“Marie is an amazing advocate: succinct, precise, and judges are very receptive to her… She wins so often.”
Marie Demetriou QC is widely recognised as a leading advocate in the fields of competition law, EU law, public law and human rights. In 2019-20 Marie won both the Chambers & Partners Competition Silk of the Year and the Legal 500 EU and Competition Silk of the Year awards and was also one of 12 barristers to be named as one of The Lawyer’s Hot 100 2020. Marie is also Star Rated for competition law in the Chambers & Partners directory. Since 2015 Marie has been Standing Counsel to the Competition and Markets Authority, representing the CMA in its major litigation in the courts. Between 2016 and 2018 Marie was Chair of the Bar European Group.
Marie Demetriou QC is widely recognised as a leading advocate in the fields of competition law, EU law, public law and human rights. In 2019-20 Marie won both the Chambers & Partners Competition Silk of the Year and the Legal 500 EU and Competition Silk of the Year awards and was also one of 12 barristers to be named as one of The Lawyer’s Hot 100 2020. Marie is also Star Rated for competition law in the Chambers & Partners directory. Since 2015 Marie has been Standing Counsel to the Competition and Markets Authority, representing the CMA in its major litigation in the courts. Between 2016 and 2018 Marie was Chair of the Bar European Group.
Some current and recent highlights of Marie’s practice (spanning competition law, EU law and public law) are:
Marie is Star Rated by Chambers & Partners in competition law. She is instructed in many of the leading competition cases in the CAT and the courts. Since 2015, Marie has been Standing Counsel to the Competition and Markets Authority. As well as acting for the CMA in its major litigation and investigations (including the ‘pay for delay’ appeals, Eurotunnel/SeaFrance in the Supreme Court, Ping v CMA, a number of mergers appeals and market investigations), Marie acts for a large variety of private clients in damages claims (including those arising from the decisions in Trucks, FX, Roll-on Roll-off Ferries, Gas Insulated Switchgear, Power Cables, Envelopes, Ball Bearings, Cathode Ray Tubes, Mobile Phone Batteries) as well as in stand-alone competition actions and FRAND claims. In 2019, Marie was awarded both Competition Law Silk of the Year by Chambers & Partners and EU and Competition Silk of the year by Legal 500.
Notable cases include:
Marie has acted in many high-profile and diverse EU law cases before the English and European Courts, including acting in challenges to the 2nd Tobacco Products Directive and the UK plain packaging legislation; the Micula ligitation raising the interrelationship between ICSIC arbitration awards and EU law; aviation cases (Monarch Airlines, Tui Travel and IATA); a range of pharmaceutical cases (including PTC Therapeutics, pay for delay litigation, GMP-Orphan in relation to orphan drugs); asylum and human rights claims (NS, El Kott) and sanctions cases (PMOI, Bank Saderat). Marie was a référendaire to Judge Edward at the ECJ, Chair of the Bar European Group between 2016-2018; Visiting Fellow at the Centre for European Law, King’s College, London and a Trustee of the Slynn Foundation. Notable cases include:
Marie is recommended in the principal directories as a leading advocate in public law and human rights. Prior to taking Silk she was a member of the Attorney General’s ‘A’ Panel of Counsel. She acts for both claimant, defendants and NGOs in public claw and human rights cases before the English Courts, the EU Courts and the European Court of Human Rights. Recent highlights include successfully representing Monarch Airlines in the Court of Appeal in relation to its right to landing slots, and successfully challenging the Government’s policy of deporting EEA nationals found sleeping rough.
Notable cases include:
BA, BCL (1st Class) (Oxon)
