Jones-Davies worked in London for several years. She appeared in the original London production of Jesus Christ Superstar. Other credits include Life of Brian, Radio On, Rock Follies, French and Saunders, Victoria Wood As Seen On TV and Brideshead Revisited. Her role in 'Rock Follies' earned her a chart hit single with "OK" in partnership with Julie Covington, Rula Lenska and Charlotte Cornwell, reaching no.10 in June 1977. In August 1976, Jones-Davies was shortlisted for the part of Leela in the long running BBC series Doctor Who, but lost out to Louise Jameson for the role.