For decades, jurisdiction and recognition in Irish-British family cases ran on the shared rails of the Brussels regime. Brexit removed the UK from those rails, and families spread across the two islands, an everyday reality in the South-East, now navigate a more fragmented framework in which the right first step matters more than it used to.
Jurisdiction and the race problem
As between Ireland and other EU states, Brussels IIb continues to govern, with its strict first-in-time rule for parallel proceedings. As between Ireland and the UK, that automatic rule is gone: each jurisdiction applies its own rules, Irish jurisdiction resting on habitual residence and domicile under domestic law, and competing proceedings are managed through discretionary doctrines rather than a mechanical tiebreak. The practical consequence is uncertainty that rewards early advice: where a genuine choice of forum exists, the financial approaches of the two systems differ materially, and the choice should be made deliberately, not by default or delay.
Recognition and maintenance
Recognition of divorces between the two jurisdictions generally continues, Ireland and the UK are both parties to the 1970 Hague Convention on recognition of divorces, alongside domestic recognition rules, but the mechanics require case-by-case confirmation, particularly for older decrees or unusual fact patterns. Maintenance enforcement, formerly seamless under the EU Maintenance Regulation, now proceeds under the 2007 Hague Maintenance Convention machinery, which works but adds procedure. Cross-border pension claims and the treatment of UK pension schemes in Irish orders need particular care, and scheme-specific advice.
None of this makes Irish-UK cases unmanageable. It makes them cases in which the jurisdictional footing should be verified in writing at the first consultation, before any proceedings issue anywhere, because steps taken in the wrong order are now harder to unwind.
This article is general information, not legal advice. For the full practice area, see International and Cross-Border Divorce, or contact the practice to discuss a matter in confidence.