Mark Billingham, 58, served 27 years in the Forces, starting as a cadet, then in the Parachute Regiment before joining the SAS. He served in Afghanistan, Iraq, South America and Africa, leading high-profile hostage negotiations and was the SAS Ground Commander for the 2005 London terror attacks.
Former SAS sergeant major Billy Billingham MBE is most famous for being on Channel 4 s SAS: Who Dares Wins. After leaving the military, he was a bodyguard to Hollywood stars.