London, 1 June 2006 – Aon Limited today announced the launch of three exclusive facilities that will enable captive insurance companies and UK/European corporates to reduce their risk exposure in a cost effective way, while helping to reduce volatility in an increasingly unpredictable insurance market.

The three initial facilities being launched to provide captives and UK/European corporates with more control are:

• The Captive Reinsurance Stop-Loss facility, which provides a package of competitive risk transfer options across multiple lines of business. This enables captives to cap their total aggregate retained risk exposure while providing up to £16.5million market capacity.
• The Primary Property Damage and Business Interruption Package, which bolsters capacity at a primary level where captives need it. It provides a block of quality rated capacity with in-built critical natural catastrophe limits. There is up to £37.5 million capacity with a flexible attachment point.
• The Excess Property Damage and Business Interruption Line Slip, which gives captives and corporates the peace of mind of knowing there is capacity available of up to £155m. The minimum attachment point is £25m.

These facilities have long-term potential and are fully structured to keep premiums down and coverage wide. They can also be tailored to meet specific client needs.

Ken MacDonald, CEO of Aon’s large account unit, Risk Management Solutions (RMS), commented: “The creation of these innovative facilities is evidence of our determination to create solutions and services that deliver distinct value. These facilities will help reduce volatility and cost, and enable our clients to better manage their risk exposures’’.

The head of RMS’s risk transfer team, Robert Brown, added: “Increased volatility in the insurance market is a persistent headache for the buyer. With another lively hurricane season predicted there is no saying what will happen to rates and capacity later in the year. These products are designed to keep the client in control of their insurance buying and give them the certainty they need. This is all about market making not market placing; our clients are demanding these solutions.”

Stephen Cross, CEO of Aon Captive Services Group added: “From a captive perspective, managing cost, volatility and regulatory capital, especially across multiple lines of retained risk, is absolutely critical. These facilities bring to the captive market something that is new and innovative and addresses a very real need.”

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 46,000 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, 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, and ERISA class actions, 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.