If you want to contact Aon by phone, call their London head office on 020 7623 5500. You can also find the phone number for your local Aon UK office on their website.

Aon is a British risk management company headquartered in London. It is also the largest insurance broker in the UK and in 2011 was the largest in the world in terms of sales revenue, as well as being the country’s largest reinsurance provider.

The Aon name increased its global presence after appearing on the football shirts of Manchester United from 2010-2014. In addition, Aon recently signed a deal to rename the club’s training ground in Carrington to the Aon Training Complex, increasing the brand’s presence.