Kenneth William Michael Haigh was an English actor. He first came to public recognition for playing the role of Jimmy Porter in the play Look Back in Anger in 1956 opposite Mary Ure in London's West End theatre. Haigh's performance in the role on stage was critically acclaimed as a prototype dramatic working-class anti-hero in post-Second World War English drama.

Look Back in Anger (1956) is a realist play written by John Osborne. It focuses on the life and marital struggles of an intelligent and educated but disaffected young man of working-class origin, Jimmy Porter, and his equally competent yet impassive upper-middle-class wife Alison. The supporting characters include Cliff Lewis, an amiable Welsh lodger who attempts to keep the peace; and Helena Charles, Alison's snobbish friend.