The family of Wilmslow codebreaker Alan Turing will visit Downing Street on Monday to demand the Government pardons 49,000 other men persecuted like him for their homosexuality.
Turing, whose work cracking the German military codes was vital to the British war effort against Nazi Germany, was convicted in 1952 for gross indecency with a 19-year-old man.
He was chemically castrated, and two years later died from cyanide poisoning in an apparent suicide.
He was given a posthumous royal pardon in 2013 and campaigners want the Government to pardon all the men convicted under the same outdated law.
Turing's great-nephew, Nevil Hunt, his great-niece, Rachel Barnes, and her son, Thomas, will hand over the petition, which was signed by almost half-a-million people.
"I consider it to be fair and just that everybody who was convicted under the Gross Indecency Law is given a pardon.
It is illogical that my great uncle has been the only one to be pardoned when so many were convicted of the same crime.
I feel sure that Alan Turing would have also wanted justice for everybody."
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