In this text, experts in the field of retail examine the effects of the contemporary growth in concentration in the European food retailing sector. In particular, the book develops a number of buyer power propositions and builds on the previous work of several of the authors, to consider how the growth of large supermarket chains affects competition in food retailing. The authors outline the theoretical and policy analysis underpinning the work and assess evidence on the size and growth of supermarket chains across the EU. Whilst not entirely critical, they suggest that there is strong evidence in some countries that supermarkets use their buying power to impose unfair terms and conditions on suppliers, particularly affecting small suppliers. The authors use case studies to provide in-depth analysis of four European countries, namely France, Germany, Spain and the UK. The book ends with a discussion of policy issues against a backdrop of likely future trends in concentration in this area.