Having worked in both top ranked private practice employment teams and major high-profile organisations, Dónall has first-hand experience in managing complex and sensitive matters by grounding his advice in the reality his clients are facing.
Dónall is qualified to practice in both the UK and Ireland and has helped a multitude of international companies enter and exit numerous European jurisdictions, as well as advising on front page race discrimination claims, large scale reorganisation projects and international transactions in excess of $1billion.
He has a particular focus on the sports and technology sectors and has gained a deep understanding of their specific requirements through his ability to swiftly appreciate organisations’ needs and outcomes.
Dónall has in-house employment experience and worked as employment counsel for Improbable Worlds Limited and the Premier League.
He is a member of the Employment Lawyers Association and Employment Lawyers Association of Ireland.
“We’ve had the pleasure of working with Sophie Vanhegan, Dónall Breen, and the Littler UK team during our direct employment expansion across the United Kingdom and the European Union. Their legal support has been consistently outstanding. In particular, their guidance on UK employment law has been deeply thoughtful, precise, and tailored to our company’s unique culture and operational model. What sets them apart is their genuine effort to understand not just our policies and internal documents, but the underlying values and practices that shape how we operate.”
Legal 500, 2026