Photo: Hut 3 at Bletchley Park, Buckinghamshire in 1942. Here, civilian and service personnel worked together at code-breaking top-secret military communiques between Hitler and his armed forces.

The National Museum of Computing has unveiled renovations to keep out the rain and smartening up H block as celebrations take place to mark the 80th anniversary of the Colossus II computer.

Bletchley Park in Buckinghamshire was Britain's main decryption establishment during World War Two. Ciphers and codes of several Axis countries were decrypted including, most importantly ...