Thatcher on Acid were an English anarcho-punk band. They formed in Somerset during 1983. Their name is a satirical reference to former UK prime minister Margaret Thatcher. Ben Corrigan, Bob Butler and Andy Tuck also played in Schwartzeneggar with ex-Crass member, Steve Ignorant. The band opened the anarcho-punk band Conflict's "Gathering of the 5000" show at Brixton Academy, an event which resulted in many arrests and achieved a degree of infamy.