As a codebreaker at Bletchley Park during the Second World War ... she remained silent about her work as part of a team using the Bombe machine created by computer science pioneer Alan Turing.

Peter Westcombe, founder of the Bletchley Park Trust, explains in detail ... He took the lead in a team that designed a machine known as a bombe that successfully decoded German messages.

Ms Doll had worked as a Hollerith Operator at Bletchley Park and, after the war ... They invented devices known as Bombe ...

The first Bombe here, designed by computing ... Germany's Enigma machines could not withstand the computing power of Bletchley Park's Bombes. (Credit: Rob Pegoraro) Then and now, sloppy ...