Regional heavyweight law firm Freeth Cartwright, which has an office in Birmingham, is to join forces with Oxford-based Henmans, creating a group which will have 629 staff, including 125 partners, a network of 10 offices nationally and a total revenue approaching £50 million.

The merger will enable Freeth Cartwright to further strengthen its portfolio of services and will allow Henmans, one of the largest law firms in the Thames Valley and a specialist in the charity, private client, agricultural services and insurance sectors, to expand its client base across the country.

Peter Smith, chief executive at Freeth Cartwright, said: "This is a major step forward for both firms in achieving our long term strategic objectives. We very much look forward to working together in our project to become a leading national firm whilst maintaining our commitment to the local market in each of our offices."

Malcolm Sadler, senior partner at Henmans, said: "By combining our resources, Henmans and Freeth Cartwright will become a key player among the UK’s top law firms. This is a very exciting time for us and we very much look forward to the opportunities this merger will provide."

Henmans will remain a separate entity and will rebrand as Henmans Freeth once the merger has completed.