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Public international law in London

Allen & Overy LLP

Allen & Overy LLP's public international law (PIL) practice 'has incredible breadth and expertise'. It is highly sought after by states and international organisations, including international financial institutions, for the full range of PIL matters. Its scope of work covers disputes arising out of bilateral and multilateral investment treaties, human rights law, WTO issues, international treaties and conventions, international sanctions regimes, and sovereign immunity. Other notable areas of strength are boundary disputes, space law, international anti-terrorism conventions, trade issues, and trafficking and modern slavery matters. Mark Levy QC heads up the PIL practice in London, which also showcases Suzanne Spears, whose contentious practice encompasses investment treaty arbitration and state-to-state disputes. Also key to the group are investment treaty specialists Kate Davies and James Freeman, human rights working group chair Andrew Denny, and Matthew Townsend, who co-heads the global sanctions practice. Sarah Garvey is a highly regarded counsel, and strong support at the senior associate level is provided by Naomi Briercliffe, Guled Yusuf and Katrina Limond. 

Responsables de la pratique:

Mark Levy QC

Les références

‘Kate Davies is first rate. Really thoughtful, incredibly hard-working and willing to engage in alternative fee arrangements. I have used her for several cases and she has never put a foot wrong.’

‘Allen & Overy are excellent in terms of their strength and depth in this area, and their willingness to assist junior lawyers to expand their knowledge to assist clients better. They are completely reliable, have a great depth of knowledge and are able to see alternative arguments in a dispute.’

‘The two leading partners are Suzanne Spears and Andrew Denny. Their breadth of knowledge, intelligence and care for their clients is impressive. They are also both very approachable..

‘The team has incredible breadth and expertise in public international law. I have always been impressed by the quality of their work and their excellent reputation is well deserved.’

‘We have been advised by Guled Yusuf for a number of years. He is a first class lawyer: technically brilliant, charming and a delight to work with. He has a very calm and reassuring demeanour.’

‘Allen & Overy has a very strong standing and credibility in international arbitration, their lawyers have developed a highly sophisticated technical understanding on the energy sector from renewables (Naomi Briercliffe) to oil & gas (James Freeman). Few firms can take pride on knowing so well the energy and natural resources sector and international disputes, A&O is a place to go.’

‘Naomi Briercliffe is a one of a kind arbitration counsel, she combines her technical expertise on the energy sector with her agile procedural knowledge, she is leading the new generation of arbitration practitioners in the UK and internationally.’

Principaux clients

The European Union and the European Investment Bank

Federal Republic of Somalia

United Arab Emirates

Government of Dubai

Kingdom of Morocco

Islamic Republic of Pakistan




Genossenschaft Elektra Baselland

RWE Innogy

Principaux dossiers

  • Representing major European bank UniCredit in an investment treaty claim against Croatia, which relates to legislation passed by Croatia that allows borrowers to convert Swiss Franc-denominated loans into Euro loans at historic exchange rates.
  • Representing the European Union and the European Investment Bank in major multi-jurisdictional litigation against the Syrian Arab Republic, including obtaining six judgments in the Court of Justice of the European Union.
  • Representing the United Arab Emirates in separate claims, which were brought at ICSID in relation to alleged investments in real estate projects.

Debevoise & Plimpton LLP

Highly sought out for complex and politically sensitive matters, Debevoise & Plimpton LLP fields 'a highly dedicated team of very bright lawyers' that acts on cutting-edge PIL matters. Representative work includes cases that challenge states on human rights issues of international importance; acting for states in key diplomatic issues; and assisting with the protection of large international investments. Former Attorney General Lord Peter Goldsmith QC leads the group; other respected practitioners include experienced partner Patrick Taylor, who focuses on high-value, complex and multijurisdictional investment treaty and commercial arbitration proceedings, and Samantha Rowe, who is a PIL and international arbitration expert. The senior associates to note are Merryl Lawry-White and Conway Blake. Wendy Miles QC left for a move to the Bar.

Responsables de la pratique:

Lord Peter Goldsmith QC

Les références

‘The team is exceptional in its ability to grasp and analyse complex public international law issues.’

‘The individuals I work with are dedicated, committed, perseverent and able and willing to think outside the box.’

‘Due to the US ethos and the leadership of Lord Goldsmith this firm offers a very high quality one stop shop, very strong commercial work and also a very strong commitment to pro bono work.’

‘Lord Goldsmith. There are few advocates around who have had to grapple with such complex and significant issues as Lord Goldsmith and his calm authority and intellectual brilliance shines through.’

‘Conway Blake has actively sought out responsibility and leadership roles and this comes through clearly in his outstanding judgement and extraordinary dedication whether on high profile commercial work or on pro bono human rights work.’

‘This is a high level dedicated team of very bright lawyers. Led by Lord Goldsmith there is an associated standard and reputation that is kept intact commensurate with his practice.’

‘Lord Goldsmith QC – always timely and accurate advice with the highest level of experience brought to bear.’

Principaux clients

Royal Dutch Shell

The Shell Petroleum Development Company of Nigeria Ltd

Center for Reproductive Rights

State of Qatar

Principaux dossiers

  • Acting for Royal Dutch Shell and The Shell Petroleum Development Company of Nigeria in a claim for damages, which concerns widespread oil-spill damage, sabotage to oil pipelines, illegal theft of oil and illegal refining.
  • Acted for the Center for Reproductive Rights in relation to interventions on international human rights law and jurisprudence and comparative law, which concerned access to abortion.
  • Engaged as lead counsel by the State of Qatar in a series of high-profile public international law disputes, including a case under the Convention on the Elimination of All Forms of Racial Discrimination.

Fietta LLP

Boutique law firm Fietta LLP is dedicated to PIL matters and investor-state arbitration, and 'the speed, service and quality of its legal advice are to be praised, especially when you consider the competitive pricing'. Its substantial experience includes advising states, international organisations, multinational corporations and private clients on a range of international law matters. The practice is particularly well known for its expertise in investment treaty proceedings and maritime boundary disputes, and it has a particular niche in landmark cases that break new legal ground. Practicing at the forefront of PIL matters for approximately 20 years, Stephen Fietta QC is regularly instructed by sovereign states to assist with highly sensitive PIL issues; and Jiries Saadeh's extensive contentious work includes representing state and investor clients in international investment treaty cases. Other strong practitioners include counsel Ashique Rahman, and senior associates Laura Rees-Evans and Oonagh Sands.

Responsables de la pratique:

Stephen Fietta QC; Jiries Saadeh

Les références

‘What makes this practice unique is its vast experience and knowledge in public international law and various investment disputes.’

‘Stephen Fietta can determine strategic approach in complex cases and has team leadership skills and deep expertise, excellent analytical skills in public international law.’

‘Jiries Saadeh is highly professional in fact-finding processes whether by analysing facts or determining the key elements of the dispute. He has vast experience in public international law and investment disputes.’

‘The speed service and quality of their legal advice is to be praised, especially when you consider their competitive pricing.’

‘Stephen Fietta is an articulate professional, offering succinct and invaluable contributions. From his unerring professionalism to his endearing phone manner I would highly recommend him.’

‘This is pretty much a unique practice as it is a dedicated public international law practice. Stephen F has attracted high quality people to work with him, and this is a practice that I think will do very well in the market.’

