This paper seeks to explore the workability of the idea of interactive adjudication in the field of European primary law. It sets out some of the problems of so-called negative integration through ECJ jurisprudence on the fundamental economic freedoms, and argues that co-operation between the different levels of governance in the EC is required to provide the regulatory framework indispensable for transnational economic activity. Strengthening the European Union, it is submitted, will not necessarily mean 'more Brussels and Luxembourg'. To support this opinion, the De Agostini and TV-Shop case is examined in this light.
European Review of Private Law