Mark was educated in Fiji and England (Grenville College, University of Essex, University College London) and is an experienced international human rights defender and expert in the prevention of torture.
He was the co-chair of the cross regional expert driven process to draft and adopt (in 2021) the ‘Principles on Effective Interviewing for Investigations and Information Gathering’. He is the former Secretary General of the Association for the Prevention of Torture (2001-2018) and lead actor in the adoption and international implementation of the Optional Protocol to the Convention against Torture (OPCAT). Successful advocate for the drafting and adoption of the UN Declaration on Human Rights Defenders and the creation of a related Special Mechanism.
Mark is a promoter of national solutions to strengthen the rule of law based on international human rights norms and is former staff of: Amnesty International, International Service for Human Rights, World University Service, Tower Hamlets International Solidarity, and the Nicaragua Solidarity Campaign.