Of 10 Colossus machines, only two survived the 1940s, only to be later dismantled in the 1960s. After starting work on a rebuilding project in the 1990s, engineer Tony Sale completed a 90 percent ...

GCHQ has released never before seen images of Colossus, the UK's secret code-breaking computer credited with helping the Allies win World War Two. The intelligence agency is publishing them to ...