Broker Keelan Westall said it has been ranked number 31 in the Deloitte Indy 100 Awards.
The list, developed by the Independent on Sunday and Deloitte & Touche, identifies companies with turnover of between £5m and £100m who have demonstrated the fastest growth, said the company.
Keelan Westall has an annual premium income of over £30m, on target for £70m in 2008, it said.