BRM 1861 is managed by the Marlborough Underwriting Agents Limited (MUAL), a Lloyd's Managing Agent.

The stamp capacity of syndicate 1861 is £82m in 2008 and £100m in 2009.

Starr Managing Agents Limited (SMAL) underwrites Aviation, Energy, Marine, and Technical Risk Property on behalf of syndicate 1861 under binding authority agreements with MUAL.