Bletchley Park: Code-Breaking's Forgotten Genius

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. Filmed extensively at Bletchley Park, the centre for codebreaking operations during World War II, this documentary features the abandoned buildings where thousands of people worked tirelessly trying to crack the codes; Hut 6, where Welchman pioneered his groundbreaking work; and the machines that Welchman helped design. (bbc.co.uk)