ABSTRACT
This contribution will assess to what extent the UK can opt-in into EU agencies. It analyses the framework and conditions of third-country participation by emphasising that agencies serve EU policies and that third countries have committed to applying certain EU policies or participating in the EU internal market. Consequently, participation in EU agencies by outsiders are classified into four categories (sui generis participation under international law, semi-membership of Schengen third countries, EEA members without voting rights and observers). It will be assessed what conditions are connected to this participation and to what extent the UK fits in any of these categories.
