LONDON, 5 August 2008 - Christer Pehrson has joined Aon Re Global as executive director, focusing on its European-based global clients.

He was previously managing director of Guy Carpenter in New York and deputy head of its international department.

Geoffrey Bromley, vice chairman of Aon Re Global comments: "We are delighted to welcome Christer to the team to help us with our global client initiative. Christer will work closely with Aon's European network with a particular emphasis on European global clients. He has specialised in the production, marketing and coordination of multinational clients across a range of classes and we are very pleased that he chose to join our team at Aon. We will also benefit from Christer's significant experience in the Nordic area."

Christer Pehrson comments: "I am very happy to be joining a global reinsurance intermediary at the top of its game. Aon is a company with a very clear vision of what it wants to achieve and where it is going. It is an organisation with great momentum and I am delighted to have been given the opportunity to join the team."

Ends
For more information contact:
Reuben Aitchison
+44 (0)20 7086 7201
reuben.aitchison@aon.co.uk
http://aon.mediaroom.com

About Aon
Aon Corporation (NYSE: AOC) is the leading global provider of risk management services, insurance and reinsurance brokerage, human capital and management consulting. Through its 36,000 colleagues worldwide, Aon readily delivers distinctive client value via innovative and effective risk management and workforce productivity solutions. Our industry-leading global resources, technical expertise and industry knowledge are delivered locally through more than 500 offices in more than 120 countries. Aon was named the world's best broker by Euromoney magazine's 2008 Insurance Survey. In 2008, Aon ranked highest on the Business Insurance ranking of the world's largest insurance brokers based on commercial retail, wholesale, reinsurance and personal lines brokerage revenues. Aon also was ranked by A.M. Best as the number one insurance broker based on brokerage revenues in 2007 and 2008, and was voted best insurance intermediary, best reinsurance intermediary, and best employee benefits consulting firm in 2007 by the readers of Business Insurance. For more information on Aon, log onto www.aon.com.

Safe Harbour Statement: http://aon.mediaroom.com/index.php?s=67. 
Aon Limited is authorised and regulated by the Financial Services Authority in respect of insurance mediation activities only.