Re Rating Upgrade

Catlin Group Limited
01 October 2007


                    CATLIN REACTS TO UPGRADE IN A.M. BEST'S
                        OUTLOOK FOR CATLIN GROUP RATINGS


HAMILTON, Bermuda - Catlin Group Limited ('CGL': London Stock Exchange), the
international specialty property/casualty insurer and reinsurer, welcomes
today's announcement by A.M. Best Company to upgrade the outlook to stable from
negative on the ratings assigned to the Catlin Group and its subsidiaries.

In its announcement, A.M Best noted that the improved outlook reflects the
satisfactory resolution of the agency's concerns regarding integration risk
following Catlin's acquisition of Wellington Underwriting plc in December 2006.
A.M Best in its announcement noted that Catlin's financial results for the
period ended 30 June 2007 'reflect sustained strong performance' and that A.M.
Best expects Catlin 'to produce an excellent technical result at year-end 2007'.

Stephen Catlin, chief executive of Catlin Group Limited, said:

'I am delighted that A.M. Best has upgraded its outlook on the Catlin's ratings
to 'stable'. This action not only affirms our successful integration of 
Wellington's operations but also attests to Catlin's strong financial 
performance during the first half of 2007.'

The upgraded outlook applies to the financial strength ratings of 'A'
(Excellent) and issuer credit ratings of 'a' assigned by A.M. Best to Catlin
Bermuda, Catlin UK, and Catlin Insurance Company Inc. and Catlin Specialty
Insurance Company Inc. in the United States. In addition, A.M. Best has issued a
debt rating of 'bbb' to Catlin Bermuda's US$600 million in non-cumulative
preferred shares and an issuer credit rating of 'bbb' to Catlin Group Limited.
A.M. Best has separately assigned a financial strength rating of 'A' (Excellent)
to the Catlin Syndicate at Lloyd's (Syndicate 2003).

                                    - ends -

For more information contact:

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

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

Notes to editors:

1. Catlin Group Limited, headquartered in Bermuda, is an international 
specialist property/casualty insurer and reinsurer writing more than 30 classes 
of business worldwide through four underwriting platforms and an international 
network of offices. Gross premiums written in 2006 exceeded US$2.6billion. 
Catlin shares are traded on the London Stock Exchange (ticker symbol:CGL). More 
information about Catlin can be found at www.catlin.com.

2. Catlin's four underwriting platforms are:

   • The Catlin Syndicate at Lloyd's of London (Syndicate 2003), which is a
    recognised leader of numerous classes of specialty insurance and
    reinsurance. The Catlin Syndicate is the largest at Lloyd's in 2007 based on
    premium capacity of £1.25 billion.

   • Catlin Bermuda (Catlin Insurance Company Ltd.), which is a leading
    participant in the Bermuda market, underwriting a diversified portfolio of
    property treaty, casualty treaty, political risk and terrorism, and
    structured risk coverages.


   • Catlin UK (Catlin Insurance Company (UK) Ltd.), which specialises in
    underwriting commercial non-life insurance for UK clients through a network
    of regional offices. It also writes other classes of business written by the
    Catlin Syndicate.

   • Catlin US, which encompasses Catlin's operations based in the United
    States. Catlin US underwrites a wide variety of specialty property/casualty
    insurance and reinsurance products from a network of offices throughout the
    U.S. Catlin US includes Catlin Insurance Company Inc. and Catlin Specialty
    Insurance Company Inc.


3. Catlin's international network of offices allows the Group to diversify 
further its risk portfolio and to work more closely with local policyholders and
brokers. Besides its offices in the UK, US and Bermuda, Catlin operates offices 
in Canada, Australia, Singapore, Malaysia, Hong Kong, China, Guernsey, Germany, 
Belgium, France, Spain, Switzerland and Austria.




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            The company news service from the London Stock Exchange