Bowker was born in Shawford, Hampshire, England. On stage from childhood, she first attracted international attention as the star of The Adventures of Black Beauty, a 1972 TV series which was a "continuation" of the film. She also starred as Clare of Assisi in the movie Brother Sun, Sister Moon. Her other well-known film appearance was as Princess Andromeda in the 1981 Ray Harryhausen film, Clash of the Titans.

She is married to Harry Meacher. She is also a trained ballerina.

She is married to Harry Meacher. She is also a trained ballerina.