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Aon UK Offices

Please click here to view the Aon UK offices.

Our global headquarters address

The Aon Centre
The Leadenhall Building
122 Leadenhall Street
Tel: +44 (0)20 7623 5500
Fax: +44 (0)20 7621 151

Our mailing address

Aon plc
PO Box 730


Aon takes customers' complaints very seriously and aims to ensure that complaints are handled fairly, effectively and promptly and are resolved at the earliest possible opportunity.

In the event that you are unhappy with our service please register a complaint with the correct Aon entity who will ensure that your complaint is referred to an appropriate person to be investigated.

A copy of our complaints handling procedure is available on request. If you cannot settle your complaint with us, you may be entitled to refer it to the Financial Ombudsman Service. Visit www.financial-ombudsman.org.uk for further details.

Alternatively, if you are based outside of the UK you can register your complaint on the Online Dispute Resolution (ODR) Platform using the link http://ec.europa.eu/consumers/odr/.


Last updated 9 April 2019

Aon UK Limited is authorised and regulated by the Financial Conduct Authority. FP310451