Three Crowns is pleased to announce that it has been named a “Significant Player” for the third year running in the India Business Law Journal (IBLJ) Report on the leading foreign law firms for India-related work, which draws on analysis of more than 600 law firms.

The fifteenth edition of the report, “Mapping Global Expertise”, noted that Three Crowns “has established itself as a pre-eminent law firm for international arbitration and public international law”, providing a “unique blend of experience, creativity, forensic skill, and advocacy”. A peer described Three Crowns as having a “top-notch, market-leading practice with some of the most respected senior partners”.

The report highlighted Three Crowns partners Constantine Partasides QCGaëtan Verhoosel, and Manish Aggarwal, along with counsel Leilah Bruton, as key members of the firm’s India practice.


Constantine, one of the founding partners of Three Crowns, has appeared as counsel in some of the largest international arbitrations of the last two decades. He is recognised in all major directories and publications. Chambers UK list 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 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 the co-author of the fourth, fifth, and sixth editions of the leading textbook on international arbitration, “Redfern and Hunter on International Arbitration”. He was appointed Queen’s Counsel in 2014.


Gaëtan is a founding partner at Three Crowns. He has served as advocate and as arbitrator in a large number of both commercial and investment treaty arbitrations.

Gaëtan is a past Senior Co-Chair of the Arbitration Committee of the International Bar Association, was appointed to the ICSID Panel of Arbitrators by the Kingdom of Belgium, and is a Member of the SIAC Court of Arbitration. He teaches at King’s College School of Law in London. Gaëtan has been ranked as a leading international arbitration practitioner in all major publications, including ChambersThe Legal 500The Legal 500’s Arbitration Powerlist 2019, and Who’s Who Legal.


Manish, a partner in the London office, is a dual-qualified English solicitor and Indian advocate. He has extensive experience of representing clients in both commercial and investment treaty arbitrations across a broad range of sectors (including energy, infrastructure, life sciences, telecommunications, and technology) and in arbitration-related court litigation.

Manish is consistently ranked as a leading practitioner in arbitration and public international law by major directories such as Who’s Who Legal and The Legal 500.


Leilah, counsel in the London office, has extensive experience representing corporations on the resolution of complex disputes involving investment treaties and contractual relationships. She has a particular focus on oil and gas disputes arising out of long-term production sharing agreements.

Leilah has been named a Who’s Who Legal: Future Leader for 2018-2021, a Rising Star in The Legal 500 UK 2021, and a Rising Star in The Legal 500’s International Arbitration Powerlist 2019.

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