Alan M Turing and colleagues working on the Ferranti Mark I Computer, 1951.
© Science Museum / Science & Society Picture Library
Ferranti, a weapons and electronics company, was commisioned by the British government to manufacture this computer. It was based on a prototype known as the Manchester Mark I, which was built at Manchester University in 1946 under the supervision of Profesor Max Newman. Alan Turing had previously been involved with the construction of the ACE (Automatic Computing Engine) at the National Physical Laboratory, and with the construction of 'Colosus', the world's first electronic programmable computer, built at Bletchley Park, Buckinghamshire, during WWII.