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Matrix is home to some of the leading international lawyers of their generation who are involved in a significant proportion of the cases before international courts and tribunals. Members are frequently instructed as counsel and arbitrators in international commercial, investment treaty and inter-state arbitrations.

Matrix lawyers have acted as counsel or arbitrator in arbitrations under a diverse number of rules, including UNCITRAL, ICC, LCIA, HKIAC, SCC, Swiss rules, ICSID and its Additional Facility Rules. They also specialise in court proceedings relating to arbitration, acting in leading cases dealing with interim relief and enforcement of awards.

Our broad range of expertise across Matrix means that members are also well placed to assist with ancillary and specific issues such as privacy and confidentiality, addressing allegations of bribery and corruption and fraud, and related criminal proceedings.

For more information please contact the practice manager for this area, Paul Venables.

Inter-State arbitration

Our members regularly act on inter-state claims, such as maritime boundary disputes, international claims relating to the environment and international trade disputes. We have acted for the Australian government in Australia v Japan (“Antarctic Whaling”) ICJ Reports 2014, p. 226.

Investment treaty arbitration

Our lawyers are involved as counsel in high profile investment treaty cases acting for states and investors.

Cases include:

  • Philippines v China (South Sea China dispute).
  • Niko Resources (Bangladesh) Ltd v Bangladesh & Ors.
  • British Caribbean Bank Limited v The Government of Belize.
  • Dunkeld International Investment Limited v The Government of Belize.
  • Chevron Corporation (USA) and Texaco Petroluem Corporation (USA) v the Republic of Ecuador.
  • Compañiá de Aguas del Aconquija S.A. and Vivendi Universal S.A. v. Argentine Republic.
  • Tecnicas Medioambientales Tecmed SA v United Mexican States.
  • Salini Costruttori SpA v The Hashemite Kingdom of Jordan.
  • Saluka Investments BV v Czech Republic.

Members also advise on the structuring of investments to secure investment treaty protection.

Commercial arbitration

We have experts who advise on, and act as counsel in, commercial arbitrations across a range of sectors (energy, construction, financial and telecommunications) and jurisdictions across the world. We have acted on arbitrations under all the major institutional rules, including ICC, LCIA, HKIAC as well as ad hoc arbitrations under the UNCITRAL Rules.


We have members on designated arbitrator panel and lists, including on the ICSID Member of the Panel of Arbitrators, the PCA list of arbitrators in the field of natural resources and the environment maintained by the Secretary General to the Permanent Court of Arbitration, the HKIAC list of arbitrators and the FA Premier League Panel. Our members have also sat as arbitrators in cases under the ICSID, LCIA, ICC, UNCITRAL and Swiss Rules.

Court applications in support of arbitration

Members have expertise in court applications arising from arbitration, including:

  • Anti-suit injunctions,
  • Freezing orders and orders for disclosure,
  • Injunctions in support of arbitration proceedings,
  • Challenges to arbitrators and to arbitral awards,
  • Enforcement of arbitral awards.

Members of chambers have particular expertise in issues relating to sovereign immunity arising in proceedings brought against a state.

Sports arbitration

Members at Matrix appear as counsel in sports arbitration, including representation before the Court of Arbitration for Sports in Lausanne, acting for West Ham United in the FA/FAPL arbitration brought by Fulham FC, and the players of Sheffield United arising out of the Carlos Tevez affair. Some of our members act as ad hoc clerks for the Court of Arbitration, including in Dutee Chand v International Associations of Athletics Federations CAS 2014/A/3759, the well-reported case of a female athlete with hyper-androgenism who was prevented from competing in international competitions.

Class actions claims in arbitration

Our human rights team have experience in using arbitration in large group claims against corporations for breach of their business and human rights obligations. For more information see our Corporate Social Responsibility, Investigations and Audits practice area.


Our members speak fluent Russian, French and Spanish, as well as advanced knowledge of Arabic.


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Lord (Daniel) Brennan QC
Called: 1967 Silk: 1985
Joanna Buckley
Called: 2011
Michelle Butler
Called: 2007 Solicitor: 2002
Prof. Christine Chinkin
Called: 2003
Kate Cook
Called: 1990
Edward Craven
Called: 2007
Claire Darwin
Called: 2005 Called: 2018 (Ireland)
Prof. Zachary Douglas QC
Called: 2006 Silk: 2015
Nicholas Gibson
Called: 2009, Called: 2020 (Ireland) Solicitor: 2004
Richard Hermer QC
Called: 1993 Silk 2009
Sir Anthony Hooper
Called: 1965 Silk: 1987
Raza Husain QC
Called: 1993 Silk: 2010
Janet Kentridge
Called: 1999
Samantha Knights QC
Called: 1996 Silk: 2018
James Laddie QC
Called: 1995 Silk: 2012
Rachel Logan
Called: 2008
Lord Ken Macdonald QC
Called: 1978 Silk: 1997
Prof. Jonathan H. Marks
Called: 1992
Clare Montgomery QC
Called: 1980 Silk: 1996 Called: 2001 (Northern Ireland)
Prof. Gillian Morris
Called: 1997
Helen Mountfield QC
Called: 1991 Silk: 2010
Blinne Ní Ghrálaigh
Called: 2005 (England and Wales); 2013 (Northern Ireland); 2017 (Ireland)
Nicholas Randall QC
Called: 1990 Silk: 2013
Prof. Philippe Sands QC
Called: 1985 Silk: 2003
Jessica Simor QC
Called: 1992 Silk: 2013
Paul Skinner
Called: 2010
Andrew Smith
Called: 2008
Rhodri Thompson QC
Called: 1989 Silk: 2002
Hugh Tomlinson QC
Called: 1983 Silk: 2002
Prof. Takis Tridimas
Called: 2000
Guy Vassall-Adams QC
Called: 2000 Silk: 2016
Antony White QC
Called: 1983 (England & Wales) Silk: 2001 Called: 2016 (Northern Ireland)