UNITED STATES

                      SECURITIES AND EXCHANGE COMMISSION

                            WASHINGTON, D.C.  20549


                                   FORM 11-K

(Mark One)

[X]  ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES
     EXCHANGE ACT OF 1934

          For the fiscal year ended December 31, 2000

OR

[  ] TRANSITION REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES
     EXCHANGE ACT OF 1934

          For the transition period from __________ to __________



                       Commission file number 001-15811

                  MARKEL CORPORATION RETIREMENT SAVINGS PLAN



                              MARKEL CORPORATION
                            A Virginia Corporation
                 IRS Employer Identification Number 54-1959284
                            4521 Highwoods Parkway
                          Glen Allen, Virginia 23060
                           Telephone (804) 747-0136


                  MARKEL CORPORATION RETIREMENT SAVINGS PLAN

                             Financial Statements
                          and Supplemental Schedules

                          December 31, 2000 and 1999

                  (With Independent Auditors' Report Thereon)


                  MARKEL CORPORATION RETIREMENT SAVINGS PLAN

                               Table of Contents




                                                                                            Page
                                                                                         
Independent Auditors' Report                                                                  1

Statements of Assets Available for Benefits                                                   2

Statements of Changes in Assets Available for Benefits                                        3

Notes to Financial Statements                                                                 4

Schedules

Schedule of Assets Held for Investment Purposes at End of Year - December 31, 2000           11

Schedule of Reportable Transactions - Year ended December 31, 2000                           12



                         Independent Auditors' Report

The Board of Directors
Markel Corporation

The Administrative Committee
Markel Corporation Retirement Savings Plan:

We have audited the accompanying statements of assets available for benefits of
the Markel Corporation Retirement Savings Plan (the Plan) as of December 31,
2000 and 1999, and the related statements of changes in assets available for
benefits for the years then ended. These financial statements are the
responsibility of the Plan's management. Our responsibility is to express an
opinion on these financial statements based on our audits.

We conducted our audits in accordance with auditing standards generally accepted
in the United States of America. Those standards require that we plan and
perform the audit to obtain reasonable assurance about whether the financial
statements are free of material misstatement. An audit includes examining, on a
test basis, evidence supporting the amounts and disclosures in the financial
statements. An audit also includes assessing the accounting principles used and
significant estimates made by management, as well as evaluating the overall
financial statement presentation. We believe that our audits provide a
reasonable basis for our opinion.

In our opinion, the financial statements referred to above present fairly, in
all material respects, the assets available for benefits of the Markel
Corporation Retirement Savings Plan as of December 31, 2000 and 1999, and the
changes in assets available for benefits for the years then ended, in conformity
with accounting principles generally accepted in the United States of America.

Our audits were performed for the purpose of forming an opinion on the basic
financial statements taken as a whole. The supplemental schedules of assets held
for investment purposes at end of year (Schedule 1) and reportable transactions
(Schedule 2) are presented for the purpose of additional analysis and are not a
required part of the basic financial statements but are supplementary
information required by the Department of Labor's Rules and Regulations for
Reporting and Disclosure under the Employee Retirement Income Security Act of
1974. These supplemental schedules are the responsibility of the Plan's
management. The supplemental schedules have been subjected to the auditing
procedures applied in the audits of the basic financial statements and, in our
opinion, are fairly stated in all material respects in relation to the basic
financial statements taken as a whole.


                                   KPMG LLP

Richmond, Virginia
June 8, 2001

                                       1


                  MARKEL CORPORATION RETIREMENT SAVINGS PLAN

                  Statements of Assets Available for Benefits

                          December 31, 2000 and 1999

                                                 2000           1999
                                             ------------    -----------
Investments, at fair value (note 3):
     Mutual funds                            $ 57,125,624     57,011,606
     Markel Corporation common stock           25,613,691     20,953,775
     Loans receivable                           1,332,919      1,487,744
                                             ------------    -----------
          Total investments                    84,072,234     79,453,125
                                             ------------    -----------
Receivables:
     Employer's contribution                      386,713        359,250
     Participants' contributions                  322,292        278,773
                                             ------------    -----------
          Total receivables                       709,005        638,023
                                             ------------    -----------
          Assets available for benefits      $ 84,781,239     80,091,148
                                             ============    ===========

See accompanying notes to financial statements.

