EXHIBIT 99.2


                         NOTICE OF GUARANTEED DELIVERY

                                 For Tender Of

                           7.2% Senior Notes due 2007
                                       of
                     TERRA NOVA INSURANCE (UK) HOLDINGS PLC
    
     This Notice of Guaranteed Delivery or one substantially equivalent hereto
must be used to accept the Exchange Offer (as defined below) if, with respect to
the 7.2% Senior Notes due 2007 (the "Old Notes") of the Issuer (as defined
below), the procedures for book-entry transfer cannot be completed on a timely
basis.  This Notice of Guaranteed Delivery may be delivered by hand or sent by
facsimile transmission, overnight courier, telex, telegram or mail to The Chase
Manhattan Bank (the "Exchange Agent").  See "The Exchange Offer -- Guaranteed
Delivery Procedures" in the Prospectus dated October 30, 1997 (which, together
with the related Letter of Transmittal, constitutes the "Exchange Offer") of
Terra Nova Insurance (UK) Holdings plc, a public limited company organized under
the laws of England and Wales (the "Issuer").      

                 The Exchange Agent for the Exchange Offer is:

                            THE CHASE MANHATTAN BANK

By Hand or Overnight         Facsimile Transmissions:   By Registered Or
 Delivery:                    (Eligible Institutions     Certified Mail:
                                       Only)

The Chase Manhattan Bank                                The Chase Manhattan Bank
    450 W. 33rd St.                (212) 946-8177           450 W. 33rd St.
      15th Floor                                              15th Floor
New York, New York 10001     To Confirm by Telephone    New York, New York 10001
                             or for Information Call:
 Attention:  Corporate                                   Attention:  Corporate
 Trust Administration             (212) 946-3352         Trust Administration

 
     DELIVERY OF THIS NOTICE OF GUARANTEED DELIVERY TO AN ADDRESS OTHER THAN AS
SET FORTH ABOVE OR TRANSMISSION OF THIS NOTICE OF GUARANTEED DELIVERY VIA A
FACSIMILE TRANSMISSION TO A NUMBER OTHER THAN AS SET FORTH ABOVE WILL NOT
CONSTITUTE A VALID DELIVERY.

     THIS NOTICE OF GUARANTEED DELIVERY IS NOT TO BE USED TO GUARANTEE
SIGNATURES. IF A SIGNATURE ON A LETTER OF TRANSMITTAL IS REQUIRED TO BE
GUARANTEED BY AN "ELIGIBLE INSTITUTION" UNDER THE INSTRUCTIONS THERETO, SUCH
SIGNATURE GUARANTEE MUST APPEAR IN THE APPLICABLE SPACE PROVIDED ON THE LETTER
OF TRANSMITTAL.

                                       2

 
                   THE FOLLOWING GUARANTEE MUST BE COMPLETED

                             GUARANTEE OF DELIVERY

                    (Not to be used for Signature Guarantee)

          The undersigned, a firm which is a member of a registered national
securities exchange or a member of the National Association of Securities
Dealers, Inc. or a commercial bank or trust company having an office or
correspondent in the United States, hereby guarantees to deliver to the Exchange
Agent, at one of its addresses set forth above, confirmation of the book-entry
transfer of such Old Notes to the Exchange Agent's account at the Depository
Trust Company ("DTC"), pursuant to the procedures for book-entry transfer set
forth in the Prospectus, in either case together with one or more properly
completed and duly executed Letter(s) of Transmittal (or facsimile thereof) and
any other documents required by such Letter of Transmittal, within five New York
Stock Exchange trading days after the date of execution of this Notice of
Guaranteed Delivery.

          The undersigned acknowledges that it must deliver the Letter(s) of
Transmittal and all other documents required by the Letter of Transmittal to,
and a Book-Entry Confirmation must be received by, the Exchange Agent within the
time period set forth above and that failure to do so could result in a
financial loss to the undersigned.

Name of Firm:
             ----------------------        -----------------------------------
                                           (Authorized Signature)
 
Address:                                   Title:
        -----------------------------            -----------------------------  
                                           Name:                              
- -------------------------------------           ------------------------------
                           (Zip Code)              (Please type or print)

Area Code and Telephone Number:            Date:
                                                ------------------------------


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

NOTE: ACTUAL SURRENDER OF OLD NOTES MUST BE MADE BY A PROPERLY COMPLETED AND
FULLY EXECUTED LETTER OF TRANSMITTAL, ANY OTHER REQUIRED DOCUMENTS REQUIRED
THEREBY AND A BOOK-ENTRY CONFIRMATION BEING RECEIVED BY, THE EXCHANGE AGENT.

                                       3