There is no doubt that the current scrutiny and debate on the UK relationship with the European Union has seen the topic dominate the political landscape. Though the debate about withdrawal or renegotiation will be a primarily political and economic one, either outcome would be defined in substance by a legal process. Inevitably, the answers to key political and economic questions will be dependent upon the legal framework. This book will offer a close examination of the legal issues at the core of the UK's relationship with the EU to show how they will inform and influence that relationship's future evolution. Written by one of the key commentators in the field, it will appeal to academics and practitioners. In addition, given the importance and topicality of the subject, it should also appeal to a non-legal readership.