                                       2


                   MARKEL CORPORATION RETIREMENT SAVINGS PLAN

             Statements of Changes in Assets Available for Benefits

                    Years ended December 31, 2000 and 1999



                                                                              2000              1999
                                                                         ------------        ----------
                                                                                       
Additions to (deductions from) assets attributed to:
     Investment income:
          Net depreciation in fair value of investments (note 3)         $ (1,767,540)       (1,506,321)
          Loan interest                                                       122,138           122,133
          Interest and dividends                                            4,510,127         4,565,785
                                                                         ------------        ----------
                                                                            2,864,725         3,181,597
                                                                         ------------        ----------
     Contributions (note 2):
          Employer                                                          3,339,776         3,000,488
          Participants                                                      3,374,041         3,606,906
                                                                         ------------        ----------
                                                                            6,713,817         6,607,394
                                                                         ------------        ----------
               Total additions                                              9,578,542         9,788,991
                                                                         ------------        ----------
Deductions from assets attributed to participant
  distributions and withdrawals                                            (6,263,726)       (4,248,619)

Transfers from other qualified plans (note 6)                               1,375,275         4,360,137
                                                                         ------------        ----------
               Net increase                                                 4,690,091         9,900,509

Assets available for benefits:
     Beginning of year                                                     80,091,148        70,190,639
                                                                         ------------        ----------
     End of year                                                         $ 84,781,239        80,091,148
                                                                         ============        ==========


See accompanying notes to financial statements.

                                       3


                   MARKEL CORPORATION RETIREMENT SAVINGS PLAN

                         Notes to Financial Statements

                           December 31, 2000 and 1999

(1)  Summary of Significant Accounting Policies

     The following are the significant accounting policies followed by the
     Markel Corporation Retirement Savings Plan (the Plan).

     (a)  Basis of Presentation

          The accompanying financial statements, which present the assets of the
          Plan and changes in those assets, have been prepared on the accrual
          basis of accounting. Accordingly, contributions to the Plan and
          interest and dividend income are recognized as earned; plan benefits
          and withdrawals are recorded when paid and net appreciation and
          depreciation of investments are recognized as they occur. Loans
          receivable represent loans to participants made against their vested
          balances as permitted by the Plan.

     (b)  Use of Estimates

          Accounting principles generally accepted in the United States of
          America require the Administrative Committee of the Plan to make
          estimates and assumptions when preparing financial statements. Actual
          results could differ from those estimates.

     (c)  Investments

          The fair value of Markel Corporation common stock is based upon the
          quoted price of stock as of the end of each year.

          Investments in mutual funds are valued according to net asset values
          of the funds on the basis of fair values of the assets and liabilities
          thereof. Loans receivable are valued at the principal amount
          outstanding which approximates fair value.

          The change in the difference between the fair value and the cost of
          investments held at the beginning and end of each year, adjusted for
          realized gains or losses on investments sold during the year, is
          reflected in the statements of changes in assets available for
          benefits as appreciation or depreciation in the fair value of
          investments.

          The cost of investments sold is determined on the basis of average
          cost. Purchases and sales of investments are recorded on a settlement
          date basis. The recording of these transactions on a trade date basis
          would not have had a material impact on the accompanying financial
          statements.

