Chaos UK are a UK hardcore punk band formed in 1979 near Bristol. Consisting of Simon on vocals, Andy and Gabba on guitars, Kaos on bass, and Potts on drums (although the band has been through many different line-ups over the years with Kaos and Gabba as the only consistent members). Their lyrics deal with topics such as unemployment, economic recession, drinking, infanticide, distrust of government, the police, and authority in general.

In their 20-year career Chaos UK toured the world (including a Japanese tour which produced the Live in Japan album) played with bands such as Napalm Death, Extreme Noise Terror, Oi Polloi, The Exploited, Swingin' Utters, Misery, and many others. They also released over 20 LPs, EPs, singles, splits, and live albums.

They split up in 2007, the members moving on to other projects, like A.D. Rice and the Wazzucks, FuK and Sick on the Bus