‘Stephen Fietta is an excellent lawyer and advocate. I have also worked with and been very impressed by Laura Rees-Evans, Oonagh Sands and Fanny Sarnel.’

‘Unparalleled expertise and in-depth knowledge of the area of public international law, as well as very substantial experience with different matters and a wide range of issues.’

‘Stephen Fietta has a calm, highly analytic and effective approach. Great strategic and tactical insight.’

‘Stephen Fietta is a master of his field and translates the complexity of issues in a simple and direct manner.’

Principaux clients

PL Holdings S.à r.l.

Theodoros Adamakopoulos and others

Big Sky Energy Corporation

Arab Telemedia and others

Schooner Capital LLC

Principaux dossiers

  • Acting for Malaysia in various public international law questions relating to maritime delimitation, navigation and international environmental law.
  • Representing PL Holdings in various matters, including an arbitration pursuant to the Belgium-Luxembourg Economic Union – Poland BIT against the Republic of Poland, which resulted in a large award in PL Holdings’ favour.
  • Representing Croatia in an UNCITRAL arbitration, which was brought under the Canada-Croatia BIT and related to claims arising out of former-Yugoslavia’s state succession.

Volterra Fietta

Volterra Fietta is 'a boutique firm that is very capable in complex cross-border disputes and investment issues'. Exclusively dedicated to PIL matters, the practice advises private entities, states and international organisations on a wide range of PIL issues, including acting before the International Court of Justice (ICJ), as well as PIL courts and tribunals, including tribunals constituted under the aegis of the Permanent Court of Arbitration and the United Nations Convention for the Law of the Sea. The practice also acts for states in state-to-state proceedings before other international courts and tribunals; has a large investment treaty arbitration practice; and assists with the application of PIL matters by domestic courts, including the enforcement of arbitral awards, sovereign immunities, sanctions and human rights. The key practitioners are founding partner Robert Volterra, Graham Coop and international counsel Álvaro Nistal, with notable support provided by senior associate Gunjan Sharma.

Responsables de la pratique:

Robert Volterra

Autres avocats clés:

Graham Coop; Álvaro Nistal; Gunjan Sharma

Les références

‘Boutique firm that is very capable in complex cross border dispute and investment issues.’

‘Robert Volterra is very good.’

Principaux clients

The United Arab Emirates

The Democratic Republic of the Congo

The United States of America

The Arab Republic of Egypt

The Republic of Croatia

The Federal Republic of Nigeria

The Republic of Lithuania

Owens-Illinois, Inc.

Koch Industries, Inc.

Principaux dossiers

  • Representing the United Arab Emirates in three ongoing proceedings before the ICJ.
  • Representing the Democratic Republic of the Congo before the ICJ in the reparations phase of the landmark Armed Activities case.
  • Successfully represented the United States of America in judicial proceedings concerning state immunity matters.

Arnold & Porter

Regularly acting in cases which make the headlines and are politically charged, Arnold & Porter 'has an outstanding team for PIL work'. It is particularly noted for its strong investment treaty track record acting for sovereign states throughout Latin America, Central and Eastern Europe, Central Asia and the Asia Pacific region. The team also acts on the investor side. Other PIL areas of note are state responsibility, treaty law, international humanitarian law, jurisdictional immunity and diplomatic protection issues, and trade disputes. The key figures are Patricio Grané LabatDmitri EvseevDavid Reed and newly promoted partner Monty Taylor. Strong associate-level support is provided by Tim Smyth, Bart Wasiak, Alice Osman and Alexander Witt.

Les références

‘Arnold Porter lawyers are true international lawyers who have significant experience with public international law cases, in particular investment arbitration, which is proven by their track record.’

‘Dmitri Evseev is a sharp minded lawyer who dedicates his attention fully to the case he is representing his client, he knows all details of the case and can effectively defend the client before the arbitration tribunal.’

‘A&P has an outstanding team for Public International Law. The teams is composed by lawyers with knowledge and expertise in this field.’

‘The team of Arnold & Porter is excellent. It comprises of knowledgeable, hard-working, well-organised and efficient lawyers.’

‘I would recommend David Reed. He is a lawyer that everyone would like to have as a lead counsel because of his solid case strategy and legal argumentation.’

‘Monty Taylor is experienced and diligent.’

Principaux clients

Republic of Bulgaria

Kingdom of Thailand

Czech Republic

Republic of Peru

Republic of Costa Rica


Republic of Chile

Republic of Philippines

Republic of Korea

The Dominican Republic

Republic of Panama

EU Commission

Karkey Karadeniz Elektrik Uretim A.S.

Principaux dossiers

  • Acting for the Kingdom of Thailand in an UNCITRAL Rules investment treaty arbitration, which was initiated by Australian claimants under the Australia-Thailand Free Trade Agreement and concerns the gold mining sector.
  • Acting for Peru in six different investment treaty cases.
  • Acted for Costa Rica, as respondent, in a claim by a Canadian mining company seeking damages in connection with its rights under exploration permits.

Clifford Chance LLP

Clifford Chance LLP has a longstanding reputation for international investment arbitration proceedings, as well as matters involving politically sensitive PIL issues. The principal advisers are Audley Sheppard QC, who was elected to the Governing Board of the International Council for Commercial Arbitration in 2020; and Rae Lindsay, who is an international law, economic sanctions, and business and human rights specialist. Jessica Gladstone is also highly regarded.

Cooley (UK) LLP

Cooley (UK) LLP's 'highly experienced team deals with some of the largest multinationals in the context of international treaties, regulatory law and EU law. ' The group works across a broad spectrum of PIL matters, including investment treaty and international trade disputes and advisory work; Law of the Sea mandates on behalf of multiple states; issues of state responsibility in areas of high regional contention; and international asset recoveries. The experience of London litigation and PIL head James Maton includes advising governments on a range of PIL issues, and acting in proceedings seeking to trace, freeze and recover corruptly acquired assets. Also key to the group are vice-chair of the litigation department Laurence Harris; independent consultant Tim Daniel, who represents states before the ICJ in the Hague in boundary disputes and international arbitration proceedings; and consultant John Brown, who was previously the head of the law of the sea group at the UK Hydrographic Office.

Responsables de la pratique:

James Maton

Autres avocats clés:

Laurence Harris; Tim Daniel; John Brown

Les références

‘John Brown stands out at the core of the public international law team. With his prior background working in the government and military, he brings very important understanding of the clients.’

‘Highly commercially experienced team, dealing with some of the largest multinationals in the context of international treaties, regulatory law and EU law.’

‘The team at Cooley (UK)LLP has been fantastic in their work with us. Throughout our continued engagement with them, it has become clear to us that Cooley LLP stands out among the rest in their absolute commitment to the tasks that we engage them with and their determination to provide us with a result that is always constructive and useful. In this sense, their resourcefulness in Public International Law matters is incomparable to other firms. Furthermore, their accuracy and practicable skills in lawyering and matter’ management remains to be a standard above the rest and a threshold for others to meet.’

