Question: Which English actor or actress starred in the British musical "Pieces of Eight", and was one of the main ensemble in 26 of the 31 "Carry On" films?
Sentence (from "Pieces of Eight (1959 revue)"): Pieces of Eight was a British musical comedy revue with sketches written by Peter Cook, music by Laurie Johnson and starring Kenneth Williams and Fenella Fielding.
Relevant evidence: Yes