[2] During her career, she starred with Peter Sellers, Morecambe and Wise, Frankie Howerd, Diana Dors, Donald Sinden, Anna Neagle, Marcia Ashton and many others.
[3][4] In 1950, Harvey performed at the Theatre Royal, Drury Lane, as the June Girl in the British production of the Rodgers and Hammerstein musical, Carousel.
[5][6] In 1958, Harvey's breakthrough to make a big career appeared to be imminent when she starred as Mrs Alma Exegis Diddle with Peter Sellers as The Sultan in George Tabori's play Brouhaha at the Aldwych Theatre.
Her debut was such a success that following her role she began to receive invitations to appear in concerts and cabaret on stage, especially singing Andrew Lloyd Webber's song "Don't Cry for Me Argentina".
In 1966, Harvey shocked her family and friends when she left Waring and moved to Menorca to begin a relationship with property dealer John Bradwell, whom she married the following year.