"Unlike the United States and some other jurisdictions, the English doctrine of parliamentary supremacy means that the law does not know judicial review of primary legislation (laws passed by the Parliament of the United Kingdom), except in a few cases where primary legislation is contrary to the law of the European Union."
But not the whole story - the UK has jury nullification[0], last tested in the aftermath of the Falklands War. The "few" cases include laws in contravention of the Human Rights Act, which has been used to get judicial review (not necessarily successfully) of issues such as "do prisoners have a right to hardcore pornography", "does a university fee of more than £3000/year act as a barrier to education", and "what is the legal right to privacy"--i.e. a fairly large surface area.
"Unlike the United States and some other jurisdictions, the English doctrine of parliamentary supremacy means that the law does not know judicial review of primary legislation (laws passed by the Parliament of the United Kingdom), except in a few cases where primary legislation is contrary to the law of the European Union."
http://en.wikipedia.org/wiki/Judicial_review_in_English_law