Join us in 2022 for a new exhibition exploring the fascinating world of codebreaking, ciphers and secret communications. Discover the story of Alan Turing and his team of codebreakers at Bletchley Park, learn the secrets of a Soviet spy ring in Cold War Britain, and see how modern-day cybercrime works. Top Secret explores over a century’s worth of communications intelligence through handwritten documents, declassified files and incredible artefacts from GCHQ’s and the Science Museum Group’s historic collections. Test your skills and challenge your friends and family to become codebreakers in our interactive puzzle zone. Trace the evolution of the gadgets and devices used to conceal and decode crucial messages. Hear from GCHQ staff doing top secret work to defend against terror attacks, and find out more about the challenges of maintaining digital security in the 21st century.