Matthew Goode Hugh Alexander
Keira Knightley Joan Clarke
Benedict Cumberbatch Alan Turing
Jack English Still Photographer
Charles Dance Commander Denniston
Denise Kum Makeup Artist
Tuppence Middleton Helen
Mark Strong Stewart Menzies
John Midgley Sound Recordist
Allen Leech John Cairncross
Alex Lawther Young Alan Turing
Steven Waddington Superintendent Smith
Tom Goodman-Hill Sergeant Staehl
Steven Hall Second Unit Director of Photography
Matthew Beard Peter Hilton
Gary Hutchings Key Grip
Tim van Eyken MI6 Agent
Óscar Faura Director of Photography
Rory Kinnear Detective Robert Nock
Morten Tyldum Director
Tim Steed Electrical Assistant
Jack Bannon Christopher Morcom
Alexandre Desplat Original Music Composer
Martin Jensen Sound Re-Recording Mixer
William Goldenberg Editor
Nina Gold Casting
Teddy Schwarzman Producer
Suzie Shearer Production Manager
Peter Heslop Co-Producer
Sammy Sheldon Costume Design
Miranda Bell Margaret
Joseph Oliveira MI6 Agent (uncredited)
Alexander Cooper Bletchley Park Agent (uncredited)
Grace Calder Assistant Wren (uncredited)
Andrew Havill Teacher
Peter Wignall Steadicam Operator
Stuart Hilliker Sound Re-Recording Mixer
Andy Kennedy Sound Designer
James Northcote Jack Good
James Manning Second Assistant Director
Victoria Wicks Joan's Mother
Lucy Ainsworth-Taylor Visual Effects Producer
Rebecca Milton Art Direction
Kirsty Whalley Music Editor
Maria Djurkovic Production Design
Will Bowden Military Policeman
Nick Thomas Property Master
Lee Walpole Supervising Sound Editor
Tim Battersby First Assistant "A" Camera
Matt Curtis Title Designer
Angela Barson Visual Effects Supervisor
Dennis Good Civilian (uncredited)
Graham Moore Screenplay, Executive Producer
Charis Theobald Graphic Designer
Levan Doran Stunts
Mark Underwood Crossword Man (uncredited)
Richard George Location Manager
Rory Moles First Assistant "B" Camera
Joe Beal Sound Effects Editor
Peter Burgis Foley
Jack Tarlton Charles Richards
Roo Maurice Makeup Artist
Joshua Wichard German Spy Plane Pilot (uncredited)
James G. Nunn Sherborne Student 2
Tatiana Macdonald Set Decoration
Laurence Kennedy Headmaster
Albert Carreras "A" Camera Operator
Nicky Ackland-Snow Construction Coordinator
Simon Surtees Second Assistant "A" Camera
Crispin Reece Second Unit Director
Beverly Winston Script Supervisor
Sarah Shepherd Dialect Coach