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Three Crowns: A decade of excellence in global arbitration law

Three Crowns: A decade of excellence in global arbitration law


Founded in April 2014 by six esteemed practitioners, the firm has since established itself as a beacon of excellence in the practice of international arbitration and international law

From its inception, Three Crowns set out to redefine the standards of legal representation in complex international disputes. With a dedication to providing unparalleled advice and advocacy, the firm emphasised the importance of lean teams and hands-on partner involvement throughout the entire process. This commitment to excellence has been a driving force behind its success over the past decade.

Since its launch, Three Crowns has experienced remarkable growth, both in terms of sise and global presence. Starting with offices in London, Paris, and Washington DC, the firm has expanded its footprint to include Singapore in 2022 and Madrid in 2023. This strategic expansion has allowed Three Crowns to better serve its clients on a global scale and respond effectively to the evolving landscape of international arbitration.

Throughout its first decade, Three Crowns has had the privilege of representing leading multinational corporations and sovereigns in some of the most complex and high-profile international disputes. Whether in commercial arbitration, investor-state arbitration, public international law, or arbitration-related litigation, the firm has consistently delivered exceptional results for its clients.

This dedication to excellence has not gone unnoticed. Three Crowns has consistently been recognised as an industry leader in international rankings and directories. The firm has been awarded Band 1 status by Chambers & Partners, named a Tier 1 firm in Legal 500, and ranked among the top five firms in Global Arbitration Review's (GAR) ranking of the world's leading international arbitration practice groups.

One of the highlights of Three Crowns' first decade includes its involvement in several landmark cases, including a historic $8.5 billion ICSID award, a $2 billion ICC award, and a $2.5 billion ad hoc award. Additionally, the firm has appeared before prestigious courts such as the US and UK Supreme Courts and the Paris Court of Appeal, further solidifying its reputation as a leader in the field.

Reflecting on the firm's achievements, Georgios Petrochilos KC, the firm's executive partner and co-founder, expressed gratitude to both clients and team members. He emphasised the firm's ongoing commitment to its founding values and its dedication to delivering exceptional results for clients in the years to come.

As Three Crowns embarks on its second decade, it does so with a firm foundation of excellence, integrity, and innovation. With a team of over 100 lawyers qualified in more than 30 jurisdictions, the firm is well-equipped to continue its legacy of success and make a lasting impact on the practice of global arbitration law.

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