Aon headquarters details
Location map
Open in Google MapsAll Aon office locations
| City | State / region | Country | Type |
|---|---|---|---|
| London HQ | Greater London | United Kingdom | Headquarters |
About Aon
Aon (New York Stock Exchange (NYSE): AON) is headquartered in London, Greater London, United Kingdom. Founded in 1982, the company operates across 10 countries with approximately 60,000 employees worldwide.
Where is Aon's main office?
Aon's main headquarters office is located at 122 Leadenhall Street, London, Greater London EC3V 4AN. This serves as the company's primary corporate address and is home to its executive leadership team.
Aon regional offices
Beyond its headquarters in London, Aon maintains 23 offices across 10 countries. Regional offices span 10 countries.
Aon contact information
The main switchboard for Aon headquarters can be reached at 13123811000. For investor relations, visit aon.com/investor-relations.
What does Aon do?
Aon plc is a British-American professional services firm. The company operates two divisions: Risk Capital (67% of 2024 revenues), which provides brokerage and consulting services for risk management and insurance and reinsurance, and Human Capital (33% of 2024 revenues), which provides services for health insurance, retirement plans, pension plans, and talent advisory.
Frequently asked questions
Where is Aon headquarters?
Aon's headquarters is located at 122 Leadenhall Street, London, Greater London EC3V 4AN, United Kingdom.
How many offices does Aon have?
Aon operates 23 offices across 10 countries as of 2026.
What is Aon's corporate address?
The official corporate address is 122 Leadenhall Street, London, Greater London EC3V 4AN.
When was Aon founded?
Aon was founded in 1982 and has grown to employ approximately 60,000 people worldwide.
What is Aon's phone number?
The main phone number for Aon headquarters is 13123811000.