Thirteen Three Crowns LLP lawyers have been named in the 2025 Lawdragon 500 Leading Global Litigators Guide.
Partners Constantine Partasides KC, Gaetan Verhoosel KC, Reza Mohtashami KC, Manish Aggarwal, and counsel Hamid Abdulkareem in London, Georgios Petrochilos KC, Todd Wetmore, and Kathryn Khamsi in Paris, Carmen Martinez Lopez in Madrid, and Luke Sobota, Liz Snodgrass, and Scott Vesel in Washington, D.C., as well as our CEO, Hugh Carlson, were all recognised.
The fourth edition of the guide honours these individuals for their pivotal role in resolving complex multijurisdictional disputes on behalf of clients worldwide.
For more information, please click here: https://www.lawdragon.com/guides/2025-07-24-the-2025-lawdragon-500-leading-global-litigators
ABOUT CONSTANTINE PARTASIDES KC
Constantine, a founding partner of the firm, has been recognised as a key figure for International Arbitration in the UK. Constantine has appeared as lead 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.
ABOUT GAËTAN VERHOOSEL
Gaëtan, a founding partner of Three Crowns, has been recognised again as a key figure for International Arbitration in the UK. Gaëtan has over 20 years of experience serving as advocate or arbitrator in both commercial and investment treaty arbitrations. Gaëtan has been ranked as a leading international arbitration practitioner in all major publications, including Chambers, The Legal 500, The Legal 500’s Arbitration Powerlist 2019, and Who’s Who Legal (legal thought leader).
ABOUT REZA MOHTASHAMI KC
Reza, a partner in the London office, has been recognised as a key figure for International Arbitration in the UK. Reza has represented clients as counsel and advocate in more than 90 arbitrations conducted under a variety of arbitration rules in many different jurisdictions. Reza has particular expertise in disputes arising in emerging markets with a focus on the telecoms, energy, and infrastructure sectors. Reza regularly acts as arbitrator and has been appointed as party-nominated arbitrator, Chair or Sole Arbitrator in more than 20 arbitrations conducted under the ICC, LCIA, ICDR-AAA, SIAC, DIAC, DIFC-LCIA Rules.
ABOUT MANISH AGGARWAL
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 a Co-Chair of the LCIA’s Young International Arbitration Group and is consistently ranked as a leading practitioner in arbitration and public international law by major legal directories.
ABOUT HAMID ABDULKAREEM
Hamid, counsel in the London office, is an experienced arbitration practitioner and litigator, having regularly advised multinational companies on an extensive range of disputes, particularly within the energy and natural resources sector. He has played a lead role in multiple disputes arising from Nigeria’s deep offshore production sharing contracts, resulting in successful outcomes for his clients. Hamid is a current Co-Chair of the International Bar Association’s Insolvency and International Arbitration Working Group, the Young Africa Chair for the Institute for Transnational Arbitration, and a member of the Lagos Court of Arbitration’s Young Arbitrators Network’s Advisory Board. He previously served as Co-Chair of the International Bar Association’s Arb40 subcommittee.
ABOUT GEORGIOS PETROCHILOS KC
Georgios, one of the founding partners of Three Crowns, is ranked as a “Leading” Arbitrator for France, and as a key figure for International Arbitration in France and the Africa Desk for International Arbitration and Litigation. Georgios has a broad practice spanning more than two decades and covering inter-State, investment, and commercial disputes. He has represented States, international organisations, and private parties in more than 70 disputes, including several appearances in the International Court of Justice. He is recognised in Chambers and The Legal 500, and as a Thought Leader by Who’s Who Legal. Sources note that Georgios has “superb advocacy skills”, “first-rate knowledge of international law”, and that he is “one of the most impressive orators”.
ABOUT TODD WETMORE
Todd, a founding partner of Three Crowns, is recognised as an “Excellent” Arbitrator for France, and as a key figure for International Arbitration in France and the Africa Desk for International Arbitration and Litigation. has handled complex international commercial arbitration cases for over 25 years. As counsel, he represents clients in high-stakes disputes around the world in diverse sectors including high-tech manufacturing, automobile distribution, aviation, oil and gas, electricity, and mining. He has deep experience with disputes presenting challenging financial and technical issues, such as those arising from banking operations, teaming arrangements, supply and M&A deals, and gas pricing, under both common law and civil law systems. Todd is ranked in Chambers and The Legal 500, and is recognised as a “Thought Leader” by Who’s Who Legal.
