LAWYER PROFILE
Hussein Haeri KC

Hussein Haeri KC

UK 2026

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Ranked in 2 practice areas

About

Provided by Withers

Practice Areas

Hussein is a King’s Counsel in England and Wales and Professor of Practice at SOAS, University of London.

Hussein has extensive experience advising States, State-owned entities and corporations as lead counsel and advocate on public international law matters. He has served as counsel before the International Court of Justice and in international fora such as the International Tribunal for the Law of the Sea (ITLOS), as well as in national courts such as in England and Wales and the British Virgin Islands (BVI) on matters relating to public international law, international arbitrations and enforcement.

Hussein's public international law practice includes advising on the law of the sea, land and maritime boundary disputes, constitutional and human rights matters, sovereign immunity, energy and natural resources, international humanitarian law, sanctions, international investment law and treaty and legislation drafting. He has served as counsel on arbitrations under various rules including ICSID, UNCITRAL, LCIA, ICC, SCC and SIAC, as well as in ad hoc arbitrations.

Hussein is a Fellow of the Lauterpacht Centre for International Law at the University of Cambridge. He is a Member of the Management Committee of the SOAS Arbitration and Dispute Resolution Centre (SADRC) and is on the Faculty at the University of Rome, Roma Tre University, Certificate Course in International Commercial and Investment Arbitration. In addition to his practice as counsel, he sits as an arbitrator.

Hussein is based in London, having previously worked in New York and Paris. He speaks French, Arabic and Italian.

Chambers Review

Provided by Chambers

Chambers Guide to the Legal Profession

Public International Law - UK-wide

Band 2
Band 2

Individual Editorial

Hussein Haeri manages an impressive caseload of PIL disputes, regularly acting for governments and companies on matters concerning human rights, boundary delimitations and WTO law. He is also well versed in handling investment treaty arbitrations, including claims brought under BITs.

International Arbitration - UK-wide

Band 3
Band 3

Individual Editorial

Co-head of the firm's international arbitration group, Hussein Haeri KC comes highly recommended for his investor-state arbitration practice. He is skilled at handling complex BIT claims and is regularly sought out by sovereign states to act in high-value ICSID arbitrations.

Strengths

Provided by Chambers

  • Hussein's sophistication and ability to deliver structured and simply put arguments are very strong.

    Public International LawChambers Guide to the Legal Profession
  • He is a smooth operator in a very measured way.

    Public International LawChambers Guide to the Legal Profession
  • Hussein is a first-class professional; he is knowledgeable, experienced and astute.

    Public International LawChambers Guide to the Legal Profession
  • His real strength is getting to grips with the detail of the case.

    Public International LawChambers Guide to the Legal Profession
  • Hussein manages to be meticulous and commercial.

    International ArbitrationChambers Guide to the Legal Profession
  • Hussein demonstrates strong legal expertise, strategic insight and a remarkable commitment to client service.

    International ArbitrationChambers Guide to the Legal Profession

Ranked Individuals at Withers (52)

London (Firms)

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