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

Business Wire, July 26, 2007

HAMILTON, Bermuda -- Aspen Insurance Holdings Limited (the "Company") (NYSE:AHL) today announced that its Board of Directors on July 26, 2007 declared a quarterly cash dividend on its ordinary shares of US$0.15 per ordinary share. The dividend is payable on August 17, 2007 to the holders of record as of the close of trading on August 7, 2007.

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 PIER. The dividend is payable on October 1, 2007 to the holders of record as of the close of business on September 15, 2007.

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 October 1, 2007 to the holders of record as of the close of business on September 15, 2007.

About Aspen Insurance Holdings Limited

Aspen Insurance Holdings Limited was established in June 2002. Aspen is a Bermudian holding company that provides property and casualty reinsurance in the global market, property and liability insurance principally in the United Kingdom and the United States and specialty insurance and reinsurance consisting mainly of marine and energy and aviation worldwide. Aspen's operations are conducted through its wholly-owned subsidiaries located in London, Bermuda and the United States: Aspen Insurance UK Limited, Aspen Insurance Limited and Aspen Specialty Insurance Company. Aspen has four operating segments: property reinsurance, casualty reinsurance, specialty insurance and reinsurance and property and casualty insurance. For more information about Aspen, please visit the Company's website at www.aspen.bm.