Not all member states are equally eager or able to participate in all aspects of integration, and the impact of EU policy on the member states varies across states and policy sectors. Whereas much of the literature on differentiated integration has focused primarily on formal opt-outs, this...

This paper reports a comparative study of the Environmental Regulatory Agencies in Norway, Denmark and Finland. Increasingly and relatively independently these agencies are taking part in transnational networks in the EU involving the European Commission. A strong informal penetration, fuelled...