Jonathan has a versatile practice covering all aspects of public international law, European law and commercial law. Since joining the Bar, Jonathan has:
- acted as counsel or legal adviser to States, corporations, private individuals and NGOs in some of the most significant legal matters of the day (e.g. Brexit, the ICJ Chagos Request for an Advisory Opinion and Micula v Romania enforcement proceedings);
- represented clients in cases at all levels of the English courts (High Court, Court of Appeal and Supreme Court);
- represented clients before arbitral tribunals under most of the major arbitral rules (e.g. ICC, UNCITRAL, LCIA);
- acted against States in arbitration enforcement matters before the English Courts;
- acted for Governments, opposition groups and private parties during multiple high stakes international negotiations, peace processes and cases before the UN (e.g. cases before the UN Working Group on Arbitrary Detention, UN Special Rapporteurs and Universal Periodic Reviews); and
- been engaged by the Foreign & Commonwealth Office to advise on a continuing basis as an Assistant Legal Adviser for more than two years.
Jonathan is ranked in Legal 500 for his work on Brexit and European law where he is commended by Silks for “the way he sparks off ideas”. His international criminal law work with the Public International Law & Policy Group on the Rohingya has recently been cited by the International Criminal Court more than 20 times during the Court’s Decision Pursuant to Article 15 of the Rome Statute on the Authorisation of an Investigation into the Situation in Bangladesh/Myanmar, and was cited by the Prosecutor more than 50 times in her request to commence an investigation.
Jonathan is a Visiting Lecturer in public international law at King’s College London. He has published and spoken widely on a variety of areas within international law.