Siobhan Costello

Siobhan Costello

United Kingdom, London
General Counsel
Profession: Lawyer, In-House Counsel
Industry: Financial Services, Competition


General Counsel at Fidel API. Until recently, Head of Regulatory Law and Policy at Visa. She has been front and centre of helping Visa navigate novel sectoral regulation and establish a meaningful dialogue with a new sector regulator with competition powers (the Payment Systems Regulator). She is a passionate business lawyer who brings her uniquely rounded perspective to solving complex commercial and regulatory issues having spent 11 years in private practice (Baker & McKenzie and CMS Cameron McKenna); and having worked at the UK’s Financial Conduct Authority.




General Counsel

Present • United Kingdom

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