Caroline Davies “Enigma codebreaker Alan Turing receives royal pardon” http://www.theguardian.com/science/2013/dec/24/enigma-codebreaker-alan-turing-royal-pardon
A pardon is normally granted only when the person is innocent of the offence and where a request has been made by someone with a vested interest, such as a family member. On this occasion, a pardon has been issued without either requirement being met.
There was mixed reaction to the announcement. Iain Standen, chief executive of the Bletchley Park Trust*3, said Turing was "a visionary mathematician and genius whose work contributed enormously both to the outcome of the war and the computer age".
He added: "The pardon gives further recognition for his outstanding contribution not only to second world war codebreaking but also the development of computing."
Dr Andrew Hodges*4, tutorial fellow in mathematics at Wadham College, Oxford, and author of the acclaimed biography Alan Turing: The Enigma, said: "Alan Turing suffered appalling treatment 60 years ago and there has been a very well intended and deeply felt campaign to remedy it in some way. Unfortunately, I cannot feel that such a 'pardon' embodies any good legal principle. If anything, it suggests that a sufficiently valuable individual should be above the law which applies to everyone else.
"It's far more important that in the 30 years since I brought the story to public attention, LGBT rights movements have succeeded with a complete change in the law – for all. So, for me, this symbolic action adds nothing.
"A more substantial action would be the release of files on Turing's secret work for GCHQ in the cold war. Loss of security clearance, state distrust and surveillance may have been crucial factors in the two years leading up to his death in 1954."
Writer David Leavitt*5, professor of English at Florida University and author of The Man Who Knew Too Much: Alan Turing and the Invention of the Computer (2006), said it was "great news". The conviction had had "a profound and devastating" effect on Turing, Leavitt said, as the mathematician felt he was being "followed and hounded" by the police "because he was considered a security risk".
"There was this paranoid idea in 1950s England of the homosexual traitor, that he would be seduced by a Russian agent and go over to the other side," Leavitt said. "It was such a misjudgment of Alan Turing because he was so honest, and was so patriotic."
Oliver Wright “Alan Turing gets royal pardon for 'gross indecency' – 61 years after he poisoned himself” http://www.independent.co.uk/news/people/news/alan-turing-gets-royal-pardon-for-gross-indecency--61-years-after-he-poisoned-himself-9023116.html
Steven Swinford “Alan Turing granted Royal pardon by the Queen” http://www.telegraph.co.uk/history/world-war-two/10536246/Alan-Turing-granted-Royal-pardon-by-the-Queen.html
*2:Royal pardonの定義は一応”an official order given by a king or queen to stop the punishment of a person accused of a crime”であるが（http://dictionary.cambridge.org/dictionary/british/royal-pardon）、日本語にどう訳せばいいものやら。
*6:Helen Davidson “Homosexuality illegal in 41 out of 53 Commonwealth countries – report” http://www.theguardian.com/world/2013/nov/10/homosexuality-illegal-in-41-out-of-53-commonwealth-countries-report