     (d)  Income Taxes

          The Plan is in receipt of a favorable determination letter dated
          February 18, 1997, issued pursuant to Revenue Procedure 93-39, under
          Section 401(a) of the Internal Revenue Code, and the related trust is
          considered exempt from taxation under the provisions of Section
          501(a). In addition, the plan administrator believes the Plan operated
          in compliance with the plan document and current law for the years
          under audit. Accordingly, participants have not been taxed on their
          salary reduction contributions or investment earnings related to these
          contributions when received by the trustee under the Plan. Ordinarily,
          participants are subject to tax on these amounts when they receive
          distributions from the Plan.

          Under normal circumstances, the Plan will not be taxed on its dividend
          and interest income or any capita1 gains realized by it or any
          unrealized appreciation on investments.

                                       4                             (Continued)




                  MARKEL CORPORATION RETIREMENT SAVINGS PLAN

                         Notes to Financial Statements

                          December 31, 2000 and 1999

(2)  Summary of Significant Provisions of the Plan

     The following description of the Plan provides only general information.
     Participants should refer to the plan agreement for a more complete
     description of the Plan's provisions.

     (a)  General

     The Plan is a defined contribution plan covering all employees of Markel
     Corporation and its wholly-owned domestic subsidiaries (the Company).
     Employees, age eighteen or older, are eligible for the Plan upon date of
     employment, with matching Company contributions commencing after one year
     of service. The Plan is subject to the provisions of the Employee
     Retirement Income Security Act of 1974 (ERISA). The Plan is administered by
     an Administrative Committee appointed by the Chief Executive Officer of the
     Company. The assets of the Plan are held in trust under an agreement with
     Fidelity Management Trust Company, with administrative services provided by
     Fidelity Institutional Retirement Services Company, a division of Fidelity
     Investment Institutional Services Company, Inc. (the Trustee).

     (b)  Contributions

     Each year, the Company is obligated to contribute to the Plan, subject to
     certain limitations, an amount equal to 6% of each participant's
     compensation. The Company also contributes under the matching provision of
     the Plan an amount equal to 100% of the first 2% and 50% of the next 2% of
     compensation contributed by a participant, not to exceed 3% of the
     participant's compensation for any such year. Participants may contribute,
     in whole percentage increments, up to 15% of their annual compensation,
     excluding bonuses, on a pre-tax basis. The allocation of both employer and
     participant contributions to the various funds is based upon the individual
     participant's election. However, one-third of the employer's contribution,
     representing up to 3% of a participant's annual compensation, will be
     allocated to a restricted Company Stock Fund.

     Participant contributions, as shown in the accompanying statements of
     changes in assets available for benefits, include amounts rolled over into
     the Plan from other qualified plans totaling $103,839 and $741,807 for the
     years ended December 31, 2000 and 1999, respectively.

     (c)  Participant Accounts

     Each participant's account is credited with the participant's and Company's
     contributions and earnings of the Plan. The posting of earnings is made on
     a quarterly or more frequent basis.

     (d)  Vesting and Plan Termination

     Participants are immediately vested in their own contributions plus
     earnings thereon. Vesting in the Company's contributions is based on years
     of service as follows:

           Years of vesting service                   Vested percentage
           ------------------------                   -----------------
          Less than two years of service                      0%
          Two years of service                               20%
          Three years of service                             50%
          Four or more years of service                     100%

                                       5                             (Continued)




                  MARKEL CORPORATION RETIREMENT SAVINGS PLAN

                         Notes to Financial Statements

                          December 31, 2000 and 1999

     In accordance with the provisions of the Plan, any portion of the Company's
     contributions that has not vested at the time of a participant's withdrawal
     shall be forfeited by the participant and applied to reduce future Company
     contributions. For the years ended December 31, 2000 and 1999, forfeited
     amounts totaled $110,849 and $130,669, respectively.

     Although it has not expressed any intent to do so, the Company has the
     right under the Plan to discontinue its contributions at any time and to
     terminate the Plan subject to the provisions of ERISA.

