Philippa Webb

Philippa Webb is Professor of Public International Law at the Blavatnik School of Government and an Associate Member of the Faculty of Law. She is a Fellow of Exeter College, Oxford.

Her research interests span all of Public International Law, with particular expertise in State and diplomatic immunities, international dispute settlement, human rights, international organizations law,  international humanitarian law and international criminal law. Philippa has extensive experience in international and national courts, with prior roles including Special Assistant and Legal Officer to Judge Rosalyn Higgins GBE QC during her Presidency of the International Court of Justice and legal adviser to the Chief Prosecutor at the International Criminal Court. She is a barrister at Twenty Essex and appointed to the UK Attorney-General’s Public International Law Panel of Counsel. She regularly appears as counsel and advocate before the International Court of Justice, the European Court of Human Rights, the International Tribunal For the Law of the Sea, inter-State arbitral tribunals and the UK Supreme Court.

Her publications include: Freedom of Speech in International Law (2024, chapters on insulting speech and false speech, Amal Clooney & Lord David Neuberger KC, eds), The Right to a Fair Trial in International Law (2021, with Amal Clooney) Oppenheim’s International Law: United Nations (2017, with Dame Rosalyn Higgins GBE KC, D Akande, S Sivakumaran and J Sloan), The Law of State Immunity (2015, with Lady Fox KC),  and International Judicial Integration and Fragmentation (2012, 2015).