Родилась в Dartmouth, Англия, Великобритания. Rachel Kempson, Lynn's mother, debuted at Stratford in 1932, famously as Juliet in Bridges Adams' production of Romeo and Juliet. In 1935 she was asked by William Armstrong to star in the Liverpool Repertory production of Flowers of the Forest. Her leading man was Michael Redgrave. Within a few weeks they fell in love and they married on 18 July 1935. She has appeared in more than 15 films over the past six decades, including OUT OF AFRICA (1985), THE CHARGE OF THE LIGHT BRIGADE (1968, with daughter Vanessa), TOM JONES (1963, with Lynn), and THE CAPTIVE HEART (1946, co-starring with her husband Michael Redgrave). More recently, she can be seen in DEJA VU (1998, with Vanessa) directed by Henry Jaglom. Her television appearances include UNCLE VANYA (1991), THE BLACK TOWER (1985), THE JEWEL IN THE CROWN (1984), and JANE EYRE (1970).