Courtney has developed a diverse practice in commercial, public international and human rights law. Courtney is instructed on a broad spectrum of litigation in the English courts (Commercial Court, King’s Bench Division, Court of Appeal, Supreme Court) and in international arbitrations under a variety of institutional rules, and she regularly acts for and advises States and private entities on a range of public international law matters.
Courtney has recently appeared in several high-profile cases, across a variety of subject matters. These include acting on behalf of the United Kingdom at the International Tribunal for the Law of the Sea (Request for an Advisory Opinion submitted by the Commission of Small Island States on Climate Change and International Law); on behalf of Ukraine at the European Court of Human Rights (Ukraine v Russia); on behalf of a P&I insurer seeking anti-suit relief against Venezuela (UK P&I Club NV and another v Republica Bolivariana de Venezuela); on behalf of Greggs plc in its claim against Zurich for over £150 million in business interruption losses arising from the COVID-19 pandemic (Greggs Plc v Zurich Insurance Plc); and on behalf of an international athlete at the Court of Arbitration for Sport (UK Anti-Doping v Boardman).
Courtney is also an expert on INTERPOL. She is the co-author of the leading text on INTERPOL, The Legal Foundations of INTERPOL (2nd edition, 2020), advises States on INTERPOL matters, and is well-versed in challenging INTERPOL red notices.
Before joining Twenty Essex, Courtney qualified as a solicitor-advocate and worked at a leading Wall Street firm. Courtney was also an Assistant Legal Adviser at the UK Foreign, Commonwealth & Development Office, where she advised on urgent issues arising in the context of the COVID-19 pandemic, and she was a Judicial Assistant at the UK Supreme Court to Lord Hodge and Lord Lloyd-Jones. She is a graduate of Yale University and the University of Cambridge.Privacy notice