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Aaron Green

Principal Associate

Antitrust and competition | Foreign direct investment and national security | Industrials | Infrastructure | Technology |

Rising Star - Competition and Antitrust

Euromoney’s 2022 Expert Guides

Profile details

About Aaron Green

Aaron is a Principal Associate in our Antitrust, Competition and Trade practice, based in Brussels. He has over a decade of experience advising on all areas of EU, UK and international competition law, with particular expertise in complex merger control proceedings and cross-border antitrust investigations. He is also a leading practitioner in emerging digital markets regulation in Europe and the UK, and is experienced in advising at the intersection of competition law, digital markets regulation and data privacy.

He has extensive experience of EU, UK and global merger filings, having advised clients on several complex Phase I and Phase II merger control filings requiring remedies to the European Commission and other international competition authorities. Aaron also regularly advises on cross-border investigations into anti-competitive agreements and abuse of dominance, global antitrust compliance and best practice, and on competition and regulatory issues in litigation and arbitration proceedings.  

Aaron has extensive experience advising major tech companies on the impact of and ongoing compliance with emerging digital regulatory regimes such as the EU’s Digital Markets Act and the UK Digital Markets, Competition and Consumers Bill. His experience includes a secondment at a major tech client advising on Digital Markets Act compliance. 

While Aaron specialises in advising industrials clients in transition and major tech clients, he regularly advises across a broad range of other sectors and industries, including in particular in the logistics, energy and infrastructure sectors, as well as for private capital clients.

He speaks English and French.

Recent work

Aaron’s experience includes advising:

  • A gatekeeper on all aspects related to the EU Digital Markets Act, including gatekeeper designation, the specification of core platform services and ongoing compliance.
  • Hyundai Heavy Industries Holdings on the EU merger control aspects of its proposed acquisition of Daewoo Shipbuilding and Marine Engineering, which was subject to an in-depth Phase II review by the European Commission.
  • Saint-Gobain on the global merger control strategy for its $2.3bn all cash acquisition of GCP Applied Technologies, including the unconditional Phase I merger control clearances in Europe and the UK.
  • AstraZeneca on the EU and UK merger control aspects of its $39bn acquisition of Alexion Pharmaceuticals. 
  • Maersk on the merger control clearances of its acquisition of Hamburg Süd in over 20 jurisdictions including the EU, China and South Korea.
  • Maersk on the unconditional merger control clearances of its acquisition of Senator International.
  • Holcim on the merger control aspects of its $43bn merger of equals with Lafarge, and the subsequent divestment of businesses in 15 countries.
  • CK Hutchison on the €21.8bn combination of its Italian mobile business with Wind Italy to create the largest mobile operator in Italy, including the negotiation of a complex remedy package.
  • The administrators of Monarch Airlines on the EU and UK aviation regulation aspects of their successful sale of Monarch’s airport slots, including before the UK Civil Aviation Authority and in proceedings in the High Court of England & Wales, which were successfully overturned in the landmark judgment of the Court of Appeal.
  • The administrator of Flybe on the antitrust and airline regulation aspects of the administration, including before the Civil Aviation Authority.
  • On the European Commission’s antitrust investigation into cross-border access to pay-TV.



  • Avocat, Barreau de Bruxelles
  • Solicitor, England and Wales
  • Solicitor, Ireland


  • Postgraduate Diploma in EU Competition Law, King's College London
  • Legal Practice Course, BPP Law School London
  • Master I en Droit Europeen, Universite de Rennes I
  • LLB with Honours in European Law (Maitrise), University of Exeter