The new Alan Turing £50 banknote entered circulation on June 23, 2021 to coincide with the Bletchley Park codebreaker’s birthday. The new £50 note features a portrait of Alan Turing, the WWII codebreaker and computer pioneer. When viewed through Snapchat the dials of his bombe machine begin to turn. (Photo by Mikael Buck/Snapchat/PA Wire Press Association)
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