Chambers Review
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Chambers Global Guide
Public International Law: The English Bar - Global Market Leaders
Individual Editorial
Thomas Sebastian is highly regarded for his investment treaty and WTO work. He has acted in treaty disputes involving Cuba, Colombia, Thailand, India and South Africa, and has also advised the UK government on Brexit-related international law issues.
Strengths
He is a straight shooter. He is very direct, honest and thorough.
Competition Law - UK
Individual Editorial
Thomas Sebastian is well known for his handling of major competition cases for clients from the technology sector. He defends clients in investigations into possible abuse of dominance and cartels, and also has experience acting for claimants in collective proceedings.
Strengths
He's extremely intelligent and unfailingly calm under pressure. He's a real diplomat, excellent at liaising with clients and adept at plotting a path through difficult legal challenges.
Thomas is very, very good on the detail. For complex matters he's really excellent - he doesn't fluff over any details and gets right down to the nitty gritty.