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Global Leader

Arbitration 2020

Professional Biography

WWL Ranking: Recommended

WWL says

Jon Tweedale is a “sharp and efficient” arbitration lawyer, complimented for his “incisive legal mind”.


Jon Tweedale is co-head of the international arbitration practice at Addleshaw Goddard LLP. As well as maintaining his practice as counsel, Jon also sits as an arbitrator.

He has over 20 years' experience advising on international commercial disputes and has acted as counsel for multinationals, banks and governments in international arbitrations under most arbitral rules, including arbitrations under the LCIA, ICC, ICSID and UNCITRAL rules seated in London, Paris and Vienna.

Jon is also a solicitor-advocate (civil proceedings) of the Supreme Court of England and Wales and has substantial experience advising on proceedings in the Commercial Court in London. These include proceedings ancillary to international arbitrations, including bringing and defending applications for anti-suit injunctive relief.

Sectors and industries in which he has knowledge and experience include energy (oil, gas and renewables), life sciences (pharma and biopharma, including gene therapy programmes), manufacturing and engineering, banking and finance, retail, hospitality and professional services.

Jon represented the oil major BP in the first case brought to trial under the Shorter Trials Scheme (a pilot scheme in the English Commercial Court), in which a US$70 million claim against BP was successfully defeated in the Court of Appeal. He is currently acting for a state in a substantial investment treaty arbitration.

Jon studied law at Downing College, Cambridge University, before training and practising as a solicitor in the international arbitration and commercial litigation practice of Allen & Overy LLP (London office) for over 10 years. He is a member of the LCIA, ICCA and the Chartered Institute of Arbitrators.

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