In 1975, Barrie played Mrs. B. J. Spence in the Walt Disney film One of Our Dinosaurs Is Missing. After roles in a string of one-off television plays and series, she appeared in a guest role as a ballet mistress in the popular BBC comedy series Are You Being Served? in 1979. She worked for many years as a chorus girl in the West End until her first break as an actress came along. At sixteen she danced at the Windsor Club with Danny La Rue and Barbara Windsor, changing her name before making her West End debut in 1961's 'Babes in the Wood'. Throughout the 1960s Amanda worked on many stage productions including Cabaret, Private Lives, Hobson's Choice and Aladdin, and continued to perform on stage until the mid-1980s. She is well known as Alma Sedgewick (later Baldwin), in Coronation Street. She was a bit-player in the early to mid-1980s before she was offered a contract in 1988, after which she became a very well known character. She continued in the role until her retirement in 2001. In the story, Alma was diagnosed with cervical cancer which later caused her death.