This Practice Note considers the statutory and procedural bars to extradition under section 12 of the Extradition Act 2003 (EA 2003) (rule against double jeopardy), EA 2003, s 12A (absence of a prosecution decision), EA 2003, s 13 (extraneous considerations), EA 2003, s 14 (passage of time), EA 2003, s 15 (age), EA 2003, s 17 (specialty), EA 2003, s 18 (earlier extradition to the UK), EA 2003, s 19B (forum), EA 2003, s 20 (conviction in absence), EA 2003, s 21A (proportionality), EA 2003, s 25 (physical and mental condition), EA 2003, s 94 (death penalty) and where a requested person’s extradition would be barred based on immigration status, human rights and abuse of process.