Elizabeth Aston is Professor of Criminology at Edinburgh Napier University, UK, and the Director of the Scottish Institute for Policing Research.Sofie De Kimpe is full time Professor of Criminology at the Department of Criminology at the Vrije Universiteit Brussel (VUB), Belgium and was Chair of the EU COST Action on Police Stops.János Fazekas is Associate Professor at ELTE University, Budapest, Hungary. He was co-leader of the Governance Working Group of the EU COST Action on Police Stops.Genevieve Lennon is Senior Lecturer in Law at the University of Strathclyde, UK. She was co-leader of the Governance Working Group of the EU COST Action Police Stops.Mike Rowe is Lecturer in Public Sector Management at the University of Liverpool, UK, and was Vice Chair of the EU COST Action on Police Stops.