Well, I must admit that, when I wrote about the petition for an official apology, I thought that the chances of success were small, but Gordon Brown has indeed apologised, on behalf of the UK government, to Alan Turing for inhumane treatment. Here is the full text.
Interestingly, the Guardian writes that Turing "has no known surviving family". That apparently, is not true. John Graham-Cumming (the originator of the petition) has been contacted by direct descendants of Turing’s elder brother.