Following small roles with Frankie Howerd in the films of Up Pompeii and Up the Chastity Belt (1971) she secured a regular part in the sitcom Doctor in Charge in 1972 playing Nurse Sandra Crumpton.
[1] Winmill played the role throughout the thirteen episodes of the first series but declined to continue in the part, despite being offered a three-year contract.
This was mainly due to her fear of being typecast and wanting to do more stage work, although the actress now believes that she quit the role too early.
Over the next few years, Winmill became involved in other activities such as folk singing (she also plays guitar) and joined the Template Foundation, due to her interest in the psychic mind.
[4] In the late 1990s she made a return to acting, appearing in a one-woman show which she wrote herself and starred in a number of science-fiction audio drama CDs.