Aspen Declares Dividends on Ordinary Shares, Perpetual PIERS and Perpetual Preference Shares

Aspen Insurance Holdings Limited (the “Company”) (NYSE:AHL) today announced that its Board of Directors declared a quarterly cash dividend on its ordinary shares of US$0.15 per ordinary share. The dividend is payable on May 31, 2011 to the holders of record as of the close of trading on May 13, 2011.

The Company’s Board of Directors also declared a cash dividend on its Perpetual Preferred Income Equity Replacement Securities (“Perpetual PIERS”) of US$0.703125 per Perpetual PIERS. The dividend is payable on July 1, 2011 to the holders of record as of the close of business on June 15, 2011.

The Company’s Board of Directors declared a dividend on the 7.401% Perpetual Non-Cumulative Preference Shares (“Perpetual Preference Shares”) of US$0.462563 per Perpetual Preference Share, payable on July 1, 2011 to the holders of record as of the close of business June 15, 2011.

About Aspen Insurance Holdings Limited

The Company 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 twelve months ended December 31, 2010, the Company reported gross written premiums of $2,076.8 million, net income of $312.7 million and total assets of $8.8 billion. Its operating subsidiaries have been assigned a financial strength rating of “A” (“Strong”) by Standard & Poor's, an “A” (“Excellent”) by A.M. Best and an “A2” (“Good”) by Moody's Investors Service.