(e)  Payment of Benefits

     Upon termination of service, participants may receive a lump sum amount
     equal to the value of their vested account within 45 days of the quarter
     end in which termination occurred or their account will continue to be held
     in the trust fund until the participant reaches age 65 or dies, whichever
     occurs first.

(f)  Participant Loans

     The Plan contains a provision for loans to participants with the plan
     administrator's consent. Under the terms of the Plan, participants may
     borrow from their accounts a minimum of $1,000 up to the lesser of $30,000
     or 30% of the vested value of the participant's account or under certain
     conditions up to a maximum of the lesser of $50,000 or 50%. Loans bear
     interest and are repayable in accordance with terms established by the
     Plan.

(g)  Investment Options

     The Plan offers nine investment fund options - the Company Stock Fund, the
     Fidelity Magellan Fund, the Fidelity Intermediate Bond Fund, the Fidelity
     Equity Income Fund, the Fidelity Puritan Fund, the Fidelity Retirement
     Money Market Portfolio, the Fidelity Stock Selector Fund, the Fidelity
     Contrafund and the Fidelity Overseas Fund. Participants in the Plan are
     able to direct into which Fund contributions are invested as discussed in
     note 2(b). Participants are allowed to change investment options daily.

(h)  Reclassifications

     Certain prior year amounts have been reclassified to conform with the
     current year presentation.

                                       6                      (Continued)


                  MARKEL CORPORATION RETIREMENT SAVINGS PLAN

                         Notes to Financial Statements

                          December 31, 2000 and 1999

(3)  Investments

     The Plan's investments are held by a trustee-administered trust fund. The
     following tables present the fair values of investments at December 31,
     2000 and 1999 representing five percent or more of the Plan's assets at the
     end of the respective years:

                                                       December 31, 2000
                                                   -------------------------
                                                    Number of
                                                    shares or        Fair
                                                      units          value
                                                    -----------  ------------
Markel Corporation common stock                      141,512     $ 25,613,691

Mutual funds:
     Fidelity Magellan Fund                          147,592       17,607,691
     Fidelity Equity Income Fund                     157,698        8,425,826
     Fidelity Puritan Fund                           449,562        8,465,255
     Fidelity Retirement Money Market Portfolio    6,455,234        6,455,234
     Fidelity Stock Selector Fund                    280,756        6,973,983

                                                         December 31, 1999
                                                   ----------------------------
                                                    Number of
                                                    shares or        Fair
                                                      units          value
                                                   -----------  ------------
Markel Corporation common stock                      135,186       20,953,775

Mutual funds:
     Fidelity Magellan Fund                          138,909       18,979,091
     Fidelity Equity Income Fund                     162,076        8,667,817
     Fidelity Puritan Fund                           436,159        8,300,106
     Fidelity Retirement Money Market Portfolio    6,918,660        6,918,660
     Fidelity Stock Selector Fund                    217,561        6,961,962

                                       7                          (Continued)


                  MARKEL CORPORATION RETIREMENT SAVINGS PLAN

                         Notes to Financial Statements

                          December 31, 2000 and 1999

     During 2000 and 1999, the Plan's investments (including investments bought,
     sold and held during the year) depreciated in fair value by $1,767,540 and
     $1,506,321, respectively, as follows:



                                                                                         Year ended
                                                                                         December 31,
                                                                                -----------------------------
                                                                                     2000           1999
                                                                                -------------  --------------
                                                                                         
     Markel Corporation common stock                                             $ 3,826,468     (3,487,801)

     Mutual funds:
       Fidelity Magellan Fund                                                     (2,553,499)     1,842,748
       Fidelity Intermediate Bond Fund                                               100,901       (157,478)
       Fidelity Equity Income Fund                                                   (58,087)      (263,161)
       Fidelity Puritan Fund                                                         (99,387)      (438,396)
       Fidelity Stock Selector Fund                                               (1,734,829)       671,869
       Fidelity Contrafund                                                          (728,412)       115,009
       Fidelity Overseas Fund                                                       (520,695)       210,889
                                                                                ------------   ------------

               Net change in fair value                                          $(1,767,540)    (1,506,321)
                                                                                ============   ============


(4)  Administrative Expenses

     The administrative expenses of the Plan have been paid by the Company to
     the Trustee. Expenses paid by the Company totaled approximately $39,895 and
     $91,545 for the years ended December 31, 2000 and 1999, respectively.

