Elenco

• Derek Jacobi — Alan Turing
• Alun Armstrong — Mick Ross
• Blake Ritson — Christopher Morcom
• Prunella Scales — Sara Turing
• Harold Pinter — John Smith
• Julian Kerridge — Ron Miller
• Richard Johnson — Dilwyn 'Dilly' Knox
• Amanda Root — Patricia 'Pat' Green
• William Mannering — Young Alan Turing

Produção

• Jack Emery — producer
• Rebecca Eaton — executive producer
• John Drury — executive producer
• Richard Langridge — executive producer
• Andrew Rowley — producer
• Pippa Ailion — casting

Argumento

• Andrew Hodges — book
• Hugh Whitemore — writer

Direção de arte

• Fiona McNeill — art direction
• Barbara Gosnold — production design

Guarda-roupa e maquilhagem

• Kate Benton — makeup artist
• Frances Tempest — costume design
• Pam Meager — makeup designer
• Kate Hodgson — makeup artist

Câmara

• Robin Vidgeon — director of photography

Som

• Philip Alton — sound editor
• Maurice Hillier — sound recordist

Montagem

• Laurence Méry-Clark — editor

Realização

• Herbert Wise — director