Thomas acts in complex regulatory and commercial disputes. His practice is diverse and spans public international law; commercial dispute resolution; and Chambers’ core practice areas of competition law and EU relations law.
Recent case highlights include acting for the European Commission in the Interchange appeals in the UK Supreme Court; acting for Gazprom in multi-billion dollar arbitrations relating to transit of gas through Ukraine; and acting for Bahrain in an inter-state WTO dispute concerning economic sanctions imposed on Qatar.
Since the 2016 referendum Thomas is frequently consulted by UK government departments on Brexit and trade issues. His combined understanding of trade law, trade diplomacy and EU law allows him to provide sophisticated advice in this rapidly evolving area of law and policy.
Public international law, WTO & investment treaties
Thomas has acted in over 20 treaty cases and has an in-depth understanding of the commercial, regulatory and political factors that give rise to international trade and investment disputes. He has appeared before a wide range of international tribunals including arbitral tribunals established under bilateral investment treaties, WTO panels and the WTO’s Appellate Body. He also has experience of acting in inter-state mediation proceedings.
Thomas is on the UK Attorney General’s Public International Law Panel and is ranked in Chambers and Partners and the Legal 500.
Major investment treaty arbitrations
- French investor v European State, UNCITRAL arbitration, The Hague. Acted for a European State in a dispute arising from the revocation of marketing authorisations for pharmaceutical products.
- US investor and Dutch investor v Central Asian State, ICSID arbitration, London. Acted for two energy companies in a dispute relating to the imposition of price controls in the electricity sector on competition law grounds.
- Millicom v Senegal, ICSID Case No. ARB/08/20, Paris. Acted for a telecom operator in a dispute relating to the revocation of a telecom license.
Major WTO cases
- Bahrain — Measures Relating to Trade in Goods and Services, and Trade-Related Aspects of Intellectual Property Rights, DS 527. Acted for Bahrain in its dispute with Qatar regarding sanctions imposed on national security grounds.
- Australia – Certain Measures Concerning Trademarks, Geographical Indications and Other Plain Packaging Requirements, DS 458. Acted for Cuba in its dispute with Australia regarding plain packaging requirements imposed on tobacco products.
- South Africa – Anti-Dumping Duties on Frozen Meat of Fowls from Brazil, DS 439. Acted for South Africa in its dispute with Brazil regarding anti-dumping measures imposed on imports of poultry.
- Thailand – Customs and Fiscal Measures on Cigarettes from the Philippines, DS 371. Acted for Thailand in its defence of fiscal and regulatory measures applied to imported cigarettes.
- European Communities – Regime for the Importation of Bananas, DS 361. Acted for Colombia in multi-state mediation proceedings regarding the European Union’s import regime for bananas conducted by WTO Director-General Pascal Lamy.
- United States – Measures Relating to Shrimp from Thailand, DS 343. Acted for Thailand in its challenge to enhanced bonding requirements imposed by the United States on importers of shrimp.
- Korea – Anti-Dumping Duties on Imports for Certain Paper from Indonesia, DS 312. Acted for Indonesia in its challenge to anti-dumping duties imposed by South Korea on imports of paper.
- European Communities – The ACP-EC Partnership Agreement, WT/L/ 616, WT/L/625, First and Second Recourse to ad-hoc arbitration pursuant to the Doha Ministerial Decision of 14 November 2001. Acted for Colombia, Costa Rica, Ecuador and Guatemala in their challenges to proposed European Union import tariffs on bananas.
- European Communities – Export Subsidies on Sugar, DS 283. Acted for Thailand in its challenge to the European Union’s subsidy regime in respect of sugar.
- European Communities – Conditions for the Granting of Tariff Preferences to Developing Countries, DS 246. Acted for India in its challenge to tariff preferences granted by the European Union to textile products from twelve developing countries.
Thomas has broad experience across competition and regulatory litigation. He was part of the team defending various airlines in the long-running Air Cargo cartel damages case (work which was recognised with an award for Cartel Defence Litigation of the Year at the Global Competition Review Awards 2018) and is a contributor to the current edition of Competition Litigation: UK Practice and Procedure (2nd Edn, 2019)
He has a particular interest in conflicts of laws issues as they arise in competition damages claims.
- Sportradar v Football Data Co and another (CAT). Acting for the defendant in a claim about sports data.
