Tom O’Byrne


Contact details for Tom O’Byrne:

Phone: 021 7301 316



Tom deals with commercial disputes.  He acts for a broad range of domestic and international corporate clients, as well as public sector bodies.

Tom has particular expertise in complex contract disputes and real estate disputes. He acts in judicial review proceedings, professional negligence actions, shareholder and corporate disputes, regulatory prosecutions and disputes in the energy, construction and financial services sectors.

Tom has expertise in contentious insolvency and restructuring matters, representing both institutional creditors and insolvency office-holders.  He regularly deals with disputes in the context of cross-border insolvency proceedings.

Alternative dispute resolution is a core facet of Tom’s practice. He is experienced in the area of commercial arbitration. He assists clients in availing of mediation and expert determination, as go-to means of resolving disputes.

Tom has been involved in a number of cutting-edge interim and interlocutory applications, including Mareva (freezing) injunctions, planning injunctions, garnishee orders, non-party discovery, jurisdictional challenges, share charging orders, pioneering remote hearings, modular trial orders and security for costs.

Tom also advises on commercial landlord and tenant law issues, and supports the firm’s transactional teams in advising on planning law and environmental law.

Recent testimonials:

‘Tom O’Byrne is an outstanding partner. He is always available and turns work in an extremely efficient manner. He consistently comes up with approaches to the benefit of the client in a cost effective manner. He is always conscious of the drivers and internal operations of our business.’ – Legal 500 (2021)

‘We have primarily dealt with Tom O’Byrne in this practice. He has been an outstanding and solid individual to work with. He has always taken a very balanced view, always with common sense to the forefront, which is perhaps the most uncommon thing of all. We always felt at ease with him and depended absolutely on his judgement, which we found to be without fault. In short, we have found everyone at the firm to be a pleasure to deal with and we always felt very comfortable in their hands.’ – Legal 500 (2021)

‘I work with Tom O’Byrne in a number of matters. Tom is most approachable and has a fantastic ‘bedside’ manner. He is technically excellent in a wide range of disciplines. Nothing is too much trouble for Tom and he works within tight timelines. You can rely on Tom to provide novel suggestions to tough legal queries.’ – Legal 500 (2020)

‘I have found him to be courteous, level headed, competent and down to earth.’ – Legal 500 (2020)

Professional Qualifications

Admitted as a Solicitor in Ireland


BCL (University College Cork)

Diploma in Commercial Litigation (Law Society of Ireland)

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