Over 80 members of Parliament are also members of MSF. They are primarily members of the Labour Party.
MSF itself was the result of a merger in January of 1988. The main parts were Association of Scientific, Technical, and Managerial Staff and Technical, Administrative, and Supervisory Staffs, another British union.
The General Secretary of the MSF section of AMICUS is Roger Lyons, but his position is under legal challenge, due to be heard by the Certification Officer in July of 2003.