‘Throughout our engagement with Cooley LLP, we have worked with John Brown and James Maton hand-in-hand on Public International Law matters. In detail, John Brown’s expertise has shown through his constant engagement with our matters even after office hours and across time-zones. More importantly, John’s continued offering of clearly structured advice has been essential to our work and tantamount to our successes. James’ qualities stand out in his analytical prowess in being able to peer into our matters and offer advice that is considerate of the multi-faceted nature of our work, with careful consideration for both the practical and purely legal elements of said work. Together, they are an invaluable team that offer legal advice that can be relied on as the backbone of an organisation’s agendas and plans.’

Principaux clients

Maritime Heritage Foundation

Odyssey Marine Exploration Ltd

West African Aquaculture Ltd.

Government of the Republic of Liberia

Government of the Republic of Maldives

Asset Management Corporation of Nigeria

Government of the Cook Islands

Government of Turks & Caicos Islands

Government of Qatar

Principaux dossiers

  • Acting for Odyssey Marine Exploration Ltd in a claim against Mexico, which concerns the refusal by the Government of Mexico to provide environmental approval for the development of a major submarine phosphate development on the Mexican coast.
  • Acted for the Maritime Heritage Foundation in judicial review proceedings against the United Kingdom Ministry of Defence, which concerned the management of the 1744 wreck of the First-Rate Warship Victory.
  • Acting for the Turks and Caicos Islands Government in over 70 different civil claims to recover land and money from parties involved in corrupt practices and fraud.

Herbert Smith Freehills LLP

Herbert Smith Freehills LLP's team is 'highly skilled in law and advocacy, dedicated and hardworking, and excellent at handling clients'. The practice acts across the full spectrum of pure PIL matters, including boundary disputes, the Law of the Sea issues, treaty negotiations and interpretations, sovereign and international organisation immunity matters, and state recognition and human rights work. Other key features include international trade law, WTO law, climate change and international energy law, sanctions and export control matters. In addition, the firm has a robust business and human rights practice, while its substantial investment treaty arbitration work includes representing governments and investors in ICSID and other investor-state arbitral forums. Global PIL co-head Andrew Cannon has over 20 years' post-qualification experience in PIL work. Other key team members are Adam Johnson QC and Nick Peacock, along with of counsel Iain Maxwell, and senior associates Hannah AmbroseAaron McDonald and Louise Barber.

Responsables de la pratique:

Andrew Cannon

Les références

‘Have a strong reputation for PIL, with real expertise in proper PIL (that goes beyond ISDS).’

‘Andrew Cannon is the real deal

‘I find HSF everything one would expect of a top-tier international arbitration practice – highly skilled in law and advocacy, dedicated and hard working, excellent at handling clients, always on the key issue. What sets them apart from me is the culture – despite all the drive that makes them what they are, they are always calm, friendly, and fun to work with.’

‘Andrew Cannon – London disputes partner – very strong on public international law, excellent to work with on complex cases.’

Principaux clients

Standard Chartered Bank

United Utilities

Kingdom of Spain

ACP Axos Capital GMBH


Nord Stream 2 AG

Principaux dossiers

  • Representing Nord Stream 2 in arbitration proceedings against the European Union under the Energy Charter Treaty.
  • Acting for United Utilities (Tallinn) and AS Tallinna Vesi in a high-value investment treaty claim against Estonia, which was brought under the Netherlands/Estonia BIT.
  • Represented Standard Chartered Bank (and its Hong Kong subsidiary) in a string of investment arbitrations, which concerned its investment in a power station in Tanzania and resulted in a $148m award plus interest.

Latham & Watkins

Latham & Watkins' PIL practice is 'extremely well organised and professional, with the highest level of knowledge and expertise in public international law'. It advises on a broad range of specialist PIL issues, including international boundary law and Law of the Sea disputes, investment treaty law, international trade law, including WTO matters; and international trade sanctions, including acting as counsel in challenge proceedings before the European courts. The practice also fields experts in state and sovereign immunity law, international humanitarian law and human rights law, and has a substantial investment treaty arbitration practice. Sanctions practice head Charles Claypoole has a broad PIL practice; and Sophie Lamb QC  and Sebastian Seelmann-Eggebert, who divides his time between London and Hamburg, are highly rated for international arbitration work. Samuel Pape and Robert Price provide notable associate-level support.

Responsables de la pratique:

Charles Claypoole; Sebastian Seelmann-Eggebert

Les références

‘As a major international firm LW have the ability to offer very high class teams to offer the fullest service and the highest quality work for their clients.’

‘Charles Claypoole and Sebastian Seelman-Eggebert are the lead partners with whom I have worked most closely. They have encyclopaedic knowledge of investment treaty law and exceptionally sound judgement.’

‘Tom Lane is simply the best associate I have worked with in almost three decades. He has a unique ability to master the facts and the law and to exercise the soundest of judgement in the most complex of cases even where the materials run to 100s of files. He is also extremely down to earth and never lets ego get in the way. He just delivers a first class job for his clients.’

‘Sophie Lamb is a top-notch legal expert in international arbitration. Her knowledge, range of skills, and ability to “think out of the box” and to provide creative solutions all make her stand out among experts of the same experience and rank. Sophie is a wonderful person to work with and is an excellent team player, highly recommended.’

‘Extremely well-organised and professional. Highest level of knowledge and expertise in public international law.’

‘Sebastian Seelman-Eggebert and Charles Claypoole are excellent team leaders – very well-organised and focused. They have a first-rate associate in Tom Lane. Charles is one of the most knowledgeable law firm partners in the field of public international law.’

Principaux clients

Government of Ukraine

Ipek Investment Limited

Strabag SE

Republic of Croatia

VTB Bank

Mauritian Property Partnerships

Kingdom of Saudi Arabia

Mason Capital

Principaux dossiers

  • Defended Ukraine in the country’s biggest ever investor-state arbitration, which was brought by three Cypriot companies under the Energy Charter Treaty.
  • Acting for Strabag SE, a major Austrian construction company, in the first ICSID arbitration ever brought against Libya.
  • Acting for Hamdi Akin Ipek’s UK-based company, Ipek Investment, in an ICSID arbitration under the UK-Turkey BIT, which concerns the seizure of 18 Koza Group companies by the Turkish State.

Quinn Emanuel Urquhart & Sullivan, LLP

Quinn Emanuel Urquhart & Sullivan, LLP is widely respected for its expertise in investment treaty arbitration proceedings, particularly high-value matters involving the oil and gas, mining, energy, telecoms, construction and infrastructure sectors. Global chair of the firm's international arbitration practice Stephen Jagusch QC is a go-to advocate for investment treaty arbitration proceedings in London and worldwide; and Anthony Sinclair is an investment treaty arbitration and Energy Charter Treaty arbitration specialist. The practice also fields investment treaty arbitration expert Epaminontas Triantafilou, who has been involved as counsel in dozens of arbitration proceedings (under all major arbitral rules); and Alex Gerbi, who has particular expertise in disputes involving Russia, Ukraine and other CIS territories. Additional support is provided by consultant Peter Hood, along with associates David PusztaiOdysseas Repousis and Laila HamziJulianne Hughes-Jennett was recruited from Hogan Lovells International LLP, where she was business and human rights group head.

Les références

‘Dominic Roughton is a leading light, with a serious PIL practice in London.’

‘Dominic Roughton is an excellent tactician and is an outstanding lawyer.’

