29th August 2014 Telluride Film Festival | ||
8th October 2014 London Film Festival | ||
![]() | 14th November 2014 Cinema | |
![]() | 25th December 2014 Cinema | |
![]() | 31st March 2015 Blu-Ray 113 mins 2.35:1 |
![]() | Alan Turing |
![]() | Joan Clarke |
![]() | Hugh Alexander |
![]() | Detective Robert Nock |
![]() | John Cairncross |
![]() | Peter Hilton |
![]() | Commander Denniston |
![]() | Stewart Menzies |
![]() | Sergeant Staehl |
![]() | Superintendent Smith |
![]() | Charles Richards |
![]() | Helen |
Joan's Father | |
![]() | Joan's Mother |
![]() | Teacher |
![]() | Headmaster |
![]() | Margaret |
![]() | Electrical Assistant |
MI6 Agent | |
![]() | Navy Captain |
Military Police Officer | |
![]() | Himself (archive footage) |
Civilian | |
Technician | |
![]() | Bletchley |
German Spy Plane Pilot |