“Turing was embraced for his brilliance and persecuted for being gay.

“Not only is it a celebration of his scientific genius which helped to shorten the war and influence the technology we still use today, it also confirms his status as one of the most iconic LGBT+ figures in the world. GCHQ Director Jeremy Fleming said: “Alan Turing’s appearance on the £50 note is a landmark moment in our history.

The binary code, once converted into ordinary decimal figures, will reveal a date held in special regard by Britain’s modern day cyber spies. Printed on the image of a line of ticker tape - denoting the paper tape used by code breakers in Bletchley Park during the Second World War - are a series of ones and zeros. However, if scrambling the nation’s brains over the breakfast table was not enough, a further puzzle based on the life of the father of modern computing is actually contained on the note itself. The 12-part puzzle on GCHQ’s website is based on imagery and wording from the new £50 note, unveiled this morning by the Bank of England. GCHQ has released its 'toughest ever puzzle' to commemorate the launch of the new Alan Turing £50 note.

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