Marjorie C. Holmes Photo

Marjorie focuses on competition law in several sectors, including aviation, marine, insurance, construction, energy, life sciences and finance sectors. Marjorie has represented companies in a number of important investigations by the European Commission and the UK Competition Authorities. She also acts as legal adviser to several trade associations and has significant merger control experience including dealing with phase 2 clearances. Marjorie has experience of obtaining many individual exemptions from the European Commission pre 2004. This experience is invaluable to creating in accordance with Article 101 (3)-- self assessments which are not vulnerable to challenge for parties who set up non-full function joint ventures or loose cooperations. Marjorie's work also includes public interest tests, national security concerns and price control references, key legal themes that have characterised the competition landscape in recent years. She is one of the few lawyers with UK High Court, Court of Appeal and ECJ private actions competition law related experience, including running cases to successful judgements.


  • University of Cambridge
  • London School of Economics and Political Science, BSc, Faculty of Economics

  • England and Wales
  • Ireland

  • Member, British Maritime Law Association European Group

Awards & Recognition

  • Non-Governmental Adviser, International Competition Network
  • Recommended Global Leader in GCR’s Who’s Who Legal: Competition, 2022
  • Listed as a 'Leading Individual' in The Legal 500 UK for Corporate & Commercial EU and competition, 2021-2024
  • Listed as a leading Competition & Antitrust practitioner in the UK in Euromoney’s Expert Guides, 2021
  • Ranked in Chambers Europe for UK Competition Law, 2020
  • Selected through peer review for inclusion in The Best Lawyers™ in the United Kingdom for Shipping Law, 2009-2024
  • Ranked in Chambers UK for London Competition Law, 2020

Notable quotes

  • 15 September 2022 "Europe unlikely to reverse consortia block exemption regulation" Lloyd’s List
  • 4 October 2022 "Carriers and owners submit case for extending consortia block exemption" Lloyd’s List
  • 12 October 2022 "Green Seas: Are battles ahead for shipping when competition law and green drive collide?" TradeWinds
  • 10 October 2023 "Carriers lose fight to keep consortia block exemption regulation" Lloyd’s List