She was the daughter of Harry Letts and Elise Catlow (herself an actress at one time) and attended the Collegiate School for Girls, Leicester. She studied for the stage at the Royal Academy of Dramatic Art and made her first appearance on the stage with the Coventry Repertory Company in July 1935, as Sally in The Two Mrs Carrolls. In the late 1930s she appeared in several productions at the Stratford Theatre Festival.
Her television career began in 1946 with a production of Androcles and the Lion and she later appeared in Emergency-Ward 10, Skyport, Danger Man, Compact, No Hiding Place, Z Cars, Special Branch, Crown Court, Tinker Tailor Soldier Spy, Minder, The Outsider and Rumpole of the Bailey. Her films included Antony and Cleopatra, Eye of the Devil and Girl on Approval.
She married actor/writer/director Geoffrey Staines in 1936 and was the sister of Barry Letts who himself appeared in Coronation Street in October and November 1961 as Mr. Wentworth and the aunt of Crispin Letts who appeared as builder Les Smith in November and December 1989.