(5)  Reconciliation of Financial Statements to Form 5500

     The following is a reconciliation of assets available for benefits per the
     financial statements to the Form 5500:



                                                                                         December 31,
                                                                                -----------------------------
                                                                                     2000           1999
                                                                                -------------  --------------
                                                                                         
     Assets available for benefits per the financial statements                 $  84,781,239    80,091,148
     Amounts allocated to withdrawing participants                                   (903,703)   (1,029,580)
                                                                                -------------  ------------
     Assets available for benefits per the Form 5500                            $  83,877,536    79,061,568
                                                                                =============  ============


                                       8                             (Continued)


                  MARKEL CORPORATION RETIREMENT SAVINGS PLAN

                         Notes to Financial Statements

                          December 31, 2000 and 1999

     The following is a reconciliation of benefits paid to participants per the
     financial statements to the Form 5500:



                                                                                      Year ended December 31,
                                                                                   -----------------------------
                                                                                         2000          1999
                                                                                   -------------  --------------
                                                                                            
     Benefits paid to participants per the financial statements                    $   6,263,726      4,248,619
     Add amounts allocated to withdrawing participants at
        the end of the year                                                              903,703      1,029,580
     Less amounts allocated to withdrawing participants at
        the end of the prior year                                                      1,029,580      1,374,563
                                                                                   -------------  -------------
     Benefits paid to participants per the Form 5500                               $   6,137,849      3,903,636
                                                                                   =============  =============


     Amounts allocated to withdrawing participants are recorded on the Form 5500
     for benefit claims that have been processed and approved for payment prior
     to December 31 but not yet paid as of that date.

(6)  Transfers from Other Qualified Plans

     In conjunction with the Company's acquisition of certain renewal rights
     acquired from Acceptance Insurance Companies, Inc. (Acceptance), the
     Company agreed to employ approximately 55 Acceptance employees. Former
     Acceptance employees became eligible to participate in the Plan effective
     March 1, 2000. Additionally, the Plan received assets valued at $1,375,275
     in a trustee-to-trustee transfer from the Acceptance Insurance Companies,
     Inc. Tax-Deferred Savings Plan. These assets were merged into the Plan
     effective July 1, 2000.

     Effective January 15, 1999, Gryphon Holdings, Inc. (Gryphon) was acquired
     by the Company, becoming a wholly-owned subsidiary. As a result of the
     acquisition, all assets of the Gryphon Holdings, Inc. 401(k) and Savings
     Plan were merged into the Plan on December 31, 1999. Former Gryphon
     employees began contributing to the Plan on March 1, 1999.

(7)  Nonparticipant-Directed Investments

     Information about the assets available for benefits and the changes in
     assets available for benefits for the nonparticipant-directed investments
     as of and for the year ended December 31, 2000 is as follows:



                                                                                                
     Assets available for benefits - Markel Corporation common stock                               $  12,349,206
                                                                                                   =============

     Changes in assets:
       Interest                                                                                    $         968
       Net appreciation in fair value of investments                                                   1,801,188
       Employer contributions                                                                          1,150,481
       Distributions of benefits and withdrawal                                                         (690,570)
                                                                                                   -------------

               Net increase in assets available for benefits                                       $   2,262,067
                                                                                                   =============

                                       9                             (Continued)


                  MARKEL CORPORATION RETIREMENT SAVINGS PLAN

                         Notes to Financial Statements

                          December 31, 2000 and 1999


(8)  Related Party Transactions

     The Plan owned 141,512 shares of Markel Corporation common stock as of
     December 31, 2000, which had a cost basis of $11,825,017 and a fair value
     of $25,613,691. During the year, 20,257 shares of Markel Corporation common
     stock were purchased at a total cost of $2,870,980 and 13,931 shares, with
     a cost basis of $1,307,730, were sold for $2,037,532.

