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Work +353 1 418 0600
Fax +353 1 418 0699
Brussels, Dublin, Dublin

Mark Heslin

Work +353 1 4180600

Work Department

Litigation & Dispute Resolution


Mark is a partner in our litigation & dispute resolution team. Mark works with with major financial institutions, State bodies, owner-managed businesses, corporates and individuals. For over two decades Mark has practiced exclusively as a litigator throughout the Irish Courts system, with a particular focus on commercial disputes and proceedings in the Commercial Court.

Mark has wide-ranging expertise in administrative law, arbitration, banking, bankruptcy, contractual disputes, company law, construction, constitutional law, debt recovery, enforcement, equality, insolvency, judicial review, landlord and tenant law, negligence, planning, probate, professional negligence and other tort actions.

Recent experience

  • Kenmare Property Finance Limited in successfully opposing an application for injunction to prevent execution of possession order, previously obtained by Beauchamps in the High Court and upheld in the Supreme Court, in respect of boutique hotel premises and securing High Court order striking out the plaintiff’s proceedings as an abuse of process
  • Allied Irish Banks plc in ongoing defence of High Court proceedings brought by guarantor who seeks to avoid €1.5 million personal guarantee
  • NAMA in securing a €25 million High Court Judgment against a debtor and obtaining Judicial Review from the Supreme Court quashing attempts by the debtor to bring private criminal prosecutions against individual staff members of the former IBRC
  • A significant property holding and development company in successfully opposing an application for mandatory injunction, the effect of which would have been to require our clients to enter into a disputed multi million euro commercial agreement which our clients previously terminated
  • Allied Irish Banks plc in the successful defence of proceedings brought by the members of a family trust who claimed to be entitled to the beneficial interest in a multi million euro property portfolio in the UK and Ireland over which the client bank held security granted by the legal owners
  • A receiver in securing High Court Injunctions granting possession of valuable commercial premises in favour of the Receiver despite objections by a mortgagor and its tenant and the latter’s attempt to rely on a lease granted without mortgagee consent.


  • Tutor for the Law Society on its 2015 course “Certificate in Banking Law, Practice and Bankruptcy” for Solicitors
  • Published regularly in peer-reviewed legal publications including the Commercial Law Practitioner, The Conveyancing and Property Law Journal, Irish Business Law Quarterly and the Dublin Solicitors Bar Association “Parchment”


  • B.A. in Legal Systems and Philosophy (University College Galway 1990)
  • LL.B. Degree (University College Galway 1992)
  • Solicitor (Law Society of Ireland, 1995)


Dispute resolution

Within: Dispute resolution

Beauchamps regularly acts for clients in highly regulated industries such as financial services, healthcare and insurance. Practice head Emma Keegan is representing the Health Information and Quality Association in relation to a statutory investigation into the National Maternity Hospital. Thomas O’Dwyer secured an injunction to block several piracy websites on behalf of the Motion Picture Association of America. Mark Heslin, Barry Cahir and Claire Callanan are also noted.

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Within: Employment

Beauchamps advises on all areas of employment in the contentious and non-contentious space. Former practice head Dermot Casserly is now with DWF, where he is an employment partner. Sandra Masterson Power, who has experience in handling unfair dismissals and industrial relations matters, and Mark Heslin now head the department.

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Legal Developments in Ireland

Legal Developments and updates from the leading lawyers in each jurisdiction. To contribute, send an email request to
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    As we are all well aware this is the most turbulent climate for business both nationally and internationally, that any of us have experienced. We have therefore focused this bulletin on areas where we believe we can help you take decisive steps to manage the issues that are required to get through the downturn and be properly prepared for the future.
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