She was nominated for a best supporting actress Oscar for her role in the 1969 film They Shoot Horses, Don't They? and won a Bafta for the same role.
Her son Orlando Wells told the Telegraph newspaper that she was "an absolutely fantastic mother".
"She loved nothing more than cooking a good Sunday roast and sitting around a fire of a winter's evening. In some sense, she was quite a home girl. Both Sasha [Orlando's sister] and I feel incredibly lucky to have her as a mother.''
|The Young Suzannah in the 1960's|
Directed by Sydney Pollack, They Shoot Horses, Don't They? followed the contestants in a grueling dance marathon and also starred Jane Fonda.
York was also nominated for a Golden Globe for her role as Alice.
More recently, she appeared in the BBC dramas Holby City and Casualty.