Sonia Mazey is professor of public policy at the University of Canterbury and former pro-vice chancellor of its College of Business and Law. Her research interests include European comparative politics, European integration and the European Union policy process, and she has published extensively in these fields. Jeremy Richardson is an emeritus fellow of Nuffield College, Oxford, and an adjunct professor at the University of Canterbury. He is the founding editor of the 'Journal of European Public Policy', which he continues to co-edit. He has published widely on the UK policy process, Swedish policy-making and administration, the policy processes of the European Union and comparative policy styles.