Gordon Welchman was one of the original elite codebreakers crucial to the allies defeating the Nazis in World War II. He is the forgotten genius of Bletchley Park.

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Main Cast: Steven Mackintosh, Brian Deacon, Rosamund Welchman, W. Gordon Welchman, Sinclair McKay, Jimmy Thirsk, Asa Briggs, Jane Fawcett, Tony Comer, John Naughton

Directors: Russell England, John Smithson

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