Oswald Jansen is senior-researcher at the Centre for the enforcement of European law, G.J. Wiarda Institute, Utrecht University. He holds an LLM-degree of the University of Nijmegen and his PhD at the University of Amsterdam. His research interest in (public) law enforcement involves Dutch as well as foreign (mainly European) administrative law, Dutch as well as foreign (mainly European) criminal law and European law. He is also deputy judge at the Arnhem criminal court, as well as the ‘s-Hertogenbosch administrative law court, a member of the police complaints Committee of Amsterdam-Amstelland, chairman of the complaints commission Wijchen (http://www.wijchen.nl/) , and vice-chairman of the complaints commission Maasdriel.