International Arbitration

Our team specialises in large, complex international arbitrations. As one of the leading law firms advising on all forms of commercial disputes, we pride ourselves on our sector knowledge as well as on our technical international arbitration expertise.

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We have a global reputation for delivering high-value and technically complex cases in the global energy and infrastructure sectors.


We maintain close links to the major arbitral institutions such as the ICC, LCIA, CIETAC, AAA, DIAC, SIAC, SCC, HKIAC and ICSID.

Global service

We have 200 dedicated arbitration practitioners based throughout Asia Pacific, Europe, the Middle East and Africa.

Pinsent Masons has one of the leading international arbitration practices in the energy and infrastructure sectors. We enjoy a world-class reputation in successfully delivering high-value and technically complex cases. 

Our team is co-led by Jason Hambury in London and Dean Lewis in Hong Kong.  We represent clients on commercial and investment treaty arbitrations all over the world, involving different procedural and substantive laws, issues of public international law, enforcement and treaty rights.  

With some 200 dedicated arbitration practitioners based in London, Paris, Singapore, Hong Kong, Dubai, Doha, Johannesburg, as well as Mainland China and Australia, our arbitration expertise has a truly global footprint.  

Typically at any one time we are instructed on over 70 international arbitrations, a significant number of which will involve sums in excess of US$100m, and some of which will be very considerably higher. 

Our current arbitration portfolio consists of cases comprising some US$10.5bn in dispute involving claims that are high profile and have legal and political significance. We have close links to the major arbitral institutions such as the ICC, LCIA, CIETAC, AAA, DIAC, SIAC, SCC, HKIAC and ICSID.  We also have significant experience in conducting UNCITRAL and ad hoc arbitrations.  

Our links with the international arbitration community are longstanding.  We were on the drafting committee for the England & Wales Arbitration Act 1996 and the DIAC and SIAC Rules.  We regularly participate in the pre-eminent research studies. In 2016 we supported the Queen Mary University of London study on dispute resolution in the technology sector. This research was subsequently nominated by Global Arbitration Review for the Best Development of 2016 Award. In 2019 we again partnered with the University on a study into Construction Arbitration

Our arbitration practitioners are truly diverse and international, many of whom are qualified in more than one legal system and multilingual.  They regularly act as advocates and some of them sit as arbitrators.  This has allowed us to forge strong relationships with the leading international arbitrators and provide informed advice to our clients on the important issue of arbitrator selection and the composition of the panel.

Our latest work

Our advisers act on domestic and international matters of all shapes and sizes, working with many of the leading names in the market. Browse our experience below, or use the filters to look-up recent work in particular geographies and industry sectors.

    Meet the team

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    Clotilde Lemarié


    Clotilde is an advocate specialised in international arbitration. She regularly represents multinational companies, states and state-owned entities in complex and high-value international arbitration proceedings, particularly in the energy, infrastructure, oil & gas and mining sectors.

    Lemarie Clotilde
    Dr. Helena Chen

    Partner, Joint Head of Office, China

    Helena has vast experience in arbitration, infrastructure projects and cross-border investments. She is very experienced in acting as counsel in international arbitrations. She has also served as sole, chair or co-arbitrator in over one hundred arbitrations and has acted as an emergency arbitrator in international arbitration proceedings.

    Image of Helena Chen
    Frédéric Gillion


    Frédéric heads the construction and arbitration team. He is qualified in English and French law and has extensive experience of the FIDIC forms of contract and their use in civil law jurisdictions.

    Portrait of Frédéric Gillion
    Jean-François Le Gal


    Jean-François specialises in international arbitration and multi-jurisdictional proceedings - frequently with a link to Africa and the Middle East.

    Le Gal Jean-Francois
    Mark Raymont


    Mark has a market leading reputation in advising on complex, large-scale technical, commercial and legal disputes for clients in the infrastructure, energy, oil & gas and process sectors.

    Raymont Mark
    Matthew Croagh

    Partner, Head of Melbourne/Head of Australia

    Matthew specialises in construction and engineering disputes arising out of major projects, with a particular focus on LNG.

    Croagh Matt
    Mohan Pillay

    Partner, Head of Office, Singapore

    Mohan is the head of Singapore joint law venture Pinsent Masons MPillay LLP, and managing partner of the Singapore constituent practice of MPillay. He is jointly qualified in Singapore, and England and Wales, with over 30 years experience in advisory, commercial litigation and regional arbitration work, particularly in construction and engineering projects.

    Pillay Mohan
    Nicholas Brown


    Nicholas is a multi jurisdictional lawyer with over twenty years of dedicated experience in advising and representing project participants in the resolution of disputes arising on infrastructure and energy projects across the Asia Pacific, the Middle East, Africa and Australia, including as counsel in international commercial arbitrations.

    Brown Nicholas
    Pamela McDonald

    Senior Associate

    Pamela specialises advising contractors on major infrastructure and energy projects across the Middle East from the outset through to completion and is experienced in arbitration, litigation and ADR.

    Pamela McDonald
    Sam Boyling

    Partner, Joint Head of Office, China

    Sam is a Partner in the Construction and Engineering team and Joint Head of our China Practice.

    Boyling Sam
    Sibylle Schumacher

    Rechtsanwältin, Partner

    Sibylle heads the German Dispute Resolution Practice and advises in complex and cross-border litigation and arbitration proceedings.

    Schumacher Sibylle
    Sofía Parra


    Sofía Parra is a Partner of the Construction Advisory & Disputes (CAD) area of Pinsent Masons, currently based in Madrid. She is specialised in Energy and Infrastructure projects, with 16 years experience advising on all phases of a project: contract drafting and negotiation, project support during the execution stage and dispute resolution.

    Parra-Martinez Sofia

    Our expertise, at your disposal

    With over 430 partners and 3000 people around the world, we are well-placed to support you across a full range of legal and advisory services.

    Latest press releases

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    Pinsent Masons named as one of Stonewall's Top Global Employers 2020

    Multinational law firm Pinsent Masons has been recognised as a leading lesbian, gay, bi and trans employer by LGBT charity Stonewall in its Top Global Employers Index 2020 for the fifth consecutive year.

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    Multinational law firm Pinsent Masons has advised Schütz Family Office on the acquisition of private bank Freie Internationale Sparkasse S.A..

    Pinsent Masons named a top ten family friendly employer for fourth year in a row

    Multinational law firm Pinsent Masons has been named as one of the top ten family friendly employers in the UK by work life balance charity, Working Families.