Coventry South MP Zarah Sultana married the FBU's Craig Lloyd last August - and then went on to speak up for key FBU demands in the Commons, including calling for more funding for fire services.
The Mail on Sunday can reveal that Durham MP Mary Foy is in a relationship with militant former fireman Matt Wrack, who led the Fire Brigades Union (FBU) for two decades until January.
Matt Wrack (pictured), a militant socialist who formerly led the Fire Brigades Union (FBU), was named as the new general secretary of the union on Tuesday.