FTSE Investability W. change

Catlin Group Limited
09 June 2005


            STATEMENT REGARDING INCREASE IN INVESTABILITY WEIGHTING

HAMILTON, Bermuda - FTSE International announced on Wednesday that the
Investability Weighting in the FTSE 250 Index for Catlin Group Limited ('CGL':
London Stock Exchange) will increase from 40 per cent to 75 per cent, effective
20 June 2005.

This decision follows significant recent changes in the composition of Catlin's
share register, including market sales by several of the Group's pre-IPO equity
investors. As a result of these changes, Catlin's free-float has substantially
increased.

Stephen Catlin, Chief Executive of the Catlin Group, said:

'The Catlin Group has continued to generate strong results since becoming a
public company, and we hope that the increasing liquidity will make it easier
for investors to acquire the Group's shares.'

For more information contact:

Media Relations:
James Burcke, 
Head of Communications                 Tel:       [phone]
                                       Mobile:    [phone]
                                       E-mail:    [e-mail]
Liz Morley,
The Maitland Consultancy               Tel:       [phone]
                                       E-mail     [e-mail]

Investor Relations:
William Spurgin, 
Head of Investor Relations             Tel:       [phone]
                                       Mobile:    [phone]
                                       Email:     [e-mail]

Notes to editors:

1.  Catlin Group Limited, headquartered in Bermuda, is an international
    specialist property/casualty insurer and reinsurer underwriting more than 
    30 classes of business worldwide. Catlin wrote gross premiums of US$1.43 
    billion and reported record net income of US$154.1 million in 2004. Catlin 
    shares are traded on the London Stock Exchange (ticker symbol: 'CGL').

2.  The Catlin Group operates three underwriting platforms:

    • The Catlin Syndicate at Lloyd's (Syndicate 2003). The Catlin Syndicate
    is the eighth largest syndicate at Lloyd's based on 2005 premium capacity 
    of £500 million. It is a recognised leader of numerous classes of specialty
    insurance and reinsurance.

    • Catlin Bermuda (Catlin Insurance Company Ltd.). Catlin Bermuda began
    underwriting in 2002 and writes property treaty and casualty treaty
    reinsurance and property and casualty insurance for US risks on a surplus
    lines basis.

    • Catlin UK (Catlin Insurance Company (UK) Ltd.). Catlin UK specialises in
    writing commercial property, general liability, professional indemnity,
    directors' and officers' liability and commercial crime insurance for UK
    clients. It also writes other classes of business written by the Catlin
    Syndicate.

    All three Catlin Group underwriting platforms have been assigned 'A' 
    (Excellent)financial strength ratings by A.M. Best Company.

    The Catlin Group also operates subsidiaries located in Houston and New 
    Orleans in the US, as well as in the UK, Canada, Germany, Belgium, 
    Singapore, Malaysia and Australia. These subsidiaries allow Catlin to work 
    more closely with local clients and their brokers.

3.  The Catlin Group's website can be found at www.catlin.com.



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