This study evaluates the oversight of national security and intelligence agencies by parliaments and specialised non-parliamentary oversight bodies, with a view to identifying good practices that can inform the European Parliament’s approach to strengthening the oversight of Europol, Eurojust, Frontex and, to a lesser extent, Sitcen. The study puts forward a series of detailed recommendations (including in the field of access to classified information) that are formulated on the basis of indepth assessments of: (1) the current functions and powers of these four bodies; (2) existing arrangements for the oversight of these bodies by the European Parliament, the Joint Supervisory Bodies and national parliaments; and (3) the legal and institutional frameworks for parliamentary and specialised oversight of security and intelligence agencies in EU Member States and other major democracies.

Annex B.I of the report (on page 350) "Parliamentary Scrutiny of Justice and Home Affairs Agencies" is written by Bruno DE WITTE and Jorrit J. RIJPMA. Based on research in the framework of the project 'EUDO Institutions'.