Mark Lewis Senior consultant

Contact details

Mark Lewis

Mark Lewis
Senior consultant

T: +44 20 7809 2155 M: +44 7554 776 866 Email Mark | vCard Office: London

For over 35 years, and recognised as one of the UK’s leading practitioners, Mark has specialised in transactions for, and advice on, the acquisition and use of IT and business process products, systems, and services, including all forms of outsourcing, managed services and cloud computing transactions, many of them mission- or business-critical.
  • Profile
  • Services
  • Sectors

Mark represents customer- and supply-side organisation in all forms of IT, business process and operations sourcing and outsourcing transactions.

He advises on the deployment of advanced technologies and business models, including AI, cloud computing, digitalisation, and cyber-related issues.

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

His other clients have included governments, international organisations, and corporates in the utilities, media, business services, manufacturing, mobile telecommunications, security and aviation sectors.

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. Representing both customers and providers – which is rare in the market - gives him an unrivalled perspective of both sides in any IT and outsourcing transaction. This enables him to help clients on both sides secure effective and long-lasting commercial relationships.

Mark is a Visiting Professor in Practice in the Law School of The London School of Economics and Political Science, where he has lectured on AI and machine learning, cyber security and resilience, cloud computing, and legal technologies. 

"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 2024

  • Commercial, outsourcing and technology
  • Private equity
  • Pensions

Advising a household-name retail bank on a business-critical separation and migration of its entire IT and data processing operations, as well as the transfer of data, to a global service provider in one of the largest IT outsourcings of its kind in the UK.  Involved direct interaction with the PRA, FCA and Bank of England.

Acting for a FTSE 250 general insurer in a range of digital transformation and agile development projects, including the acquisition and implementation of a rating engine system and advice on the integration of robotic process automation products. Representing the company in the deployment of a cloud-based Mainframe-as-a-Service solution. Advice on third-party fintech supply chain risks.

Representing a global leader in IT services, consulting, and business process solutions for over 15 years in a range of complex IT and business process outsourcing projects in various sectors, including a business process-platform automation life and pensions and fund administration services outsourcing for a UK FTSE 100 banking group – the largest of its kind in Europe.

Advising a FTSE 250 logistics group on the acquisition and deployment of AI in its operations and the preparation of AI ethical policies and rules for use by internal data scientists.

Advising several consumer and business-focused challenger financial services firms on their acquisition and implementation of IT systems, IT infrastructure, applications development and maintenance, business process, payment and fulfilment services transactions with IT and business services providers and other financial institutions.

Acting for a leading regulated UK retirement solutions specialist provider in a simultaneous business process outsourcing lift-out of its customer-facing operations and the outsourcing to the cloud of its IT infrastructure and related services to a leading UK services provider.

Acting for one of the UK's leading pensions and retirement solutions provider, a portfolio company of a significant UK private equity house, in a complex platform and process outsourcing, including a framework for the outsourcing of the platform to other providers in the PE house portfolio.

Acting for a leading international private equity group in a framework to provide business process outsourced services to its European portfolio group on enhanced terms negotiated with one of India's tier 1 outsource providers.

Advising a household-name UK premium grocery platform and delivery service in a series of contractual ventures with two of the UK's leading autonomous vehicle technology providers involving separate collaborations in the development of AVs, including significant AI and data elements.

Representing a global, US-headquartered, household-name, IT product and service provider in a series of European and international cross-border IT desktop managed services transactions for global banking and FMCG groups, including negotiating complex sub-contracts with major IT services providers.

More: Commercial, outsourcing and technology

Representing one of the UK's leading pensions and retirement solutions provider, a portfolio company of a significant UK private equity house, in a complex platform and process outsourcing, including a framework for the outsourcing of the platform to other providers in the PE house portfolio.

Acting for a leading international private equity group in a framework to provide business process outsourced services to its European portfolio group on enhanced terms negotiated with one of India's tier 1 outsource providers.

