In this age of statutes and human rights the common law principle of legality has assumed a central importance. The principle holds that unless Parliament makes unmistakably clear its intention to curtail or abrogate a common law right, freedom or principle, the courts will not construe a statute as having that operation. As Lord Hoffmann famously observed, this "means that Parliament must squarely confront what it is doing and accept the political cost."

The principle of legality is now central to the operation of Australian and New Zealand public law. Yet its content, methodology and scope remain elusive and has never been examined in detail. This book fills that gap by drawing together leading judges, practitioners and scholars to explore a range of interesting issues and challenges for the application of the principle of legality and its future trajectory: How does the principle operate? Which rights and freedoms fall within its scope and why? What is its relationship to the (so-called) common law bill of rights? Has proportionality a role to play in its application? How, if at all, does it differ from the presumption with international law? And in the construction of statutes does the principle serve to fulfil or frustrate the will of Parliament?

Dr Dan Meagher is an Associate Professor in Law at Deakin University in Australia where he teaches and researches in constitutional law, human rights law and statutory interpretation. He has undergraduate degrees in law and economics and an LLM from Monash University, and was awarded a PhD from the University of New South Wales for his thesis on the intersection between freedom of speech and the regulation of racist speech in Australia. Dan is the comments editor for the Public Law Review.

Dr Matthew Groves is Professor of Public Law in the La Trobe University Law School and has published widely on public law. His best known work is the authoritative Australian judicial review study - Aronson, Groves and Weeks, Judicial Review of Administrative Action and Government Liability (Lawbook Co., 6th ed, 2017). His other books include Meagher and Groves (eds), The Principle of Legality in Australia and New Zealand (Federation Press, 2017) and Groves and Weeks (eds), Legitimate Expectations in the Common Law World (Hart Publishing, 2017). Matthew is also editor of the Australian Journal of Administrative Law, a fellow of the Australian Academy of Law and was a member of the Commonwealth Administrative Review Council.