Benedict Cumberbatch character Alan Turing
Keira Knightley character Joan Clarke
Matthew Goode character Hugh Alexander
Rory Kinnear character Detective Robert Nock
Allen Leech character John Cairncross
Matthew Beard character Peter Hilton
Charles Dance character Commander Denniston
Mark Strong character Stewart Menzies
James Northcote character Jack Good
Tom Goodman-Hill character Sergeant Staehl
Steven Waddington character Superintendent Smith
Ilan Goodman character Keith Furman
Jack Tarlton character Charles Richards
Alex Lawther character Young Alan Turing
Jack Bannon character Christopher Morcom
Tuppence Middleton character Helen
Dominik Charman character Sherborne Student 1
James G. Nunn character Sherborne Student 2
Charlie Manton character Sherborne Student 3
David Charkham character Joan's Father
Victoria Wicks character Joan's Mother
Andrew Havill character Teacher
Laurence Kennedy character Headmaster
Tim van Eyken character MI6 Agent
Viv Weatherall character Military Policeman
Miranda Bell character Margaret
Tim Steed character Electrical Assistant
Bartosz Wandrykow character Crossword Enthusiast
Lese Asquith-Coe character MI6 Agent (uncredited)
Hayley Joanne Bacon character Woman in Crowd (uncredited)
Ingrid Benussi character Dancer (uncredited)
Nicholas Blatt character Ministry Man (uncredited)
Jack Brash character Evacuee (uncredited)
Ancuta Breaban character Wren (uncredited)
Alex Corbet Burcher character Dancer (uncredited)
Grace Calder character Assistant Wren (uncredited)
Richard Campbell character Crossword Man in Pub (uncredited)
Daniel Chapple character MI6 Agent (uncredited)
Lisa Colquhoun character Joan Clarke's Friend (uncredited)
Alexander Cooper character Bletchley Park Agent (uncredited)
Leigh Dent character Passerby (uncredited)
Esther Eden character WW2 Wren (uncredited)
Sam Exley character Military Policeman 3 (uncredited)
Ben Farrow character Military Police (uncredited)
Mike Firth character Crossword Enthusiast (uncredited)
Hannah Flynn character Wren (uncredited)
James Gard character School Boy (uncredited)
Guna Gultniece character Passerby (uncredited)
Benjamin Hardie character Paperboy (uncredited)
Oscar Hatton character Evacuee (uncredited)
Luke Hope character MI6 Agent (uncredited)
Vera Horton character Nunn (uncredited)
Vincent Idearson character MI6 Agent (uncredited)
Denis Koroshko character Civilian (uncredited)
Debra Leigh-Taylor character Evacuee (uncredited)
Stuart Matthews character Bletchley Park Operative (uncredited)
Amber-Rose May character Joan Clarke's Friend (uncredited)
Samantha Moran character Wren (uncredited)
Adam Nowell character Technician (uncredited)
Joseph Oliveira character MI6 Agent (uncredited)
Harry Leonard Parkinson character Evacuee (uncredited)
John Redmann character Young Officer (uncredited)
David G. Robinson character Police Sergeant White (uncredited)
Alice Tapfield character Wren (uncredited)
Mark Underwood character Crossword Man (uncredited)
Nicola-Jayne Wells character First Aid Nurse (uncredited)
Josh Wichard character German Pilot (uncredited)
