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Patrick McGahan specialises in competition damages litigation before the English courts, and has expertise in developing and coordinating multi-jurisdiction litigation strategies.  Mr. McGahan works closely with other members of the Firm’s Antitrust and Competition Practice in counseling corporate and institutional clients, evaluating potential claims and developing strategies to recover losses caused by anticompetitive conduct.  He also has experience acting for clients engaged in arbitrations (both investment treaty and commercial) and pieces of general commercial litigation.


  • Representing various corporates, funds, asset managers and institutional clients in relation to damages claims arising from certain banks’ collusive manipulation of the foreign exchange market.
  • Acting for various national and multinational retailers in relation to competition damages claims arising from Visa and MasterCard’s respective card payment schemes.
  • Represents several large multinational corporations alleging that Goldman Sachs, JPMorgan, Glencore, and their warehouse affiliates conspired to restrict the supply of aluminum in London Metal Exchange-approved warehouses.
  • Acted for numerous clients in competition law investigations, both internal investigations and those brought by the Competition and Markets Authority, the European Commission, and other regulators.
  • Spent four years in the London office of Freshfields Bruckhaus Deringer LLP, acting in many of the leading English competition damages cases, including National Grid Electricity Transmission Plc v ABB Ltd.
  • Acted for St. Lucia in its successful defence of RSM Productions’ ICSID arbitration claim.


  • Admitted to practice in England & Wales and Queensland, Australia


  • King’s College London (Postgraduate Diploma in Competition Law, 2015)
  • University of Queensland (Bachelor of Laws (First Class Honours) and Bachelor of Arts (Economics/Political Science), 2010)


  • Spent a year as the Associate to His Honour Justice Andrew Greenwood at the Federal Court of Australia