Mr Mark Prinsley > Mayer Brown International LLP > London, England > Lawyer Profile

Mayer Brown International LLP
Mark Prinsley photo

Work Department

Intellectual Property


Mark Prinsley concentrates on non contentious intellectual property including, in particular, IT project and outsourcing work. Mark is head of the Intellectual Property & IT group in London as well as the outsourcing practice. His practice involves acting for customers at all stages of outsourcing transactions. Recent outsourcing projects have included acting for a commodity exchange in the outsourcing of its IT functions; a telecommunications company in IT outsourcing; a global bank in the outsourcing of its human resources functions; a global chemicals company in outsourcing its Finance and Accounting functions; a global automotive company in the outsourcing of human resources functions; and a consumer goods company in Finance and Accounting outsourcing. Mark also works on the technology aspects of corporate transactions and advises online gambling businesses including, in particular, in relation to international activities of UK operators.


University of Oxford, Brasenose College 1978 Law Degree

Lawyer Rankings

London > Industry focus > TMT

Mayer Brown International LLP‘s TMT offering includes significant strength in media and technology mandates. Robert Hamill is a key figure for clients in the media sector, where Miles Robinson is especially well regarded for his dispute resolution experience. Mark Prinsley heads up the technology-focused London offering, while the firm also provides corporate support on technology matters, with Richard Page and senior associate Harriet Hainsworth key figures for transactions and acquisitions.

London > TMT (technology, media and telecoms) > Fintech

Mayer Brown International LLP deals with issues in the fintech space relating to banking, IP, M&A, consumer finance, outsourcing, cryptocurrency and blockchain mandates, cloud transactions, and payment, cybersecurity and financial services regulation work. The practice advises global financial institutions as well as newer fintech entrants. Mark Prinsley, who is head of the intellectual property and IT group, supports technology-based businesses at all stages of outsourcing transactions. Co-head Chris Chapman focuses on contentious and non-contentious regulatory issues under UK and EU law, and Oliver Yaros is recommended for handling fintech and digital transformation projects.

London > Risk advisory > Data protection, privacy and cybersecurity

Mayer Brown International LLP is recognised for its ‘cross-border coverage and expert knowledge and background in cybersecurity and data protection law’. ‘Stand-out partner’ Mark Prinsley leads the practice and has extensive experience in advising pensions and clients in financial services sector on privacy and compliance matters. Prinsley works alongside cybersecurity expert Oliver Yaros.

London > TMT (technology, media and telecoms) > IT and telecoms

Mayer Brown International LLP‘s technology transaction practice assists clients with IT supply matters, service contracts and outsourcings, as well as M&A, capital raisings and other transformative business transactions for technology-based companies, and, in particular, clients in the financial services sector. The team is jointly led by Mark Prinsley, who predominantly advises technology-based businesses on outsourcing transactions; Andrew Stewart, who acts for on finance and accounting, human resources, facilities management, IT and telecoms matters; and Richard Page, who has a strong TMT practice focusing on M&A mandates. Oliver Yaros is also a key team member, handling financial industry utility projects, technology outsourcing projects and IT systems procurement transactions.