Chaos UK is an English punk rock band formed in 1979 in Portishead, near Bristol.

They emerged as part of the anarcho-punk scene, developing a fast and aggressive hardcore punk style.

[2] In the process, they, along with fellow Bristolians Disorder and Stoke's Discharge, revolutionized the hardcore punk scene.

[citation needed] The original line-up consisted of Simon Greenham (vocals), Andy Farrier (guitar) and Adrian Rice (bass, aka Lice and later Chaos/Kaos) finally joined by Richard Potts (drums, aka Potts).

He was joined by Mower on vocals, Gabba on guitar (previously with Nottingham's The Seats of Piss), and Chuck on drums.