Willis Group Chairman and CEO Completes 10b5-1 Plan Share Trading for 2005

Business Wire, June 29, 2005

NEW YORK -- Willis Group Holdings Limited (NYSE:WSH) the global insurance broker, today announced that Joe Plumeri, its Chairman and Chief Executive Officer, has completed share trading for 2005 under his previously announced personal trading plan in accordance with guidelines specified by Rule 10b5-1 under the Securities Exchange Act of 1934. The shares were sold for personal financial planning purposes and the prudent diversification of Mr. Plumeri's assets.

With the selling of 1.6 million shares of Willis Group common stock authorized for sale under the plan now complete, Mr. Plumeri continues to hold approximately 3 million shares and options of Willis common stock.

Rule 10b-51 permits insiders to sell fixed portions of their holdings over a designated period of time by establishing pre-arranged written plans at a time when they are not in possession of material non-public information.

Willis Group Holdings Limited is a leading global insurance broker, developing and delivering professional insurance, reinsurance, risk management, financial and human resource consulting and actuarial services to corporations, public entities and institutions around the world. With over 300 offices in some 80 countries, its global team of 14,500 associates serves clients in some 180 countries. Additional information on Willis may be found on its web site www.willis.com.

This press release may contain certain statements relating to future results, which are forward-looking statements as that term is defined in the Private Securities Litigation Reform Act of 1995. These forward-looking statements are subject to certain risks and uncertainties that could cause actual results to differ materially from historical results or those anticipated, depending on a variety of factors such as general economic conditions in different countries around the world, fluctuations in global equity and fixed income markets, changes in premium rates, the competitive environment and the actual cost of resolution of contingent liabilities. Further information concerning the Company and its business, including factors that potentially could materially affect the Company's financial results, are contained in the Company's filings with the Securities and Exchange Commission.