A distinctive bald, stocky figure with a strong Yorkshire accent, Glover was a character actor who appeared constantly in television programmes and in films. On television he appeared regularly in the sit-com Porridge and the detective drama Campion, and his guest roles are too numerous to list. On film he appeared in memorable roles in Alien 3, An American Werewolf in London, but he will be best remembered for his role as the sadistic sports teacher in Kes.
Before becoming an actor he had been a wrestler, using the name Leon Arras, the man from Paris.
His distinctive voice could be heard advertising Tetley Tea in a long running series of animated commercials.