     Certain Plan investments are units of mutual funds managed by the Trustee,
     a party-in-interest.

(9)  New Accounting Pronouncements

     In June 1998, the Financial Accounting Standards Board issued SFAS No. 133,
     "Accounting for Derivative Instruments and Hedging Activities" ("SFAS No.
     133"). SFAS No. 133 requires that an entity recognize all derivatives and
     measure those instruments at fair value.

     SFAS No. 133 is effective for fiscal years beginning after June 15, 2000.
     Pursuant to SFAS No. 137, the Plan is required to adopt SFAS No. 133
     effective January 1, 2001. Management of the Plan has determined that SFAS
     No. 133 will have no impact on the Plan Financial statements.

                                       10


                                                                      Schedule 1
                  MARKEL CORPORATION RETIREMENT SAVINGS PLAN

        Schedule of Assets Held for Investment Purposes at End of Year

                               December 31, 2000



 Identity of issue,
borrower, lessor or            Description of investment including maturity date,               Current
   similar party              rate of interest, collateral, par or maturity value                value
----------------------      ----------------------------------------------------------    -----------------
                                                                                    
Markel Corporation*          141,512 shares of Markel Corporation common stock,
                              cost of $11,825,017                                          $    25,613,691

Mutual funds:
 Fidelity Investments*       147,592 shares of Fidelity Magellan Fund                           17,607,691

 Fidelity Investments*       374,046 shares of Fidelity Intermediate Bond Fund                   3,755,425

 Fidelity Investments*       157,698 shares of Fidelity Equity Income Fund                       8,425,826

 Fidelity Investments*       449,562 shares of Fidelity Puritan Fund                             8,465,255

 Fidelity Investments*       6,455,234 shares of Fidelity Retirement Money Market
                             Portfolio                                                           6,455,234

 Fidelity Investments*       280,756 shares of Fidelity Stock Selector Fund                      6,973,983

 Fidelity Investments*       79,251 shares of Fidelity Contrafund                                3,896,771

 Fidelity Investments*       44,965 shares of Fidelity Overseas Fund                             1,545,439
                                                                                          -----------------
     Total mutual funds                                                                         57,125,624

Markel Corporation           $1,332,919 in loan receivables from participants with
 Retirement Savings Plan*     interest rates of prime + 1% or 2%                                 1,332,919
                                                                                          -----------------
     Total investments                                                                     $    84,072,234
                                                                                          =================


* Party-in-interest

See accompanying independent auditors' report.

                                       11


                                                                      Schedule 2

                  MARKEL CORPORATION RETIREMENT SAVINGS PLAN

                      Schedule of Reportable Transactions

                         Year ended December 31, 2000



                                                                                                                Current
                                                                                       Expense                   value
                                                                                       incurred                of asset on
   Identity of                                      Purchase    Selling    Lease         with        Cost of   transaction     Net
  party involved         Description of assets       price       price     rental     transaction     asset       date         gain
-------------------- ---------------------------- ----------- ---------- ---------- --------------- --------- -------------- -------
                                                                                                     
        *** No reportable transactions ***


See accompanying independent auditors' report.

                                       12


                                   SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the
administrative committee members have duly caused this annual report to be
signed on behalf by the undersigned hereunto duly authorized.


                   MARKEL CORPORATION RETIREMENT SAVINGS PLAN


                   By:  /s/ Pamela J. Perrott
                   ------------------------
                        Administrative Committee Member


Date:  June 22, 2001

                                       1