In this provocative new study, Iain McLean argues that the traditional story of the British constitution does not make sense. It purports to be both positive and normative: that is, to describe both how people actually behave and how they ought to behave. In fact, it fails to do either; it is not a correct description and it has no persuasive force. The book goes on to offer a reasoned alternative. The position that still dominates the field...