The Computer Age Dawns!

Some of the boldest early steps into the computer age were taken in Britain. Alan Turing, the father of modern computing, did his main work at Cambridge University before joining the team of code-breakers at Bletchley Park near Milton Keynes.

First electronic computer (1943) : The building of Colossus
By designing a huge machine now generally regarded as the world's first programmable electronic computer, the then Post Office Research Branch played a crucial but secret role in helping to win the Second World War. The purpose of Colossus was to decipher messages that came in on a German cipher machine, called the Lorenz SZ.

via connected earth