Top 100 UK Brokers 2026: £1.25bn plus of UK general insurance revenue

- Insurance Age staff
- 06 Oct 2026
- Indicative reading time: 1 minute

Gallagher

Gallagher

https://ajg.com/uk

Head office address: The Walbrook Building, 25 Walbrook, London, EC4N 8AW

Number of UK offices including HQ: 60+

Significant members of the exec: Michael Rea, UK & Ireland CEO; Nick Harris, UK & Ireland Retail CEO; Sarah Lyons, Specialty CEO; Tom Downey, Pen Underwriting CEO; and Alistair Lester, Private Equity and M&A CEO

Significant subsidiaries and/or trading brands: Pen Underwriting, Alesco, Vasek, Just Landlords, Devitt, Intasure, CIA Landlords

Expected number of UK

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