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): July 27, 2005

                          Willis Group Holdings Limited
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             (Exact Name of Registrant as Specified in Its Charter)

                                     Bermuda
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                 (State or Other Jurisdiction of Incorporation)

          001-16503                                    98-0352587
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    (Commission File Number)               (IRS Employer Identification No.)

                            c/o Willis Group Limited
                               Ten Trinity Square
                            London EC3P 3AX, England
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                    (Address of Principal Executive Offices)

                               (44) (20) 7488-8111
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              (Registrant's Telephone Number, Including Area Code)

                                 Not Applicable
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          (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 (see General Instruction A.2. below):

|_|  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))




Item 8.01 Other Events

On July 27, 2005 Willis Group Holdings Limited issued a press release announcing
that the Board of Directors approved an increase in the Company's existing
common share buyback authorization from $300 million to $500 million. The press
release is attached as Exhibit 99.1 hereto.

Item 9.01. Financial Statements and Exhibits.

      (c)  Exhibits.

           99.1 Press Release of WGHL dated July 27, 2005




                                   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.

                                                  WILLIS GROUP HOLDINGS LIMITED


Date: July 27, 2005                               By: /s/ William P. Bowden, Jr.
                                                      --------------------------
                                                  Name:  William P. Bowden, Jr.
                                                  Title: General Counsel




                                  EXHIBIT INDEX


  Exhibit No.               Description
  -----------               -----------

  99.1                      Press Release of WGHL dated July 27, 2005