Zachary Douglas QC > Matrix Chambers > London, England > Lawyer Profile

Matrix Chambers
Matrix Chambers


Barrister specialising in public international law, conflict of laws and arbitration. Counsel in cases before the International Court of Justice, European Court of Human Rights and other international courts and tribunals, and in investment treaty arbitrations and commercial arbitrations under the ICC, LCIA, SCC, UNCITRAL and ICSID arbitration rules. Arbitrator in more than 40 investment treaties and commercial arbitrations. Counsel in cases before the English courts on questions of international law. Formerly counsel to the IOC on all arbitrations arising from the Olympics. Professor of international law at the Graduate Institute in Geneva. Formerly lecturer in public international law at Cambridge University and Fellow of Jesus College.


Practised for several years in international arbitration and public international law at Freshfields Bruckhaus Deringer in Paris. Author of ‘International Law of Investment Claims’ (CUP 2009) and numerous chapters and articles on topics of international law.


Russian, French.


University of Melbourne (BA; LLB Hon); Oxford University (BCL; Proxime Accessit Vinerian Scholar); Cambridge University (MA; PhD).

Lawyer Rankings

London Bar > Public international law

(Leading Silks) Ranked: Tier 2

Zachary Douglas QCMatrix ChambersHis knowledge of international and investment law is second to none.

Matrix Chambers is an ‘excellent chambers for State-to-State public international law disputes‘ and members such as Zachary Douglas QC are also noted for their strong expertise in investment treaty claims. Clients commend the ‘very professional and well-run‘ set and its ‘highly engaged and accommodating clerks‘. It retains a strong stable of PIL specialists working at the intersection of commercial and public law. Highlights include Blinne Ní Ghrálaigh‘s advice to the Republic of Macedonia regarding its treaty negotiations with Greece. Philippe Sands QC also led Jessica Jones in The Gambia v Myanmar before the ICJ.

London Bar > International arbitration: counsel

(Leading Silks) Ranked: Tier 2

Zachary Douglas QCMatrix ChambersOne of the most impressive advocates I have worked with in recent times – articulate, concise and robust.

London Bar > International arbitration: arbitrators

(Leading counsel as arbitrators) Ranked: Tier 1

Zachary Douglas QCMatrix ChambersThe cream of the international crop – Zac is always well prepared; he listens carefully; and he considers what he has heard conscientiously, and he starts off with an encyclopaedic knowledge of investment law.