A sophisticated, clear and engaging explanation of administrative law.Principles of Administrative Law offers a sophisticated yet clear account of what can be a dense and complex subject area. The principles, concepts and ways of thinking offered, provide pathways to a deeper understanding of the primary materials of administrative law, challenging readers to consider the role it plays in the control of public or governmental power in a contemporary setting. The book encourages critical reflection on the key questions: 'What is administrative law?', 'What does it do, and how?' and 'Why is it needed?'.This book is supported by Cases for Principles of Administrative Law; a volume which guides further reading and reflection and includes cases which illustrate the core concepts and principles of administrative law.New to this editionA new chapter on delegated legislationA reconceptualisation and restructure of the presentation of the law of judicial review to better explain the complex interrelations of judicial review jurisdiction, the scope of judicial review, and judicial review remediesAn increased emphasis on how administrative law develops and responds to changes in governanceExtensive revision of existing chapters including:the materiality condition for jurisdictional errorclarification of the nature of unreasonableness reviewanalysis of challenges arising from efforts to confer broad statutory powersincorporation of high-profile case studies in discussions of non-judicial mechanisms such as ombuds and freedom of information.