Aspen Insurance Holdings Limited (AHL-PC) IRANNOTICE Disclosure regarding Iran Threat Reduction and Syria Human Rights Act

May 8, 2019

Michael Cain

Group General Counsel

United States Securities and Exchange Commission

100 F Street, N.E.

Washington, DC 20549

Re: Notice Pursuant to Section 13(r) of the Securities Exchange Act of 1934, as amended (the “Act”)

Ladies and Gentlemen:

Aspen Insurance Holdings Limited (the “Issuer”) hereby provides notice that disclosure of potential activity described in Section 13(r) of the Act has been included in the Issuer’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2019, which was filed with the U.S. Securities and Exchange Commission on May 8, 2019.

Respectfully submitted,

Aspen Insurance Holdings Limited

By:     /s/ Michael Cain

Name:     Michael Cain

Title:     Group General Counsel and Assistant Company Secretary