This eventually led to the formation of the band This Heat where Williams proved to be an excellent lyricist and musician and a maniacal but intuitive performer on bass guitar and keyboards.
During the early days improvisation dominated their performances, but gradually they encompassed both abstract and formal stylings in their music, where trance-like soundscapes merged into violent yet danceable anthems with cascades of noise punctuated by abrupt silence.
This Heat's performance proved an intoxicating hybrid of music played exceptionally noisily, usually in complete darkness, with a proto-punk attitude.
It was never intended as a "demo tape for The Heat"[clarification needed] as a subsequent bootleg CD quoted, bringing much distress to Williams.
Williams went on to be a promoter, and as a DJ and he recorded zealously at home with the singer Viv Corringham and also with This Heat's original sound engineer Martin Harrison.
Many musicians worldwide recognize This Heat as an influence to their music, including The The's Matt Johnson and Steve Parry of Hwyl Nofio.