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Alan Turing: An exceptional man with a brilliant mind

From June 23, people will start to see the new £50 featuring Alan Turing’s as the notes enter general circulation.

Often considered to be the father of computer science, Mr Turing studied mathematics at King’s College, University of Cambridge.

In 1936 his work On Computable Numbers was seen as giving birth to the idea of how computers could operate.

His “Turing test” also examined the behaviour necessary for a machine to be considered intelligent – the foundation for artificial intelligence.

Alan Turing
Bank of England/PA

Mr Turing played a key role in cracking the Enigma code, which, it has been said, helped to shorten the Second World War by at least two years and saved millions of lives.

The Enigma enciphering machine, adopted by the German armed forces to send messages securely, was believed to be unbreakable as the cipher changed continuously.

Mr Turing was part of an Enigma research section, which worked in the stable yard at Bletchley Park.

The first wartime Enigma messages were broken in January 1940 and Enigma traffic continued to be broken routinely at Bletchley Park for the remainder of the war.

“Dr Alan Turing was an exceptional man with a brilliant mind,” Mr Grayling said previously.

James Turing, a great-nephew of Alan Turing, described the Bank of England’s new £50 note design as “an unbelievable honour” for his family.

Mr Turing, who runs the Turing Trust which refurbishes UK computers for use in African schools, told the BBC Radio 4 Today programme: “It is quite an unbelievable honour.

“It certainly highlights the enormity of Alan’s legacy, which hopefully we are doing something through the Turing Trust that he would be proud of in continuing to further enable access to a digital world.”

He added: “It’s been quite strange for me growing up – no-one knew who Turing was really, and then over the last 10 to 20 years, particularly with the film coming out – The Imitation Game – there seems to have been a lot more national recognition, particularly as the secrets of Bletchley Park have been revealed.

“It’s been quite a journey as Alan’s star continues to rise, which is wonderful for us.”