million Markel common shares.
Shareholders will have the ability to elect to receive cash, stock or a
combination of cash and stock, subject to certain maximum levels (currently
expected to be 60% stock and 40% cash) for each form of consideration. Subject
to these limits, Terra Nova shareholders may elect to receive $34.00 in cash or
0.184 shares of Markel common stock for each Terra Nova share. The transaction
is intended to provide a tax-free exchange for shares of Markel common stock
received in the transaction. The acquisition will be accounted for as a purchase
transaction.
<PAGE>

Based on current information, Markel expects the transaction to be accretive to
earnings and book value. Pro forma estimated book value at closing is expected
to increase by over 50% to approximately $112 per share. In addition, Markel
expects pro forma estimated invested assets per share to increase by
approximately 22% to $377 per share.

The merger agreement contains customary termination provisions. In addition,
certain shareholders and directors of Terra Nova and Markel have agreed to vote
their shares in favor of the transaction.

Markel Corporation, based in Glen Allen, Virginia, markets and underwrites
specialty insurance products and programs to a variety of niche markets. In each
of these markets, the Company seeks to provide quality products and excellent
customer service so that it can be a market leader. The financial goals of the
Company are to earn consistent underwriting profits and superior investment
returns to build shareholder value.

Terra Nova (Bermuda) Holdings Ltd. is the holding company for five wholly owned
operating entities -- Terra Nova Insurance Company Limited in the UK, Terra Nova
(Bermuda) Insurance Company Ltd., Corifrance in Paris, and Terra Nova Capital
Limited and Octavian Syndicate Management Limited which manages eight Lloyd's
syndicates in which the Company has a participation. Through these companies,
Terra Nova underwrites a diverse property, casualty, marine and aviation
insurance and reinsurance business on a worldwide basis.

This is a "Safe Harbor" statement under the Private Securities Litigation Reform
Act of 1995. Certain statements contained herein are forward-looking statements
that involve risks and uncertainties. Future actual results may materially
differ from statements made in this document for many reasons. The agreement
provides for instances where the transaction may not close due to material
changes in the buyer's or seller's financial condition. Markel Corporation has
not finalized the financing structure for the purchase at this time. As a
result, pro forma estimates will likely change when the final financing
structure is determined. The transaction is subject to various regulatory
approvals. The failure or delay in obtaining any of these approvals could have a
material effect on the transaction.

CONTACTS:

Markel Corporation:  Steven A. Markel, 804-965-1675
Terra Nova (Bermuda) Holdings Ltd.: John J. Dwyer, 441-292-7731

                                       2


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