
Matheson LLP is at the forefront of merger control, especially phase 2 merger review cases by the CCPC. It continues to stand out for its expertise in media mergers and its experience with the Irish FDI screening regime. It has worked on all completed CCPC investigations of recent years and has represented clients in a series of major competition cases, including the headline trucks litigation. Niall Collins heads the competition and regulatory group and remains a market leader in merger control. Kate McKenna has also made an impression in merger control and competition litigation. Calum Warren is another emerging talent and Simon Shinkwin was recently promoted to the partnership.
Testimonials
Collated independently by Legal 500 research team.
‘Niall Collins is great, responsive, smart and practical. Conor Slowey, who recently the joined the team, is always across the detail. ’
‘Calum Warren is a particularly skilled lawyer and a pleasure to work with. He is clearly an expert in competition law. He is always approachable and gives very practical advice, breaking down a very complex area of the law into understandable language. I would highly recommend him.’
‘Kate McKenna is an outstanding talent. She has wonderful insights and wisdom and has a real talent in delivering difficult messages in a collaborative and easy to understand fashion. She is always calm and collected in her manner and extremely professional.'
‘Niall Collins is an excellent partner with an extraordinarily high level of client service. Simon Shinkwin is excellent, highly responsive and has a strong grasp of the issues.’
‘Niall Collins and Calum Warren are amazing practitioners and individuals in general. Always available to offer top notch legal advice. Very knowledgeable, very informed and connected, offering first class business relevant advice. My first choice in all Irish competition law questions.’
‘Niall Collins is a great combination of technical skill, client management, commerciality and responsiveness. One of the best competition partners I've worked with.'
‘Niall Collins is a seasoned practitioner who is a real voice of authority on antitrust matters in Ireland. The Irish merger control process can be very involved and having Niall on the team is a game changer. Calum Warren is an exceptional younger partner. He is thorough and knowledgeable. He provides a great service to clients.’
‘Niall Collins - pragmatic, and a pleasure to deal with. Great to have on your side. Kate McKenna - very good technically and very responsive. Simon Shinkwin - excellent competition lawyer and a pleasure to deal with.’
Key clients
- Cellnex Telecom
- Oracle
- Aon
- Kerry Group
- Credit Union Mortgage Services Ireland
- Winthrop Technologies
- CMA CGM
- Brookfield Corporation
- Tirlán Co-operative Society
- Mediahuis NV
- AXA S.A.
- Meta
- Bauer Media Group
- Blackrock Health
- CLdN
- Gilead
- Grain Management
- Insurance Ireland
- Hayden AI
- Le Creuset
- MTM Packaging
- Smurfit Kappa Group
- Ticketmaster
- Bank of Ireland
- Three Ireland (and its parent CK Hutchison)
- Parma Investments Limited, and its parent Goodman Group
- Daily Mail / DMGT plc
- Discovery
- Enterprise Ireland
- ASL Aviation
- Brokers Ireland
- Orpea S.A
- Ornua
- Speed Fibre Group (enet, Airspeed and Magnet) & its parent AMP Capital
- SSE
- Irish Distillers and its parent, Pernod Ricard
- AIB
- An Post
- Fexco
- Abtran
- Aramark
- Bord Na Mona
- Boskalis
- College Proteins
- Commercial Mushrooms Producers Co-Operative Society (CMP)
- Carr Communications
- Chapel Gate
- Commscope
- Discovery
- Department for Energy
- daa plc
- Disney
- Energia
- FitBit
- Irving Oil / Top Oil
- JPI Media plc
- Microsoft
- Monument Re
- Monaghan Mushrooms
- Newsbrands
- Nicholl (Fuel Oils) Ltd
- Nomad Foods
- Oaktree
- Opel
- Post Office Limited
- Saint Gobain
- Sky Ireland
- Sport Ireland
- TINE
- TripActions
- Irish Life
- Waystone (Ireland) Ltd
- Iveco SpA
- Linnaeus Veterinary Group
- Vermilion Energy Inc
- Vodafone Ireland Ltd
- Worldwide Flight Services (WFS)
- Carne Global Financial Services Ltd
- Royal Bank of Canada
- Supersapiens
- Shares.io
- Alibaba.com
- Aer-Rianta International cpt
- Fresenius Medical Care (Ireland) Ltd
- Wellster Healthtech Group GmbH
- Virgin Media
- Macquarie Group Limited
Work highlights
- Advised Smurfit Kappa Group on its $11.1bn acquisition of Westrock, including as lead antitrust adviser on all European merger filings and one of the first FSR filings to the European Commission.
- Advised Bauer Media Audio,on a series of acquisitions in the media sector including obtaining regulatory approvals.
- Acted for Cellnex Telecom in the sale of its Irish business to Phoenix Tower International.
Lawyers

Practice head
The lawyer(s) leading their teams.
Niall Collins