 He was appointed to a lectureship at the University of Bristol in 1988 and in 1999 was appointed Professor of Public International Law.He was Head of the School of Law 2003-05 before becoming Dean of the Faculty of Social Sciences and Law.He is a member of the Organization for Security and Co-operation in Europe Advisory Panel on Freedom of Religion and Belief; the International Law Association Human Rights Law and Practice Committee; and the Board of Management of the Association for the Prevention of Torture.