| Person | Type | Job | Role(s) |
|---|---|---|---|
 Craig Warner | Crew | Writing | Writer |
Edward White | Crew | Sound | Music |
 Andy Jackson | Crew | Camera | Director of Photography |
Clare Beavan | Crew | Directing | Director, Producer |
Jennifer Beamish | Crew | Production | Producer |
 Paul Sen | Crew | Production | Executive Producer |
Rob Goldie | Crew | Camera | Director of Photography |
Patrick Sammon | Crew | Production | Executive Producer |
Ryan Greenawalt | Crew | Production | Executive Producer |
Nic Stacey | Crew | Directing | Director |
David Leavitt | Cast | Himself - Alan Turing's Biographer | |
 Ed Stoppard | Cast | Actor | Alan Turing |
 Henry Goodman | Cast | Actor | Franz Greenbaum |
 Ian Stewart | Cast | Actor | Himself - University of Warwick (as Professor Ian Stewart) |
 Paul McGann | Cast | Actor | Himself - Narrator (voice) |
Asa Briggs | Cast | Himself - Codebreaker, Bletchley Park | |
Jean Valentine | Cast | Herself - WRNS and Bombe Operator, Bletchley Park | |
Christopher Morcom | Cast | Himself - Christopher Morcom's Nephew (as Christopher Morcom QC) | |
Dermot Turing | Cast | Himself - Alan Turing's Nephew | |
Rolf Noskwith | Cast | Himself - Codebreaker, Bletchley Park | |
| Person | Type | Job | Role(s) |
