10 c) Baroness Vivien Stern, expert witness proposed by the Inter-American Commission and the representatives, is a Senior Research Fellow at the International Centre for Prison Studies, University of London. She provided her expert opinion on the international instruments governing detentions, the general conditions of detention in Barbados, prison conditions at Glendairy Prison and at Harrison’s Point Temporary Prison, and their compliance with international standards on the matter; d) Harold Hillman, expert witness proposed by the representatives, is the former Director of the Unity Laboratory of Applied Neurobiology and a physician at the Medical Foundation for the Care of Victims of Torture. He provided his expert opinion regarding death as a result of judicial hangings, from a medical perspective; e) Roger Hood, expert witness proposed by the representatives, is an Emeritus Professor of Criminology at the University of Oxford and Emeritus Fellow of All Souls College in Oxford. He provided his expert opinion regarding the evolution of state practice towards abolition of the death penalty and the status of the mandatory death penalty in retentionist states, and f) Deryk Simon James, expert witness proposed by the representatives, is a member of the Royal College of Pathologists and Senior Lecturer in Forensic Pathology at the Wales Institute of Forensic Medicine at Cardiff University. He provided his expert opinion regarding death by hanging, its history, variables that can influence the causes of death in the mechanism of hanging, review of evidence adduced in others cases, and the method of execution as applied in Barbados. 36. During the public hearing held in the present case, the Court heard the testimonies and the expert opinion given by the following persons: a) Adrian King, witness proposed by the Commission and the representatives, is an attorney at law and testified regarding the death penalty legislation and procedure in Barbados, the nature of mandatory sentencing, and the exercise of the prerogative of mercy in Barbados as applied in the present case and in other cases of which Mr. King has personal knowledge; b) Alliston Seale, witness proposed by the State, is an attorney at law of the Barbados Bar Association, and testified regarding the legal procedures followed in prosecutions for the crime of murder and the exercise of the prerogative of mercy in Barbados; c) John Nurse, witness proposed by the State, is the Superintendent of Prisons of Barbados’ Prison Service and testified regarding prison conditions at Glendairy Prison and at Harrison’s Point Temporary Prison, the role of police officers and of the Superintendent within such prisons, and the complaint procedures available in relation to conditions of detention, and d) Andrew Coyle, expert witness proposed by the Commission and the representatives, is Professor of Prison Studies at the School of Law in King’s College at London University and an advisor on prison matters to the United Nations and other international bodies. He provided his expert opinion regarding prison conditions at Glendairy Prison and at Harrison’s Point Temporary Prison, the fire that destroyed Glendairy Prison, and general prison conditions in other countries.