Julian V. Roberts is Emeritus Professor at the University of Oxford and Executive Director of the Sentencing Academy. In 2022, he was appointed Kings Counsel (Honoris Causa) for his contributions to sentencing. In 2021, he was awarded the American Society of Criminology Sellin-Glueck Award for comparative criminal justice scholarship. Roberts was a member of the Canadian Sentencing Commission (1984-1987); the Sentencing Council of England and Wales (2010-2018); and a foreign advisor to the Model Penal Code Sentencing project. He has authored, co-authored, or edited thirty-four books on sentencing and criminal justice.Arie Freiberg is an Emeritus Professor at Monash University, Melbourne Australia. He was Foundation Chair and Head of the Department of Criminology (1991-2002) and Dean of the Faculty of Arts (2003) at the University of Melbourne and Dean of the Faculty of Law at Monash University (2004-2012).

He was the Inaugural Chair of the Victorian Sentencing Advisory Council(2004-2022) and Chair of the Tasmania Sentencing Advisory Council (2013-2021). He has authored over 190 publications in areas relating to sentencing, regulation, and non-adversarial justice.Rhys Hester is an associate professor at Clemson University where he teaches in the areas of criminal law, courts, and criminal procedure. He is the former Deputy Director of the Pennsylvania Commission on Sentencing. Hester is a contractor for the National Institute of Justice and the United States Department of Justice on a project related to the review and revalidation of the PATTERN risk assessment tool. His research has been published in Criminology, Journal of Quantitative Criminology, Crime & Delinquency, and Crime and Justice: A Review of Research.