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Dr Stephen Allen is a Senior Lecturer in Law at Queen Mary, University of London, and a Barrister (Door Tenant) at 5 Essex Chambers. He was called to the Bar in 1992 (Inner Temple).
Between 2022 and March 2026, he was Senior Counsel at Albertson Solicitors (14 Old Square, Lincoln’s Inn). In this role, he was engaged in sovereign advisory work involving various aspects of Public International Law (including Jurisdiction/Immunities, Treaty Law, International Human Rights Law, and the Law of International Organisations).
His expertise also extends to territorial and maritime disputes (including land boundary claims and maritime delimitation).
Dr Allen has written several monographs on International Law, including: Allen & Trinidad, The Western Sahara Question and International Law (Routledge, 2024); Allen, The Chagos Islanders and International Law (Hart, 2014); and Castellino & Allen, Title to Territory in International Law: A Temporal Analysis (Ashgate, 2003).
He has co-edited several books, including: Western Sahara in the International Legal Order (Brill, 2026); The Oxford Handbook of Jurisdiction in International Law (OUP, 2019); The Rights of Indigenous Peoples in Marine Areas (Hart, 2019); Fifty Years of the British Indian Ocean Territory: Legal Perspectives (Springer, 2018); and Reflections on the UN Declaration on the Rights of Indigenous Peoples (Hart, 2011). He has also published numerous articles in leading international law journals and periodicals.
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