Advising the Indian-based business process outsource provider, within the portfolio of a leading New York-headquartered private equity house, on various IT-related and operational matters in the UK and Europe.

More: Private equity

Acting for a leading regulated UK retirement solutions specialist provider in a simultaneous business process outsourcing lift-out of its customer-facing operations and the outsourcing to the cloud of its IT infrastructure and related services to a leading UK services provider.

Representing a global leader in IT services, consulting, and business process solutions in a business process-platform automation life and pensions and fund administration services outsourcing for a UK FTSE 100 banking group – the largest of its kind in Europe, with a total contract value of over £1 billion.

Acting for one of the UK's leading pensions and retirement solutions provider, a portfolio company of a significant UK private equity house, in a complex platform and process outsourcing, including a framework for the outsourcing of the platform to other providers in the PE house portfolio.

More: Pensions
  • Private capital and funds
  • Insurance
  • Technology

Advising a household-name retail bank on a business-critical separation and migration of its entire IT and data processing operations, as well as the transfer of data, to a global service provider in one of the largest IT outsourcings of its kind in the UK. Involved direct interaction with the PRA, FCA and Bank of England.

Representing one of the largest banking groups globally in the creation, structuring, and implementation of a global digital banking product.

Advising several consumer and business-focused challenger financial services firms on their acquisition and implementation of IT systems, IT infrastructure, applications development and maintenance, business process, payment and fulfilment services transactions with IT and business services providers and other financial institutions.

Acting for a FTSE 250 general insurer in a range of digital transformation and agile development projects, including the acquisition and implementation of a rating engine system and advice on the integration of robotic process automation products.

Representing the company in the deployment of a cloud-based Mainframe-as-a-Service solution. Advice on third-party fintech supply chain risks.

Representing a global leader in IT services, consulting, and business process solutions in a business process-platform automation life and pensions and fund administration services outsourcing for a UK FTSE 100 banking group – the largest of its kind in Europe.

More: Private capital and funds

Acting for a FTSE 250 general insurer in a range of digital transformation and agile development projects, including the acquisition and implementation of a rating engine system and advice on the integration of robotic process automation products. Representing the company in the deployment of a cloud-based, "Mainframe-as-a-Service" solution. Advice on third-party fintech supply chain risks.

Acting for one of the UK's leading pensions and retirement solutions provider, a portfolio company of a significant UK private equity house, in a complex platform and process outsourcing, including a framework for the outsourcing of the platform to other providers in the PE house portfolio.

Representing one of the world's largest IT and business providers in a series of outsourcing transactions for one of the UK's leading general, life and pensions and retirement solutions groups.

More: Insurance

Representing a global, US-headquartered, household-name, IT product and service provider in a series of European and international cross-border IT desktop managed services transactions for global banking and FMCG groups, including negotiating complex sub-contracts with major IT services providers.

Acting for a global leader in IT services, consulting, and business process solutions for over 15 years in a range of complex IT and business process outsourcing projects in various sectors, including a business process-platform automation life and pensions and fund administration services outsourcing for a UK FTSE 100 banking group – the largest of its kind in Europe.

Advising a household-name UK premium grocery platform and delivery service in a series of contractual ventures with two of the UK's leading autonomous vehicle technology providers involving separate collaborations in the development of AVs, including significant AI and data elements.

Advising a FTSE 250 logistics group on the acquisition and deployment of AI in its operations and the preparation of AI ethical policies and rules for use by internal data scientists.

Advising one of the UK's leading motor and general insurance groups on the acquisition and deployment of a range of robotic process automation tools, including advice on the integration of those tools within the group's IT environment and related software licensing and access issues.

More: Technology

Latest news & insights

07 Sep 2023

From News

Mark Lewis joins Stephenson Harwood's tech practice

Law firm Stephenson Harwood LLP has strengthened its technology practice with the arrival of senior consultant Mark Lewis, who will be based in the firm's London offic..

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