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| NAME OF SUBSIDIARY | JURISDICTION OF INCORPORATION | |
| Acorn Limited | Bermuda | |
| Aspen Bermuda Limited | Bermuda | |
| Aspen Capital Management, Ltd | Bermuda | |
| Aspen Cat Fund Limited | Bermuda | |
| Peregrine Reinsurance Ltd | Bermuda | |
| Silverton Re Ltd. | Bermuda | |
| Aspen Insurance UK Limited | United Kingdom | |
| Aspen (UK) Holdings Limited | United Kingdom | |
| Aspen (US) Holdings Limited | United Kingdom | |
| Aspen European Holdings Limited | United Kingdom | |
| Aspen Insurance UK Services Limited | United Kingdom | |
| AIUK Trustees Limited | United Kingdom | |
| Aspen Risk Management Limited | United Kingdom | |
| Aspen Managing Agency Limited | United Kingdom | |
| Aspen Underwriting Limited | United Kingdom | |
| Aspen UK Syndicate Services Limited | United Kingdom | |
| Aspen Recoveries Limited | United Kingdom | |
| APJ Asset Protection Jersey Limited | Jersey | |
| Aspen Specialty Insurance Solutions LLC | California | |
| Aspen U.S. Holdings, Inc. | Delaware | |
| Aspen Capital Advisors Inc. | Delaware | |
| Aspen Insurance U.S. Services Inc. | Delaware | |
| Aspen Re America, Inc. | Delaware | |
| Aspen Specialty Insurance Management, Inc. | Massachusetts | |
| Aspen Specialty Insurance Company | North Dakota | |
| Aspen American Insurance Company | Texas | |
| Aspen Singapore Pte. Ltd. | Singapore | |
| Blue Waters Insurers, Corp. | Puerto Rico | |
| Aspen Insurance Ireland Holdings Limited | Ireland | |