He has been playing an active role within the scientific community with the presentation of research findings at various international symposia (for instance in Spain, The Netherlands, Hungary, Australia, USA, Rwanda, Canada, Japan and South Africa). He has been invited as a visiting professor to the Faculties of Law, University of Valencia (Spain) and Universita degli studi di Bari (University of Bari, Italy), and Leuven Institute of Criminology (LinC), Catholic University of Leuven (Belgium). In addition, he has presented guest lectures in Criminology and Victimology at the University of Indonesia and Monash University (Australia).
Prof Peacock continues with his research as a participant on the Research Line on Political Crimes, Human Rights and Human Security, Catholic University of Leuven (Belgium) and has been for a number of years a permanent resource faculty member of the Postgraduate Courses of Victimology, Victim Assistance and Criminal Justice in Dubrovnik, Croatia where he regularly presents lectures.
Prof. Peacock is the organiser and course co-director of the annual International African Postgraduate Course of Victimology, Victim Assistance and Criminal Justice. He has been the recipient of a number of awards (for instance, twice a recipient of honorary academic colours from the University of Pretoria, Promedia Publication Awards, study and teaching awards and special certificate of Appreciation awarded on the occasion of the 8th International Symposium on Victimology (Australia) by his Hon. C.J. Sumner (president of the World Society and Australasian Society of Victimology).
He is the author of diverse publications (in English, Spanish and Afrikaans) in the fields of criminology, victimology, law, social and criminal justice. He enjoyed ministerial appointment as a National Chairperson of the Correctional Supervision and Parole Boards of South Africa and furthermore testifies regularly as an expert witness in both lower and high court criminal cases. He served as the key commentator on a crime documentary television series, Solving It, commissioned by the National Broadcaster.
Presently, Prof Peacock serves on the Executive Committee of the World Society of Victimology. He also serves regularly on the scientific committees of international and local conferences and as an editorial board member of the international scientific journals Quaderni del Dipartimento di Bioetica (Italy), Temida (Serbia), Ethnicity and Criminal Justice (USA). Prof Peacock served for a number of years as the editor of the accredited and peer reviewed Southern African journal of Criminology, Acta Criminologica and is presently the editor of the text Victimology in South Africa.