The European Arrest Warrant (EAW) is the most well known example of mutual recognition in criminal matters.
EAW has replaced individual extradition procedures between EU Member States and permits faster and simpler surrender procedures in extradition cases.
In the UK, European Arrest Warrant extradition requests made on or after 1 January 2004 are dealt with under the Extradition Act 2003. The Extradition Procedures in Scotland section has more information on EAW and extradition, while the European Commission's Freedom, Security and Justice website.