They have already issued a full apology (http://www.telegraph.co.uk/news/politics/gordon-brown/617011...) which contains the following - "While Turing was dealt with under the law of the time, and we can't put the clock back, his treatment was of course utterly unfair, and I am pleased to have the chance to say how deeply sorry I and we all are for what happened to him. Alan and the many thousands of other gay men who were convicted, as he was convicted, under homophobic laws, were treated terribly."
I must say that the leading "While Turing was dealt with under the law of the time" qualification leaves a particularly unpleasant taste in my mouth. I am forced to agree with bad_user in this case.
I think that qualification is actually important: it was the law that was unjust, not just society. A government apology should acknowledge that it was the government that caused the problem there, not some random vigilantes. The full problem was not just that he was treated horribly, but that his treatment was not only legal but also actively enforced by the law.
While I concede it is possible that was the intent of that line, I think there could have certainly been a better way of conveying that rather point. Particularly, they could have plainly stated "the law itself was unjust", and dropped that weird "While...".