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The official website for BBC History Magazine, BBC History Revealed and BBC World Histories Magazine

Alan Turing

Alan M Turing and colleagues working on the Ferranti Mark I Computer, 1951.

Second World War

Alan Turing: The man, the enigma

Staff hard at work at Bletchley Park. The people who worked here did so under conditions of utmost secrecy, and with little idea of how their work slotted into the grand scheme of things. (Photo by SSPL/Getty Images)

Second World War

Alan Turing was not the only star of Bletchley Park

Code-breaking personnel at Bletchley Park, 1943. (Photo by Bletchley Park Trust/SSPL/Getty Images)

Second World War

The evolution of British code-breaking

A photograph of Bletchley Park codebreaker Alan Turing (1912–54). (Photo by Fine Art Images/Heritage Images/Getty Images)

Second World War

7 things you didn’t know about Bletchley Park and Alan Turing

Spies through the ages podcast

General ancient history

Spies through the ages

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First World War

Money, love and revenge: the motivations of spies through history

Adolf Hitler is welcomed by supporters at Nuremberg, 1933. (Photo by Hulton Archive/Getty Images)

Second World War

Enigma before Bletchley: the German spies who betrayed Hitler

7th January 1926: Bletchley Park, Buckinghamshire, HQ of the Allied cryptopgraphers during WW II and where the German 'Enigma' and 'Lorenz' codes, both considered unbreakable, were deciphered. (Photo by Evening Standard/Getty Images)

Second World War

7 phases of the history of Artificial intelligence

Bletchley Park

Second World War

The Library WW2 espionage: The spies who surprised me

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Second World War

World War Two spies and an extraordinary naturalist

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The ultimate guide to the history of spies

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Second World War

Turing’s Cathedral: The Origins of the Digital Universe