Born in York and growing up in Yorkshire, Dawson fully expected to continue the farming tradition of her family, and indeed singing was not her first career; she first worked in industry as a translator. However, later she studied at both the Guildhall School of Music and Britten–Pears School in Suffolk, where her teachers included Rae Woodland, Gerald Moore and Peter Pears. Her time as a music student, however, was limited as she soon obtained enough professional work to embark upon a career and made her operatic debut in 1986 as the Countess in "Le Nozze di Figaro" (Kent Opera). Dawson's position as one of England's most versatile and popular sopranos was confirmed by her performance as a soloist in "Libera me" from Verdi's Requiem with the BBC Singers at the Funeral of Diana, Princess of Wales in September 1997. She still continues a busy musical schedule, is head of vocal and opera studies at the Royal Northern College of Music (RNCM) as well as the University of York and is a Professor of Leeds College of Music.