Allied World Assurance FWP Free writing prospectus

Filed Pursuant to Rule 433
Registration No. 333-135464

The issuer has filed a Market-Making Prospectus with the U.S. Securities and Exchange Commission (SEC) for the public offering of the issuer’s 7.50% senior notes due 2016, which closed on July 26, 2006. Goldman, Sachs & Co. is continuing to make a market in the senior notes pursuant to the Market-Making Prospectus. Before you invest in the issuer’s senior notes, you should read the Market-Making Prospectus and other documents the issuer has filed with the SEC for more complete information about the issuer and an investment in its senior notes. You may get these documents for free by visiting EDGAR on the SEC Web site at www.sec.gov. Alternatively, you may obtain a copy of the Market-Making Prospectus if you so request by calling Goldman, Sachs & Co. toll-free at 1-866-471-2526.

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K/A

(Amendment No. 1)

CURRENT REPORT
Pursuant to Section 13 or 15(d) of the
Securities Exchange Act of 1934

Date of Report (Date of Earliest Event Reported): March 14, 2007

ALLIED WORLD ASSURANCE COMPANY HOLDINGS, LTD

(Exact name of registrant as specified in its charter)

Bermuda	001-32938	98-0481737
(State or other jurisdiction	(Commission	(I.R.S. Employer
of incorporation)	File Number)	Identification No.)

27 Richmond Road,
Pembroke, HM 08
(Address of principal executive offices)(Zip Code)

Registrant’s telephone number, including area code: 441-278-5400

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:

o Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

o Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

o Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

o Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Item 5.02 Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers.

As previously reported in a Form 8-K filed with the SEC on November 15, 2006, the Board of Directors of Allied World Assurance Company Holdings, Ltd (the “Company”) announced the appointment of Philip D. DeFeo as a director effective November 10, 2006. At such time, Mr. DeFeo was not appointed to any committees of the Company’s Board of Directors.

At the recommendation of the Nominating & Corporate Governance Committee of the Board of Directors, on March 14, 2007, Mr. Defeo was appointed to serve as a member of the Nominating & Corporate Governance Committee and the Compensation Committee of the Board of Directors of the Company.

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.

	Allied World Assurance Company Holdings, Ltd
March 19, 2007	By:	/s/ Wesley D. Dupont
		Name: Wesley D. Dupont
		Title: Senior Vice President and General Counsel