Plummer-Andrews began her career as a theatrical agent whose clients included
Richard Burton and
Elizabeth Taylor. She moved to television during the 1970s, working on the show
Elephant Boy with James Gatwood. As part of her duties, she learned how to combine a British-written script with location shooting in Singapore and Sri Lanka and
post-production in Australia. This led to work for
TVNZ and
ABC Australia. In 1981, she began work at
TVS, the
ITV franchise holder for Southern England, during which time she increased her focus on children's programming. This led to her moving to the BBC to become an executive producer for
Children's BBC (CBBC) in 1986. As part of her work with the BBC, she helped form BBC Children's International to secure additional funding for children's programming. As co-executive producer of
Animals of Farthing Wood, she had to negotiate with 18 broadcasters in 16 countries. In 2015, she served as script editor for the show
Adventures in Duckport. ==Legacy==