Europe Guide 2026 : Ireland
Ranked Individuals
Provided by Matheson LLP
Our Competition and Regulation group is widely regarded as market-leading, and is the largest dedicated group of its kind in Ireland. The group consistently features in the highest tier of competition advisers in the top legal directories. We are a diverse and experienced group of specialists, with many of the group having previously worked in major international competition practices in both London and Brussels.
We adopt a pragmatic and commercial approach to competition and regulatory issues, and we are proactive in flagging and addressing new and novel issues to clients in good time. The success and growth of the group is built upon the consistent delivery of objectively good outcomes for clients in the most complex competition and regulatory cases.
The group has acted on the majority of the recent complex (Phase 2) Irish merger reviews. On behavioural competition matters, we are the only Irish practice to have advised on all of the recent high-profile competition investigations by the Competition and Consumer Protection Commission (CCPC). We are also advising on the most complex competition litigation matter currently before the Irish courts.
We provide expert legal advice on all aspects of EU Law, Competition and Regulatory matters, including merger control, cartel investigations, competition law compliance, dominance, State aid, competition litigation, public procurement and sectoral regulation.
Provided by Chambers
Matheson LLP enters the top tier of the rankings this year on the back of strong activity on the competition law aspects of transactions, advising on foreign direct investment and merger control filings, including those requiring phase II investigations. The law firm is also active in behavioural mandates, especially high-profile damages actions.
Provided by Chambers
Matheson LLP assisted Cellnex with obtaining competition law clearance for the sale of its Irish tower business following a phase II merger review.
Provided by Chambers
The team has excellent industry knowledge, and the advice is commercial and practical.
The team is commercial, hard working and a joy to work with.
It is a strong team with good leaders.
The team's expertise in the subject matter was clear.
The lawyers took a very pragmatic, solution-oriented approach to any issues that came up.
Provided by Chambers
Niall Collins stands out for his representation of clients in phase II merger control filings. He additionally acts on FDI filings and follow-on damages actions.
Niall Collins is very kind, knowledgeable and down to earth.
He achieves good outcomes and is a pleasure to work with.
Kate McKenna often advises clients on merger control and FDI filings. In addition, she represents clients in high-profile damages actions and in competition law compliance matters.
Calum Warren has a strong focus on the competition law aspects of transactions, assisting clients with merger control and FDI filings, as well as with the new FSR. He also represents clients in antitrust enforcement actions.
Calum Warren has impressed me with his capabilities and dealing with tight turnarounds.
He works hard and fast to help us as a business tailor a piece of advice so that it is commercially focused and useful.
He always responds quickly to last-minute emergencies and provides clear, concise and commercially-workable solutions.
He is calm under pressure but his level of responsiveness is outstanding.
Competition/European Law
Competition/European Law
Competition/European Law
Provided by Matheson LLP
Niall Collins
View profile of Niall CollinsKate McKenna
View profile of Kate McKennaCalum Warren
View profile of Calum Warren
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