For years, British clients would ask me some version of the same question: "But we're leaving the EU, so this warrant thing goes away, right?" It didn't go away. It changed shape, and in some respects it got more complicated, not less.
Until the end of the Brexit transition period on 31 December 2020, the UK operated fully inside the EAW system — a warrant from Madrid worked against someone in Manchester the same way it worked against someone in Munich. That ended when the transition period closed. The UK is no longer a member state, and the Framework Decision no longer applies to it. What replaced it is a bespoke surrender arrangement built into the EU-UK Trade and Cooperation Agreement, sometimes referred to by its section heading dealing with law enforcement and judicial cooperation. It looks similar to the EAW on the surface — same basic idea of a fast-track warrant-based surrender system between the UK and EU states — but the details diverge in ways that matter a great deal if you're the person facing one.
The most significant practical change is the reintroduction of a nationality-based refusal ground. Under the pure EAW system, member states largely couldn't refuse to surrender their own nationals just because of citizenship. Under the TCA arrangement, several EU states can once again decline to surrender their own nationals to the UK, and the UK can decline to surrender British nationals to EU states, subject to each state's own domestic rules on the point — Germany, for instance, has constitutional constraints here that predate and postdate the whole EAW era. That single change alone has reshaped strategy in a meaningful number of cases involving dual nationals or people with strong ties to an EU member state.
Proportionality also got a more explicit, formal footing in the TCA text than it ever had under the Framework Decision, where it existed more through guidance and national practice than hard treaty language. And a political offense exception, largely absent from the pure EAW system, made a partial reappearance in the UK-EU arrangement — narrower than in old-style extradition treaties, but present in a way it simply wasn't for EU-internal cases.
Dual criminality gets treated a bit differently too. The old EAW list of 32 offense categories where dual criminality is automatically waived still functions in a broadly similar way under the TCA, but because the UK sits outside the EU's legal order now, some of the automatic, high-trust shortcuts that came from shared EU membership and CJEU oversight no longer apply in quite the same form, and issuing authorities on both sides have had to adjust their practice accordingly.
Timelines have generally lengthened, if only modestly and unevenly. Losing the direct EAW mechanism means losing some of the standardized, EU-wide procedural shortcuts that kept cases moving quickly, and the loss of CJEU oversight over how the new arrangement gets interpreted means less centralized, uniform case law to draw on when disputes arise — courts in different countries are working out some of these questions independently rather than under one shared appellate umbrella, at least for now.
The upshot for anyone facing one of these cases post-Brexit: don't assume old EAW case law and old EAW timelines map cleanly onto a UK-EU surrender request today. They're cousins, not identical twins, and the differences — nationality, proportionality's formal status, the political offense exception — are exactly the kind of details that decide real cases.
This article is provided for general informational purposes only and does not constitute legal advice. Extradition, INTERPOL, and international criminal matters are highly fact-specific. Readers facing an actual or anticipated matter should seek advice from qualified counsel before making decisions.