Major Interest in Shares

Catlin Group Limited
21 August 2007



TR-1: NOTIFICATION OF MAJOR INTERESTS IN SHARES


1.  Identity of the issuer or the underlying issuer of existing shares to which
    voting rights are attached:

    Catlin Group Limited


2.  Reason for the notification (please place an X inside the appropriate 
    bracket /s):

    An acquisition or disposal of voting rights: ( X )

    An acquisition or disposal of financial instruments which may result in the
    acquisition of shares already issued to which voting rights are 
    attached: (    )

    An event changing the breakdown of voting rights: ( )

    Other (please specify) : (    )


3.  Full name of person(s) subject to the notification obligation:

    Fidelity International Limited (FIL)


4.  Full name of shareholder(s) (if different from 3.) :

    Bank of New York Brussels - 123,107
    BNP Paribas, Paris - 12,000
    BNP Paribas, Paris (C) - 6,200
    Brown Bros Harrimn Ltd Lux - 1,307,707
    Brown Brothers Harriman and Co - 16,000
    Chase Manhattan Bank AG Frankfurt - 15,000
    HSBC Bank plc - 325,871
    HSBC Trinkaus Und Burkh AG - 12,500
    JP Morgan, Bournemouth - 720,653
    JP Morgan, Bournemouth - 1,834,142
    JP Morgan, Bournemouth - 6,448,609
    JP Morgan, Bournemouth - 217,064
    Morgan Stanley London -134,782
    Norddeutsche Landersbank - 12,000
    Northern Trust London - 119,900
    Northern Trust London - 1,029,685
    State Str Bk and Tr Co LNDN - 31,300
    State Str Bk and Tr Co LNDN - 132,230
    State Street Hong Kong - 59,000


5.  Date of the transaction (and date on which the threshold is crossed
    or reached if different):

    17 August 2007


6.  Date on which issuer notified:

    20 August 2007


7.  Threshold(s) that is/are crossed or reached:

    5%


8.  Notified details:

    A: Voting rights attached to shares

    Class/type of shares if possible using the       Situation previous to the Triggering
    ISIN CODE                                                    transaction

    ISIN                                          Number of shares  Number of voting Rights

    BMG196F11004                                  12,654,550         12,654,550

    Resulting situation after the triggering transaction

    Class/type of shares if   Number of shares      Number of voting rights            % of voting rights
    possible using the ISIN
    CODE
    ISIN                      Direct                Direct        Indirect             Direct      Indirect

    BMG196F11004                                                  12,558,250                       4.96%

    B: Financial Instruments

    Resulting situation after the triggering transaction

    Type of        Expiration Date      Exercise/Conversion      Number of voting rights   % of voting rights
    financial                           Period/ Date             that may be acquired if
    instrument                                                   the instrument is
                                                                 exercised/ converted.

    Total (A+B)
    Number of voting rights     % of voting rights

    12,558,250                   4.96%


9.  Chain of controlled undertakings through which the voting rights and/or the
    financial instruments are effectively held, if applicable :

    Bank of New York Brussels - 123,107
    BNP Paribas, Paris - 12,000
    BNP Paribas, Paris (C) - 6,200
    Brown Bros Harrimn Ltd Lux - 1,307,707
    Brown Brothers Harriman and Co - 16,000
    Chase Manhattan Bank AG Frankfurt - 15,000
    HSBC Bank plc - 325,871
    HSBC Trinkaus Und Burkh AG - 12,500
    JP Morgan, Bournemouth - 720,653
    JP Morgan, Bournemouth - 1,834,142
    JP Morgan, Bournemouth - 6,448,609
    JP Morgan, Bournemouth - 217,064
    Morgan Stanley London -134,782
    Norddeutsche Landersbank - 12,000
    Northern Trust London - 119,900
    Northern Trust London - 1,029,685
    State Str Bk and Tr Co LNDN - 31,300
    State Str Bk and Tr Co LNDN - 132,230
    State Street Hong Kong - 59,000

Proxy Voting:

10. Name of the proxy holder:

    Fidelity International Limited (FIL)


11. Number of voting rights proxy holder will cease to hold:
 
    96,300 shares disposed


12. Date on which proxy holder will cease to hold voting rights:

    17 August 2007


13. Additional information:

    N/A


14. Contact name:

    William Spurgin


15. Contact telephone number:

    020 7626 0486




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