Nassos Kalliris

I am an associate in the Finance & Financial Regulation group in London and a member of the firm's international payments team, specialising in financial services regulation.

I've been advising clients on a wide range of financial services regulatory and compliance matters within the UK and the EMEA region, with a particular focus on payment systems. The scope of my advice includes, inter alia, issues related to the implementation of the Payments Package (PSD2 and Interchange Fee regulation), the UK Payment Services Regulations, the UK and EU Money Laundering Regulations, the UK and EU Wire Transfer Regulations, the EU Cross-Border Regulation and the EU SEPA Regulation. In parallel to providing advice to clients throughout the payments ecosystem and broader financial services sector, I've also been advising on the application of the regulatory framework in the nascent FinTech space and the regulation of cryptoassets.

I have significant experience on advising clients on the interplay between competition law and payments regulation. I have worked across four countries (UK, US, Belgium and Greece) and developed a diverse range of experience from roles held with international law firms, in-house financial services companies and government authorities (the European Commission and the United Nations, respectively).

As part of my previous role at an international payment institution, I advised the business on the application of the Interchange Fee Regulation and PSD2 to co-brand, agency, licensing and merchant recruitment agreements with partners. Similarly, I am also experienced in working on the implementation of Open Banking and the rules on access of authorised or registered payment service providers to payment systems under PSD2 and equivalent UK (on shored) regulation.

In the past, I've also represented leading multinational firms in a variety of proceedings pending before the European Commission and the national competition authorities of several EU member states.

I am dual qualified, as a Solicitor of the Senior Courts of England & Wales and a Lawyer at Court in Athens (Greece).