Ownership Submission
FORM 5
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
Form 3 Holdings Reported
Form 4 Transactions Reported
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

ANNUAL STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940
OMB APPROVAL
OMB Number: 3235-0362
Expires: January 31, 2005
Estimated average burden hours per response... 1.0

1. Name and Address of Reporting Person *
BARRETTE RAYMOND JOSEPH RENE
 2. Issuer Name and Ticker or Trading Symbol
WHITE MOUNTAINS INSURANCE GROUP LTD [WTM] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
__X__ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
President & CEO
(Last)
(First)
(Middle)

C/O WHITE MOUNTAINS INSURANCE GROUP, LTD, 80 SOUTH MAIN STREET		 3. Statement for Issuer's Fiscal Year Ended (Month/Day/Year)
12/31/2004
(Street)


HANOVER, NH 03755		 4. If Amendment, Date Original Filed(Month/Day/Year)
 6. Individual or Joint/Group Reporting
(check applicable line)

_X_ Form Filed by One Reporting Person
___ Form Filed by More than One Reporting Person
(City)
(State)
(Zip)
Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3)		 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code
(Instr. 8)		 4. Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5)		 5. Amount of Securities Beneficially Owned at end of Issuer's Fiscal Year
(Instr. 3 and 4)		 6. Ownership Form: Direct (D) or Indirect (I)
(Instr. 4)		 7. Nature of Indirect Beneficial Ownership
(Instr. 4)
Amount (A) or (D) Price
Common Shares 12/21/2004   G 625 D $ (1) 17,719 D  
Common Shares             3,700 I By IRA
Common Shares             564 (2) I By 401(k)

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly. Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB control number. SEC 2270 (9-02)

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 3)		 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year) 3A. Deemed Execution Date, if any (Month/Day/Year) 4. Transaction Code
(Instr. 8)		 5. Number of Derivative Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4, and 5)		 6. Date Exercisable and Expiration Date
(Month/Day/Year)		 7. Title and Amount of Underlying Securities
(Instr. 3 and 4)		 8. Price of Derivative Security
(Instr. 5)		 9. Number of Derivative Securities Beneficially Owned at End of Issuer's Fiscal Year
(Instr. 4)		 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 4)		 11. Nature of Indirect Beneficial Ownership
(Instr. 4)
(A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares
Common Share Options               (4) 02/28/2010 Common Shares
 
  7,230
D
 
Phantom Shares (Deferred Compensation)               (6)   (6) Common Shares
 
  7,668
D
 
Phantom Shares (Deferred Compensation)               (7)   (7) Common Shares
 
  40,903
D
 

Reporting Owners

Reporting Owner Name / Address Relationships
Director 10% Owner Officer Other
BARRETTE RAYMOND JOSEPH RENE
C/O WHITE MOUNTAINS INSURANCE GROUP, LTD
80 SOUTH MAIN STREET
HANOVER, NH 03755		   X     President & CEO  

Signatures

Dennis Beaulieu, by Power of Attorney 02/04/2005
**Signature of Reporting Person Date

Explanation of Responses:

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1) Value of WTM Common Shares gifted based on the closing market price of WTM's Common Shares.
(2) Since December 20, 2004, the date of Reporting Person's last filing, Reporting Person acquired 1 share of WTM Common Shares under the Folksamerica 401(k) Plan. WTM Common Shares are purchased at fair market value on the date of purchase. The information in this report is based on a plan statement dated as of December 31, 2004.
(3) On February 28, 2000, the Reporting Person was granted options to purchase WTM Common Shares on a 1 for 1 basis at an initial price of $106.19. The exercise price increases by 6% annually on a cumulative basis.
(4) Reporting Person was originally granted 9,000 options to purchase WTM Common Shares on February 28, 2000. 900 options become exercisable annually over a ten-year period. 335 options were exercised on December 27, 2001 at an exercise price of $118.15, 1,000 options were exercised on December 30, 2002 at an exercise price of $125.30 and 435 options were exercised on December 20, 2004 at an exercise price of $140.75.
(5) Phantom Shares are convertible into Common Shares on a 1 for 1 basis.
(6) Payment of deferred compensation balances is due in cash on a predetermined Payment Schedule entered into in October 1999 by the Reporting Person.
(7) Phantom Shares are payable, at the election of the Company, in cash or in WTM Common Shares following termination of the Reporting Person's employment with the Company or beginning at an earlier date selected by the Reporting Person.

Note: File three copies of this Form, one of which must be manually signed. If space provided is insufficient, see Instruction 6 for procedure.

Potential persons who are to respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB number.