" I'm waiting for someone to tell me why legislating on human rights should be any different."
If you cannot appreciate the pitfalls of Westminster imposing legislation that flies against the will of the majority party there is no real point in discussing it further with you. Surely you can understand the way that a court determining the need for abortion on the basis of human rights abuses smooths the path of future legislation as opposed to an arbitrary decision to impose legislation from outside.

As far as I am aware the UK has always modified legislation to comply with human rights determinations.