The last two decades have seen momentous changes to the character of the European Union and its legal order. This volume provides a collection of essays examining the major developments in European Union law over the period. The essays are written in honour of Sir Francis Jacobs, who served as one of the British members of the European Court of Justice from 1988 to 2006. The contributors are distinguished figures drawn from a variety of backgrounds, including the national and European judiciaries, legal practice and the academic world.