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Niamh Christina Gleeson


Niamh is a highly experienced competition lawyer with over 20 years of experience in competition law specialising in the TMT sector. She has great private practice and in-house experience, having worked at Slaughter & May and Bird & Bird, followed by over 10 years as an in-house competition and regulatory lawyer for major corporations: Apple, British Telecom and Three Mobile. She has a doctorate in competition law from King’s College London and she teaches cloud computing law for LLM students. 


It all starts with 'hello'.


She is a dual-qualified lawyer (a solicitor in England and Wales and in the Republic of Ireland) and is also a practising member of the Paris bar, qualified to advise on both EU and UK competition and regulatory law. Her EU practice means that her advice on EU law is covered by EU legal and professional privileges. She has experience in technology sectors, so she has experience applying the law in a pragmatic and commercial way to clients in the IT and communications industry. She also has experience in data protection law as it relates to the cloud computing and technology sectors and is a member of the International Association of Privacy Professionals (IAPP). She has wide experience in preparing and delivering updated training on competition law and regulation.


  • Advising on EU and UK competition law for an industry association on how its members could exchange information in a way that was compliant with EU competition law.

  • Giving advice on whether a transaction falls within the UK merger control regime, and whether there could be any notification obligations under the National Security and Investment Regime.

  • Assessing whether behaviour by a dominant supplier in a specialist IT market is exclusionary and prohibited by EU competition law.

  • Helping an IT distributor with its distribution strategy that included agreements that included territorial restrictions in the European Economic Area (EEA).

  • Researching and recommending regulatory and governance mechanisms for cloud computing service providers.

  • Advising on the impact of Brexit on a range of regulations relevant to IT and technology providers, including cyber security requirements under the NIS Directive post-Brexit in the UK.


"Niamh and Aria Grace Law have been our go to lawyers at Midis Group. Niamh has assisted us with a plethora of competition law queries in relation to distribution throughout the EEA. Niamh’s advice is always practical and succinct and is always delivered promptly. Niamh is always a video call away and is happy to discuss any queries we have. We at Midis Group look forward to keep working with Niamh specifically and Aria Grace Law generally for the foreseeable future."
Clara Elkhazen, Head of Legal, Midis Group
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