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International Arbitration

Allen & Overy’s International Arbitration group advises a diverse range of corporates, financial institutions and governments on complex cross-border commercial arbitrations and investment treaty arbitrations.

With arbitration experts, including leading advocates, spread across our global network of offices, we advise on the most pressing and complex disputes wherever they arise. 

A&O’s international arbitration expertise spans the full range of sectors in which arbitration is used, including: 

  • Energy and natural resources
  • Construction and infrastructure projects
  • Telecommunications
  • Life sciences
  • Banking and finance
  • Intellectual property rights
  • M&A and joint ventures

Representing clients in arbitrations under all the key rules, including the ICC, LCIA, HKIAC, SIAC and UNCITRAL Rules, our specialist practitioners around the world are qualified in many jurisdictions and fluent in numerous languages. Senior members of our team regularly sit as arbitrators and hold key positions with the leading arbitral institutions and/or legal associations. Our experience allows us to most effectively represent our clients' best commercial interests.

We typically conduct our own advocacy in clients’ arbitration cases, delivering cost savings and ensuring our advocates are involved from the very start of proceedings. Our approach to the conduct of matters is always informed by our advocacy experience.

News & insights

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Publications: 17 January 2022

Structuring investments in 2022: time to rethink

A number of factors have led to a more uncertain environment for infrastructure investment globally as we move into 2022.

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News: 22 December 2021

Allen & Overy arbitration partner Kate Davies McGill appointed QC

Allen & Overy’s Kate Davies McGill has been appointed Queen’s Counsel in the 2021 competition.

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Allen & Overy ranked third worldwide for "Global Leaders" in Who's Who Legal Arbitration 2022

News: 09 December 2021

Allen & Overy third worldwide - Who's Who Legal: Arbitration 2022

The Who’s Who Legal: Arbitration 2022 survey of the world’s leading arbitration lawyers lists 16 Allen & Overy lawyers as “Global Leaders”, placing A&O third in the global rankings in terms of…

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Publications: 02 December 2021

Effect of non-compliance with a pre-arbitral obligation to mediate: who decides?

NWA v NVF, hot on the heels of a similar decision in Sierra Leone v SL Mining Ltd [2021] EWHC 286 (Comm), confirms that, under English law, non-compliance with a pre-arbitral obligation to mediate is…

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  1. Band 1, Dispute Resolution, Global-wide, Chambers Global 2019
  2. International Arbitration Firm of the Year, Benchmark Litigation Asia-Pacific Awards 2019
  3. Best Arbitration Team of the Year in Spain and Portugal, 2019 



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