Mark Lewis Senior Consultant

Mark represents customer- and supply-side clients in all forms of information technology, business process and operations sourcing and outsourcing transactions.

He advises on the deployment of advanced technologies and related business models, including cloud computing, digitalisation, blockchain, artificial intelligence and robotic process automation. He also advises on cyber-related issues.

For over 30 years, and recognised in the market as one of the UK’s leading practitioners, Mark has specialised in transactions for, and advice on, the acquisition and use of IT products, systems and services and business process services, including all forms of outsourcing and managed and shared services transactions. Many of them are mission- or business-critical for his clients.

Much of his IT and outsourcing work is in the financial services sector. His clients have included global, FTSE and challenger financial services firms and fintech providers in the banking, insurance and asset management industries.

In all the sectors he covers, Mark has represented a broad range of IT and business process service providers, from the largest globally to early-stage niche technology companies.

Mark is a Visiting Professor in Practice in the Department of Law of the London School of Economics & Political Science, where he focuses on advanced technologies in the context of law, regulation, business and society.

What people are saying


"An experienced, knowledgeable and well-rounded lawyer in the field, Mark Lewis has pretty much seen and done it all several times before."

Chambers UK 2022

"Mark Lewis is an accomplished outsourcing specialist who advises retail and investment banks and many of the world's leading IT consultancies on complex transactions."

Chambers UK 2020

"Mark Lewis has a wealth of experience advising clients on IT and business process outsourcing. Interviewees describe him as 'an impressive operator' who is 'very supportive and enjoyable to work with'."

Chambers UK 2020

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