Principaux clients

AS PNB Banka (formerly AS Norvik Banka)

Ukraine (represented by the Ministry of Justice)

PJSC Oschadbank

Republic of Azerbaijan

Samax Resources Ltd

Geita Gold Mine Ltd

JSC CB PrivatBank

Schindler Holding AG

Alverley Investments Limited (Cypriot)

Germen Properties Ltd (Cypriot)

Rasia FZE

Principaux dossiers

  • Acted for PJSC Oschadbank in Paris-seated UNCITRAL arbitration proceedings, which were brought against the Russian Federation for expropriating Oschadbank’s business in the Crimean peninsula.
  • Represented Ukraine in an UNCITRAL arbitration, which was initiated by a Russian investor in relation to Ukraine’s alleged unlawful takeover of an investment in a confectionery business.
  • Acted for AS PNB Banka (formerly AS Norvik Banka), Grigory Guselnikov and others in a high-profile dispute under the UK-Latvia BIT, which concerned allegations of bribery and corruption by state organs.

Skadden, Arps, Slate, Meagher & Flom (UK) LLP

Skadden, Arps, Slate, Meagher & Flom (UK) LLP's London-based PIL practice sits as part of the firm's highly regarded European international disputes practice. 'Working tirelessly to produce results', its expertise covers investment treaty arbitration proceedings for both investors and states; and international law advisory work, including advice on international human rights law for international organisations including the UN. The group also advises on sanctions. The PIL team is led by global international litigation and arbitration group co-heads Karyl Nairn QC and David Kavanagh QC, and includes experienced partners David Herlihy, Bruce Macaulay, Daniel Gal, David Edwards, and international sanctions specialist Ryan Junck.

Responsables de la pratique:

Karyl Nairn QC; David Kavanagh QC

Les références

‘They have one of the most experienced teams around in PIL matters. They have and are representing parties in some of the biggest most complex cases.’

‘The star individual in my view is David Herlihy. He is a stellar advocate (both in writing and orally), knows how to lead a big team and is pleasant to deal with – has the self confidence and track record not to feel the need to take bad points of be unduly adversarial.’

‘Strong multidisciplinary approach, integrated strategic vision, optimal use of resources.’

‘Daniel Gal is amazing as a team leader, understanding the needs of his clients and the specific legal problems they are confronted with. I’m impressed.’

Principaux clients

NextEra Energy Spain Holdings BV

Vodafone International Holding BV

Vodafone Group plc

DP World

Republic of Cyprus

NextEra Energy Spain Holdings BV

CC/Devas (Mauritius) Ltd

Dutch investment company

NextEra Energy Spain Holdings BV

Women @ the Table

Principaux dossiers

  • Successfully represented two Dutch subsidiaries of NextEra in large investment treaty claims against Spain.
  • Representing Vodafone in one of the largest BIT disputes in the world, namely its $5.6bn dispute with India.
  • Representing DP World in only the second-ever BIT claim against the Kingdom of Belgium.

Three Crowns LLP

Three Crowns LLP is regularly sought out to act for clients in the largest and most complex and sensitive disputes across the globe. The practice has a diverse and growing client base in investor-state arbitrations, including acting for energy and governmental clients; other sector experience includes the utilities, financial services, mining and telecoms industries. Constantine Partasides QC regularly acts as lead counsel in high-profile disputes; and, alongside his longstanding prominence in Latin American disputes, Gaëtan  Verhoosel's current workload is heavily weighted towards matters in Asia, Africa, and Europe. The practice also showcases Reza Mohtashami QC, who is a Middle Eastern investor-state arbitration expert; Spain and Latin America-related disputes specialist Carmen Martinez Lopez, and recently promoted partner Manish Aggarwal. Leilah Bruton (who was recruited from Freshfields Bruckhaus Deringer LLP in 2019) and Penny Martin provide counsel-level support.

Responsables de la pratique:

Constantine Partasides QC; Gaëtan Verhoosel

Principaux clients



Elliot Associates

Sultanate of Oman




Kingdom of Bahrain


HG Capital

Principaux dossiers

  • Acting for Exxonmobil in its re-submitted arbitration against Venezuela, which is likely to become one of the most high-profile investment-treaty arbitration proceedings of recent years.
  • Acting for the Sultanate of Oman in a high-value arbitration brought by a former contractor.
  • Representing Naturgy in a claim against the Republic of Colombia that involves Naturgy’s subsidiary Electricaribe, which provides electricity to approximately 2.5m people in the north of the country.

Baker Botts (UK) LLP

Baker Botts (UK) LLP's UK team is 'extremely efficient, organised and well prepared'. It serves as the centre of the firm’s PIL practice, which fields specialists with expertise in the Americas, the Middle-East, and Russia and CIS. The practice is particularly experienced in PIL matters that involve projects, and energy and natural resources elements; it also has significant sanctions capabilities. London and Washington DC-based Jay Alexander leads the international arbitration and dispute resolution practice, which includes PIL and arbitration experts Alejandro EscobarJohannes Koepp and Chris Caulfield, who is also well known for his sanctions work. Dorine Farah was made partner in 2019.

Responsables de la pratique:

Jay Alexander; Alejandro Escobar

Les références

‘The team led by partner Alejandro Escobar is extremely organised and efficient. Each lawyer has specific tasks and the work between them does not overlap. All team members dominate the case and are always very responsive to client.’

‘Partner Alejandro Escobar’s work is unbeatable, simply perfect in every aspect. His knowledge and experience, legal and factual argumentation skills (oral and written), his ease of understanding and attending to the needs of his clients, his ultra-personalised and immediate service and the depth with which he manages every aspect of the cases in his charge, demonstrate the highest level of professionalism he has as well as his commitment to their clients.’

‘Alejandro Escobar’s team is extremely efficient, organised and well prepared. Their professionalism, personalised attention and commitment to the cases and its clients are unmatched.’

‘I have been working with partner Alejandro Escobar, who in my opinion is the best lawyer in the area of international arbitration. He is simply a brilliant counsel due to his keenness of mind and extremely high legal knowledge, in addition to other characteristics such as his efficiency and high level of responsibility with the cases entrusted to him. As a client, you know that with Alejandro Escobar you will receive the highest quality work with the highest possible ethics and commitment.’

Principaux clients

Mobile Telesystems

The Republic of Ecuador

Samsung Engineering Company Limited

Boies Schiller Flexner (UK) LLP

Boies Schiller Flexner (UK) LLP's London-based team plays a central role in complex PIL matters globally. Its breadth of PIL expertise includes investor-state arbitration proceedings, sovereignty issues, boundary work and Law of the Sea matters, state and diplomatic immunity mandates, sanctions and human rights issues. London managing partner Natasha Harrison's international litigation and arbitration practice covers a range of international public law matters.

Autres avocats clés:

Natasha Harrison


Carter-Ruck advises on specialist PIL issues, including human rights work including the application of the Organisation for Economic Co-operation and Development guidelines for multinational enterprises; targeted sanctions imposed by the UK, EU, UN and the US; extraditions, INTERPOL notices, statehood recognition and independence bids, and diplomatic protection. The international law practice is spearheaded by Guy Martin, and also includes Alasdair Pepper, whose global client base includes multinational and national companies, heads of state, political figures, managing directors and ultra-high-net-worth individuals.

