Delta 5

Delta 5 was an English post-punk band from Leeds, West Yorkshire, England.
Career.
The band was formed from the same Leeds University art school scene as Gang of Four and The Mekons. The original members of Delta 5, Julz Sale (vocals/guitar), Ros Allen (bass) and Bethan Peters (bass), formed the band "on a lark", but soon became a part of the thriving Leeds post-punk scene, and later added Kelvin Knight on drums and Alan Riggs on guitar. Combining feminist politics with a two-bass funk-punk sound (much in the style of another, more famous Leeds band, Gang of Four), they released their debut single in 1979, "Mind Your Own Business". This song was later covered by Chicks on Speed, Le Shok, R. Stevie Moore, Pigface and Dum Dum Girls. Bethan Peters went on to play on Fun Boy Three's second album, "Waiting". 
The members of Delta 5 were also important figures in the Rock Against Racism movement, and were the subject of a highly publicized assault at the hands of a right-wing group affiliated with rival movement Rock Against Communism.
After the release of second single "You", the band went on a successful tour of the US, and soon thereafter left Rough Trade for Charisma Records imprint Pre. They recorded their debut album, "See the Whirl", which suffered from overly clean production, and received low marks both critically and commercially. Due to the failure of the album, the group disbanded. A cover of "You" (with Japanese lyrics, and renamed "Saboten" (Cactus)) was recorded by Shonen Knife and released on the band's 1982 debut "Minna Tanoshiku".
In 2006, Kill Rock Stars released a compilation of early Delta 5 material called "Singles & Sessions 1979-1981", capitalizing on the re-emerging popularity of post-punk bands such as Gang of Four and Wire. The set included unreleased material, along with BBC radio sessions and live cuts.
Their former drummer, Kelvin Knight, died on 2 December 2015 from liver and kidney failure, at the age of 56.
"Mind Your Own Business" was featured in episode 5 of the Netflix series "Sex Education" in January 2019, and an episode of the BBC TV series The A Word in May 2020. 