Top 100 UK Brokers 2025: £600m – £750m of UK general insurance revenue
Aon - Ardonagh Group – Howden – WTW
AonHead office address: The Aon Centre, The Leadenhall Building, 122 Leadenhall Street, London, EC3V 4AN https://aon.com/unitedkingdom
Number of UK offices including HQ: Approximately 20 offices within the UK (and Ireland)
Significant members of the exec:
Greg Case, Aon Global CEOJulie Page, Aon EMEA CEOJane Kielty, Aon UK CEOExpected number of UK employees as of 30 June 2025: 6083 (does not include contingent workers)
Total employees: Female 45.29%, male 54.71%
Board level employees: seven women
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