Jacques de Maillard is Professor of Political Science at the University of Versailles-Saint-Quentin and at Sciences Po Saint Germain-en-Laye, and director of the CESDIP (a research centre affiliated to the CNRS, the French Ministry of Justice, the University of Versailles-Saint-Quentin and CY Cergy Paris Université). His interests lie in the questions of local governance of security, the comparative study of policing in Western countries and plural policing.

Sebastian Roché is CNRS (National Center for Scientific Research) Research Professor at Sciences Po / University of Grenoble Alpes, Pacte research unit. He is the European Editor of Policing and Society. He specializes in comparative governance of police systems and of policing practices.