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 (date of earliest event reported) - November 20, 2003

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

                               TRENWICK GROUP LTD.
             (Exact name of registrant as specified in its charter)
                          (in provisional liquidation)

          Bermuda                        1-16089                  98-0232340
 (State or other jurisdiction    (Commission File Number)       (IRS Employer
       of Incorporation)                                     Identification No.)

          LOM Building, 27 Reid Street
           Hamilton, HM 11, Bermuda                             Not Applicable
    (Address of principal executive offices)                      (Zip Code)

                                 (441) 292-4985
              (Registrant's telephone number, including area code)

                                      None
             (Former name or address, if changed since last report)



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

      (c)   Exhibits.

      Exhibit No.       Description
      -----------       -----------

      99.1              October 2003 Monthly Operating Report of Trenwick Group
                        Ltd. (in provisional liquidation), dated November 20,
                        2003.

      99.2              October 2003 Monthly Operating Report of Trenwick
                        America Corporation, dated November 20, 2003.

      99.3              October 2003 Monthly Operating Report of LaSalle Re
                        Holdings Limited (in provisional liquidation), dated
                        November 20, 2003.

      99.4              List of non-Debtor entities

Item 9. Regulation FD Disclosure

A. On November 20, 2003, Trenwick America Corporation, Trenwick Group Ltd. (in
provisional liquidation) and LaSalle Re Holding Limited (in provisional
liquidation) (collectively, the "Debtors" or "Companies") filed monthly
operating reports as of August 20, 2003 and October 31, 2003 and for the month
ended October 31, 2003 and the period from August 20, 2003 to October 31, 2003
(the "October 2003 Monthly Operating Reports") with the United States Bankruptcy
Court for the District of Delaware (the "Bankruptcy Court"). Copies of the
October 2003 Monthly Operating Reports are attached hereto as Exhibits 99.1,
99.2 and 99.3 and are incorporated herein by reference. The October 2003 Monthly
Operating Reports include financial information only with respect to the
Debtors. Accordingly, the Operating Reports do not contain detailed financial
information with respect to those subsidiaries and affiliates of Trenwick Group
Ltd. that have not commenced proceedings to reorganize under chapter 11 of the
United States Bankruptcy Code or have not filed insolvency proceedings in the
Supreme Court of Bermuda. The non-Debtor entities are listed in Exhibit 99.4.

      The October 2003 Monthly Operating Reports (the "Operating Reports") are
in a format prescribed by the applicable bankruptcy laws. Readers are cautioned
not to place undue reliance upon the information contained in the Operating
Reports. The information in the Operating Reports has been prepared in
accordance with accounting standards generally accepted in the United States of
America for interim reporting, with the exception of accounting for wholly-owned
subsidiaries of the Debtors, which have not been consolidated. In addition,
certain information and footnote disclosures required by accounting principles
generally accepted in the United States of America have been condensed or
omitted for purposes of the Operating Reports. There can be no assurance that
the Operating Reports are complete, and the Companies undertake no obligation to
update or revise the Operating Reports. The Operating Reports have not been
audited or reviewed by independent accountants.



      The unaudited information in the Operating Reports is subject to further
review and potential adjustments and is not necessarily indicative of future
results. In addition, the Operating Reports contain information for periods
which are different from those contained in the Debtors' reports pursuant to the
Securities Exchange Act of 1934, as amended (the "Exchange Act"), and do not
include consolidated results of the Debtors. Accordingly, the substance and
format of the Operating Reports do not allow for meaningful comparison with the
Companies' previously disclosed consolidated financial statements.

      Although not included in Exhibit 99.2 hereto, the October 2003 Monthly
Operating Report of Trenwick America Corporation as filed with the Bankruptcy
Court also included Federal tax returns. The financial statements included in
the Operating Reports were prepared using certain assumptions and estimates that
are subject to revision. Any adjustments for these estimates (based upon changes
in facts and circumstances, further analysis, and other factors) will be
reflected in the financial statements in the period during which such
adjustments are made. These adjustments could have a material impact on reported
results in the future.

      In the future, so long as each Debtor remains under the supervision of the
Bankruptcy Court, in lieu of filing quarterly reports on Form 10-Q and annual
reports on Form 10-K, each such Debtor intends to file on Form 8-K its monthly
operating reports as filed with, and in the format prescribed by, the Bankruptcy
Court.

B. On August 20, 2003, Trenwick Group Ltd. and LaSalle Re Holdings Limited filed
insolvency proceedings in the Supreme Court of Bermuda (the "Bermuda Court"). On
August 22, 2003, the Bermuda Court granted an order appointing Michael Morrison
and John Wardrop, partners of KPMG in Bermuda and KPMG LLP in the United
Kingdom, respectfully, as Joint Provisional Liquidators ("JPLs") in respect of
Trenwick Group Ltd. and LaSalle Re Holdings Limited. The Bermuda Court granted
the JPLs the power to oversee the continuation and reorganization of these
companies' businesses under the control of their boards of directors and under
the supervision of the Bankruptcy Court and the Bermuda Court. The JPLs have not
audited the contents of this report.

      The Companies are debtors and debtors-in-possession in In re Trenwick
America Corporation, et al., Case No. 03-12635 (MFW) (Bankr. D. Del. 2003), In
re Trenwick Group Ltd., et al., Case No. 03-12636 (MFW) (Bankr. D. Del. 2003)
and In re LaSalle Re Holdings Limited, et al., Case No. 03-12637 (MFW) (Bankr.
D. Del. 2003).

Limitation on Incorporation by Reference

      In accordance with general instruction B.2 of Form 8-K, the Operating
Reports and other information in this Report (including exhibits) are furnished
pursuant to Item 9 and shall not be deemed to be "filed" for the purposes of
Section 18 of the Exchange Act, or otherwise subject to liabilities under that
Section, nor shall they be deemed to be incorporated by reference in any filing
under the Securities Act of 1933, as amended, except as expressly set forth in
such filing. This report will not be deemed an admission as to the materiality
of any information in the report that is required to be disclosed solely by
Regulation FD.



                                   SIGNATURES

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

                                TRENWICK GROUP LTD. (in provisional liquidation)


                                By: /s/ W. Marston Becker
                                    -------------------------------------------
                                    Name:  W. Marston Becker
                                    Title: Chairman and Chief Executive Officer

Dated: December 5, 2003



                                  EXHIBIT INDEX

            Exhibit No.   Description
            -----------   -----------

            99.1.         October 2003 Monthly Operating Report of Trenwick
                          Group Ltd. (in provisional liquidation), dated
                          November 20, 2003.

            99.2.         October 2003 Monthly Operating Report of Trenwick
                          America Corporation, dated November 20, 2003.

            99.3.         October 2003 Monthly Operating Report of LaSalle Re
                          Holdings Limited (in provisional liquidation), dated
                          November 20, 2003.

            99.4.         List of non-Debtor entities