Jim Fraser is Professor of Forensic Science and Director of the University of Strathclyde’s Centre for Forensic Science, Chair of the European Academy of Forensic Science and Associate Director of the Scottish Institute for Policing Research.Robin Williams is Professor Emeritus in the School of Applied Social Sciences at Durham University, Professor in the School of Applied Sciences at Northumbria University, and co-author (with Paul Johnson) of Genetic Policing (Willan Publishing, 2008).