London/Hamburg – 17 September 2004 – Aon has announced a consolidation of its Nordic reinsurance operations with the launch of Aon Re Nordic. The new unit is a combination of Aon’s Nordic expertise in its London and Hamburg offices and will be led by Peter Bernehed and Tony Hale as joint Chief Executive Officers.

Commenting on the new unit, Clem Booth, Chairman and Chief Executive Officer for Aon Re International, said: “We have invested significantly in building an international structure for Aon that allows us to bring together all our international reinsurance expertise to deliver the best service. While our Hamburg and London offices have been working closely together for some time to service the Nordic area, the establishment of Aon Re Nordic will ensure that our Nordic clients get the best expertise that Aon can offer.”

Commenting on their appointment, Peter Bernehed and Tony Hale said: “ We are delighted to formalise the close working relationship that we already have between our London and Hamburg offices and are confident that our Nordic clients will reap the benefits through greater creativity, innovation and even better access to global reinsurance markets.”

Notes to Editors

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 52,000 professionals in its 600 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 regulatory 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.

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