• Diarmaid Gavin



    Diarmaid is a partner in the firm's Corporate and Commercial Department advising a range of clients in different industry sectors on a broad range of corporate and commercial legal matters.  

    On the transactional side, Diarmaid has acted for a number of clients in the agri-food, life sciences, technology and media sectors on M&A transactions, corporate group restructurings, joint ventures and equity fundraisings. Particular areas of expertise include technology and outsourcing projects, intellectual property and R&D arrangements.

    Prior to joining Ronan Daly Jermyn, Diarmaid worked with a “magic circle” law firm in its London and Brussels offices where he advised on merger notifications before the European Commission and the UK Office of Fair Trading (now the Competition and Markets Authority) as well as on cartel and abuse of dominance cases.


    University of Dublin, Trinity College (LLB)
    Collège d'Europe, Bruges (LLM in Advanced European Law)
    Oxford Institute of Legal Practice (Diploma in Professional Legal Studies)


    Admitted as a solicitor in Ireland.


    Diarmaid is recognised for exceptional standing in the legal community in Chambers Europe and The Legal 500.

    • "very knowledgeable, experienced and approchable" - The Legal 500 (2022)
    • "knows the terrain very well and saves clients material time as a result.’ - The Legal 500 (2022)

    • "is a leading practitioner in his area who will give you well-informed, objective advice." - The Legal 500 (2022)

    • "Diarmaid's attention to detail and meticulous manner made for a smooth journey through the transaction, despite repeated challenges cropping up throughout" - The Legal 500

    • Clients describe him as having “an in-depth knowledge of our business". ”He is very matter of fact and upfront about what is going on” - Chambers Europe
    • "very knowledgeable"; "a pleasure to work with" - The Legal 500
    • "Diarmaid was able to tailor the agreements to meet all stakeholders’ needs. His ability to listen and respond was excellent. Super customer service" - The Legal 500
    • "Diarmaid Gavin is professional and friendly. Helpful and responsive. Supportive. Brings experience in the field to bear. Realistic and pragmatic – which is something I look for in a legal advisor" - The Legal 500
    • ‘We value Diarmaid Gavin for the depth and breadth of his commercial experience with SSSA, contracts with academic institutes, and dealing with international litigation matters" - The Legal 500

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