Responsables de la pratique:

Guy Martin

Principaux dossiers

  • Acted for the Qatari Embassy in PIL and sovereign immunity matters.
  • Represented Al Jazeera Media Network in its ICSID arbitration against Egypt (pursuant to a BIT between Qatar and Egypt), which related to the loss of AJMN’s substantial investment in Egypt.
  • Advised several high-profile individuals on EU restrictive measures that were imposed upon them in the wake of the Arab Spring.

Clyde & Co LLP

Clyde & Co LLP's team acts in cross-border disputes for and against governments globally, in relation to Russia and CIS, Central and Eastern Europe, Latin America and Asia. Representative claims involve expropriations, fair and equitable treatment standards, discrimination and denials of justice. The firm also has a robust sanctions practice, in addition to substantial shipping, insurance, energy, trade and commodities, and transportation sector expertise. John Whittaker has over 20 years' experience in investment disputes, sovereign immunity and sanctions issues; and Ben Knowles co-chairs the global arbitration group. Other experienced practitioners are Maurice Kenton and Alejandro Garcia, along with legal director Milena Szuniewicz-Wenzel, and consultants Clare Hatchera and Simon Schooling.

Responsables de la pratique:

John Whittaker

Principaux clients

Shanara Maritime International, S.A.

Marfield Ltd. Inc

DLA Piper

DLA Piper's broad practice regularly advises states and international organisations on significant PIL matters. Notable areas of expertise include maritime boundary disputes; function protection and immunity issues; treaty drafting and negotiations; and investment treaty disputes. Philip Chong heads up the Europe international arbitration practice in London, Kate Cervantes-Knox has significant investment treaty experience, and John Forrest is London international trade head. Other key figures include senior consultant Scott Horton, who has decades of experience in advising governments; and of counsel Ben Sanderson, who is the international arbitration global practice manager. Elinor Thomas is an experienced legal director.

Responsables de la pratique:

Philip Chong; Scott Horton

Les références

‘Ben Sanderson is professional and sensible.’

Principaux clients

Republic of Kenya

Republic of Guinea

Democratic Republic of Timor-Leste


Government of Ghana

Kyrgyz Republic





Principaux dossiers

  • Successfully defended the Republic of Kenya in ICSID proceedings.
  • Acted in a high-profile public international law case for INTERPOL.
  • Advising the government of Afghanistan on complex governmental negotiations.

Eversheds Sutherland (International) LLP

Eversheds Sutherland (International) LLP 'has a rich tradition in carrying out PIL work for various states'. The firm has a substantial investor-state arbitration practice, while clients also benefit from the UK team's access to local expertise from its network of offices across a range of global jurisdictions. Acting in both investor-state arbitration proceedings and PIL matters, Jonathan Leach leads the UK international arbitration group and Greg Falkof focuses on disputes in the oil and gas, construction and infrastructure sectors, primarily in Africa and the Middle East. Further support is provided by principal associate Cameron Forsaith and senior associate Ahmed Abdel-Hakam. Barrister Claire Stockford joined as a partner from Shepherd and Wedderburn.

Responsables de la pratique:

Jonathan Leach

Les références

‘Eversheds has a rich tradition in carrying out public international law work for various States. The fact that their State clients continue to reappoint them is a testament to their expertise in the area.’

‘Jon Leach is very experienced in acting for States. He has excellent attention to detail and is very much a partner who will go that extra mile. He thinks through things carefully. He is also a pleasure to deal with.’

‘Cameron Forsaith has an impressive practice. In addition to his investment treaty work, he has been involved in very significant matters before the Iran-US Claims Tribunal.’

‘Jonathan Leach is an outstanding advocate.’

Principaux clients

The State of Libya

Islamic Republic of Iran

Government of Malaysia

Principaux dossiers

  • Acted for the State of Libya in a construction sector-related claim, which was brought against it by a UAE company and was pursuant to a multilateral treaty.
  • Acted for Minister of Malaysia (Incorporated) and 1Malaysia Development Berhad in claims against International Petroleum Investment Company and Aabar Investments PJS, which concerned the misappropriation of billions of dollars from the Malaysian people.
  • Represented the State of Libya in a claim brought against it by South Korea’s Shinhan Engineering & Construction Company, which was pursuant to a BIT between Libya and South Korea.

Gibson, Dunn & Crutcher

Gibson, Dunn & Crutcher's London office is acting in a notable volume of high-profile investment treaty arbitration proceedings. Jeffrey Sullivan QC’s practice has a particular focus on disputes involving the energy, TMT and infrastructure sectors, as well as the extractive industries. Sullivan recently led the team which represented 14 investors, including AES Corp, Impax Asset Management, Riverstone and HgCapital, in an Energy Charter Treaty claim against the Kingdom of Spain, which was reportedly the first-ever ECT claim against Spain. Cyrus Benson and Penny Madden QC both have wide-ranging experience in investment treaty arbitration proceedings. Sullivan QC was appointed as a silk in the 2021 competition.

Responsables de la pratique:

Penny Madden QC; Cyrus Benson

Autres avocats clés:

Jeffrey Sullivan QC

Principaux clients

Yukos Capital

Global Telecom Holding

Corral Morocco Holdings

Bechtel Corporation


Agility Public Warehousing

VEON Limited



Luxtona Limited

AES Corporation

Centerbridge Partners Europe LLP



Antin Infrastructure Services Luxembourg S.à.r.l.

Antin Energia Termosolar B.V.

Eiser Infrastructure Limited

Energía Solar Luxembourg S.à r.l.

WalAm Energy


RREEF Infrastructure

Principaux dossiers

  • Acted for Egypt-based Global Telecom Holding in two investment treaty arbitrations, including a BIT claim against Canada, which concerned the unfair treatment of its Canadian telecoms investment, Wind Canada.
  • Won a jurisdictional challenge for Yukos Capital in the high-value Yukos Oil-related investment treaty case against the Russia Federation.
  • Represented 14 investors, including AES Corp, Impax Asset Management, Riverstone and HgCapital, in an Energy Charter Treaty Claim against the Kingdom of Spain.

Hogan Lovells International LLP

Hogan Lovells International LLP's scope of experience covers investment treaty arbitration proceedings, the interaction between international public law, EU law and international organisations; and human rights matters. Markus Burgstaller acts in international disputes, and Charles Brasted is the public law and policy practice head. Former business and human rights group head Julianne Hughes-Jennett joined Quinn Emanuel Urquhart & Sullivan, LLP.

Autres avocats clés:

Markus Burgstaller; Charles Brasted

Linklaters LLP

Linklaters LLP is particularly well known for international trade law, international human rights law and business and human rights advice, state immunity issues and the immunities of intergovernmental organisations, and investor-state disputes. The practice also assists with sanctions and their impact on clients’ operations across the globe. Investment arbitration specialist Matthew Weiniger QC is co-head of the firm's global international arbitration practice, Charlotte Morgan co-heads the trade law department, and Vanessa Havard-Williams co-leads the business and human rights group. External senior counsel Lorand Bartels has extensive  experience in trade law, particularly free trade agreements. Adrien Canivet and Rebecca James are experienced managing associates.

Responsables de la pratique:

Matthew Weiniger QC

Principaux clients

Bank of New York Mellon

United Nations Global Compact

PL Holdings S.à r.l.

