Sarah Miles is an English theatre and film actress. She first attended Roedean but at the age of 15 she enrolled at RADA, the Royal Academy of Dramatic Art.

Shortly after her completion at the Royal Academy of Dramatic Art, Miles debuted in 1962 as Shirley Taylor in Term of Trial (1962), co-staring with Sir Laurence Olivier. The following year, Miles became a well-reputed actress of British New Wave with her roles in Joseph Losey's The Servant (1963) and in Michelangelo Antonioni's Blowup (1966).

After acting in a variety of plays from 1966-1969, Miles was cast as Rosy Ryan, the daughter of Tom Ryan in David Lean's 1970 film, Ryan's Daughter. Her performance earned a nomination for the Academy Award for Best Actress.

Although she has denied it, Miles is known for her frequent use of profanity. A November 1971 Cosmopolitan profile was subtitled "She uses words that would make a construction worker blush, but from her they sound refined" while a Women's Wear profile was titled "The Lady with the Truckdriver's Mouth".

Sarah Miles is also widely known for drinking her own urine. Citing famous practitioners of urine therapy. such as Gandhi and Nero, she has for thirty years been indulging herself in this tradition to keep herself healthy and vigorous.

In 1973, while filming The Man Who Loved Cat Dancing, her manager and associate David Whiting died under mysterious circumstances. During the filming of The Man Who Loved Cat Dancing, Miles was reported to be having an affair with Burt Reynolds.

After 1973, Miles has gone through semi-retirement in bursts of several years, only to come out of said retirement to appear in a film or a TV program.

Sarah Miles was married twice to the British playwright Robert Bolt, (1967 - 1975) and (1988-1995). He wrote and directed the film Lady Caroline Lamb, in which Miles played the heroine, Lady Caroline Lamb.

Her brother is director, producer and screenwriter Christopher Miles.

Sarah Miles had made a claim to be of Royal Blood through the lineage of her maternal grandfather, Francis Remnant. If the lineage is true, this would make Miles the great-granddaugher of Prince Francis of Teck, the brother of Mary of Teck, the Queen Consort of George V. This would make Miles a distant cousin of Elizabeth II of Great Britain.