Lucas Bastin > Essex Court Chambers > London, England > Lawyer Profile

Essex Court Chambers
Essex Court Chambers


Lucas has a versatile practice across an array of practices areas, albeit with most of his work relating to his expertise in public international law, international arbitration and commercial litigation relating thereto.  As part of that versatility, Lucas has:

◾Acted and/or advised in matters before all levels of English courts, typically with a focus on questions of sovereign immunity arising in the context of enforcement of arbitration awards against foreign sovereigns, but also in proceedings enforcing awards not involving sovereigns (see ss. 67-69 of the Arbitration Act) and/or seeking orders in aid of or related to ongoing or soon-to-be-commenced arbitrations (e.g., anti-suit injunctions, disclosure of documents or other information, and declaratory relief).

◾Acted and/or advised in more than 60 investment treaty arbitrations, brought across many sectors and pursuant to a wide array of bilateral and multilateral investment treaties, with experience of all the major arbitration rules (including ICSID, SCC, SIAC, LCIA, ICC, UNCITRAL and ad hoc rules).

◾Acted and/or advised in more than 20 commercial arbitrations, across a wide array of sectors, mostly applying English law, but covering a variety of foreign laws as the applicable law.

◾Advised States, non-governmental organisations, private commercial entities and private individuals on a diversity of public international law issues, including State responsibility, State and head of State immunity, treaty interpretation, extradition, WTO law (including live and high profile disputes before the Dispute Settlement Body), ECHR law, EU and UN sanctions, and Interpol Red Notices.


Call: 2007 (Australia)
Call: 2013 (England)


English (native)
French (working knowledge)


Lincoln’s Inn


University of Sydney (BA, LLB), University of Oxford (BCL, DPhil)

Lawyer Rankings

London Bar > Public international law

(Leading Juniors) Ranked: Tier 1

Lucas BastinEssex Court ChambersAn excellent asset to any legal team, his organised work is easy to follow up with regardless of how complex a case is, and he has excellent analytical capabilities and can segregate irrelevant or minor matters from crucial and more important matters.

London Bar > Energy

(Leading Juniors) Ranked: Tier 4

Lucas BastinEssex Court ChambersHe is simply outstanding – intelligent, pragmatic and responsive.

London Bar > International arbitration: counsel

(Leading Juniors) Ranked: Tier 1

Lucas Bastin – Essex Court Chambers ‘He is the best junior barrister out there – extremely smart, commercially-minded and very good at explaining complex situations in a simple way.