AHL Aspen Insurance Holdings Limited Ordinary Shares

Aspen Insurance Holdings Limited (�Aspen�) (NYSE:AHL) will release its fourth quarter and year-end 2007 financial results on Wednesday, February 6, 2008, following the closing of the U.S. markets. The Company will hold a conference call to discuss its financial results on Thursday, February 7, 2008 at 9:30 a.m. (Eastern Time). The conference call will be webcast live in the �presentations� section of the Investor Relations page of Aspen's website, which is located at www.aspen.bm. The earnings press release and a detailed financial supplement will be posted to the website, as well as a brief slide presentation which may be used for reference during the earnings call. Chris O�Kane, Chief Executive Officer, and Richard Houghton, Chief Financial Officer, will review Aspen�s fourth quarter and year-end 2007 financial results. Following their review, questions will be taken from registered analysts and investors. The conference call is expected to last approximately one hour. Investors may participate in the live conference call by dialing 888-459-5609 (toll-free domestic U.S.) or 973-321-1024 (international); conference ID: 30154447. Please call to register at least 10 minutes before the conference call begins. A replay of the call will be available for 10 days via telephone starting immediately following the live call and can be accessed at 800-642-1687 (toll-free domestic U.S.) or 706-645-9291 (international); digital pin: 30154447. A replay will also be available for 10 days via Aspen�s website 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, the United States, the United Kingdom, and Switzerland. For the nine months ended September 30, 2007, Aspen reported gross written premiums of $1.5 billion, net income of $353.8 million and total assets of $7.3 billion. For more information about Aspen, please visit www.aspen.bm. Aspen's Ratings Aspen Insurance UK Limited Aspen Insurance Limited A (Strong) Standard & Poor's A (Strong) Standard & Poor's A (Excellent) A. M. Best A (Excellent) A. M. Best A2 (Good) Moody's A2 (Good) Moody's � Aspen Specialty Insurance Company A- (Excellent) A. M. Best