For Shareholders

HAMILTON, Bermuda, Feb 27, 2003 /PRNewswire-FirstCall via COMTEX/ -- White Mountains Insurance Group, Ltd. (NYSE: WTM) announced today that David Foy, 36, is joining the Company as Executive Vice President and Chief Financial Officer. Foy spent ten years with Hartford Life, where he was most recently Senior Vice President and Chief Financial Officer. He is a Fellow of the Society of Actuaries and a member of the American Academy of Actuaries.

White Mountains' President and CEO Ray Barrette said, "I am delighted to welcome someone with David's intelligence, energy and track record as a senior partner. He brings tremendous skills that will make our team even stronger. David's expertise in life insurance and related markets will expand our circle of competence and create new opportunities."

Foy is a graduate of the Rochester Institute of Technology where he obtained a B.S. in Applied Statistics in 1989. He started his career at Milliman & Robertson before joining Hartford Life. He will be located in White Mountains' offices in Guilford, CT.

ADDITIONAL INFORMATION

White Mountains is a Bermuda-domiciled financial services holding company traded on the New York Stock Exchange under the symbol WTM. Additional financial information and other items of interest are available at the Company's web site located at www.whitemountains.com.

Safe Harbor Statement under the Private Securities Litigation Reform Act of 1995

This press release may contain "forward-looking statements" within the meaning of Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934. All statements, other than statements of historical facts, included or referenced in this release which address activities, events or developments which we expect or anticipate will or may occur in the future are forward-looking statements. The words "believe," "intend," "expect," "anticipate," "project," "estimate," "predict" and similar expressions are also intended to identify forward-looking statements. These forward-looking statements include, among others, statements with respect to White Mountains':

    -- growth in book value per share or return on equity;
    -- business strategy;
    -- financial and operating targets or plans;
    -- incurred losses and the adequacy of its loss and loss adjustment
       expense reserves;
    -- projections of revenues, income (or loss), earnings (or loss) per
       share, dividends, market share or other financial forecasts;
    -- expansion and growth of its business and operations; and
    -- future capital expenditures.

These statements are based on certain assumptions and analyses made by White Mountains in light of its experience and perception of historical trends, current conditions and expected future developments, as well as other factors believed to be appropriate in the circumstances. However, whether actual results and developments will conform with its expectations and predictions is subject to a number of risks and uncertainties that could cause actual results to differ materially from expectations, including:

    -- the continued availability of capital and financing;
    -- general economic, market or business conditions;
    -- business opportunities (or lack thereof) that may be presented to it
       and pursued;
    -- competitive forces, including the conduct of other property and
       casualty insurers and reinsurers;
    -- changes in domestic or foreign laws or regulations applicable to White
       Mountains, its competitors or its  clients;
    -- an economic downturn or other economic conditions adversely affecting
       its financial position;
    -- loss reserves established subsequently proving to have been inadequate;
       and
    -- other factors, most of which are beyond White Mountains' control.

Consequently, all of the forward-looking statements made in this press release are qualified by these cautionary statements, and there can be no assurance that the actual results or developments anticipated by White Mountains will be realized or, even if substantially realized, that they will have the expected consequences to, or effects on, White Mountains or its business or operations. White Mountains assumes no obligation to update publicly any such forward-looking statements, whether as a result of new information, future events or otherwise.

    CONTACT:
     Dennis Beaulieu
     Tel:  802-295-4510

SOURCE White Mountains Insurance Group, Ltd.

CONTACT:          Dennis Beaulieu of White Mountains Insurance Group, Ltd, +1-802-
                  295-4510
                  /Web Site:  http://www.whitemountains.com
                  (WTM)

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