Professor Philippa Webb

Professor of Public International Law, King’s College London; Barrister, Twenty Essex

Philippa’s practice covers all aspects of public international law. She acts for states and private entities in domestic and international courts on a wide range of issues. These include state and diplomatic immunities, territorial and maritime boundaries, treaty obligations, law of the sea, state responsibility, human rights, humanitarian law, law of international organisations and international criminal law.

She has been described as “the foremost expert on state immunity” and is counsel in ground-breaking cases in international and English courts. Philippa advises on all aspects of immunity, including immunity from enforcement, diplomatic status, and related concepts such as act of state. She is appointed to the Attorney General’s Public International Law B Panel of Counsel.

Philippa is a specialist in relation to the International Court of Justice (ICJ). She served as the Legal Officer and Special Assistant to Judge Rosalyn Higgins GBE KC during her presidency and in this capacity was involved in 15 inter-state cases. Philippa has since appeared as counsel and advocate in 7 ICJ cases. Philippa has also worked as a legal adviser at the ICC.

She is Professor of Public International Law at King’s College London and Director of the Centre for International Governance and Dispute Resolution. She has held visiting positions at the University of Oxford, the Graduate Institute in Geneva, the University of Notre Dame and Université Paris Nanterre. She is on the Committee of Legal Experts for the Commission of Small Island States on Climate Change and International Law.

Philippa was shortlisted for 2022 “Barrister of the Year” by The Lawyer. She has been ranked as a top junior in Public International Law, a ‘Future Leader’ in arbitration and a ‘UK Bar: Rising Star’.