Bromley initially worked in the
herbarium at Kew Gardens from 1975 on the Kew Record of Taxonomic Literature and then as a taxonomist, promoted in 1984 to Higher Scientific Officer, when she took part in an expedition to Brazil. In 1985 she moved to work in the gardens as a Guide Lecturer, in 1994 becoming Head of Community Engagement and Volunteering, where she set up the adult education programme and established the volunteer programme. In 2013 Bromley left Kew after 38 years, setting up her own company, Planting Values, freelancing in heritage education. She later worked for
Botanic Gardens Conservation International as Biodiversity Education Officer on the BigPicnic project sponsored by
Horizon 2020 and LearntoEngage project for the
EU. ==Personal life and death==