Essex Boys (movie, 2000)

Billy has just scored an entry-level position with the local crime cartel. His first job is to mind Jason, a newly released thug with a vicious temper. Jason thinks it's his job to teach Billy about crime, drugs and women. Little does he know that Billy has his eyes on Jason's own wife, Lisa. When an ecstasy deal goes bad, Jason vows revenge on the boss, while Billy looks to take out Jason. Before long, bodies start turning up