Chas (James Fox) is a “performer,” an ultra-violent enforcer for an East London gang who begins to enjoy his work a little too much, culminating in the murder of an associate. He goes on the run, both from the police and from his former colleagues and finds himself a hideout in the house of a reclusive, eccentric rock star named Turner (Mick Jagger) who lives there with his female friends. Chas and Turner are initially repelled by each other, but come to see that the worlds of the rock star and the gangster are not as different as they first appear.
His previous cult film was The Servant (1963, directed by Joseph Losey) in which Tony (James Fox), a wealthy young Londoner, hires Barrett (Dirk Bogarde) as his manservant. Nothing being what it seems, the characters manoeuvre around each other until roles reverse and Tony emerges enslaved to his butler.
Both Performance and The Servant are WMCs.