After repertory work in the theatre, Hayman made her film début in ''
The Belles of St Trinian's (1954) in an uncredited role as a sixth former. The Telegraph obituary writer recalled Hayman, "with her toothy, jolly-hockey-sticks, quintessentially English persona", sometimes being compared to the female star of that film, Joyce Grenfell. In a touring production of The Importance of Being Earnest'' she played a parlour maid and was the understudy for
Margaret Rutherford, who was cast as Lady Bracknell. The two women became very close and Hayman supported Rutherford in her last years. Predominantly appearing in comedy, Hayman became the
foil for many famous comedians including
Sid James,
Tommy Cooper,
Dick Emery,
Les Dawson, and
Morecambe and Wise.
Doctor Who, the Television Companion described her character as, "very memorable," and praised Hayman as being "perfectly cast in the role, her engaging performance adding much to the story". as well as appearing in
The Liver Birds (1971) and in the 1986
Duty Free Christmas special. Hayman also appeared in many films including
Bitter Harvest (1963),
Smokescreen (1964),
Bunny Lake Is Missing (1965),
Mutiny on the Buses (1972),
Love Thy Neighbour (1973),
Man About the House (1974),
Confessions of a Driving Instructor (1976) and
The Pink Panther Strikes Again (1976). She also reprised her role of Miss Hawthorne in the six-part straight-to-DVD drama ''
White Witch of Devil's End'' (2017) which began production in 2012. ==Death==