Prunella Scales
From Tolkien Gateway
Prunella Margaret Rumney Illingworth, CBE (born June 22, 1932) is an English actress, best known for the role of Sybil Fawlty in Fawlty Towers, and she also served as storyteller for Jackanory. In 1956, she played Ioreth in The Lord of the Rings (1955 radio series).