AHL Aspen Insurance Holdings Limited Ordinary Shares

Aspen Insurance UK Limited (�Aspen Re�), a subsidiary of Aspen Insurance Holdings Limited (NYSE:AHL), announced that it was named �Best Global Reinsurance Company for Specialty Lines� by Reactions magazine for the second consecutive year. The Reactions Awards recognise and reward corporate and individual achievers in the insurance and reinsurance markets. Each year the readership of Reactions magazine is polled to assess which firms, deals and initiatives, as well as industry figures, have outperformed. Aspen was presented with the award for Best Global Reinsurance Company for Specialty Lines, at the Reactions Global Insurance Awards�reception in New York on August 26, 2008. Tom Meyer, Underwriter in Aspen�s Specialty Reinsurance team, collected the award for Aspen. Commenting on the award, Chris O�Kane, Chief Executive Officer of Aspen Insurance Holdings Limited, said: �I am particularly pleased that Aspen has been recognised with this award for two years running, as it reflects our long-standing commitment to deliver the best products and services to our clients.� 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, Ireland, the United States, the United Kingdom, Singapore and Switzerland. For the six months ended June 30, 2008, Aspen reported gross written premiums of $1,125.0 million, net income of $208.1 million and total assets of $7.5 billion. For more information about Aspen, please visit www.aspen.bm.