This is being rectified. There is a new Turing exhibit being planned and the official apology from Gordon Brown has been delivered to Bletchley Park and the people running Bletchley Park fully understand what's needed. I have been working with them on wording for the part talking about the apology.

I have posted a link to the actual apology document that will be displayed at Bletchley Park here: http://news.ycombinator.com/item?id=2767301