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It is 100 years this week since the birth of the revered wartime codebreaker Alan Turing, and 67 years since he was awarded an OBE for leading the team, in Bletchley Park's Hut 8, that cracked the German navy's Enigma code. It has also now been 60 years since he was convicted for gross indecency, after admitting to being in a consensual same-sex relationship, and sentenced to chemical castration by means of regular injections of oestrogen, as an alternative to time in prison. It's 58 years to the month since he killed himself, and just less than three years since a British prime minister saw fit to issue an official apology for his treatment.