Timothy Spall on playing Holocaust denier
Media playback is unsupported on your device

Timothy Spall on playing Holocaust denier David Irving

15 January 2017 Last updated at 11:08 GMT

Denial is a film about the renegade British historian David Irving, accused of denying the Holocaust.

Timothy Spall spoke to Andrew Marr about the challenges of playing the role: "He is isolated in his views so that does have its effect on you".