Katerina Soteri

Katerina Soteri

United Kingdom, London
Group Counsel at American Express
Profession: Lawyer, In-House Counsel
Industry: Competition, Financial Services, Litigation


Katerina has advised on EU and Competition Law for over 2 decades. She joined Amex in 2006 to create the EMEA Antitrust and Payments Regulation function, which she continues to lead today. In 2016 she established a Centre of Excellence for Global Payment Systems Regulation; in 2019 she was promoted to take on a Global Legal Policy and Strategy role. She previously worked at the European Commission and in the Legal Services branch of the UK OFT. She trained and qualified at Clifford Chance LLP.


English, Greek


AntitrustFinancial ServicesStrategyLitigation


American Express

Group Counsel at American Express

November 2006 - Present • London, UK

Katerina leads a diverse and multidisciplinary team of 14 lawyers across the UK, Spain, Germany, Singapore and Brazil with expertise in the intersecting areas of competition law, financial services and payments regulation. As well as leading the team that advises on EU Law and EMEA antitrust matters (e.g. counselling, M&A, regulatory enquiries), Katerina also oversees payments regulatory litigation and references to the CJEU. Following successive expansions in her role at American Express, effective January 2019, Katerina advises globally on external policy trends, regulatory engagement and related corporate strategy. Katerina is a passionate advocate for diversity and co-leads the Access & Equity Pillar of the American Express GCO Inclusion and Diversity Program. OTHER ACTIVITIES: • Committee Member of the Competition Law section of Business at OECD. • Member of the Competition Law International Editorial Board. • Expert advisor to the European Commission on Payments Regulation in the Payment Systems Market Experts Group. RECOGNITION: • 2019: 40 in their 40s notable women competition professionals – W@competition • 2016: Recognised as one of the leading women in antitrust globally – Global Competition Review • 2015: Top 40 under 40 antitrust experts globally – Global Competition Review

Office of Fair Trading

Legal Advisor at Office of Fair Trading

4 years 5 mth • June 2002 - November 2006 • London, UK

Competition Law Legal Advisor, Legal Division


Kings College, University of London

Diploma in EU Competition Law

College of Law

Legal Practice Course

London School of Economics


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