To take another "classic"example the Guidford 4 were all found guilty of Murder in 1975 and would have been hung if the death penalty had existed this apology would have been cold comfort then

On 9 February 2005, Prime Minister of the United Kingdom Tony Blair issued an apology to the families of the eleven people imprisoned for the bombings in Guildford and Woolwich, and those related to them who were still alive, by saying, in part: "I am very sorry that they were subject to such an ordeal and injustice... they deserve to be completely and publicly exonerated."[11]

http://en.wikipedia.org/wiki/Guildfo..._Maguire_Seven