Bray Wintour Patis (BWP) has signed a deal with The Broker Network to provide network members with access to the Lloyd's and London markets.
They have set up a joint company called London Broking Services, which will trade as Broker Network London Market (BNLM).
It was launched at Lloyd's on Monday and piloted by an initial ten brokers.
Through BWP, it will provide a dedicated switchboard, broking and claims staff, technical accounting and documentation support and advice on the best way to present risks.
BNLM will place lines such as material damage, business interruption, liability and casualty, but will consider motor fleet and other classes if members are having difficulty.
The Broker Network managing director Grant Ellis said BNLM would help brokers place difficult risks.