Elizabeth Larner (born 1931) is a british actress and a singer with a powerful soprano voice. While her main career was the musical theatre, appearing both in london's west end and on broadway, she was a seemingly unlikely, but inspired, choice to play ammonia in the bbc situation comedy up pompeii! - A role she made her own. She later appeared in the two ronnies, supporting ronnie barker as "piggy malone" and ronnie corbett as "charley farley" in the 1981-2 comic detective mystery serial band of slaves.