
Chambers Review
Three Crowns is a specialist arbitration boutique with a strong pedigree in public international law matters. The firm fields a bench of highly esteemed practitioners in this area, with experience advising on investor-state disputes arising from expropriation of assets, cancellation of concessions and licences, and the imposition of tax liabilities. It is particularly active representing clients in the extractive industries, as well as the construction sector, and is well versed in handling arbitrations according to ICSID, UNCITRAL and SCC rules.
Work Highlights
- Three Crowns represented ConocoPhillips in ICSID arbitration proceedings against Venezuela, arising from the expropriation of upstream assets in the Orinoco oil belt. The matter is valued at USD8 billion.
Notable Practitioners

Constantine Partasides KC is a highly esteemed practitioner with vast experience in investor-state arbitrations. He is well known for acting in high-value disputes under bilateral and multilateral investment treaties around the world.

Gaëtan Verhoosel KC serves as both advocate and arbitrator in a range of investment treaty arbitrations, particularly those conducted under ICSID rules. His practice in this area is also complemented by his academic background in international investment law.
Ranked Lawyers at
Three Crowns LLP
UK-wide

