Hussein Haeri

Hussein Haeri: Attorney with Withers LLP
  • Partner at Withers LLP (415 Attorneys)
  • 16 Old Bailey, London, England EC4M 7EG
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Hussein is a partner in the litigation and arbitration team, focusing on international arbitration.

He leads the firm’s global arbitration and public international law teams. He advises and represents clients on international arbitrations (commercial and investment treaty), public international law and international dispute resolution matters around the world.

Hussein is ranked in Who’s Who Legal (Arbitration: Future Leaders) which notes that he impresses market commentators with his ‘combination of strong litigation skills with expert knowledge in public international law’ . Legal 500 states that Hussein is ‘a standout operator’, ‘very strong’ and is ‘acknowledged for his leadership qualities’. Legal Business Disputes Yearbook says that Hussein is ‘a name that is destined to join the pantheon of stars in the international arbitration arena’. Global Arbitration Review quotes leading market commentators as saying that Hussein is ‘a first rate lawyer who blends strategic thinking with excellent client management skills’ and that he is ‘very knowledgeable about investor-state jurisprudence’ and ‘an exceptional lawyer’.

Hussein is a Solicitor-Advocate of the Senior Courts of England and Wales and frequently acts as counsel and lead advocate in international arbitrations. He has worked on arbitrations under the major arbitration rules, including for example ICSID, UNCITRAL, LCIA, ICC, SCC and SIAC Rules, as well as ad hoc arbitrations. His clients include governments, as well as multinational corporations and other international investors.

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. He practiced law in New York and Paris before returning to London.

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

Hussein has taught international arbitration and public international law to graduate students at Kings College London and University College London in the UK, at Sciences Po and the University of Versailles in France and at Roma Tre University in Italy. He also regularly provides advice and training on public international law and international arbitration to governments.


‘W(h)ither ICSID jurisdiction?’, Quadrant Chambers Conference, London - April 2016

‘ASEAN and Investment Treaty Arbitration’, KLRCA / RAIF Conference, Kuala Lumpur, Malaysia - May 2015

‘The BVI and Bilateral Investment Treaties’, Business BVI International Arbitration Conference, British Virgin Islands - May 2015

‘Costs in Investment Treaty Arbitration’, Investment Treaty Forum Conference of the British Institute of International and Comparative Law, London - October 2013

State-State Disputes in International Environmental Law’, New York City Bar Conference on Developments in International Environmental Compliance and Enforcement - April 2013

‘Arbitral Agreements and Awards as Investments in Investment Treaty Arbitration’, Investment Treaty Forum Seminar of the British Institute of International and Comparative Law, Paris - February 2013

‘The Future of the UN: Four Predictions’, The International Conference on Cultural Diplomacy and the UN, UN Headquarters, New York - February 2012


‘The Non-Disputing State Party in Investment Arbitration: An Interested Player on the Third Man Out’ in Practicing Virtue: Inside International Arbitration (Editors: D. Caron, S. Schill, A. Smutny and E. Triantafilou), Oxford University Press, Oxford - 2015

‘Investment Treaty Arbitration increasingly utilized’, Connecticut Law Tribune, March 2017

‘A Tale of Two Standards: Fair and Equitable Treatment and the Minimum Standard in International Law’, 27(1) Arbitration International (2011). This article was awarded the LCIA Gillis Wetter Memorial Prize for 2010-2011

‘Fairness and the Final Word’, Turkish Commercial Law Review, Volume 2(1) - Summer 2016

‘New rules in the new year: SIAC ’s Investment Arbitration Rules’, Asia Business Law Journal, January 2017

‘Asean and Investment Treaty Arbitration’, The Arbitrator & Mediator - December 2015

‘Cuba libre - but with investment protection’, Global Arbitration Review - November 2015

‘How the Pechstein case has brought CAS ’s independence into question’, Global Arbitration Review - September 2015



Track Record

A11Y LTD v Czech Republic Counsel of the Claimant in an ICSID -administered UNCITRAL arbitration related to assistive technologies.

Italian energy company ICSID arbitration.

Construction dispute and ad hoc arbitration in North Africa.

Energy company UNCITRAL arbitration against Pakistan.

Multi-billion dollar energy arbitration.

Advising a government on investment treaty drafting.

Caribbean international investment law advice.

Advising a government in the Middle East on international investment law.

Representing a German investor in an investor-State arbitration against an African State

Advising an Italian company in an investor-State arbitration against an African State

Advising an international organisation in relation to EU-Russia sanctions

Advising a State in relation to international aviation and sovereignty issues under public international law

Advising a State in relation to discrimination issues arising under a human right treaty

Advising a State in a potential State-to-State dispute in relation to international environmental law issues

Advising a State in relation to issues pertaining to freedom of navigation and the law of the sea

Areas of Practice (10)

  • Energy
  • Families and family offices
  • Government
  • South America
  • Middle East
  • Malaysia
  • Asia Pacific
  • North America
  • India
  • Private companies

Education & Credentials

Contact Information:
+44 (0)20 7597 6675  Phone
+44 (0)20 7597 6543  Fax
University Attended:
McGill University, B.A. Hons, Political Science, International Development Studies, Economics, 2002
Law School Attended:
London School of Economics, LLM, International Business Law, 2005
Year of First Admission:
2008, England and Wales


ICC Task Force on Trusts and Arbitration

London Court of International Arbitration ( LCIA )

LCIA Arab Users' Council

Arbitrator Panellist at Kuala Lumpur Regional Centre for Arbitration

Arabic and French

Peer Reviews

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*Peer Reviews provided before April 15, 2008 are not displayed.

Documents (8)

Documents by this lawyer on

London, England

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