How many movies have Ian Richardson and Jonathan Burn acted in together?

They have worked on 1 movie together! Their first movie together was The Persecution and Assassination of Jean-Paul Marat as Performed by the Inmates of the Asylum of Charenton Under the Direction of the Marquis de Sade (1967) and was their highest rated movie together. They have not worked together since The Persecution and Assassination of Jean-Paul Marat as Performed by the Inmates of the Asylum of Charenton Under the Direction of the Marquis de Sade (1967).