In February Justice Minister Lord McNally rebuffed a 23,000 signature petition for a pardon saying:
"A posthumous pardon was not considered appropriate as Alan Turing was properly convicted of what at the time was a criminal offense".
Over the course of 2012 Alan Turing's life, work and legacy has been celebrated throughout the world. There is no doubt that he made many remarkable contributions in many fields of science. Is it Turing's reputation that blemished by this criminal conviction — or is it instead the reputation of the society that treated homosexuals in such a barbaric way that suffers?"
Link to Original Source