The new edition of this eminent and authoritative work has been fully updated to encompass the major changes in substantive law, enforcement procedures and case law since the last edition. It examines the impact of modernization on enforcement by national authorities and courts, while coverage of national decisions post-modernization is integrated in the book, using information collated from a network of key correspondents in the Member States. Increased coverage of the new system has been introduced in particular within the chapter on the Community Context and the Role of Member States.There is a major new chapter on Market Definition, while coverage of Sectoral regimes and their relationship with competition law is consolidated into a single chapter which focuses in particular upon agriculture, energy, insurance, telecommunications, and transport.The comprehensive accompanying volume of European Community competition law materials has been fully updated to include all of the relevant legislation, Commission Notices and Guidelines, and as a new feature now provides detailed cross-references to the commentary in the main work.