Cast

Steven Mackintosh

Himself - Narrator

Brian Deacon

Gordon Welchman (voice)

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Rosamund Welchman

Herself - Gordon Welchman's Daughter

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W. Gordon Welchman

Himself - Ex-Head of Hut 6, Bletchley Park (1939-1941) (archive footage)

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Sinclair McKay

Himself - Author, 'The Secret Life of Bletchley Park'

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Jimmy Thirsk

Himself - Veteran, Hut 6

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Asa Briggs

Himself - Veteran, Hut 6

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Jane Fawcett

Herself - Veteran, Hut 6

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Tony Comer

Himself - GCHQ Historian and Former Analyst

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John Naughton

Himself - Vice President, Wolfson College, Cambridge (as Prof John Naughton)

Crew

John Smithson

Director (Directing)

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Russell England

Director (Directing)