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‘Matrix represents top quality.’Chambers and Partners 2014
Anti-trust, Competition Law and Regulation


Our anti-trust, competition law and regulation team have a cross-disciplinary practice that covers all aspects of competition law advice, enforcement and litigation under both UK and EU law, including:

  • administrative enforcement,
  • market investigations and merger control,
  • state aid and public procurement,
  • appeals in the General Court and the Court of Justice of the European Union (CJEU), the UK Competition Appeals Tribunal (CAT), and at appellate level in the UK Court of Appeal and Supreme Court,
  • judicial review of regulatory action,
  • actions for damages and injunctions,
  • criminal prosecutions for cartel offences.

Matrix lawyers have an exceptional range of related expertise in public law, commercial law, EU and international law, criminal law and employment law.

They have acted both for and against regulatory bodies and public agencies, including the European Commission, the UK Competition and Markets Authority (CMA; formerly the Office of Fair Trading and Competition Commission), and the major sectorial regulators such as Ofcom and the Office of Rail Regulation.

Recent cases

Members at Matrix have been involved in many important competition law cases in recent years. For example:

  • Acting for HSBC in the appeal before the CJEU against the EU Commission’s decision finding the multilateral interchange fees set by MasterCard to infringe the prohibition on anti-competitive collusion, and we are acting for twelve well known retailers on their large-scale claims against MasterCard and Visa for damages in respect of such fees.
  • Representing the CMA in a major market investigation appeal before the CAT brought by Lafarge Tarmac.
  • Advising and acting regularly for British Telecommunications (BT) in a range of telecoms and competition matters before Ofcom, the CAT, the Court of Appeal, and in the CJEU. For example, BT’s successful appeal in The Number (UK) and Conduit Enterprises v OFCOM [2009] EWCA Civ 1360, involving the supply of directory information by BT.
  • Acting for the European Commission before the General Court of the EU in defence of the Commission’s Airfreight cartel decision in Singapore Airlines v Commission T‑43/11.

Specialist areas

Matrix has some of the leading practitioners in the field of prosecutions arising out of cartel behaviour. We successfully defended certain British Airways executives accused of having committed the cartel offence in respect of air passenger fuel surcharges.

Other related areas of specialist expertise include due process issues under EU and ECHR law, anti-dumping and economic regulation by the EU Commission and the UK sectoral regulators.


Our lawyers in this area

  • Christopher Brown Christopher Brown
    Called: 2002 CV
  • Joanna Buckley Joanna Buckley
    Called: 2011
  • Nicholas Gibson Nicholas Gibson
    Called: 2009 CV
  • Eleni Mitrophanous Eleni Mitrophanous
    Called: 1999
  • Claire Montgomery QC Clare Montgomery QC
    Called: 1980 Silk: 1996 CV
  • Helen Mountfield QC Helen Mountfield QC
    Called: 1991 Silk: 2010 CV
  • Aidan O'Neill QC Aidan O’Neill QC (Scot)
    Called: 1996 Silk: 1999
  • Tim Owen QC Tim Owen QC
    Called: 1983 Silk: 2000
  • Jessica Simor QC Jessica Simor QC
    Called: 1992 Silk: 2013 CV
  • Rhodri Thompson QC Rhodri Thompson QC
    Called: 1989 Silk: 2002
  • Professor Takis Tridimas Prof Takis Tridimas
    Called: 2000
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