The UK after Brexit is the result of a cooperation between a group of leading academics from top institutions in the UK and beyond. It offers students, practitioners and scholars an authoritative, informative and thought-provoking series of analyses of some of the key challenges facing the UK legal system in and through the process of 'de-Europeanisation' - that is, in and through 'Brexit'. It provides discursive exploration of key issues and themes for reflection and debate within multiple areas of law, broadly divided into three main areas of interest: - constitutional concerns such as the relationship between Parliament and the Executive, the relevance of devolution, and the impact on the courts; - substantive topics including employment law, environmental law, financial services, intellectual property, and criminal cooperation; and - issues regarding the UK's external relations, for example its relations with the EU, membership of the World Trade Organization, ingredients for creating UK trade policy and bilateral investment policy, and international security (the UN, NATO and more). The structure of this work is specifically designed to offer the clearest presentation of these analyses and constitute a critical, comprehensive resource on the effects of de-Europeanisation on the UK legal system. These analyses will remain relevant over time – not only as the withdrawal process unfolds, but well into the future as the UK reorientates its legal system to new internal and external realities with contributions by Professor Catherine Barnard (University of Cambridge), Dr Aleksandra Cavoski (University of Birmingham), Professor Paul Craig (University of Oxford), Professor Marise Cremona (European University Institute), Professor Michael Dougan (University of Liverpool), Dr Michael Gordon (University of Liverpool), Professor Christian Henderson (University of Sussex), Dr Veerle Heyvaert (London School of Economics), Dr Thomas Horsley (University of Liverpool), Dr Joanne Hunt (Cardiff University), Dr Luke McDonagh (City University of London), Dr Gregory Messenger (University of Liverpool), Dr Marc Mimler (Bournemouth University), Professor Valsamis Mitsilegas (Queen Mary University of London), Professor Niamh Moloney (London School of Economics), Dr Stephanie Reynolds (University of Liverpool) and Dr Mavluda Sattorova (University of Liverpool). Michael Dougan is Professor of European Law and Jean Monnet Chair in EU Law at the University of Liverpool. He is an established academic authority on EU constitutional law and Joint Editor of Common Market Law Review—the world's leading scientific journal for European legal studies. Michael's work has also contributed to wider public and political debates about European law. For example, he has provided written evidence to numerous Parliamentary enquiries, appeared as an expert witness before various Parliamentary committees in both the House of Commons and the House of Lords, and provided external advice to a range of Government departments and Union institutions. Michael's public engagement activities, including videos of his lectures on the EU referendum, received extensive media attention in the run-up to the 'Brexit' referendum and he continues to be a popular authority on the matter for individuals and groups all around the world.