Helmore's father worked for many years at the Lloyds of London insurance corporation. She has been photographed by photographer Robert Mapplethorpe, and has been a London socialite for years, attending parties and fashion shows. "She was making an impact on the fashion world too, beyond her modelling assignments. Designers such as Christian Lacroix, Manolo Blahnik and Philip Treacy have cited her as an influence on their work."
She posed as the cover model for Roxy Music's last album Avalon, wearing the helmet. Only 22 and with Ferry 14 years her senior, they married on 26 June 1982, at the Church of St. Anthony and St. George at Duncton, West Sussex. They moved to Sussex and led a gentrified/countryside life style. The couple have four sons: Otis, Isaac, Tara and Merlin.
The Ferrys divorced on 31 March 2003; Helmore was reportedly paid £10 million in the settlement.