From Alan Turing and his team of codebreakers at Bletchley Park, to one of the most successful Soviet spy rings in Cold War Britain, to modern-day cyber-crime, Top Secret explores over a century's worth of communications intelligence through hand-written documents, declassified files and incredible artefacts from GCHQ's and the Science Museum Group's historic collections. https://www.scienceandindustrymuseum.org.uk/whats-on/top-secret
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