The fourth edition of this book, now co-authored by Ioannis Lianos, now includes substantially more matierial on UK competition law and on the economics of competition. Another new feature is greater introductory and analytical commentary, making this book suitable for use either as a stand-alone text and materials book, or as a book of materials to be used in conjunction with a second text. It will continue to be one of the best books for students coming to competition law for the first time. The materials have been completely updated to take into account all the recent developments in EC competition law including: the new Guidelines on the application of Article 81(3), Guidelines on the method of setting fines imposed pursuant to Article 23(2)(a) of Regulation No 1/2003, the Commission Notice on Immunity from fines and reduction of fines in cartel cases, DG Competition discussion paper on the application of Article 82 of the Treaty to exclusionary abuses, the Guidelines on the assessment of non-horizontal mergers, and extracts from the leading cases of Consorzio Industries, British Airways verses Commission, Microsoft Corp verses Commission, Deutsche Telekom AG verses Commission, and Bertelsmann AG/Sony Corporation of America verses IMP (Impala). As before the bulk of the text is made up of extracts from Commission Decisions, Opinions of the Advocates General at the ECJ, and judgments of the ECJ and CFI. These are supplemented by extracts from EC legislation, and comments, notes and questions prepared by the authors. The text is up to date as of June 2010. 'this is a book that every student, teacher, and practitioner of EC competition law will benefit from in one way or another. It is insightful and stimulating, astute in its choice of material, and because of the accompanying website it will remain up-to-date for a long time. What is more, it cannot be beaten at the price - as is becoming of a leading book on competition law' - Stefan Enchelmaier.