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Clifford Chance

Greg Olsen

Greg Olsen

Partner and Head of London Antitrust Practice

Partner and Head of London Antitrust Practice
Greg Olsen

Greg Olsen is the Head of London Antitrust Practice.

Greg Olsen specialises in the application of EU and UK competition law to mergers, joint ventures and commercial arrangements as well as alleged behavioural violations such as cartels and abuse of market power.

Greg also advises on regulatory investigations in a diverse range of industries including financial services, insurance, media and consumer goods.

  • Booker Group plc on the antitrust aspects of its £3.7 billion merger with Tesco plc
  • Mastercard on ‎its acquisition of VocaLink
  • NBCUniversal / Comcast on the European Commission's investigation of cross-border licensing of premium movie and pay TV content
  • Mastercard on ‎the European Commission's investigation of inter-regional interchange fee and cross-border acquiring rules
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Contact details

Career and qualifications

  • University of Canterbury NZ (LLB) 1987
  • University of Oxford, Keble College (B.C.L) 1990
  • Winter Williams Commonwealth Scholar 1990
  • Admitted as a solicitor in New Zealand 1990
  • Admitted as a solicitor in England & Wales 2002
  • Joined Clifford Chance 2007

Professional bodies

  • Committee member and past Chair of the Law Society's Competition Law Section
  • Trustee of the NZ-UK Link Foundation

Awards and citations

  • Dealmaker of the Year: Global Competition Review (GCR) Awards 2018
  • Ranked Band 2 for Competition/European Law in Chambers UK 2018
  • Identified as a leading individual in Legal 500 UK 2017 for EU and Competition