UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, DC 20549

FORM 8-K

Current Report
Pursuant to Section 13 OR 15(d) of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): June 28, 2005

ASPEN INSURANCE HOLDINGS LIMITED
(Exact name of registrant as specified in its charter)


Bermuda 001-31909 Not Applicable
(State or other jurisdiction
of incorporation)
(Commission
File Number)
(I.R.S. Employer
Identification No.)

Victoria Hall
11 Victoria Street
Hamilton HM 11
Bermuda

(Address of principal executive offices)
(Zip Code)

Registrant's telephone number, including area code: (441) 295-8201

Not Applicable

(Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

[    ]  Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)
[    ]  Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)
[    ]  Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))
[    ]  Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))



Section 7 — Regulation FD

Item 7.01    Regulation FD Disclosure

On June 28, 2005, Aspen Insurance Holdings Limited issued a press release updating its guidance with respect to estimated gross written premiums for 2005.

Section 9.    Financial Statements and Exhibits

Item 9.01 — Financial Statements and Exhibits

(c)    The following exhibit is furnished under Item 7.01 as part of this report:

99.1  Press Release of the Registrant, dated June 28, 2005.

The information furnished under Item 7.01 "Regulation FD Disclosure" shall not be deemed "filed" for purpose of Section 18 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), or incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such a filing.

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SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.


  ASPEN INSURANCE HOLDINGS LIMITED
  (Registrant)
Dated: June 28, 2005 By: /s/ Julian Cusack                                            
  Name:    Julian Cusack
Title:       Chief Financial Officer

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INDEX TO EXHIBITS


Exhibit No. Description
99.1 Press Release of the Registrant dated June 28, 2005.

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