Moving back to London, Dore worked in fringe theatre, then joined Thames TV's long-running series Rainbow for 18 months, writing and performing songs with Julian Littman, whom she had met at drama school, and Karl Johnson, an actor-musician from the Tyneside Theatre Company before being replaced by the more familiar ensemble of Rod Burton, Matthew Corbett and Jane Tucker which evolved into Rod, Jane and Freddy.
Moving back to London, Dore started her career in fringe theatre. She then joined Thames TV's long-running series Rainbow for 18 months, working with Julian Littman and Karl Johnson, who she met at drama school, alongside a more familiar ensemble of Rod Burton, Matthew Corbett, and Jane Tucker, which later became known as Rod, Jane, and Freddy.