Towers Watson and Willis Together Rocket fuel for Global Benefit Solutions July 2015 FOR INTERNAL TW USE ONLY

This is good news! Together we are stronger And will be more successful

We both complement . . . Area Towers Watson Willis Local NA: Puerto Rico EMEA: UAE & UK AP: Philippines & Thailand LATAM: Venezuela, Peru EMEA: Austria, Belgium, Denmark, Norway, Poland, Sweden, Russia, & much of Africa AP: Australia, China, Myanmar, New Zealand, Vietnam Global Global 1000 HQ relationships BDS GBC Liazon (GA & BM) GHGB central resources Many multi-country appointments Captive management

. . . And supplement the other’s capabilities LATAM EMEA AP Argentina Brazil Chile Colombia Mexico France Germany Ireland Italy Netherlands Spain Switzerland Turkey Portugal Hong Kong India Indonesia Japan Singapore South Korea Taiwan Coverage in more than 130 countries

The opportunities are real and exciting Increased ability to meet client needs Increased credibility with insurance carriers Higher close rate for global, regional, multi-country and local appointments Better associate growth opportunities

And the risks are under our control Becoming internally focused Not delivering for clients Losing talent because of squabbling

What next? For right now, things are business as usual We are exploring our correspondence partnership approach for countries where we do not have licenses Get back to our day jobs so we can have a running start

Where You Can Find Additional Information In connection with the proposed merger of Towers Watson and Willis Group, Willis Group will file a registration statement on Form S-4 with the Securities and Exchange Commission (the “Commission”) that will contain a joint proxy statement/prospectus and other relevant documents concerning the proposed transaction. YOU ARE URGED TO READ THE JOINT PROXY STATEMENT/PROSPECTUS WHEN IT BECOMES AVAILABLE AND THE OTHER RELEVANT DOCUMENTS FILED WITH THE COMMISSION BECAUSE THEY WILL CONTAIN IMPORTANT INFORMATION ABOUT TOWERS WATSON, WILLIS GROUP AND THE PROPOSED TRANSACTION. You will be able to obtain the joint proxy statement/prospectus (when it becomes available) and the other documents filed with the Commission free of charge at the Commission’s website, www.sec.gov. In addition, you may obtain free copies of the joint proxy statement/prospectus (when it becomes available) and the other documents filed by Towers Watson and Willis Group with the Commission by requesting them in writing from Towers Watson, 901 N. Glebe Road, Arlington, VA 22203, Attention: Investor Relations, or by telephone at (703) 258-8000, or from Willis Group, Brookfield Place, 200 Liberty Street, 7th Floor, New York, NY 10281-1003, Attention: Peter Poillon, Investor Relations, or by telephone at (212) 915-8084. Towers Watson and Willis Group and their respective directors and executive officers may be deemed under the rules of the Commission to be participants in the solicitation of proxies. Information about Towers Watson’s directors and executive officers and their ownership of Towers Watson common stock is set forth in Towers Watson’s proxy statement on Schedule 14A filed on October 3, 2014 with the Commission. Information about Willis Group’s directors and executive officers and their ownership of Willis Group common stock is set forth in Willis Group proxy statement on Schedule 14A filed on April 17, 2015 with the Commission. Information regarding the identity of the potential participants, and their direct or indirect interests in the transaction, by security holdings or otherwise, will be contained in the joint proxy statement/prospectus and other materials when they are filed with the Commission. Forward-Looking Statements This document contains “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. You can identify these statements and other forward-looking statements in this document by words such as “may”, “will”, “would”, “expect”, “anticipate”, “believe”, “estimate”, “plan”, “intend”, “continue”, or similar words, expressions or the negative of such terms or other comparable terminology. These statements include, but are not limited to, the benefits of the business combination transaction involving Towers Watson and Willis Group, including the combined company’s future financial and operating results, plans, objectives, expectations and intentions and other statements that are not historical facts. Such statements are based upon the current beliefs and expectations of Towers Watson’s and Willis Group’s management and are subject to significant risks and uncertainties. Actual results may differ from those set forth in the forward-looking statements. The following factors, among others, could cause actual results to differ from those set forth in the forward-looking statements: the ability to obtain governmental approvals of the transaction on the proposed terms and schedule; the failure of Towers Watson stockholders and Willis Group shareholders to approve the transaction; the failure of the transaction to close for any reason; the risk that the businesses will not be integrated successfully; the risk that anticipated cost savings and any other synergies from the transaction may not be fully realized or may take longer to realize than expected; the potential impact of the announcement or consummation of the proposed transaction on relationships, including with employees, suppliers, customers and competitors; changes in general economic, business and political conditions, including changes in the financial markets; significant competition; compliance with extensive government regulation; the combined company’s ability to make acquisitions and its ability to integrate or manage such acquired businesses. Additional risks and factors are identified under “Risk Factors” in Towers Watson’s Annual Report on Form 10-K filed on August 15, 2014, which is on file with the Commission, and under “Risk Factors” in the joint proxy statement/prospectus when it is filed with the Commission. You should not rely upon forward-looking statements as predictions of future events because these statements are based on assumptions that may not come true and are speculative by their nature. Neither Towers Watson or Willis Group undertakes an obligation to update any of the forward-looking information included in this document, whether as a result of new information, future events, changed expectations or otherwise.