- Allianz v Barclays and others (Comm). Acting for a defendant bank in the Foreign Exchange competition damages litigation.
- Trucks competition damages litigation (CAT). Acting for DAF Trucks.
- Interchange competition damages litigation (SC). Acted for the European Commission as intervener in the Supreme Court.
- Case C-591/16 Lundbeck v Commission (CJEU). Acted for the United Kingdom as intervener in a case concerning “pay for delay” patent settlements.
- Arcelik v LG and others (Ch. D) Acted for the claimants in follow-on proceedings concerning the cathode ray tube cartel.
- National Grid Electricity Transmission v ABB and others (Ch D). Acted for the claimants in follow-on proceedings in the Chancery Division concerning the power cables cartel.
- GSK and ors v CMA (CAT). Acted for the CMA in various challenges to a decision regarding “pay for delay” settlements of patent litigation.
- Emerald Supplies Ltd & Ors v British Airways (Ch. D). Acted for Singapore Airlines and various other Part 20 Defendants in the air cargo cartel damages cases.
- Groupe Eurotunnel SA v Competition Commission and SCOP v Competition Commission (CAT). Acted for the Competition Commission in two judicial reviews of a merger control decision.
International arbitration and commercial litigation
Thomas has acted in arbitrations conducted under ICC, ICSID, LICA, SCC and UNCITRAL rules. His dual-qualification in England and Wales and India makes him particularly effective in arbitrations that involve both of those legal systems. Thomas also has experience of acting in arbitration-related applications and commercial disputes in the Commercial Court.
- Naftogaz v Gazprom (SCC Arbitrations). Acted for Gazprom in several complex arbitrations regarding the transit and supply of gas to and through Ukraine. The sums in dispute exceeded USD 100 billion.
- ICC Arbitration, Singapore. Acted for the Indian party in a private equity dispute regarding exit from an Indian real estate investment.The sums in dispute exceeded USD 100 million.
- Set aside proceedings (Comm). Acted for a French investor in a s.67 challenge to an award rendered in a London-seated bilateral investment treaty dispute.
- LA Micro v LA Inc and others  EWHC 1405 (Ch D). Acted for a US defendant in a dispute involving the beneficial ownership of shares in a UK computer business.
- Royal Petrol Trading v Total EWHC 1272 (Comm). Acted for UAE party in a dispute with Total.
- LCIA Arbitration, London. Acted for a Mauritius company is a dispute arising out of a renewable energy asset acquisition in India.
- LCIA Arbitration, London. Acted for a Canadian oil and gas company in a dispute concerning the development of an Indian gas field.
- ICC Arbitration, London. Acted for a UAE party in a dispute arising out of a cement supply contract.
- LCIA arbitration, London. Acted for a bank in a dispute regarding investments in a hedge fund.
- UNCITRAL arbitration, London. Acted for an oil and gas consortium in a dispute with an Asian state under a production sharing contract.
EU relations law, trade and customs
Thomas is well-placed to advise on the full-spectrum of regulatory, trade and customs-related matters arising from Brexit. He draws on his knowledge of EU law, WTO law, and UK and EU policy processes to design solutions for his clients. He has a particular interest in services market access.
Thomas also has considerable experience of assisting private respondents in the course of trade remedies and customs investigations and is used to working closely with economic and accounting experts in that context.
Thomas has advised numerous UK Government departments on trade law issues.
- Case C-213/19 Commission v United Kingdom (CJEU) Acting for HMRC in a significant case regarding UK contributions to the EU budget.
- Advised a Japanese multinational on rules of origin under the EU-Japan Economic Partnership Agreement.
- Advised a UK law firm on post-Brexit market access to the EU.
- Advised a stock exchange on GATS and FTA-compatibility of certain policies implemented by a regulator.
- Advised a UK importer on anti-circumvention rules in connection with an EU anti-dumping measure.
- Advised a German importer on customs classification issues.
- Advised a Taiwanese corporation on an Indian anti-dumping investigation.
- Advised a US corporation on a Chinese anti-dumping investigation.
- Advised a state-owned corporation on the countervailing duty risks associated with a tax exemption.
- Advised an investor on the interaction between EU state aid rules and bilateral investment treaty obligations.
