Cathy Come Home and This Life producer Tony Garnett

With Mark Lawson.

TV and film producer Tony Garnett's work includes Cathy Come Home, Kes, Cardiac Arrest and This Life. The British Film Institute is now marking his 50 year career with a retrospective season. In this conversation, he explains why he has generally refused to do interviews, and how personal tragedies have been reflected in films such as Up the Junction.

Although he started his career as an actor, appearing in Dixon of Dock Green, Garnett discusses the appeal of being a producer and the resultant battles to make hard-hitting films tackling difficult or controversial issues - including back-street abortions and the welfare state.

Producer Claire Bartleet.