Anne-Mette Heemsoth is an English-qualified international counsel in the firm’s London office whose practice focuses on EU and UK competition law and regulation, as well as foreign direct investment regimes.

Ms. Heemsoth has extensive experience with complex merger investigations before the European Commission and national competition authorities on a global level, as well as with contentious legislative, behavioural, and EU state aid matters. She also regularly advises on foreign investment risk and controls and manages foreign investment reviews, often as part of a strategic, cross-border approach to obtain regulatory approvals in a large number of jurisdictions worldwide. Ms. Heemsoth represents clients across various industries and has particular expertise in financial services, including insurance and private equity, chemicals, communication, aviation, media, and technology.

Ms. Heemsoth is recommended by The Legal 500 UK (2024) in the area of EU and competition law. According to clients, she is “extremely competent, smart and commercially focused” and “she is great at communicating and has an approach to problem-solving which is creative, sustainable and economical at the same time.”

Ms. Heemsoth frequently writes on competition law and compliance topics and is the co-author of the UK competition law chapter of the PLC Global Guide series. Further recent publications include “New European Union Foreign Subsidies Regulation Targets Inbound M&A Activity” The M&A Lawyer Vol 27, Issue 3 (March, 2023); “Regulatory scrutiny of secondaries investments on the rise” Secondaries Investor (March, 2023); “UK Government Prohibits Third Deal Under Its New National Security and Investment Act” (November, 2022); “Illumina / GRAIL: EU General Court Upholds Commission’s New Referral Policy” (August, 2022); “The Digital Markets Act—A New Era for “Big Tech”? ” (July, 2022); “Private Equity Report Fall 2021, Vol 21, No 3 - Getting Private Equity Deals Done in the Current Antitrust Environment” (November, 2021); “Recent ESG Antitrust Developments Ahead of the 26th UN Climate Change Conference of the Parties” (COP26) (October, 2021); “Highest EU Court Expands Presumption of Financial Investor Liability for EU Antitrust Infringements” (February, 2021); “Debevoise & Plimpton Discusses Whether EU Antitrust and Data Privacy Rules Are Converging” The Columbia Law School Blue Sky Blog (August, 2020); “Number of African Merger Control Regimes Growing - and so Is Enforcement” (March, 2020); “European Funds Comment: Highest European Court Holds Parent Companies Liable for Cartel Damages of Subsidiaries” (March, 2019) and “Excessive pricing: new use for a neglected tool in the enforcement armoury?” Global Competition Review (June, 2017).

Ms. Heemsoth graduated in 2011 with an LL.B. from King’s College London and received a Postgraduate Diploma in EU Competition Law from the same institution in 2017. She also holds a B.Sc. in International Business Economics from Maastricht University, the Netherlands. Ms. Heemsoth was admitted as a solicitor of the Senior Courts of England & Wales in 2014.

Ms. Heemsoth is fluent in German.


  • King's College London, 2017, PG Diploma
  • College of Law, Moorgate, 2012, L.P.C.
  • King's College London, 2011, LL.B.
  • Maastricht University, 2007, B.Sc.