EU judges made it harder for suspects to block extradition to Britain, drawing a sharp line between procedural safeguards and fundamental rights in the post-Brexit justice system.

(CN) — A trio of British businessmen tried on Thursday to dodge extradition to the United Kingdom, arguing they could be punished for conduct not even listed in their arrest warrants, but Europe’s top court said that alone won’t stop the trip back.

The men — identified in court as LQ, NT and RM — are wanted in the U.K. over claimed fraud tied to a home repair scheme targeting elderly customers. After a British court froze their assets in 2021, they were later found in contempt for failing to comply and sentenced to six months in prison. That contempt ruling, treated as a civil matter under U.K. law, was not included in the arrest warrants seeking their return on fraud charges.

They asked Irish judges to halt their handover, warning they could still be jailed for that contempt if returned, effectively expanding the case beyond the charges listed in the warrants.

Ireland’s Supreme Court paused the case and asked the Court of Justice of the European Union whether that risk is enough to block extradition.

Judges in Luxembourg said no, finding that the “rule of speciality,” the safeguard that limits punishment to the charges listed in the arrest warrant, “cannot be interpreted as establishing a ground for refusal to execute an arrest warrant.”

A few years ago, a case like this would have been a quick yes. EU countries ran on the European Arrest Warrant, a fast-track system built on near-automatic trust between courts. Brexit in 2020 changed that. The U.K. fell out of that system and into the Trade and Cooperation Agreement (TCA), a post-Brexit deal that still allows extradition but with more friction, more checks and less blind trust.

Judges drew a clear line. The speciality rule applies after someone is sent back and must be enforced by authorities in the requesting country, not by courts deciding whether to extradite.

“There is nothing in those terms to indicate that an executing judicial authority is obliged or has the power to refuse to execute an arrest warrant” on that basis, the judges said.

Courts can still step in where there is a real risk to fundamental rights, like an unfair trial or lack of legal remedies, but not simply because another safeguard might be breached later.

“The requirement to comply with the speciality rule does not constitute a fundamental right,” the court said, adding that any risk of breach “does not suffice, in itself,” to stop surrender.

The court also stressed the system is designed to work efficiently, warning that forcing judges to second-guess how another country might apply the rules in the future would slow the process down.

That stance puts some distance between the judges and an earlier opinion from Advocate General Laila Medina, who had treated the speciality rule as a more immediate safeguard and suggested courts should take a closer look before allowing extradition.

Legal observers say the judgment takes a more pragmatic turn.

Steve Peers, a professor of EU and human rights law at Royal Holloway, University of London, said the ruling “seems anxious to facilitate the application of the Brexit deal extradition rules,” making it harder to challenge transfers to the U.K. on speciality grounds.

Professor Thomas O’Malley, a senior lecturer in law at the University of Galway and practicing senior counsel specializing in criminal law, said the decision cuts both ways. It confirms courts must block extradition where fundamental rights are genuinely at risk, but also makes clear that speciality is not one of those rights.

“It means that from now on, arguments against surrender based on the speciality rule are less likely to succeed,” he said.

Ireland’s Justice Department said it is reviewing the ruling but declined to comment further. Lawyers for the applicants also did not weigh in, citing professional rules that bar barristers from speaking on ongoing cases.

The case now returns to Ireland’s Supreme Court to apply the ruling. The interpretation from Luxembourg is binding and cannot be appealed, leaving little room to revisit the speciality argument as a basis to block extradition.

Courthouse News reporter Eunseo Hong is based in the Netherlands.

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