LONDON, 5 June 2007 – Aon Consulting has hired a fixed income derivative specialist and a senior relationship manager after lengthy careers with leading City institutions. The appointments highlight Aon Consulting’s innovative approach to risk management and the increased competition between investment consulting firms and banks for experienced pensions professionals.

Andrew Firth joined Aon Consulting’s Financial Risk Consulting (FRC) team last week. He aims to bring an in-depth knowledge of derivatives that immunise interest rate and inflation risk together with other products being devised by investment banks and their suitability for pension schemes of all sizes. Andrew spent 11 years with BNP Paribas’ fixed income division with a considerable focus on the corporate pension fund sector for many years. He has also held risk management roles with TD Bank and before that worked for Midland Bank International.

Andrew said: “There is resistance from some pension scheme trustees and sponsors to many of the products on offer from investment banks on grounds of cost or complexity currently. I have experience of being a trustee myself and sympathise with the demands placed on them. I will assist Aon Consulting clients to select the most appropriate products for the goals of their scheme, via independent advice, and achieve the best execution arrangements.”

Aon Consulting has appointed Brian McCauley to further strengthen the FRC team. He joins after ten years with asset manager Blackrock, where he was a member of Blackrock Pensions Limited’s Management Committee. Brian has extensive experience of advising defined contribution and defined benefit corporate clients. He was also responsible for key DC consultant relationships. Prior to this he spent ten years with Fidelity Institutional Asset Management in Boston and London.

Iain Brown, head of the FRC team, said: “The appointments of Andrew and Brian reflect the strong progress achieved by our FRC platform since it was established almost a year ago to bring together actuarial and investment risk management advice for clients. Both appointments will be valuable additions to the team and the development of the FRC platform. There has been a significant increase in risk management products targeted at pension funds recently across areas such as contingent asset funding, liability driven investment, derivatives, scheme liability buyouts and growth assets. We expect this trend to continue and for corporates and trustees to prioritise risk management issues as schemes mature.”

About Aon Consulting

Aon Consulting is a leading human capital consultancy, helping organisations of every size to attract and keep the employees they need. We advise on all aspects of employment, including health-related insurance and risk; employee compensation and pensions; human resource strategy planning; job design and change management; and staff assessment and legal issues. Aon Consulting is a division of Aon, one of the UK’s largest insurance brokers and providers of risk management services and a major force in reinsurance and the UK human capital consulting market.  Aon Consulting Limited is authorised and regulated by the Financial Services Authority.

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.