Think there was a case where the disestablishment (or lack of it) of the church was held crucial as went Human Rights, as it was held to still be part of the state and hence must be none-discriminatory... or i could just be talking *******s.
Constitutional Law is alright, and can be very interesting, but is based far too much on textbooks and not enough on cases for my liking. Its the UK, Parliament can do whatever the hell it wants, get over it!