is the Director of the UCL Institute for Human Rights and Reader in Philosophy of Law & Human Rights at University College London (UCL), Faculty of Laws. He is the co-editor of Current Legal Problems, published by Oxford University Press, the co-convenor of the Oxford-UCL Colloquium in Legal and Political and co-chair of the UCL Colloquium in Legal and Social Philosophy since 2006. His main areas of research are European human rights law, the philosophy of human rights, interpretation of human rights treaties, philosophy of private law, jurisprudence and political philosophy. He is the author of numerous articles and of the monograph A Theory of Interpretation of the European Convention on Human Rights (2009), Oxford University Press.