This text investigates the foundational legal framework, institutional structure, and judicial processes governing the European Union. Paul Craig and Gráinne de Búrca, both distinguished scholars in the field of European law, synthesize complex legislative acts, landmark case law, and academic commentary to provide a comprehensive overview of the EU legal order. The book employs a structured approach to explain how EU law interacts with the domestic legal systems of member states, particularly within the context of the United Kingdom.

Legal scholars and practitioners widely recognize this work as a foundational text for students and professionals navigating the complexities of European Union law. Readers frequently note the academic density of the prose and the rigorous selection of case materials as key strengths for advanced study.