Analysed from a comparative perspective, with a special focus on the German, Italian and UK legal order. The interaction between EU law and national law raises a number of both theoretical and practical questions. The book deals with a special aspect of the interplay between EU law and domestic law: 'spillover effects' from EU law into the Member States' national legal systems. This phenomenon, that it is still largely unexplored, is analysed from a comparative perspective, with a special focus on the German, Italian and UK legal order.