Steven Knight Director, Screenwriter Tom Hardy Ivan Locke Actor Ruth Wilson Katrina Actor Andrew Scott Donal Actor Tom Holland Eddie Actor Olivia Colman Bethan Actor Alice Lowe Sister Margaret Actor Ben Daniels Gareth Actor Bill Milner Sean Actor Paul Webster Producer Guy Heeley Producer Stuart Ford Executive Producer David Jourdan Executive Producer Steven Squillante Executive Producer Joe Wright Executive Producer Haris Zambarloukos Cinematographer Justine Wright Film Editing Dickon Hinchliffe Original Music Nigel Egerton Costume Design Shaheen Baig Casting