European Union Law is an ideal text for general European courses at undergraduate level and a reference work for legal practitioners on points of principle. This book: provides a rigorously structured analysis of the institutional structure of the EU, its jurisdiction, its legal instruments and the main substantive principles underlying EU law; develops a detailed overview of EU substantive law and of the effect the various sources of EU law have within the legal order of every Member State; and, outlines the main elements of the Lisbon Treaty, among others.