-----BEGIN PRIVACY-ENHANCED MESSAGE----- Proc-Type: 2001,MIC-CLEAR Originator-Name: webmaster@www.sec.gov Originator-Key-Asymmetric: MFgwCgYEVQgBAQICAf8DSgAwRwJAW2sNKK9AVtBzYZmr6aGjlWyK3XmZv3dTINen TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB MIC-Info: RSA-MD5,RSA, HvYrEMqCPWuLvdowE69xeI0z2I0LoT8H0NPoR6G7+BFKjrfnPTPanriUxvbNRDV/ OCFCteJf6FG4p+0qKHr2aQ== 0001047469-06-009009.txt : 20060628 0001047469-06-009009.hdr.sgml : 20060628 20060628171430 ACCESSION NUMBER: 0001047469-06-009009 CONFORMED SUBMISSION TYPE: FWP PUBLIC DOCUMENT COUNT: 1 FILED AS OF DATE: 20060628 DATE AS OF CHANGE: 20060628 GROUP MEMBERS: TA I LIMITED GROUP MEMBERS: TA II LIMITED GROUP MEMBERS: TA III LIMITED GROUP MEMBERS: TA IV LIMITED GROUP MEMBERS: TRINITY ACQUISITION LIMITED GROUP MEMBERS: WILLIS GROUP LIMITED SUBJECT COMPANY: COMPANY DATA: COMPANY CONFORMED NAME: WILLIS NORTH AMERICA INC CENTRAL INDEX KEY: 0001081003 STANDARD INDUSTRIAL CLASSIFICATION: INSURANCE AGENTS BROKERS & SERVICES [6411] IRS NUMBER: 135654526 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: FWP SEC ACT: 1934 Act SEC FILE NUMBER: 333-135176-01 FILM NUMBER: 06930819 BUSINESS ADDRESS: STREET 1: 26 CENTURY BOULEVARD STREET 2: P O BOX 305026 CITY: NASHVILLE STATE: TN ZIP: 37214 BUSINESS PHONE: 6158723000 MAIL ADDRESS: STREET 1: 26 CENTURY BOULEVARD STREET 2: P O BOX 305026 CITY: NASHVILLE STATE: TN ZIP: 37214 FORMER COMPANY: FORMER CONFORMED NAME: WILLIS CORROON CORP DATE OF NAME CHANGE: 19990302 FILED BY: COMPANY DATA: COMPANY CONFORMED NAME: WILLIS GROUP HOLDINGS LTD CENTRAL INDEX KEY: 0001140536 STANDARD INDUSTRIAL CLASSIFICATION: INSURANCE AGENTS BROKERS & SERVICES [6411] IRS NUMBER: 000000000 STATE OF INCORPORATION: D0 FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: FWP BUSINESS ADDRESS: STREET 1: TEN TRINITY SQUARE CITY: LONDON ENGLAND STATE: X0 ZIP: 00000 BUSINESS PHONE: 0114402074 MAIL ADDRESS: STREET 1: TEN TRINITY SQUARE CITY: LONDON ENGLAND STATE: X0 ZIP: 00000 FWP 1 a2171554zfwp.htm FWP
QuickLinks -- Click here to rapidly navigate through this document

Filed Pursuant to Rule 433
Registration Statement No. 333- 135176
June 27, 2006


Willis North America Inc.

Pricing Term Sheet


Issuer:
 
Willis North America Inc.

Guarantors:
 
Willis Group Holdings Limited

 
 
TA I Limited

 
 
TA II Limited

 
 
TA III Limited

 
 
Trinity Acquisition Limited

 
 
TA IV Limited

 
 
Willis Group Limited

Size:
 
$300,000,000

Maturity:
 
July 15, 2016

Coupon:
 
6.750%

Price:
 
99.564% of face amount

Yield to maturity:
 
6.810%

Interest Payment Dates:
 
January 15 and July 15, commencing January 15, 2007

Optional redemption:
 
At any time, in whole or in part, at a redemption price equal to the greater of 100% of the principal amount of the notes being redeemed and the remaining principal and interest payments on the notes being redeemed discounted at the applicable Treasury Rate plus 25 bps.

Settlement:
 
T+3; June 30, 2006

CUSIP:
 
970648 AC 5

Ratings:
 
Baa2 (Moody's); BBB- (S&P);

Note: A securities rating is not a recommendation to buy, sell or hold securities and may be subject to revision or withdrawal at any time.

The issuer has filed a registration statement (including a prospectus) with the SEC for the offering to which this communication relates. Before you invest, you should read the prospectus in that registration statement and other documents the issuer has filed with the SEC for more complete information about the issuer and this offering. You may get these documents for free by visiting EDGAR on the SEC Web site at www.sec.gov. Alternatively, the issuer, any underwriter or any dealer participating in the offering will arrange to send you the prospectus if you request it by calling Citigroup Global Markets Inc. toll-free at 1-877-858-5407 or J.P. Morgan Securities Inc. collect at 1-212-834-4533.



QuickLinks

Willis North America Inc. Pricing Term Sheet
 -----END PRIVACY-ENHANCED MESSAGE-----