The nucleus of The Sweet came together in 1966, when drummer Michael Thomas Tucker (b. 17 July 1947, Harlesden, London, England) and vocalist Brian Francis Connolly (b. 5 October 1945, Hamilton, Scotland) played together in Wainwright's Gentlemen, a small-time club circuit band whose repertoire comprised a mixture of Motown, R&B and psychedelia. The pair broke away to form Sweetshop, later shortened to just Sweet, with Steve Norman Priest (b. 23 February 1950, Hayes, Middlesex) on bass and Frank Torpey on guitar. After releasing four unsuccessful singles on Fontana and EMI, Torpey was replaced by first Mick Stewart, and then Mick by Andrew David Scott (b. 30 June 1949, Wrexham, Wales) and the new line-up signed to RCA. The band were introduced to the writing partnership of Chinn and Chapman, who were to provide the band with a string of hit singles. Their initial success was down to bubblegum pop anthems such as Funny Funny, Co-Co, Poppa Joe and Little Willy. However, the band were writing their own hard-rock numbers on the b-sides of these hits. This resulted in Chinn/Chapman coming up with heavier pop-rock numbers, most notably the powerful Blockbuster, which reached number 1 in the UK at the beginning of 1973. The group's determinedly effete, glam-rock image was reinforced by a succession of Top 10 hits, including Hell Raiser, Ballroom Blitz, Teenage Rampage and The Six Teens.

The Sweet decided to take greater control of their own destiny in 1974 and recorded the album Sweet Fanny Adams without the assistance of Chinn and Chapman. The album charted at number 27, but disappeared again after just two weeks. The work marked a significant departure from their commercially-minded singles on which they had built their reputation. Set Me Free, Restless and Sweet F.A. epitomized their no-frills hard-rock style. Desolation Boulevard included the self-penned Fox On The Run which was to hit number 2 in the UK singles chart. This gave the band confidence and renewed RCA's faith in the band as a commercial proposition. However, as The Sweet became more of an albums band, the hit singles began to dry up, with 1978's Love Is Like Oxygen being their last Top 10 hit. Following a move to Polydor, they cut four albums with each release making less impact than its predecessor. Their brand of melodic rock, infused with infectious hooks and brutal riffs, now failed to satisfy both the teenybopper and the more mature rock fan.

Since 1982, various incarnations of the band have appeared from time to time, with up to two of the original members in any one line-up. In 1992 with the incredible success of the film Wayne's World and the subsequent renewed interest in the Sweet, due to the track Ballroom Blitz being used in the film, two versions of the band - Andy Scott's Sweet & Brian Connolly's Sweet - began regularly touring and gigging. In 1997, Brian Connolly died in hospital from a muscular disorder. Andy Scott continues to tour with his version of The Sweet.