David Ingle

David Ingle

Senior Counsel

David specializes in commercial and investment treaty arbitration.

David is qualified to practice in England & Wales, Washington D.C., and Texas. He has acted as counsel for a range of clients in numerous international commercial and investment treaty arbitrations and has particular expertise in disputes in the renewable energy, infrastructure, and extractive sectors. He has advised more than 30 different international investors in over 10 separate ICSID and UNCITRAL arbitration claims under the Energy Charter Treaty relating to the renewable energy sector and involving claims worth in excess of EUR3.5 billion. In addition, David has advised on multiple commercial, investment treaty, and emergency arbitrations in the oil and gas sector under the LCIA, ICC, SIAC, and UNCITRAL Rules.

In 2019, David received the awards for Best 40 under 40 by Arbitration Team and top 35 lawyers under 35 by Iberian Lawyer. Client commentary: “I would especially highlight the work of David Ingle: he is highly competent and solid from a legal point of view and has a special tact and kindness on a personal level”. “He is extraordinarily professional and calm under pressure, which is unusual for someone so young.”

David has also lectured on English law and common law at the Universidad Carlos III de Madrid and investment treaty arbitration at Harvard Law School. Before relocating to Washington, D.C., David practiced in A&O's London, Prague, and Madrid offices.


Representative matters

Two energy companies in claims against a SE Asian Government in two related ICC and UNCITRAL disputes with a combined value of USD3 billion.

More than 30 different international investors in 10 separate ICSID and UNCITRAL arbitration claims against the Kingdom of Spain under the Energy Charter Treaty relating to the regulation of the Spanish renewable energy sector and involving claims worth in excess of EUR3.5 billion.

A US corporate in two billion dollar claims against Latin American States.

A Latin American State in two ongoing investment treaty arbitrations.

Published Work

  • Co-author “Arbitration under the Energy Charter Treaty: The Relevance of EU Law” in International Arbitration and EU Law, Edward Elgar Publishing (2021)
  • Co-author: “Dispute resolution in the European energy sector” in Routledge Handbook of Energy Law, Routledge (2020)
  • Co-Author: "Spain" in The International Arbitration Review, 8th ed, 10th ed., and 11th ed. The Law Reviews (2017, 2018, 2019, 2020)
  • Co-Author: "European Law and Investment Treaties" in The Investment Treaty Arbitration Review, 2nd ed. (2017)



Admitted as a Solicitor (England and Wales), 2012

Admitted to the Texas bar, 2018


LPC, Nottingham Law School, 2009

GDL, Nottingham Law School, 2008

BA, History, University of Nottingham, 2007


English, Spanish
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A&O Shearman was formed on May 1, 2024 by the combination of Shearman & Sterling LLP and Allen & Overy LLP and their respective affiliates (the legacy firms). Any matters referred to above may include matters undertaken by one or more of the legacy firms rather than A&O Shearman.