Shortly following the release of her debut studio album, One House Left Standing (1972), Hamill went on her first UK tour, supporting John Martyn.
In the early 1980s she worked with Wishbone Ash, appearing as a guest performer on their studio albums Just Testing (1980) and Number the Brave (1981) and joining the group for their 1981–82 tour.
Four tracks ("Glastonbury (Jerusalem)", "Tides", "Spring: Awaken Lark Rise" and "Stars") were issued as the Domesday EP on Coda Records, a label featuring many new-age artists and run by her then-husband Nick Austin.
Both this and the Voices album were used extensively by Channel 4 for a series of music videos collectively titled The Art of Landscape and shown every morning in the early 1990s.
In 1992, Hamill went to live in Hastings, found a new partner[clarification needed] in Andrew Warren, and later cut a new studio album called Summer at the end of the decade.
Her song "You Take My Breath Away" from The Lost & the Lovers was previously covered by Tuck & Patti on 1988's Tears of Joy and that version caught the attention of American singer Eva Cassidy, whose recording of the track reached number 54 on the UK Singles Chart in October 2003.