Original planned release date for this single was on the 1st of april 2005. Later they announced at the official Prodigy website that there was a delay with the release. Finally it was confirmed that the limited edition 12" will be in the shops on 4 April 2005, and download online from 5th April 2005. The backing vocals on "Spitfire" are performed by actress and singer Juliette Lewis. The song has been included in The Sopranos, House Of Wax and The Unborn soundtracks. It is also used as the intro song at all of the National Hockey League's Calgary Flames home games.