Moins connu qu'Alan Turin, Gordon Welchman, autre casseur de codes pendant la Seconde Guerre mondiale, a lui aussi contribué à la chute du régime nazi.
Steven Mackintosh
Himself - Narrator
Brian Deacon
Gordon Welchman (voice)
Rosamund Welchman
Herself - Gordon Welchman's Daughter
W. Gordon Welchman
Himself - Ex-Head of Hut 6, Bletchley Park (1939-1941) (archive footage)
Sinclair McKay
Himself - Author, 'The Secret Life of Bletchley Park'
Jimmy Thirsk
Himself - Veteran, Hut 6
Asa Briggs
Jane Fawcett
Herself - Veteran, Hut 6
Tony Comer
Himself - GCHQ Historian and Former Analyst
John Naughton
Himself - Vice President, Wolfson College, Cambridge (as Prof John Naughton)
John Scarlett
Himself - Chairman, Bletchley Park Trust, and Former Chief, MI6 (as Sir John Scarlett KCMG OBE)
Jennifer Welchman
Herself - Gordon Welchman's Granddaughter
Robert R. Everett
Himself - Former President, The MITRE Corporation
Eric Ellingson
Himself - Gordon Welchman's Colleague
Larry Hill
Above Majestic
Images de la libération des camps. Chronique d’un film inachevé
The Mole
Pourquoi nous combattons : Prélude à la guerre
Facing Ali
Charlot, la vie et l'œuvre de Charles Chaplin
I Am Vanessa Guillen : Scandale dans les rangs
Gilbert
Necessary Evil: Super-Villains of DC Comics
Struggle : La vie et l'art perdu de Szukalski
Spider-Man : Tous les chemins mènent à No Way Home
The Swamp
We Are Legion: The Story of the Hacktivists
Sherman's March
The Beatles: Eight Days a Week
Le Making-of de Hawkeye
The Beatles: Get Back - The Rooftop Concert
The Class of ‘92
Les Adorables Batards du Baseball
Father Soldier Son