Abris Capital Partners


Standard Chartered Bank (Hong Kong)


Principaux dossiers

  • Acting for BNYM in the framework of UK, Dutch and Belgian enforcement proceedings, which were launched by Moldavian investors against the Republic of Kazakhstan and the National Bank of Kazakhstan, following a large award.
  • Acting for PL Holdings, a subsidiary of Abris Capital Partners, in investment arbitration proceedings initiated against the Republic of Poland at the Arbitration Institute of the Stockholm Chamber of Commerce.

Simmons & Simmons

With specialist arbitration partners across its commercial litigation, insurance and construction practices, Simmons & Simmons 'has an extremely strong PIL practice', which is singled out for its investment dispute expertise. Recent work also includes enforcement proceedings, which raised novel sovereign immunity points. Stuart Dutson heads up the international arbitration group, and has conducted arbitration proceedings under all major institution rules in London, Europe, the Middle East and Africa. Also key to the team is Jayne Bentham, who acts in large and complex, multijurisdictional arbitration proceedings (particularly in the telecoms and energy sectors), along with managing associate Basil Woodd-Walker and supervising associate Eleanore Di Claudio.

Responsables de la pratique:

Stuart Dutson

Les références

‘Simmons & Simmons has an extremely strong practice in this area, under the fantastic leadership of Stuart Dutson. They offer an exceptionally skilled team of individuals who provide advice which is always considered and on-point. They have developed a very strong following in the market. I am always happy to recommend them to clients for work in the area.’

‘Stuart Dutson is superb and was a key hire for Simmons & Simmons. He has professorial specialist knowledge of public international law and is definitely a star in the field (including treaty arbitration). His capacity for work is phenomenal and he has an unbeatable intellect.’

Principaux clients

Government of the Republic of Indonesia

Botas Petroleum Pipeline Corporation

Sodexo Pass International SAS

Principaux dossiers

  • Acted for the Indonesian Government in a victory in a BIT arbitration, which was brought by Indian Metals & Ferro Alloys Limited under the India-Indonesia BIT.
  • Defended Botas Petroleum Pipeline Corporation in relation to attempts to enforce six ICC arbitrations against assets it holds in Jersey.
  • Acted for French investor Sodexo Pass International (globally known for Quality of Life services) in its ICSID claim against the Hungarian State.

Steptoe and Johnson UK LLP

Steptoe and Johnson UK LLP's London PIL team is 'always very well prepared and makes reliable and realistic arguments on the basis of the evidence available'. It fields specialists in investment treaty arbitrations, state-state disputes, sovereign immunity work and enforcement issues. Other areas of particular strength include anti-corruption laws and economic sanctions; representing agricultural sector businesses in investor-state arbitrations; and advising energy and mining companies on their rights under international law. Investment treaty arbitration chair Matthew Coleman is a go-to counsel for claims against African states, and Thomas Innes is an experienced associate. Investment treaty arbitration expert Christophe Bondy joined as partner in 2020 from Cooley (UK) LLP.

Responsables de la pratique:

Matthew Coleman

Autres avocats clés:

Thomas Innes; Christophe Bondy

Les références

‘They are always very well prepared, and have done their homework. They make a reliable and realistic argument on the basis of the evidence available.’

Principaux clients

European Commission Legal Services on behalf of the European Union

Sunlodges Ltd


Border Timbers

The Republic of Armenia

Usha Industries, Inc.

Saint Patrick Properties Corporation

Medusa (Montenegro) Limited

The UK Government

Mission of Korea to the EU

Koch Supply and Trading, LP

Koch Industries

Principaux dossiers

  • Represented European investors in an investment treaty arbitration against an African state, which was in relation to an expropriation and resulted in a large award.
  • Acting as external counsel to the European Union in its defence of an investment claim under the Energy Charter Treaty, which was brought against it by Nord Stream 2.
  • Represented the von Pezold family and Border Timbers in parallel cases against Zimbabwe, which arose from a large expropriation programme and resulted in high-value awards (plus interest and costs).

Wilmer Cutler Pickering Hale and Dorr LLP

Wilmer Cutler Pickering Hale and Dorr LLP fields 'a leading practice in international commercial arbitration, but is also well-known for PIL cases'. It is consistently involved in significant state-to-state disputes; groundbreaking intra-state arbitrations; high-stakes international human rights proceedings; disputes involving PIL issues; and investment arbitrations. Gary Born chairs the firm's international arbitration practice group, and has many decades of experience as lead counsel in PIL matters; he recently led advice to the Government of Fiji on the drafting of the Fiji International Arbitration Act and subsidiary legislation for arbitration-related court proceedings. Also highly rated is Steven Finizio, who assists with international law and treaty issues.

Responsables de la pratique:

Gary Born

Autres avocats clés:

Steven Finizio; Jonathan Lim

Les références

‘Wilmer Hale is a leading practice in international commercial arbitration, and well-known for public international law cases.’

‘The firm’s lawyers we have been fortunate to work with understand the broader significance of our work and go above-and-beyond to provide the best expertise and timely advice, no matter the size of the clients or remuneration.’

‘Gary Born and Jonathan Lim have contributed significantly to our development work despite their incredibly busy schedules. Their expertise in dispute resolution and public international law are well-known but what sets them apart is their dedication to development and rule of law work.’

Principaux dossiers

  • Advised the Asian Development Bank, a number of Pacific Island states and other states in Asia (including Uzbekistan) on accession to the New York Convention and reform of international arbitration legislation and investment legislation.
  • Assisted the Federal Government of Somalia with the drafting of its fisheries legislation, the drafting of its international arbitration bill, and the drafting of preparatory documents for Somalia’s accession to the WTO.

Withers LLP

Withers LLP's 'team is responsive, expert and willing to go the extra mile for its clients'. The broad PIL practice advises governments and multinational companies on international human rights litigation, international investment law, WTO issues, state immunities, the Law of the Sea, international environmental law, and sanctions. Hussein Haeri heads up the PIL practice, and consultant Aniruddha Rajput is a member of the UN International Law Commission. At senior associate level, Robert Kovacs specialises in PIL issues, international arbitration proceedings, and business and human rights; and Camilla Gambarini is an international arbitration and PIL expert.

Responsables de la pratique:

Hussein Haeri

Les références

‘Hussein Haeri is the key advantage possessed by Withers in the PIL/Investment arbitration market.’

‘Hussein Haeri demonstrates outstanding legal and client skills.’

‘Withers LLP has a team which is responsive, expert and willing to go the extra mile for their clients. My experience of their dedication and skill has been in the field of dispute resolution and public international law practice. Their services were tailored and outstanding. I was impressed particularly by the wealth of experience on offer.’

‘Hussein Haeri was the partner with whom I was in contact most. Hussein combines being incredibly bright and able with an engaging and positive personality. I was constantly impressed by his enthusiasm and ability to advise on and draft technical and highly complex documents with dedication, speed, accuracy and flair.’

‘Hussein Haeri is an exceptional arbitration lawyer. He inspires confidence in his clients, is very responsive to their needs, and never drops a ball. He is particularly well versed in Africa related disputes having lived and worked their for several years. He understands the commercial and even political aspects of a dispute as well as possessing a deep (encyclopaedic) knowledge of public international law. Also he is strong on enforcement and sovereign immunity issues.’

‘The team has a deep bench with experience in international human rights law. This is not typical for most global firms and is major asset in partnering with them on pro bono matters.’

