The interesting part of the Clarke report, which is essential reading, is that in seeking to restore life and power to Parliament, there is an implicit argument against a bill of rights because such a bill would place certain areas of law beyond MPs' reach. That challenges the principle of parliamentary sovereignty. Power would pass to unelected judges. I have few problems with this, given the judiciary's record in standing up to Blair, but the loss of parliamentary sovereignty, even in its current limp manifestation, would be a profound change in our constitution and this needs care and consideration.
In the end, judicial enforcement of constitutional rules is all that separates the rule of law from an elective dictatorship. Jeffrey Jowell, UCL's professor of public law, believes that the courts already have the power to strike down unconstitutional legislation.