This book addresses an issue of paramount importance concerning the politics of the European Union: aspects of governance and policy making in the EU that are labelled ‘informal’. Much of the literature on the EU focuses on the formal facets of EU politics, but uniquely, the subject matter within this book deals with informal aspects such as: the role of personal relationships, the presence of non-hierarchical policy-networks and non-institutional channels of interest representation, and the relevance of the unwritten rules and routines which govern these aspects of EU politics.