‘Camilla Gambarini, an associate with in the London office, has provided outstanding pro bono assistance in multiple matters pertaining to Latin America and Africa.’

Principaux clients

Government of Ukraine

The Government of the British Virgin Islands

His Exalted Highness 8th Nizam of Hyderabad

The Center for Reproductive Rights

Government of Jersey

Scholz Holding GmbH

Principaux dossiers

  • Represented His Exalted Highness 8th Nizam of Hyderabad in proceedings that concern the sum of £1m transferred in 1948 from a bank account that was owned by His Exalted Highness 7th Nizam of Hyderabad into another bank account and in another name.
  • Defended the Government of Ukraine in an UNCITRAL arbitration initiated by Olympic Entertainment Group (Estonia), which arose out of alleged breaches of treaty provisions under the Estonia-Ukraine BIT.
  • Acted for the Government of the BVI in a legal challenge to the United Kingdom Government’s imposition of a public register of beneficial ownership through an Order in Council.


CMS 'brings various areas of expertise to bear on a case'. The practice acts for sovereign states, international organisations, and commercial and state entities in PIL-related disputes. New areas of focus for the practice include the Law of the Sea and business and human rights issues. Karen Denny and Pieter Bekker  co-head the PIL group, which also includes Christopher Gooding, Tim Hardy and Sukhi Kaler, along with senior associate Zainab Hodgson.

Responsables de la pratique:

Karen Denny; Pieter Bekker

Les références

‘The team at CMS is engaging and approachable. They have diverse interests and experiences, which they combine well on a case, as needed.’

‘Karen Denny is outstanding. She has a breadth of knowledge in this area which is impressive. She is also excellent with clients.’

‘Karen Denny is a class act. She always puts the client first, and has a deep interest in and knowledge of the public international law field.’

‘Karen Denny has excellent legal acumen and client skills.’

Principaux clients

USA Department of Justice


Erste Group Bank AG

Principaux dossiers

  • Acting for claimant investors in a case arising from Croatia’s enactment of retroactive legislation on the conversion of Swiss franc loans.
  • Acted for Fugro on the Law of the Sea aspects of its geo-data services (especially surveys) to customers worldwide.

Curtis, Mallet-Prevost, Colt & Mosle LLP

Curtis, Mallet-Prevost, Colt & Mosle LLP focuses on the representation of states in both investor-state arbitration proceedings and disputes with other states. Charles Buderi’s expertise includes international arbitration proceedings involving states, as well as acting for governments in contentious and non-contentious matters, which concern sovereignty, treaty and diplomatic issues. Luciana Ricart was made partner.

Responsables de la pratique:

Charles Buderi

Autres avocats clés:

Luciana Ricart

Principaux clients





Principaux dossiers

  • Representing the United Arab Emirates in two cases before the International Court of Justice, which concerned the appeal of two decisions of the Council of the International Civil Aviation Organization.
  • Representing the United Arab Emirates in a case (brought by Qatar) before the International Court of Justice, which concerned the International Convention on the Elimination of All Forms of Racial Discrimination.
  • Secured a victory for the State of Kuwait before an ICSID tribunal, in relation to a high-value claim brought by an Egyptian tourism investor under the Egypt-Kuwait BIT.


Dentons' practice, which is headed up by Liz Tout, advises states and private entities on investment treaty arbitration proceedings, treaty interpretations, investment structuring and protection matters, and sovereign immunity issues. Other key areas are state responsibility, state succession, sanction, export control, human rights, free trade agreement and WTO issues. Additional names to note are Roger MatthewsJames Langley and senior associate Catherine Gilfedder.

Responsables de la pratique:

Liz Tout

Principaux dossiers

  • Advised a UK exporter on whether it could qualify for preferential duty rates under certain EU free trade agreements (FTAs), the regulatory requirements under those FTAs, and the implications of Brexit on the supply of goods.
  • Acting for a South Asian state in a high-value case, which involves an application for annulment before ICSID and an enforcement action in various jurisdictions, including the US.
  • Acting for a South Asian state defending a claim under a BIT, which relates to an alumina production and bauxite refining project.

Jones Day

Jones Day fields a specialised investor-state arbitration group, which handles high-profile cases against CIS countries. Sylvia Tonova and Lee Coffey are international arbitration experts. Further support is provided by senior associate Philip Devenish and global disputes solicitor, Anatoly Matveev. Former partner Baiju Vasani joined Russian firm Ivanyan and Partners.

Principaux clients

World Wide Minerals Ltd.

Federal Elektrik Yatirim ve Ticaret A.S.

Gold Pool JV Ltd.

Omega Engineering LLC

Alhambra Resources Ltd

Windoor AS

The Government of the Kyrgyz Republic

Principaux dossiers

  • Successfully represented  uranium mining company World Wide Minerals in its treaty claims against Kazakhstan.
  • Acting for Canadian gold mining company Gold Pool JV Limited in UNCITRAL arbitration proceedings, which arise under the Canada-USSR agreement for the promotion and reciprocal protection of investment.
  • Representing Canadian gold mining company Alhambra Resources in an ICSID arbitration against Kazakhstan, which relates to the forced bankruptcy of its local project company.

King & Wood Mallesons

King & Wood Mallesons has notable Asian expertise and the practice has successfully defended states against investor claims in the banking, energy, telecoms, mining, natural resources and real estate sectors. Andrei Yakovlev splits his time between London and Dubai, and Wilson Antoon was made partner in 2020. Dorothy Murray joined Proskauer Rose LLP.

Responsables de la pratique:

Andrei Yakovlev; Wilson Antoon

Autres avocats clés:

Alexis Namdar

Les références

‘Geographic spread, especially good for China-related matters.’

‘Andrei Yakovlev is a seasoned and respected arbitration practitioner. He provides good quality and effective representation to his clients.’

Principaux clients

The Kyrgyz Republic

Principaux dossiers

  • Achieved a dismissal of 94% of the amount claimed against the Kyrgyz Republic by Stans Energy Corp in an UNCITRAL arbitration, which related to the expropriation of licences to develop rare earth element deposits.
  • Acted for the Kyrgyz Republic in settling an UNCITRAL arbitration against Toronto-listed Centerra Gold.
  • Successfully resisted attempts by four foreign investors (up to the Supreme Court of Canada) to execute awards against shares indirectly owned by the Kyrgyz Republic in Toronto-listed Centerra Gold.

Lindeborg Counsellors at Law

Acting for states, international organisations, companies and politically-exposed persons, Lindeborg Counsellors at Law is a 'small, highly focused' boutique PIL firm, which was founded by Rutsel Silvestre Martha, a former INTERPOL general counsel and legal affairs director. The practice advises on INTERPOL red notices, treaty-based arbitrations, and the law of international organisations. Stephen Bailey is an experienced counsel.

Responsables de la pratique:

Rutsel Silvestre Martha

Autres avocats clés:

Stephen Bailey

Les références

Very knowledgeable, hands-on and approachable.

We rate its knowledge and expertise in handling international law matters.

This is a unique boutique firm, specialising in public international law matters. The team is led by Rutsel Martha, a tremendous specialist in the field. The firm is small but it has all the intellectual clout one could want, and uses public international law principles in an imaginative and effective way for the benefit of clients.

