Thomas is a commercial silk, with a wide commercial practice, and a specialism in work on private international law.
His commercial practice covers banking, financial services, shipping, aviation, commodities, property, offshore energy, insurance and reinsurance, pharmaceuticals and life sciences, and transjurisdictional disputes. Thomas also has a leading practice in cross-over cases involving intellectual property, competition law, commercial law and private international law.
Thomas has argued cases at all levels of the English courts including the Supreme Court.
He frequently appears in commercial arbitrations before the ICC, LCIA, and other trade specific arbitral forums, including the LMAA, LME, and RSA. Arbitrations have concerned subjects including mobile telephone contracts, international construction, superyachts, shipbuilding, charterparties, commodities, patent licensing and FRAND.
Thomas accepts appointments as an arbitrator in international arbitrations. He also acts as an expert witness on English law in foreign courts, including the French, Italian and Belgian courts.
He is the author of The Anti-Suit Injunction, which is the lead work on anti-suit injunctions and related issues in the conflict of laws. This has been cited with approval and adopted by the High Court and Court of Appeal on numerous occasions, and the Advocate General of the European Court of Justice.