"The Guns of Brixton" was a mainstay in the band's set and when played live Simonon used to switch instruments with Joe Strummer (Simonon on rhythm guitar and Strummer on bass) because he was unable to play the bassline whilst singing lead vocals at the same time.
A somewhat heavier, faster version than the one found on London Calling appeared on the live compilation From Here to Eternity: Live, released in 1999.