Peacock is best known as having been one half of the English musical duo Chas & Dave from 1974 until the death of Chas Hodges in 2018 Earlier in his career in the 1960s, Peacock was in a group called the Rolling Stones (formed in 1960 before the more famous band of the same name),[1][2] as well as The Tumbleweeds, he also worked with Mick Greenwood and Jerry Donahue.

[4][5] Later in the late 1960s they became part of a group called Black Claw together with Harvey Hinsley and Mick Burt; they recorded tracks with Albert Lee.

In their early years, they recorded as Oily Rags (cockney rhyming slang for cigarettes - "fags") with Gerry Hogan and Ian Wallace, releasing a self-titled album in 1974.

[12] One of the early songs Peacock and Hodges wrote together, "Gertcha", would become a hit in 1979 after it was used in a television advert for Courage bitter.

[13] In 2009, following the death of his wife Sue (Susan Heath; born 1946 in Croydon, married in Greenwich in 1973) Peacock announced his retirement from performing with Chas & Dave.