Impact of Hurricane Season

Catlin Group Limited
19 October 2005


                         CATLIN REVIEWS LOSS ESTIMATES
                        FROM HURRICANES KATRINA AND RITA

HAMILTON, Bermuda - Catlin Group Limited ('CGL': London Stock Exchange), the
international specialist property and casualty insurer and reinsurer, has
completed its initial review of loss estimates from Hurricane Rita and has
reviewed its loss estimates from Hurricane Katrina.

Catlin estimates that losses from Hurricane Rita will be of the order of US$90
million gross of reinsurance and US$60 million on a net basis. This estimate is
subject to considerable uncertainty and could be revised as further information
is received by the Group. Catlin has significant levels of reinsurance
protection remaining should the Group receive additional claims arising from
Hurricane Rita.

Catlin is not revising its 12 September 2005 estimate that losses arising from
Hurricane Katrina would be of the order of US$275 million gross of reinsurance
and US$125 million on a net basis. This estimate, which is still subject to
significant uncertainty, is consistent with an industry-wide loss of
approximately US$40 billion.

Based on these estimates, the combined losses to Catlin from Hurricanes Katrina
and Rita will be of the order of US$365 million gross of reinsurance and US$185
million on a net basis.

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

'Hurricane Katrina represents the largest insured loss in history, and Hurricane
Rita is a major catastrophe in its own right. In the light of these losses, we
are already seeing significant rate increases for numerous classes of insurance
and reinsurance, particularly those affected by the hurricanes.

'Despite the losses from the hurricanes, Catlin is in an excellent position to
take advantage of the significant underwriting opportunities that will arise
over the coming months.'


                                    - ends -


For more information contact:

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

Liz Morley,                             Tel:     [phone]
The Maitland Consultancy                E-mail:  [e-mail]

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


Notes:

1. The Catlin Group, headquartered in Bermuda, is an international specialist
   property/casualty insurer and reinsurer writing 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 currently operates three underwriting platforms:

   • The Catlin Syndicate at Lloyd's of London (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. Over the past 20 years, the Catlin
     Syndicate and its predecessors have consistently outperformed the Lloyd's
     market as a whole.

   • Catlin Bermuda (Catlin Insurance Company Ltd.). Catlin Bermuda
     underwrites 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 underwriting platforms have a financial strength rating of 
   'A'(Excellent) from A.M. Best Company.

   In addition, Catlin announced in September 2005 that it had reached an 
   agreement to purchase a shell insurance company which is an admitted insurer 
   in 27 US states. Subject to completion of the acquisition and regulatory 
   approval, this company will be renamed Catlin Insurance Company Inc. and 
   become the Group's fourth underwriting platform, writing property/casualty 
   coverage for US commercial clients that require coverage written on an 
   admitted basis.

   The Catlin Group also has established offices in the US, UK, Guernsey, 
   Canada, Germany, Belgium, Singapore, Malaysia and Australia. These offices, 
   which underwrite on behalf of Catlin's underwriting platforms, allow Catlin 
   to work more closely with local clients and their brokers.

3. More information about Catlin can be found on the Group's website:
   www.catlin.com.


                      This information is provided by RNS
            The company news service from the London Stock Exchange