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Marc Dautlich

Partner – Data protection, privacy & cyber

Marc helps clients to evaluate and manage data protection and cyber risk in cross-border compliance programs, in technology projects involving the development of machine learning/artificial intelligence, Internet of Things, cloud applications, in life sciences and medical device projects covering healthcare apps, remote diagnostics, clinical trials and investigations and genomic research, and in the financial services sector across the lifecycle of product development and FinTech applications.

Marc also advises on cyber security incidents, and regulatory investigations and disputes involving data protection, misuse of private information and breaches of confidentiality, and has experience of devising voluntary redress schemes for individuals affected by such misuse or breaches.

In the area of digital regulation, Marc assists clients to navigate the EU’s digital services legislative framework, advising amongst others on the Data Act, the DSA, NIS2, DORA and related legislation.

Some of Marc’s work highlights include:

  • Defending a global advertising technology platform against proceedings brought by a leading privacy campaigner for alleged breaches of GDPR in the field of real time bidding.
  • Advising on numerous cyber incidents, with a sector focus advising banks, law firms and barristers chambers on responding to incidents and on subsequent investigations and enforcement action by data protection authorities.
  • Defending a leading global advisory services firm against threatened SLAPP proceedings and advising them on numerous subject access requests.
  • Advising providers and deployers of AI, including a sector focus in HR, advising international leadership consulting firms on the development of AI in the field of recruitment and performance management.
  • Defending a multinational data analytics and consumer credit reporting company in enforcement proceedings brought by the ICO.
  •  Advising firms in the life sciences and healthcare sectors on the full range of GDPR issues in their sector, including research institutions on anonymised data, pharmaceutical companies on medical research and clinical trials, medical device companies on development of devices, an NGO in the field of vaccine development against pandemics, and a global leading university on Freedom of Information and on international data transfers.
  • Advising banks in the UK, EU and Middle East on data transfer impact assessments, the adoption of cloud, AI customer service operations and anti-fraud technologies.
  • Advising technology suppliers on the development and supply of technologies with a particular focus on EU ePrivacy rules and their intersection with the GDPR.
  • Advising a Chinese FinTech on GDPR compliance in the development of its AML solutions for banks.
  • Supporting a leading global car manufacturer on its connected vehicle strategy.
  • Advising a FTSE100 retailer on a range of GDPR compliance issues.
  • Defending firms in several sectors against noyb complaints.
  • Supporting our Corporate and Medical Regulatory teams on data protection due diligence on a range of mid-tier acquisitions and disposals.
  • Advising an MVNO on its obligations under UK interception of communications legislation and on a range of GDPR issues.
  • Supporting a multinational commodities company on its end-to-end GDPR compliance programme.
  • Developing BCRs for a global management consulting and technology firm.

Marc advises on both UK and EU law, covering GDPR, the Data Protection Act 2018 and the ePrivacy Directive, the Network and Information Systems Regulations including NIS2, DORA and the Cyber Resilience Act, the Digital Services Act, the EU AI Act and the EU Data Act, the Freedom of Information Act and Environmental Information Regulations, the Investigatory Powers Act and the data protection and security aspects of financial services legislation and regulation (such as PSD2 and the SYSC rules in the FCA Handbook).

Marc is a member of the International Association of Defense Counsel, International Association of Privacy Professionals and ITech Law.

Marc has a good working knowledge of German and Swedish.

Credentials

  • MA (Hons), New College Oxford
  • Qualified 1996
  • Partner 2008
  • Admitted in Republic of Ireland (non-practising)
  • Registered EU Lawyer at the Brussels Bar

Publications

Data Protection publication

Read here

What others say

"Marc is absolutely first-rate for complex data protection matters." Chambers and Partners 2025
"He is reassuring and extremely responsive, and his breadth of knowledge is always expanding." Chambers and Partners 2025
"Marc Dautlich - we have worked with Marc for a number of years and he has always impressed with his expertise, clear communication and approachable manner." Legal 500 2025
"He's a seasoned partner who is well aware of the concerns of his corporate clients." Chambers and Partners 2024
"Marc Dautlich is incredibly experienced, measured and commercially minded in tackling issues, assessing risks, finding solutions and adapting his approach." Chambers and Partners 2024
“Marc Dautlich – a leading expert in the field, over a number of years Marc has helped us to navigate through multiple complex issues by providing clear, commercial advice.” Legal 500 2024
“Marc Dautlich and Jamie Drucker have been incredible in helping with addressing GDPR issues. They are very knowledgeable about UK and EU GDPR. Not only are they diligence in their work, they are also responsive and available considering that different time zones and short deadlines. They understand their clients’ concerns and limitation and work within the law to satisfy the clients’ needs. Its pure pleasure to work with them knowing that they will be supportive and understandable of the clients’ positions.” Legal 500 2024
“Marc Dautlich is celebrated for his 25-plus years of experience advising on data protection strategies and evaluating cyber risk.” Who's Who Legal Data 2023
“Marc Dautlich has pre-eminent knowledge of the use of data in the technology market, including the fintech sector. His impressive practice sees him advise clients on a wide array of matters, including compliance and breach response.” Chambers and Partners 2023
“Marc is very approachable and pragmatic in his responses, very calm and level headed and a pleasure to deal with.” Chambers and Partners 2023
“He's fantastic to work with: he provides first rate advice, is practical and personable.” Chambers and Partners 2023
“Marc Dautlich has extensive experience in advising on cyber and data breach incidents and the sharing of medical data.” Legal 500 2023
“We have been working with Marc Dautlich for a number of years and simply cannot fault his approach to complex legal issues or the quality of his advice.” Legal 500 2023
“He's definitely a leading expert in the field. We get very good technical advice that is pragmatic and commercial. We can easily apply his advice and he is approachable and easy to deal with.” Chambers and Partners 2022
“Marc Dautlich has pre-eminent knowledge of the use of data in the technology market, including the fintech sector. His impressive practice sees him advise clients on a wide array of matters, including compliance and breach response.” Chambers and Partners 2022
“Marc Dautlich cuts through the legal complexity and provides absolutely first class, practical advice every time.” Legal 500 2022
"He [Marc Dautlich] is knowledgeable, calm and pragmatic and is helpful in guiding us step by step through an unknown situation." Chambers and Partners 2021
"He [Marc Dautlich] has an encyclopaedic knowledge of the law, and for really tricky technical questions he always has an answer." Chambers and Partners 2021
"Marc Dautlich has pre-eminent knowledge of the use of data in the technology market, including the fintech sector." Chambers and Partners 2021
"He [Marc Dautlich] has an incredibly wide knowledge of privacy and is always able to help us resolve matters." Chambers and Partners 2021
"Marc Dautlich is an expert in financial services regulation, including PSD2 and the FCA Handbook." Legal 500 2021
"We’ve worked with Marc for a number of years now and simply can’t fault the advice and guidance he has provided during that time." Legal 500 2021
"Marc is always approachable, at the top of his game technically and tailors advice and level of detail so that it can speak directly to the business." Legal 500 2021
"He [Marc Dautlich] has demonstrated tremendous patience in dealing with a high-growth U.S. technology company new to the UK market and the laws applicable to that market." Legal 500 2021

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