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Three Crowns LLP

Arbitration (International)

Europe Guide 2026 : Europe-wide

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Three Crowns LLP

Rankings

Chambers Review

Provided by Chambers

Arbitration (International) - Europe-wide

Band 1

What the Team is Known For

Three Crowns' arbitration practice consists of market-leading, globally renowned practitioners in London and Paris who have an exclusive focus on international arbitration. The firm is revered for its excellence in both commercial and investor-state arbitrations under various rules and seats across Europe, including BIT and ECT. Three Crowns boasts notable expertise in cases arising from the energy and natural resources sector, including those relating to construction contracts, gas price reviews and disputed production-sharing contracts. The team also represents clients from the finance and technology sectors in arbitrations arising from supply agreements and joint venture disputes. The firm is frequently active in matters involving Latin America, Eastern Europe and the Middle East, predominantly acting for investors.

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Work Highlights

Provided by Chambers

  • Three Crowns represented the Republic of Finland in two ICSID arbitration arising under the ECT. One is brought by investors from EU Member States and the other by a UK-based company.

Strengths

Provided by Chambers

  • Three Crowns is an extremely flexible and business-focused counsel, juggling tremendous amounts of work and proactively considering the company's specific issues and priorities.

    Arbitration (International) respondentEurope

  • Three Crowns LLP has excellent commercial understanding of the business combined with strategic thinking. The team has quality lawyers at every level, makes it stand out.

    Arbitration (International) respondentEurope

Notable Practitioners

Provided by Chambers

  • Constantine Partasides
    Constantine Partasides

    Constantine Partasides

    One of Three Crowns' top London-based practitioners, Constantine Partasides KC is a towering figure in the arbitration world, frequently acting for multinational energy companies in highly sensitive investor-state disputes. He is also highly experienced in commercial arbitration.

    • Constantine provides excellent, thoughtful and strategic advice.

      Arbitration (International) respondentEurope

    • Constantine is without a doubt one of the best advocates of our age; a great orator who knows exactly how to deliver a case. He's got a very lovely and engaging style.

      Arbitration (International) respondentEurope
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  • Gaëtan Verhoosel
    Gaëtan Verhoosel

    Gaëtan Verhoosel

    Gaëtan Verhoosel KC boasts a wide practice, covering investor state and commercial arbitrations under ICC and ICSID rules across Europe. He is highly active in prominent construction and energy disputes.

    • Gaetan is incredibly knowledgeable and practical in his approach. He listens well to the changing temperaments of management and provides solutions as required.

      Arbitration (International) respondentEurope
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  • Georgios Petrochilos
    Georgios Petrochilos

    Georgios Petrochilos

    Paris-based Georgios Petrochilos KC is held in high esteem for his capabilities in European-wide gas price disputes as well as PCA-administered UNCITRAL arbitrations, wherein he acts for prominent energy and construction companies.

    • Georgios Petrochilos has impressive ability to present complex positions in a concise and effective manner.

      Arbitration (International) respondentEurope

    • Georgios Petrochilos is the doyen of gas price reviews and an all-around stellar advocate.

      Arbitration (International) respondentEurope
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  • Todd Wetmore
    Todd Wetmore

    Todd Wetmore

    Todd Wetmore is an experienced practitioner based in Paris who regularly handles complex construction arbitrations under ICC rules across Europe. He also has expertise in gas price disputes.

    • Todd Wetmore is a great advocate and down-to-earth lawyer with an incredible sense of the route of a case.

      Arbitration (International) respondentEurope

    • Todd Wetmore is very hands-on. He has a good grasp of the facts, laws, precedents and submissions from all parties, and is able to weave this seamlessly into the submissions.

      Arbitration (International) respondentEurope
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Ranked Individuals at Three Crowns LLP (4)

Europe-wide

Three Crowns LLP has rankings in the following guides

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