Does the UK honour European Arrest Warrants now that it has left the EU?

No. Following Brexit, the UK no longer participates in the European Arrest Warrant system. Extradition with EU member states now operates under the UK-EU Trade and Cooperation Agreement, which established a new surrender arrangement. This framework is slower and includes additional safeguards, including a mandatory bar on extraditing UK nationals where the requested state would not extradite its own citizens. Requests from EU countries are now processed as Category 2 extraditions under Part 2 of the Extradition Act 2003, requiring Home Secretary certification.