Guglielmo Verdirame’s practice covers all aspects of public international law and international arbitration. He is recognised as one of the leading practitioners in the field by the main legal directories.
Guglielmo acts as counsel in cases before English courts, international courts (including the International Court of Justice and the International Tribunal for the Law for the Law of the Sea); and arbitral tribunals (ICSID, ICSID-Additional Facility, PCA, UNCITRAL, ICC, SCC, LCIA, Court of Arbitration for Sport).
He is also regularly instructed in an advisory capacity. His clients include governments, companies, international organisations, non-governmental organisations and individuals.
Guglielmo is a member of the Attorney General’s A Panel of Counsel in Public International Law. A Panel members represent the UK Government in “the most complex public international law cases in various courts”. In this capacity Guglielmo has been instructed to appear before the International Court of Justice, the UK Supreme Court (in the “Article 50 case”), the Court of Appeal and the High Court.
His cases have involved legal issues across the full breadth of public international law: treaty interpretation; immunities and privileges (e.g. State Immunity Act, the Vienna Convention on Diplomatic Relations, the Conventions on Privileges and Immunities of the UN and Specialised Agencies); investment (both BITs and ECT); trade (WTO, both GATT and GATS); human rights (e.g. HRA, ECHR, EU Charter on Fundamental Rights, ICCPR, Inter-American Convention on HR, OECD Guidelines for Multinational Enterprises); law of armed conflict and national security; UN Convention on the Law of the Sea Law of the Sea; and boundary disputes between States. In his international arbitration practice, Guglielmo has dealt with a wide range of questions including in relation to contract interpretation and applicable law, treaty/contract relationship, enforcement of awards, procedural and evidential matters, and legal/evidential issues around damages assessment.
Guglielmo is Professor of International Law at King's College London. He has published extensively in the areas of public international law, international arbitration, and comparative public law.