Re: 5x09 Cold Blood (Grading/Discussion) SPOILERS!!!
I have a sneaking suspicion that Moffat's pulling a Blakes 7 Orac/Redemption switch. It isn't our TARDIS.
If you have seen that episode of Blake's 7 you would know the main bad-guy in that arc was Orac itself, The Doctor vs. Orac........
Oh crap, the Doctor is doomed!
Laws only work if everyone is honest, no piece of paper is going to stop a truly deranged person from doing something atrocious.