The band was based around an anarchist commune in a 16th century cottage, Dial House, near Epping, Essex, and formed when commune founder Penny Rimbaud began jamming with Steve Ignorant (who was staying in the house at the time). Ignorant was inspired to form a band after seeing The Clash perform at Colston Hall in Bristol, whilst Rimbaud, a veteran of avant garde performance art groups such as EXIT and Ceres Confusion, was working on his book "Reality Asylum". They produced "So What?" and "Do They Owe Us A Living?" as a drum-and-vocal duo. They briefly called themselves Stormtrooper before choosing Crass in reference to a line in the David Bowie song "Ziggy Stardust" ("The kids was just crass").