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Aspen Insurance Holdings Limited (Aspen Holdings) is a holding company. The Company conducts insurance and reinsurance business through its wholly owned subsidiaries in three major jurisdictions: Aspen Insurance UK Limited (Aspen U.K.) and Aspen Underwriting Limited (AUL), a member of Syndicate 4711 at Lloyd's of London (United Kingdom), Aspen Bermuda (Bermuda) and Aspen Specialty Insurance Company (Aspen Specialty). Aspen U.K. also has branches in Paris, France, Zurich, Switzerland, Dublin, Ireland, Singapore, Australia and Canada. The Company operates in the global markets for property and casualty insurance and reinsurance. It manages its insurance and reinsurance businesses as two underwriting segments: Aspen Insurance and Aspen Reinsurance. Its insurance segment consists of primarily of the existing international insurance and United States insurance segments. Its reinsurance segment consists of three divisions, property reinsurance, casualty reinsurance and specialty reinsurance.