Blunt's first significant role was as Catriona Macroon in the film "Whisky Galore!" and she played the same role in the 1958 follow-up "Rockets Galore". Blunt also appeared as Mrs. Bulstrode in the "Wilt" (film), a 1989 adaptation of Tom Sharpe's novel. She became best known for her roles in British sitcoms, appearing over the years in "Happy Ever After", "Shine on Harvey Moon", "Roll Over Beethoven (TV series)", "One Foot in the Grave", "Drop the Dead Donkey" "The Fast Show", "Harry Enfield's Television Programme" and "" and "The Thin Blue Line".