LONDON, 8 August 2007 – Aon Limited, the UK’s largest insurance broker and risk consultant, today announced an agreement to acquire specialist vehicle insurance broker, Firebond. The terms of the transaction are not disclosed.

Firebond, established in 1993, is an insurance broking service specializing in classic cars. It enjoys a special relationship with classic car enthusiasts and is know for its exceptional service offering.

Aon provides tailor made cover for specialist personal risks, including prestige sports and classic cars, holiday homes, yachts, travel, art, antiques, estates, high value goods and other niche lines.

Aon’s acquisition of Firebond, with operations in Cambridge and Bingley, further consolidates Aon’s position as the clear market leader in the classic car broking sector.

Peter Harmer, CEO of Aon UK, commented: “Firebond is a natural fit with both the Aon Classic Cars business and our Footman James business. Firebond will now be able to utilise the buying power and resources of a large broker to provide clients with the best value and service available. Our wider product provision, infrastructure and backing will provide Firebond with new opportunities for the future development of the business.”

Notes to editors:

About Firebond

Firebond was incorporated in 1993. It is a well-established small insurance broker based in Cambridge offering general retail insurances with a Classic car insurance facility. As well as Cambridge, Firebond has a sales and administration office in Bingley, West Yorkshire. Firebond’s primary class of insurance is Classic Cars, which represents 75% of revenue with the remaining 25% being other personal lines. Firebond is a company dedicated to creating distinctive value for the customers it serves, committed to customer focus, innovation and high performance.

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.