Department profile
Three Crowns LLP

Public International Law

UK Guide 2026 : UK-wide

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Three Crowns LLP

Rankings

Chambers Review

Provided by Chambers

Public International Law - UK-wide

Band 3

What the Team is Known For

Three Crowns is a specialist arbitration firm with a strong pedigree in PIL 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.

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Work Highlights

Provided by Chambers

  • Three Crowns represented ConocoPhillips in ICSID arbitration proceedings against Venezuela where the firm successfully defended against the annulment of the USD8 billion arbitration award.

Notable Practitioners

Provided by Chambers

  • Constantine Partasides
    Constantine Partasides

    Constantine Partasides

    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.

    • He is a class act, very gifted and an eloquent speaker.

      Public International Law respondentUK
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  • Gaëtan Verhoosel
    Gaëtan Verhoosel

    Gaëtan Verhoosel

    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.

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Ranked Individuals at Three Crowns LLP (2)

UK-wide

Three Crowns LLP has rankings in the following guides

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