Mark is a senior consultant in the Financial Services & Markets Department, having been one of the founding partners of the department and formerly Head of the firm's Financial Products and Payments Group. As a partner, Mark also held senior positions in a number of the firm's governance functions.
He advises on a broad range of financial services and markets issues including securities trading, clearing, settlement, payments, derivatives, custody, insolvency, banking, digital assets, FinTech and financial product development. Mark has particular expertise in advising the operators of systemically important financial market infrastructure, including payment systems, central/digital securities depositories and central banks.
He has been consistently recognised over the past 25 years as a leading individual in the financial services and markets space, being inducted to The Legal 500's "Hall of Fame" and recognised by Chambers and Partners as a "Senior Statesperson". He was identified in 2026 as one of five "FinTech Regulation Power Players" by Financier Worldwide.
Mark has a market-leading reputation for advising on complex, innovative and paradigm-shifting financial market infrastructure projects of systemic importance. He has previously led the firm's work on the legal, regulatory and contractual models underpinning the provision of real-time delivery-versus-payment facilities for the UK and Irish securities markets (for which his team was "highly commended for innovation" in the Financial Times Innovative Lawyers Awards), the dematerialisation of the UK's money markets (for which his team won 'Corporate Team of the Year' in The Lawyer Awards) and the UK payment system for the image processing of cheques and other paper instruments. Most recently, Mark played an important role in the Travers Smith team that won the "Moving the Market Forward" FT Innovative Lawyers Award for the launch of a new Euro payments mechanism with systemic importance for the market.
Mark is an erstwhile member of the Financial Law Committee of the City of London Law Society (chairing its intermediated securities sub-committee) and of the FMLC's Financial Market Infrastructure Scoping Forum. He remains a key participant in various expert working groups invited by the CLLS, FMLC and HM Treasury to assist on a diverse range of financial markets issues, including the regulation of financial market infrastructures, cryptoassets and distributed ledger technologies; securities laws; "good faith" and financial contracts; market disruption; settlement finality; conflict of laws; and financial collateral (including the use of stablecoins and other digital assets).
He is also a contributor to Yeowart & Parsons on The Law of Financial Collateral.