Aunt of Crispian Mills.
Daughter of playwright Mary Hayley Bell and Sir John Mills.
First movie role was playing an infant in In Which We Serve (1942), released in 1942. This film was written by, and starred, her godfather, Sir Noel Coward.
Goddaughter of Vivien Leigh
Godfather was Sir Noel Coward.
Her son-in-law is aspiring actor David Tuchman.
In 1971, she accepted the Oscar for "Best Actress in a Leading Role" on behalf of Glenda Jackson, who wasn't present at the awards ceremony.
Mother of Sean and Melissa Caulfield
Niece of Annette Mills.
Sister of Hayley Mills and Jonathan Mills.
There is an eighteen year age difference between Mills and her husband Maxwell Caulfield, who was born in 1959.
Was nominated for Broadway's 1960 Tony Award as Best Supporting or Featured Actress (Dramatic) for "Five Finger Exercise."