After playing a brief unbilled cameo as a ringside spectator in the drama film "The Krays" (1990), McLean appeared in such roles as gangster Eddie Davies in ITV's customs drama "The Knock" and had a small part as a police chief in "The Fifth Element" (1997). His largest and most famous role was in Guy Ritchie's "Lock, Stock and Two Smoking Barrels" (1998), playing the part of criminal enforcer 'Barry the Baptist'. Aged twenty, McLean married Valerie. They later had two children, a son named Jamie and a daughter named Kelly. McLean described his family as his "rock," whose existence helped him to reject a life solely devoted to crime, and for whom he maintained some self-control during his fights. Kelly, a mother of two, has been diagnosed with bipolar disorder, and says doctors told her that McLean likely had a version of the disorder himself. Being a famous figure in unlicensed boxing, McLean made fans as well as enemies, such as the supporters of his boxing rivals and disgruntled punters who had lost money betting on McLean's opponents. McLean also had enemies from years of ejecting people from pubs and clubs. He suffered two bullet wounds from separate attacks, and was attacked from behind and stabbed on two occasions. One of the assailants, Barry Dalton, a former bare-knuckle fighter who ran protection rackets across London, had a falling out with McLean and confronted him with a shotgun at his home while his children were in the house. McLean said that he later caught up with Dalton and punished him. Dalton had also made many other enemies, and was found dead with a bullet in his head in 1992, a murder for which McLean asserted his innocence. Separately it has been stated that the murder of Dalton was ordered by a gang of East London gangsters and that McLean was completely uninvolved, though the murder has not been officially solved. In 1992, McLean was working as the head doorman at the Hippodrome in London's Leicester Square, when he ejected a man named Gary Humphries who was reportedly on drugs, streaking through the nightclub, urinating on the floor and harassing women. McLean admitted to "giving him a backhander." Humphries died later that night and was found to have a broken jaw and severe neck injuries. McLean was arrested for the murder of Humphries by the same policeman who had caught the Kray twins, Superintendent Leonard "Nipper" Read.