- 17 Jun 2020Monckton success in Supreme Court on interchange fees
- 06 Dec 2017Air Cargo Claimants can appeal
What the directories say
Competition: “Definitely a future star.” – Chambers UK, 2021
Public International Law: “Very clever, thorough and a go-to for WTO matters.” – Chambers UK, 2021
Public International Law: ‘‘One of the most experienced, if not the most experienced, counsel on trade law issues in the UK, he is also excellent on investment treaty issues.’’ – Legal 500, 2021
International Arbitration: Counsel: ‘‘Very responsive and always make himself available to discuss matters and turns work around promptly – his advice is comprehensive and accounts not only for the strict legal merits of the position, but also considers the broader strategic perspective of the case.’’ – Legal 500, 2021
Competition: ‘‘Significant expertise in competition disputes and gives high quality advice which is measured and considered; calm and composed and easy to deal with.’’ – Legal 500, 2021
“Highlighted by peers as “a leading practitioner in public international law and WTO law”. – Arbitration, Who’s Who Legal UK Bar 2020
Commercial: “An approachable and hardworking junior of note.” – Legal 500 Asia Pacific – the English Bar
Public International Law: “Very well respected in international trade.” – Chambers Global, 2020 – The English Bar – Global-wide
Competition: “Thoughtful and hard-working,” he’s “a calming influence, who works to build a consensus among parties.” “He’s extremely good value for someone of his level of call.” – Chambers UK and Chambers Global, 2020
Public International Law: “Very well respected in international trade.” – Chambers UK, 2020
Public International Law: ‘‘Highly rated for state v state disputes.’’ – Legal 500, 2020
“Receives much applause for his “excellent drafting and industry knowledge” with respondents describing him as “a leading practitioner in public international law and WTO matters” – Arbitration, Who’s Who Legal UK Bar 2019
Competition: “He is a good team player who is very pleasant to work with.” – Chambers UK, 2019
Public International Law: “Outstanding advocate and WTO expert, renowned for his trade law knowledge.” – Chambers UK, 2019
Public International Law: ‘‘An approachable and hardworking junior.’’ – Legal 500, 2018
Public International Law: ‘‘Good at getting to the nub of the situation, and his drafting is concise and elegant.’’ – Legal 500, 2017
Public International Law: “He combines astute and sound advice with an invaluable “bigger-picture” strategy.’’ – Legal 500, 2016
”One of the few juniors with a proper understanding of public international law matters.” Leading Junior in Public international Law. Legal 500, 2015
“A measured and convincing advocate with well-tuned analytical skills.’’ Thomas is ranked as a leading Junior in Public International Law – Legal 500, 2014
Thomas was a Rhodes Scholar and studied law at Oxford University as well as the National Law School of India University.
Prior to transferring to the Bar in 2012, Thomas practiced at the Advisory Centre on WTO Law (an international organisation which represents States in WTO disputes) in Geneva and within the international arbitration group of a magic circle law firm in London.
He has strong academic interests and was appointed as a Visiting Professor at the London School of Economics in 2017.
Thomas’ publications include:
- Arbitration and the Act of State doctrine  Lloyd’s Maritime and Commercial Law Quarterly 359.
- Competition Litigation: UK Practice and Procedure, Mark Brealey QC and Kyla George (eds) (Oxford University Press, 2nd Edn, 2019) (contributor).
- Moral Damages in Investment Arbitration: Punitive Damages in Compensatory Clothing? 29 Arbitration International 45 (2013) (with Stephen Jagusch).
- The law of permissible WTO retaliation in Bown and Pauwelyn (eds), The Law, Economics and Politics of Trade Retaliation in WTO Dispute Settlement (Cambridge University Press, 2010).
- World Trade and International Law in Cali (ed), International Law for International Relations (Oxford University Press, 2009).
- World Trade Organization Remedies and the Assessment of Proportionality: Equivalence and Appropriateness, 48 Harvard International Law Journal 337 (2007).
- Giving Legal Effect to the Results of WTO Trade Negotiations: An Analysis of the Methods of Changing WTO Law, 9 Journal of International Economic Law 989 (2006) (with Hunter Nottage).
Shorter pieces can be found at the following links:
- “The WTO Option“, prepared for UK Legal Future Event titled “Brexit: The Future of International Trade” at the House of Commons, 8 February 2017.
- After Brexit: State Aid under WTO disciplines” prepared for the Monckton Brexit Blog, 15 September 2016 (with David Unterhalter SC).
- “White Industries: The appropriate remedy for delay” prepared for the Tread the Middle Path Blog, 28 June 2014.