LONDON, 14 May 2007 – Aon’s marine team is continuing its drive for American business by employing a duo of cargo specialists, Kevin Brown and Tony Achinelli, to work alongside Paul White who was appointed head of the Americas liability team last month. Darren Carr has also been promoted to leader of ports & international liabilities to further boost global business. Pictured in the photo are (L-R) Tony Achinelli, Darren Carr and Kevin Brown.

The new roles comprise:

• Kevin Brown – director:Kevin specialises in North American cargo and will lead the Americas cargo team in London.  With over 14 years in the market, he was previously director for international cargo at Heath Lambert.

• Tony Achinelli – account handler: Tony previously worked alongside Kevin at Heath Lambert and now joins Aon as an account handler for Americas cargo business. Tony will provide invaluable broking and technical support to the team.

• Darren Carr – leader of ports and international liabilities: Darren is responsible for the maintenance and development of port clients, working closely with the Americas liability team. He joined Aon five years ago, working on a major global shipowning account. This experience has developed expertise across the whole range of marine liability exposures and multi-national jurisdictions.

Stephen Hawke, executive director of Aon Marine and chairman of Aon PLF, said: “We’ve brought together cargo, port and liability specialisms to offer a wealth of marine experience, as well as the drive and leadership qualities vital to our clients. The synergy will also be crucial in developing our Americas book of business through Aon’s global network.”

About Aon

Aon Corporation is a leading provider of risk management services, insurance and reinsurance brokerage, human capital and management consulting, and specialty insurance underwriting.  There are 43,000 employees working in Aon’s 500 offices in more than 120 countries.  Backed by broad resources, industry knowledge and technical expertise, Aon professionals help a wide range of clients develop effective risk management and workforce productivity solutions.

This press release contains certain statements related to future results, or states our intentions, beliefs and expectations or predictions for the future 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 either historical or anticipated results depending on a variety of factors. Potential factors that could impact results include: general economic conditions in different countries in which we do business around the world, changes in global equity and fixed income markets that could affect the return on invested assets, fluctuations in exchange and interest rates that could influence revenue and expense, rating agency actions that could affect our ability to borrow funds, funding of our various pension plans, changes in the competitive environment, our ability to implement restructuring initiatives and other initiatives intended to yield cost savings, our ability to execute the stock repurchase program, our ability to obtain regulatory or legislative changes to permit continuous sales of our supplemental Medicare health product, changes in commercial property and casualty markets and commercial premium rates that could impact revenues, changes in revenues and earnings due to the elimination of contingent commissions, other uncertainties surrounding a new compensation model, the impact of investigations brought by state attorneys general, state insurance regulators, federal prosecutors, and federal regulators, the impact of class actions and individual lawsuits including client class actions, securities class actions, derivative actions, ERISA class actions, the impact of the analysis of practices relating to stock options, the cost of resolution of other contingent liabilities and loss contingencies, and the difference in ultimate paid claims in our underwriting companies from actuarial estimates.  Further information concerning the Company and its business, including factors that potentially could materially affect the Company’s financial results, is contained in the Company’s filings with the Securities and Exchange Commission.

Aon Limited is authorised and regulated by the Financial Services Authority in respect of insurance mediation activities only

Aon Limited is authorised and regulated by the Financial Services Authority in respect of insurance mediation activities only.