Jonathan Worboys > 4 New Square Chambers > London, England > Lawyer Profile

4 New Square Chambers
4 New Square

Living Wage


Jonathan has an international and domestic practice focusing on public international law, international arbitration, international criminal law and European law.

Jonathan acts as counsel in cases before international courts and tribunals (ICJ, ECHR, international criminal tribunals, LCIA, ICC, UNCITRAL etc.) and litigation before the English courts (High Court, Court of Appeal and Supreme Court). He also frequently acts as adviser to Governments and sub-State entities during complex international negotiations, peace processes and other high stakes international law advisory projects.

Jonathan is a Visiting Lecturer in public international law at King’s College London. He is a former Assistant Legal Adviser at the Foreign & Commonwealth Office and a leading expert in the peaceful resolution of major international and non-international armed conflicts.






Bachelor of Civil Law, University of Oxford (2011)

Bachelor of Laws, King’s College London (First Class Honours) (2009)

Lawyer Rankings

London Bar > Public international law

(Leading Juniors)Ranked: Tier 3

Jonathan Worboys4 New Square ‘Jonathan has an in-depth knowledge of international law. He is very creative in terms of constructing legal arguments. He is well liked by clients and teams alike. He is a persuasive and charming advocate.’

London Bar > International crime and extradition

(Leading Juniors)Ranked: Tier 3

Jonathan Worboys 4 New Square ‘Jonathan is an excellent technical lawyer, precise and thoughtful. His extremely easy manner is appreciated by clients and lawyers alike.’

London Bar > European Union law

(Leading Juniors)Ranked: Tier 3

Jonathan Worboys4 New SquareJonathan’s advice is always accurate and takes into account the bigger picture of an issue.