Willis

London, UK, November 17, 2010 -Willis Group Holdings (NYSE: WSH), the global insurance broker, today announced the appointment of Mike Lack as an Executive Director in its London downstream energy team. In his new role, effective immediately, Lack reports to Justin Blackmore, Managing Director, Willis Energy Downstream.

Lack has over 40 years experience in the insurance industry most recently as a Board Director of United Insurance Brokers (UIB) and Managing Director of its Energy and Property/Liability division.

He began his career in 1970 at Wigham Richardson & Bevington Ltd before moving to Lavy Hancox & Carter. Following a ten-year spell at Cayser Steel Bowater, during which time he relocated to Oman, he joined Marsh & McLennan Middle East Ltd. in 1985 to form a Non Marine Energy, Property and Casualty Division. Lack was then involved in the initial formation of UIB and subsequent purchase of Marsh’s Middle East operation. He worked for UIB for 23 years.

Lack has handled major downstream energy programs around the world from regions as diverse as North Africa, Europe and Asia.

Commenting on Lack’s appointment, Blackmore said: “We are delighted to welcome someone of Mike’s pedigree and experience to Willis Energy. His vast experience in handling mega oil and gas programs will be invaluable to our downstream energy team.”

Willis Group Holdings plc is a leading global insurance broker. Through its subsidiaries, Willis develops and delivers professional insurance, reinsurance, risk management, financial and human resource consulting and actuarial services to corporations, public entities and institutions around the world. Willis has more than 400 offices in nearly 120 countries, with a global team of approximately 17,000 employees serving clients in virtually every part of the world. Additional information on Willis may be found at www.willis.com.