Michael Fassbender on filming Macbeth on Isle of Skye
27 September 2015 Last updated at 11:51 BST
Michael Fassbender has described how he approached playing Macbeth by imagining him as a man suffering from post-traumatic stress.
Speaking to Andrew Marr, he said that realisation was a "fantastic key" to help get into the character.
He also described the "relentless" weather conditions during the filming on the Isle of Skye, which included filming barefoot wearing only a nightshirt.
Macbeth film clips courtesy of StudioCanal