Hurricane update

Catlin Group Limited
01 December 2005


                                Hurricane Update

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

Catlin estimates its losses from Hurricane Wilma to be approximately US$45
million, net of reinsurance.

There has been no material change to the estimated net loss of approximately
US$60 million from Hurricane Rita previously advised to the market.

On 19 October 2005, Catlin affirmed its loss estimate for Hurricane Katrina of
US$275 million gross and US$125 million net of reinsurance. That estimate was
consistent with a market loss of US$40 billion. Since that time, little 
detailed loss information has emerged. However, anecdotal information, loss 
advices on individual inwards reinsurance contracts and the weight of market 
commentary suggest that the market loss is likely to exceed that amount.

Catlin's direct insurance losses with respect to Hurricane Katrina continue to
be within expectations, and significant reinsurance protection remains for 
those accounts. Loss details for the catastrophe reinsurance book, which is not
reinsured, remain incomplete. While the loss notifications received to date in
these classes are unsupported by detailed information or analysis, they have
been larger than initially anticipated. Catlin is therefore increasing its net
loss estimate for Hurricane Katrina by US$75 million to US$200 million.

Catlin's estimated net losses from Katrina, Rita and Wilma total approximately
US$305 million.

In spite of the unprecedented natural catastrophe losses during 2005, Catlin
remains optimistic that it will achieve a small profit for the year. This
demonstrates the strong underlying performance of Catlin's portfolio.

Stephen Catlin, chief executive, said:

'The global insurance industry has experienced an unprecedented level of losses
from Hurricanes Katrina, Rita and Wilma, which will create challenges for the
market. However, the net losses sustained by Catlin are broadly consistent with
our modelled assumptions for events of this magnitude.

'Catlin's balance sheet remains strong. This demonstrates the value in Catlin's
strategy of underwriting diverse classes of business and continually seeking
uncorrelated risk. As the year-end renewal season begins, we are ready to take
advantage of significantly improved underwriting opportunities across our
portfolio.'

                                    - ends -


For more information contact:

Media Relations:
James Burcke,                     Tel:        [phone]
Head of Communications, London    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]
London                            Mobile:     [phone]
                                  Email:      [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.




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