Thomas Sebastian

Thomas acts in complex regulatory and commercial disputes.

His practice is diverse and spans public international law (in particular, WTO law and investment treaty law); international arbitration; commercial litigation and competition law.

Recent case highlights include acting for Google in its dispute with Epic Games; acting for the United Kingdom in defending a €2.7 billion infraction action brought before the CJEU and defending MUFG in collective proceedings brought in the CAT in connection with alleged manipulation in the FX markets.

Thomas has acted at all levels of the English courts.  He has also acted internationally before a wide variety of international tribunals (including the WTO’s Appellate Body, WTO panels, the CJEU and ICSID tribunals).

Thomas takes a collaborative approach to his cases and is particularly well-versed in handling disputes which involve economic or regulatory issues.

He is a member of the “A Panel” of Junior Counsel to the Crown (Attorney General’s Public International Law Panel).