The team of Lindeborg Counsellors at Law has deep knowledge of international law together with unique first-hand experience, especially with regard to international organisations. What makes them exceptional is the quality of their legal research and ability to use both legal concepts and case law to design a strong legal strategies, which proves to be effective even in highly complex and sensitive cases.

This is a small, highly focused practice. It takes on only a limited number of cases each year, so the quality of the output is of the highest quality. If you want best-in-class coupled with an ability to think out of the box, then this is the firm.

Rutsel Marhta is unique: a genuine public international law specialist, who spent a large part of his career at senior positions in international organisations, in particular at INTERPOL. He is also an active academic, which in this area of practice is of considerable practical value for clients. For individuals facing extradition or asset-seizure issues, or other forms of attack by states, I doubt there will be a better lawyer they could go to than Rutsel.

Rutsel Martha is an exceptional lawyer with a strong breadth of knowledge and an incredible ability to think out of the box. His services do not come cheap but you can be assured of access to one of the finest legal brains in this sector in the world.

Beyond legal knowledge and practice, these individuals really care. Counsel Stephen Bailey is not only an exceptional legal mind but able to create confidence and enthusiasm while keeping expectations at the right level. He is the type of attorney that any client would like to have.

Principaux dossiers

  • Acting for former INTERPOL President, Hongwei Meng (and his family), in a Permanent Court of Arbitration matter against INTERPOL, which was commenced under the Headquarters Agreement between France and INTERPOL.
  • Represented a Panamanian businessman (wanted by Panama) to obtain the deletion of two red notices on the basis that proceedings in Panama against the client were of questionable validity.
  • Acting for an individual in an arbitration commenced under the Netherlands-Panama BIT, which concerned the intervention and subsequent liquidation of the client’s brokerage firm in Panama.

Peters & Peters Solicitors LLP

Peters & Peters Solicitors LLP is 'a superb firm'. Michael O’Kane regularly advises on corrupt states' decisions, EU sanctions, and human rights violations; and Nick Vamos is experienced in prosecution-side international criminal law. Also highly regarded are human rights expert Jasvinder Nakwal; economic sanctions and export controls specialist Anna Bradshaw; and Neil Swift, who is experienced in extradition requests and INTERPOL red notices.

Responsables de la pratique:

Michael O’Kane

Les références

‘This is a superb firm and Keith Oliver is an outstanding lawyer in this field. He has vast experience in dealing with issues and clients in a number of overseas jurisdictions: the Middle East, Asia and the United States. He has a wonderful team and provides a dedicated service which is designed to produce the best possible outcome no matter what the commitment. He is also extremely sensitive to commercial matters and has a deep understanding of the practicalities of business.’

‘Jasvinder Nakhwal is an exceptional lawyer- she listens to client’s, understands their needs and is extremely responsive.’

Principaux clients

Hermitage Capital Management

MOL Hungarian Oil and Gas Company

Principaux dossiers

  • Acting for Hermitage Capital Management in one of the highest profile INTERPOL cases involving Russia.
  • Representing Hungary’s national oil and gas company (MOL) in relation to agreements entered into in 2009 with Croatia, which concerned the management of Croatian national oil and gas company, INA.
  • Acted in a leading extradition case on Russian prison conditions and the correct approach to diplomatic assurances from the Russian Federation that an extradited person will be kept in Article 3 ECHR-compliant conditions.

Reed Smith LLP

Reed Smith LLP's 'very professional team understands client issues'. It handles the pursuit and defence of investor-state claims, and also has expertise in the oil and gas, construction, mining, electricity, telecoms, banking, solar and nuclear power sectors. Belinda Paisley specialises in investment treaty international arbitration proceedings, and Chloe Carswell's practice is equally focused on investor and state PIL work.

Responsables de la pratique:

Belinda Paisley; Chloe Carswell

Autres avocats clés:

Lucy Winnington-Ingram

Les références

‘The Reed Smith London public international law / investor-state arbitration team is vastly experienced, and includes some of the most talented and promising individuals practising in this field at both partner and associate level. The practice has a long history of acting in high-profile ISDS cases, especially concerning the CIS / FSU regions, and has accumulated a vast range of experience across numerous industry sectors. Its depth of experience, strength in expertise, and commerciality and flexibility make it a key team in this field.’

‘At partner level, Belinda Paisley is a first-rate lawyer, who blends strategic instincts and big-picture thinking with an impressive grasp of forensic detail. She is extraordinarily hard-working and committed and an excellent team leader.’

‘At associate level, Lucy Winnington-Ingram is an outstanding arbitration lawyer and a real rising star. Her formidable intellect is paired with first-class drafting skills, exceptional forensic abilities, strategic instincts far beyond her years,’

‘Reed Smith’s International Trade & National Security Team provides relevant, timely and practical legal advice with particular expertise on sanctions-related issues. The dedicated team’s responsiveness and ability to keep on top of and communicate the ever-changing legal landscape in this area sets them apart from other firms.’

‘Very professional. Excellent and prompt advice. Very understanding of client issues with relaxed engagement.’

‘Chloe Carswell and Lucy Winnington-Ingram. Very knowledgeable in their field and give advice we trust in a practical and accurate manner. Both are a pleasure to deal with.’

‘Belinda Paisley – tenacious and clever practitioner – who will fight hard and achieve good results.’

Stephenson Harwood

Stephenson Harwood's group acts for governments and state-owned companies in high-stakes matters, and it is particularly experienced in financial sanctions work; it also has expanding investment treaty and investor-state disputes practices. Practice head Kamal Shah also leads the Africa and India groups. Other experienced practitioners are Sue Millar, Richard Garcia and of counsel Stephen Ashley.

Responsables de la pratique:

Kamal Shah

Autres avocats clés:

Sue Millar; Richard Garcia; Stephen Ashley

Les références

‘Kamal Shah is the lead partner in international arbitration. Excellent contacts and very good judgement in conducting matters. Always goes the extra mile.’

‘Highly experienced litigators who go the extra mile for the client and will take utmost client care.’

Principaux clients

Nigerian National Petroleum Corporation

Petroleos de Venezuela, S.A

Arab Republic of Egypt

Libyan Investment Authority

High Commissioner for Pakistan in the United Kingdom, on behalf of the Government of Pakistan

Former majority shareholders of Yukos

National Iranian Tanker Company

Iran Aluminium Company

Bank Saderat Plc

Persia International Bank Plc

Bank Sepah International Plc

Melli Bank Plc

Principaux dossiers

  • Instructed on behalf of the Government of Pakistan in connection with a dispute, which relates to the ownership of large sums deposited in a UK bank account and includes issues of state immunity, among others.
  • Acting for one of the competing chairmen of the Libyan Investment Authority in relation to its existing receivership and ongoing authority dispute against the other purported chairmen.
  • Defending Nigerian National Petroleum Corporation against the enforcement of a large Nigerian arbitral award in England.

White & Case LLP

White & Case LLP's London PIL practice is particularly focused on investor-state arbitration proceedings. David Goldberg is an investment arbitration specialist with a focus on CIS jurisdictions, who divides his time between the firm's London and Moscow offices; and Andrea Menaker's experience includes representing respondent states and claimant investors in significant investment arbitration cases. Menaker has also served as an expert witness on investor-state issues.

Autres avocats clés:

David Goldberg; Andrea Menaker