Thursday 10 September 2009 Treatment of Alan Turing was “appalling” - PM The Prime Minister has released a statement on the Second World War code-breaker, Alan Turing, recognising the “appalling” way he was treated for being gay. Alan Turing, a mathematician most famous for his work on breaking the German Enigma codes, was convicted of ‘gross indecency’ in 1952 and sentenced to chemical castration