Brian Johnston


Brian is a Partner on the firm’s Privacy and Data Security team. 

Brian provides companies with solutions to their privacy and data protection problems. His focus is on helping some of the world’s leading technology companies to implement global privacy and data transfer programs and launch new and innovative technologies in Europe. Brian also has particular expertise advising companies throughout their engagement with regulators and law enforcement agencies, including helping them to navigate and resolve complex investigations and enforcement action.

Prior to joining the firm, Brian gained much of his experience with a leading technology firm in London and in-house at Samsung as its European Data Protection Officer. He also gained valuable experience working in the Irish Data Protection Commission a number of years ago. This diverse and varied experience means Brian has a strong understanding of the privacy and data protection challenges companies face and the pragmatic and commercial advice they need.


  • Data Protection Law
  • Technology Law
  • Consumer Law
  • Contract Law
  • Regulatory Law

Representative Matters

  • Advising Facebook on various regulatory and law enforcement matters in the EU, including publicised regulatory investigations under the GDPR.
  • Advising WhatsApp and Instagram on publicised regulatory investigations under the GDPR.
  • Advising one of the world’s leading smart phone manufacturers on its GDPR compliance strategy.


Legal 500, 2020:

Brian is noted as a "recommended lawyer". 

  • LinkedIn

Areas of Expertise

Technology Law Privacy & Data Security Commercial Contracts & Sourcing

Professional Memberships

Law Society of Ireland


University College Dublin, Bachelor of Civil Law (BCL)

University College Dublin, Master of Laws (Commercial Law) (LLM)