Coversure has brought its number of national outlets to 58 with the opening of a new franchise in Worthing.
Former Lloyd's and London Market broker Graham Bell will manage the new office.
Coversure offers a range of domestic and commercial insurances. It has a combined premium income of £30m.
It was the first UK intermediary to launch an internet site selling online motor quotes. This product won the title of Best Broker Use of Technology at the 1998 Insurance Industry Awards.
The firm was established in 1986 and has a national network of independently-owned insurance consultancies.