Hussein Haeri KC

Partner | London

Client Services Contact Zoë Nunn


Hussein Haeri KC is a partner in the international arbitration and public international law teams and co-head of the Middle East group.

Hussein jointly leads the firm's international arbitration team and leads the firm's public international law team. He is a solicitor-advocate of the senior courts of England and Wales and was appointed King's Counsel in 2024. Hussein has experience of working on international legal and dispute resolution matters in London, Paris, New York and South Africa for over 15 years. He is also a Solicitor-Advocate of the Eastern Caribbean Supreme Court (BVI).

Hussein co-heads the firm's Middle East group and leads many cases involving the Middle East and North Africa region.

Hussein is recognised as a 'leading individual' by Legal 500 for both International Arbitration and Public International Law, which states that ‘the practical and solutions driven Haeri is outstanding' and that ‘he combines huge intellectual powers with great client handling and gives straight-to-the-point advice'. He is also recognised in the Legal 500's Arbitration Powerlist, by Who's Who Legal and by Chambers and Partners, which refers to him as  ‘an outstanding lawyer, combining a great attention to detail with a view of the big picture' with ‘excellent case management and strategic skills'. Chambers and Partners notes that 'Hussein has an outstanding analytical ability and he's a dream to work with'.

He has worked as counsel and advocate on arbitrations under all the major rules, including ICSID, UNCITRAL, LCIA, ICC, SCC and SIAC Rules, as well as in ad hoc arbitrations. His clients include governments, multinational corporations and international organisations.

He has served as counsel in state-state proceedings before the International Court of Justice and in national courts, including the courts of England and Wales, on public international law issues.

Hussein's public international law practice includes advising governments and international organisations on international investment law, constitutional and human rights matters, sovereign immunity, energy and natural resources, international humanitarian law, sanctions, the law of the sea and treaty and legislation drafting.

Hussein is a Senior Fellow on International Investment Law at SOAS, University of London. He is a Member of the Faculty at the University of Rome, Roma Tre University, Certificate Course in International Commercial and Investment Arbitration. He has also taught international arbitration and public international law to graduate students at the London School of Economics, Kings College London and University College London in the UK and at Sciences Po and the University of Versailles in France. He has published extensively in the fields of international law and international arbitration.

In addition to his work as counsel, he sits as an arbitrator.