Aspen Releases Q4 And Full Year 2011 Results (Excerpt)

Hamilton, Bermuda – 07 February, 2012 – Aspen Insurance Holdings Limited (“Aspen” or the “Company”; Ticker: NYSE:AHL; BSX: AHL.BH) reported net income after tax of $13.5 million, or $0.11 per diluted share, for the fourth quarter of 2011. For the full year 2011, net loss after tax was $105.8 million, or $1.82 per diluted share. Performance in Aspen’s insurance segment was strong, a result of significant growth in certain niche areas and improvement across a number of lines. Reinsurance results were materially impacted by a high frequency and severity of natural catastrophes in 2011, which were partially offset by a good performance in casualty and specialty reinsurance lines.

Chris O’Kane, Chief Executive Officer commented, “A combination of natural catastrophes and global economic uncertainty made 2011 a very difficult year for our industry. Aspen reported an operating loss of $1.26 per share and a book value of $38.43 per share for 2011, down 1.2% from year end 2010.

“Whilst the performance of our catastrophe exposed reinsurance lines has been impacted by the near record year for natural catastrophes, both our casualty and specialty reinsurance units generated good results in a challenging environment. In our Insurance segment our loss ratios were good to excellent in most classes. The recent January renewals saw attractive rate increases in certain property catastrophe reinsurance lines and encouraging signs in many commercial insurance lines. Our strong capital base and diversified model leave us well positioned to benefit from the improving pricing trend and the investment we have made in our franchise.”

The full text of this press release can be found at www.aspen.bm

About Aspen Insurance Holdings Limited

Aspen provides reinsurance and insurance coverage to clients in various domestic and global markets through wholly-owned subsidiaries and offices in Bermuda, France, Germany, Ireland, Singapore, Switzerland, the United Kingdom and the United States. For the year ended December 31, 2011, Aspen reported gross written premiums of $2,207.8 million, net loss of $105.8 million and total assets of $9.5 billion. Its operating subsidiaries have been assigned a rating of “A” (“Strong”) by Standard & Poor’s (“S&P”), an “A” (“Excellent”) by A.M. Best and an “A2” (“Good”) by Moody’s Investors Service (“Moody’s”).

For more information about Aspen, please visit www.aspen.co.

For further information please contact

Investors:

Kerry Calaiaro, Senior Vice President, Investor Relations, Aspen

Kerry.Calaiaro@aspen.co                  +1 646 502 1076

Media:

Tim Dickenson, Global Head of Communications, Aspen

Tim.Dickenson@aspen.co                 +44 20 7184 8034

Europe and Asia:

Citigate Dewe Rogerson, Justin Griffiths

Justin.Griffiths@citigatedr.co.uk        +44 20 7638 9571

North America:

Abernathy MacGregor, Allyson Morris

amv@abmac.com                              +1 212 371 5999