For a state traditionally characterised by the stability and continuity of its political institutions, the United Kingdom has undergone a remarkable period of rapid institutional change in recent times. This title monitors these changes and provides the most comprehensive, up-to-date analysis of the major institutions at work in the United Kingdom in the 21st century. It provides an accessible and detailed account of how political institutions work, and also encourages students to consider how institutions can be conceived - and institutional development located - within broader patterns of social, political and economic change and developing inter-institutional interactions. The book offers fresh perspectives on the UK's political system, derived from a detailed understanding of the structures and norms of major political institutions.