Philip Booth is Reader in Town and Regional Planning at the University of Sheffield, UK.

Michèle Breuillard is a Research Fellow at the Centre for Administrative, Political and Social Studies and Research (CERAPS), University of Lille 2, and the National Centre for Scientific Research (CNRS), France.

Charles Fraser is the former Head of Town Planning at London South Bank University, UK, and is currently a Visiting Fellow of the University.

Didier Paris is Professor of Planning at the Science and Technology University, Villeneuve d'Ascq, Lille, France.