He researches and teaches international law, human rights, children’s rights and public interest lawyering. He has published extensively in the area of human rights, including the recent work The Right to Health in International Law (2011, Oxford) and is also working on a comprehensive commentary to the Convention on the Rights of the Child with Professor Philip Alston. He is a member of several Advisory Committees and working groups for government agencies and NGOs and has provided human rights training and advice to organisations including UNICEF.