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.