Gaëtan Verhoosel KC > Three Crowns LLP > London, England > Lawyer Profile

Three Crowns LLP
New Fetter Place
8-10 New Fetter Lane

Work Department

International Commercial and Investment Treaty Arbitration


Gaëtan is a founding partner of Three Crowns. He has over 20 years of experience serving as advocate or arbitrator in both commercial and investment treaty arbitrations.


Before entering private practice, he served as a Legal Advisor at the World Trade Organization in Geneva, where he advised dispute settlement panels adjudicating disputes between sovereigns across a range of industry sectors.


English, Spanish, Dutch, French


Gaëtan is a past Senior Co-Chair of the Arbitration Committee of the International Bar Association – a leading standard-setter for the practice of international arbitration. He is a member of the SIAC Court of Arbitration and was appointed to the ICSID Panel of Arbitrators by the Kingdom of Belgium. He teaches at King’s College School of Law in London and Columbia Law School in New York.


Columbia Law School, J.S.D., 2001 – New York
Belgian American Educational Foundation Fellow

Columbia Law School, LL.M., 2000 – New York
Herman Finkelstein Fellow

Johns Hopkins University School of Advanced International Studies, Graduate Diploma in International Relations, 1997 – Bologna

Catholic University of Leuven, Lic. Jur., 1996 – Leuven
magna cum laude

University of Antwerp, Cand. Jur., 1993 – Antwerp
cum laude

Lawyer Rankings

Latin America: International firms > International arbitration

(Leading individuals)

Gaëtan VerhooselThree Crowns LLP

London > Dispute resolution > Public international law

Three Crowns LLP‘s esteemed track record includes representing both states and corporations in business-critical investor-state disputes, including a sizeable number of treaty cases. The London group is also increasingly active in state-to-state cases and related disputes that feature challenging international law points. Constantine Partasides KC‘s recent experience comprises the attainment of mega-value awards, and has a growing arbitration-related litigation practice; and Gaëtan Verhoosel acts in high-value treaty arbitrations across all continents, in relation to the power, oil and gas, renewables, banking and infrastructure sectors. Other key practitioners are Middle Eastern and African disputes expert Reza Mohtashami KCCarmen Martinez Lopez, who routinely acts in heavyweight Latin American investor-state cases; investor-state arbitration specialist Manish Aggarwal; and Leilah Bruton, who acts in treaty disputes. Counsel Hamid Abdulkareem leads the firm’s African practice, while senior associate Farouk El-Hosseny‘s practice incorporates telecoms and oil and gas sector-related investor-state claims.