Three Crowns has been recognised as a “Leading” firm in Leaders League’s Best Law Firms for International Arbitration 2021 – UK. Partners Constantine Partasides QC and Gaëtan Verhoosel were similarly distinguished, listed as “Key Figures” in International Arbitration.

Earlier this year, Three Crowns was recognised in other Leaders League rankings for International Arbitration, including as a “Leading” firm in France.

For more information, please click here.


Constantine, a partner in the firm’s London office, is recognised in all major directories and publications. Chambers UK lists him as a “Star Individual” in International Arbitration—one of only two lawyers with this ranking, he was named in the “Hall of Fame” for International Arbitration in the 2021 edition of The Legal 500 UK and has been ranked as one of the “Top 20” individuals in the world of commercial arbitration every year since 2011 by Who’s Who Legal.

Constantine is a co-author of the fourth, fifth, and sixth editions of the leading textbook on international arbitration, “Redfern and Hunter on International Arbitration.”

Constantine is a solicitor-advocate (Higher Courts Civil) and was appointed Queen’s Counsel in 2014. He was educated at King’s College, London, and Cambridge University.


Gaëtan, a partner in the firm’s London office, has served as an advocate and arbitrator in a large number of commercial and investment treaty arbitrations. These include many highly significant, widely reported matters with large financial recoveries at stake or novel legal issues involved.

Gaëtan is the Co-Chair of the IBA Arbitration Committee and was appointed to the ICSID Panel of Arbitrators by the Kingdom of Belgium. He teaches international investment law at King’s College School of Law in London

Gaëtan has been ranked as a leading arbitration practitioner in all major publications, including Chambers, The Legal 500, the Arbitration Powerlist 2019, and Who’s Who Legal. He has been recognised in Chambers as “terrific,” and Who’s Who Legal has noted that Gaëtan is recognised by his clients, peers, and opponents as “the number-one person I have ever encountered on the other side,” and that he is “impressive in every aspect.”

« Back