Mark focuses on U.K. financial services regulation. This includes advising on the rules of the FCA and PRA, regulatory perimeter and financial promotion issues, the recast Markets in Financial Instruments Regulation, the Alternative Investment Fund Managers Directive, the Market Abuse Regulation, and the European Market Infrastructure Regulation, as well as anti-money laundering and sanctions compliance. He also advises clients in connection with corporate transactions, including due diligence and obtaining U.K. financial regulatory approvals in relation to acquisitions.

His clients include international banks, fund managers, payment services and fintech companies and other financial institutions.