LONDON  –  28 April 2005 – Aon, a global leader in risk management, has announced the appointment of Alex Hindson as Associate Director within the Enterprise Risk Management (ERM) unit of IRMG, part of Aon Captive Services Group. The move will further strengthen Aon’s ability to provide strategic advice, from initial risk assessment to implementation of solutions, for many of the world’s largest companies.

Mr Hindson was previously the Risk Services Manager at AstraZeneca, where he helped to drive the award-winning, enterprise-wide integrated risk management programme. This included his development of innovative decision-making techniques for senior management. Business risks addressed included supply chain management, business continuity, corporate responsibility, business process re-engineering and clinical trials.

Following Turnbull and Sarbanes Oxley, he also managed AstraZeneca's risk reporting processes to bring them in line with new compliance procedures.

In his new role, Alex Hindson will be responsible for addressing client issues and enhancing shareholder value through helping clients to achieve sustainable earnings growth, reduced earnings volatility and reduced cost of risk.

Ken MacDonald, Group Managing Director of IRMG – of which ERM is a central component, commented: “Alex Hindson’s appointment enables us to further differentiate our service offering through the quality of our people and by employing leading methodologies. Alex also has significant exposure to risk finance and Alternative Risk Transfer, and will work closely with IRMG’s Risk Finance MD, Rory Moloney, and his Senior Management Group team as we further develop our Enterprise Risk Management, Risk Finance, Actuarial and Outsourcing services for large corporates.”

Note to Editors:

Enterprise Risk Management (ERM) offers clients an array of services that can help them identify and assess their major risks and create consistent, enterprise-wide solutions for dealing with them. ERM aims to increase the company's understanding of its overall risk portfolio and provide management with a better understanding and thus greater ability to reduce the impact of losses on the balance sheet. By achieving this we are able to help the company focus on risk management decisions that maximise shareholder value.

IRMG is the Risk Management, captive and alternative risk finance consulting arm of Aon Captive Services Group (ACSG) and works with many of the world's largest companies providing advanced risk management solutions, risk financing advice, transaction management and insurance services.
IRMG has offices in London, Weybridge (Surrey), Leeds, Paramus (New Jersey), New York, San Francisco, Chicago, Cleveland (Ohio), Germany, Switzerland, Sweden and Austria.

About Aon

Aon Corporation (www.aon.com) is a leading provider of risk management services, insurance and reinsurance brokerage, human capital and management consulting, and specialty insurance underwriting. The company employs approximately 48,000 professionals in its 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 relating to future results, 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 the general economic conditions in different countries around the world, fluctuations in global equity and fixed income markets, exchange rates, rating agency actions, resolution of pending regulatory investigations and related issues, including those related to compensation arrangements with underwriters, pension funding, ultimate paid claims may be different from actuarial estimates and actuarial estimates may change over time, changes in commercial property and casualty markets and commercial premium rates, the competitive environment, the actual costs of resolution of contingent liabilities and other loss contingencies, and the heightened level of potential errors and omissions liability arising from placements of complex policies and sophisticated reinsurance arrangements in an insurance market in which insurer reserves are under pressure.  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.