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Aspen to Announce Q2 2014 Earnings on July 23, 2014

23 June 2014

Hamilton, Bermuda – 23 June, 2014 – Aspen Insurance Holdings Limited (“Aspen” or the “Company”; Ticker: NYSE:AHL; BSX: AHL.BH) will release its second quarter 2014 financial results on Wednesday, July 23, 2014, following the close of the New York Stock Exchange. A conference call to discuss the results will follow at 9:00am (ET) on Thursday, July 24, 2014.

To participate in the July 24 conference call by phone:

Please call to register at least 10 minutes before the conference call begins, dialling:

+1 (888) 459 5609 (US toll free)

+1 (404) 665 9920 (international)

Conference ID 60476327

To listen live online:

Aspen will provide a live webcast on the Aspen website.

To download the materials:

The earnings press release and a detailed financial supplement will also be published on the website.

To listen later:

A replay of the call will be available approximately two hours after the end of the live call for 14 days via phone and internet. To listen to the replay by phone please dial:

+1 (855) 859 2056 (US toll free)

+1 (404) 537 3406 (international)

Replay ID 60476327

The recording will be also available at www.aspen.co

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, Germany, Ireland, Singapore, Switzerland, the United Kingdom and the United States. For the year ended December 31, 2013, Aspen reported $10.2 billion in total assets, $4.7 billion in gross reserves, $3.3 billion in shareholders’ equity and $2.6 billion in gross written premiums. Its operating subsidiaries have been assigned a rating of “A” (“Strong”) by Standard & Poor’s, an “A” (“Excellent”) by A.M. Best and an “A2” (“Good”) by Moody’s.

For further information please visit www.aspen.co or contact:

Investors

Kerry Calaiaro, Senior Vice President, Investor Relations, Aspen

Kerry.Calaiaro@aspen.co

+1 646 502 1076

Kathleen de Guzman, Vice President, Investor Relations, Aspen

Kathleen.deGuzman@aspen.co

+1 646 289 4912

Media

Steve Colton, Head of Communications, Aspen

Steve.Colton@aspen.co

+44 20 7184 8337