ABOUT KATHRYN KHAMSI
Kathryn, a partner in the Paris office of Three Crowns, has been recognised again as a key figure for International Arbitration in France, and on the Africa Desk. Kathryn acts for States and corporate clients in all types of disputes, including investment treaty and commercial. She is also on the ICSID Panel of Arbitrators, and publishes and speaks regularly on arbitration and international law – including, most recently, on emissions trading schemes and deep seabed mining. Clients have commended her “grasp of the technical detail, and her ability to identify and articulate game-changing arguments”, and she is recommended by Chambers, Who’s Who Legal and The Legal 500.
ABOUT CARMEN MARTINEZ LOPEZ
Carmen, a partner in the Madrid office, has appeared as advocate in numerous investment treaty and commercial arbitrations. She has handled arbitrations under the rules of the major arbitral institutions and ad hoc across a variety of jurisdictions, with a particular focus on Latin America and Spain. Carmen also sits as arbitrator. Carmen serves in a variety of leadership positions, including as the President of the British Chapter of the Spanish Arbitration Club (Club Español del Arbitraje), a Vice-President of the ICC International Court of Arbitration, a member of the Arbitrator Appointment Committee of the Madrid Arbitration Court, and a team leader for the IBA Task Force for the Revision of the 2010 IBA Rules on the Taking of Evidence. Carmen writes and speaks regularly on arbitration-related issues.
ABOUT LUKE SOBOTA
Luke, a founding partner of Three Crowns, continues to be recognised as a key figure for Investment Arbitration in the United States. Luke represents private and sovereign clients in some of their most significant commercial, investor-State, and inter-State arbitrations. His practice spans the technology, energy, and financial sectors and includes successfully prosecuting one of the largest ICC cases in history. Luke is ranked by Chambers, which describes him as an “extraordinarily intelligent” attorney. Who’s Who Legal has recognised him a “sharp intellectual” who “is praised for his fantastic analytical and writing abilities”. The Legal 500 writes that Luke “is extremely smart and a great strategic thinker” and is “an excellent draftsman”.
ABOUT LIZ SNODGRASS
Liz, a partner in the Washington, DC office, has been recognised again as a key figure for Investment Arbitration in the United States. Liz more than twenty-five years of experience as an advocate and adviser in international arbitration matters. Her practice is a mix of commercial and investment treaty arbitration, across a range of industry sectors and for clients based in the US and around the world. Liz has particular expertise handling disputes involving States and State entities, including investment treaty cases, fiscal disputes under long-term contracts, and disputes that implicate both contract and treaty protections. Liz is recognized in leading directories, including Chambers & Partners and Who’s Who Legal.
ABOUT SCOTT VESEL
Scott, a partner in the Washington, DC office, has a decade and a half of experience handling complex international investment and commercial arbitrations in the oil and gas, construction, energy, mining, gaming, defence, technology, and agribusiness sectors. In addition to his private practice in international arbitration, he has served as an attorney-advisor at the U.S. Department of State and at an international organisation. He is an adjunct professor at Georgetown University Law Center, where he teaches a course on advocacy in international arbitration.
ABOUT HUGH CARLSON
Hugh Carlson is the Chief Executive Officer of Three Crowns, in which capacity he is responsible for the firm’s global operations and helps shape its strategy. He also serves as General Counsel to the firm. A litigator by background, Hugh has represented large multinationals and sovereigns in their complex, high stakes disputes. He has been described by clients and peers in Lexology Index as “an excellent lawyer,” that he “demonstrates remarkable professionalism,” and has “an in-depth understanding of international disputes.” He has repeatedly been recognized in Lawdragon’s “Global Litigation 500” and Super Lawyers as a leading litigator. He has taught at Harvard Law School since 2019 and co-founded its international arbitration workshop.