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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    Matthew Croagh

    Partner, Head of Melbourne/Head of Australia

    Matt specialises in construction and engineering disputes arising out of major projects. His practice encompasses all forms of dispute resolution and he is often involved in assisting clients develop and implement commercial strategies to control time and cost during the construction phase of major projects.

    Croagh Matt
    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
    Sibylle Schumacher

    Rechtsanwältin, Partner

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

    Schumacher Sibylle
    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
    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
    Pamela McDonald


    From her base in Qatar, Pamela advises Middle Eastern clients in the infrastructure and energy sectors, and specialises in international arbitration.

    Pamela McDonald
    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
    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
    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
    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

    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 advises on L Catterton’s sale of Sweaty Betty to Wolverine World Wide Inc

    Multinational law firm Pinsent Masons has acted as legal advisor to Sweaty Betty, the founders, Tamara and Simon Hill-Norton, and the senior management team, on the $410m sale of global activewear and lifestyle brand, Sweaty Betty, to Wolverine World Wide, Inc. (WWW).

    Pinsent Masons advises Tangle Teezer on £70m investment from Mayfair Equity Partners

    Multinational law firm Pinsent Masons has advised Tangle Teezer on the £70m management buy-out from Mayfair Equity Partners (“Mayfair”), the leading tech and consumer growth investor, giving Mayfair a majority stake in the business.

    Pinsent Masons helps secure planning consent for new landmark Holocaust Memorial

    Multinational law firm Pinsent Masons has advised the Ministry of Housing, Communities and Local Government as applicant in securing planning permission for a new national Holocaust Memorial and Learning Centre to be located in central London.