White's major break came playing the part of Eileen in the musical On the Level at the Saville Theatre. She was taken out of the chorus and the song "Bleep – Bleep" was written especially for her as a solo feature.[2] This led to her being cast as Bet, Nancy's best friend in the film version of Lionel Bart's musical Oliver! (1968).[6] She accompanied Shani Wallis as Nancy and Mark Lester as Oliver in the songs "It's a Fine Life" and "I'd Do Anything".[2]
Following her appearance in Oliver!, she briefly settled in France recording pop songs, performing in cabaret and making television appearances. She also starred in the French film Papa the Little Boats (Papa les p'tits bateaux [fr], 1971)[2] directed by Nelly Kaplan.[7]
Her many other television credits include the TV musicalPickwick for the BBC in 1969, Keren Daniel in Poldark for BBC TV, Annie Miller in The Brotherhood – Pre-Raphaelites – Aka Love School for the BBC directed by Piers Haggard. Dixie, the female lead in the comedy series Don't Rock the Boat for Thames Television directed by Mark Stuart, Moyra Sheffield in Framed for ITV, written by Lynda La Plante, Sharon Nightingale in the series 1 episode Monday Night Fever of Minder, Mildred in ITV Saturday Night Theatre – The Funeral of Queen Victoria, directed by Tania Leven, Whizzkid's Guide a children's comedy series for Anglia Television, and Faith in the series Gone To Seed.[10] Musical appearances on television included the variety series The Songwriters, several Royal Variety shows, and The Good Old Days with Leonard Sachs.[11][12] She made her final TV appearance in an episode of the comedy series A Many Splintered Thing (2000) with Alan Davies.[3]
Between 1967 and 1970 White was in a relationship with Alan Whitehead, the drummer of chart-topping group Marmalade. Although engaged for two years they never married.
Between 1973 and 1980 relationship with Francisco Martinez Montes, the Argentinian military, writer and director. The couple had three children.
White became semi-retired after her marriage to (then) theatre producer Richard M. Mills in 1983. The couple had two sons.[2]
Following a long illness, she died of heart failure on 7 September 2018 at age 69.[2]