Willis

New York, NY, August 10, 2009 – Willis Aerospace, a division of Willis Group Holdings (NYSE:WSH), the global insurance broker, has made another key appointment to its global aviation team by naming Stephen Kisor Executive Vice President and Head of the Willis Aviation office in Los Angeles. Kisor, who will be joining Willis from Aon, will report to Garrett Hanrahan, Chief Executive Officer of Global Aviation in North America.

Kisor’s appointment is one of a number of strategic new hires to the Willis Aviation team. These include Hanrahan, who joined Willis from Aon in 2008; Steve Ogden, a Senior Client Advocate in London, who will be joining from Marsh later this year; and Neil Getter, Executive Vice President in New York, and Larry Mills, Vice President in Dallas, both formerly of Aon who recently joined the team. Willis has also bolstered its specialist space division with the appointment last week of Aon Benfield’s Roger Bathurst as CEO, Willis Inspace.

Kisor, an industry veteran of over 26 years, has experience in all phases of aviationinsurance, including major accounts in the airline, products, leasing, airport, public entity,corporate and other classes of complex aviation business, both as an underwriter and asa broker. He joins Willis after 11 years at Aon where he was most recently an ExecutiveVice President overseeing Aon’s Los Angeles and Chicago operations.

Prior to Aon, Kisor held a similar position at Marsh in Los Angeles. For the first half of hiscareer, he was based in Dallas, where he held an airline products underwriting /reinsurance position at Aviation Office of America followed by a role as a broker atAlexander & Alexander of Texas and at Navigators Group, where he managed theoverall aviation underwriting operations of the company.

Commenting on the appointment, Joe Trotti, Chief Executive Officer of Willis GlobalSpecialties, said, “Bringing on board another high-profile hire like Steve demonstratesour commitment to investing in and growing the best team in the aviation insurancebroking business. His in-depth knowledge and expertise will help us offer our clientsmarket-leading insurance and risk management solutions.”

Kisor graduated in 1983 from The Ohio State University with a Bachelor of Science inBusiness Administration, specializing in Aviation Management. He also has participatedin the CPCU program and holds a private pilot license.

Willis Aerospace employs more than 320 Associates in 22 offices serving the insuranceneeds of aerospace companies around the world, including aerospace riskmanagement, leasing and financial consulting.

Willis Group Holdings Limited is a leading global insurance broker, developing anddelivering professional insurance, reinsurance, risk management, financial and humanresource consulting and actuarial services to corporations, public entities and institutionsaround the world. Willis has more than 400 offices in nearly 120 countries, with a globalteam of approximately 20,000 Associates serving clients in some 190 countries.Additional information on Willis may be found at www.willis.com.