Brick Court Chambers

Over his 27-year career, Mark has acted as counsel or arbitrator in approximately 100 international disputes across Western and Eastern Europe, Asia, the Middle East, and North and South America. Recent career highlights include representing United Group as lead counsel in an ICSID arbitration against the Republic of Serbia, and Cairn Energy in an UNCITRAL arbitration against the Republic of India—resulting in a recovery of over US $1 billion. He also represented Areva SAS in a complex, long-running dispute against Finnish utility TVO concerning nuclear power plant construction, and was part of the team (led by Emmanuel Gaillard) that represented the majority shareholders in Yukos in an investment claim against the Russian Federation.

Mark brings unique expertise from his four years in the Office of the Legal Adviser at the US Department of State, where he represented the United States in investment treaty disputes. He has extensive experience under all major arbitration institutions and rules, including the ICC, LCIA, SCC, SIAC, Swiss Chamber of Commerce, DIS, HKIAC, LMAA, AAA/ICDR, JAMS, CPR, ARIAS, ICSID and UNCITRAL, and regularly sits as arbitrator. He also regularly appears in court on arbitration-related matters, including enforcement proceedings.

Mark is admitted to practise in New York (1998), Paris (2014), and England & Wales (solicitor 2016, barrister 2025). For 14 years, he has lectured on international investment arbitration at Sciences Po Law School in Paris.

Call: 2025

New York University School of Law, J.D., 1998 - Editor-in-Chief, Journal of International Law & Politics

Johns Hopkins University School of Advanced International Studies, M.A., International Law & Economics, 1995 - Colgate University, B.A., English Literature, 1989

Admitted to practice before the bars of New York, England & Wales and Paris.

Fellow, Chartered Institute of Arbitrators

Sciences Po Law School, Paris, Visiting Lecturer, Investment Treaty Arbitration, 2011-present

CPR Institute for Dispute Resolution, European Advisory Board Member, 2015-present