Blunt began her theatrical career in regional rep in the early 1940s touring Europe with the Entertainments National Service Association in 1945.

In March 1945 she appeared in the stage version of "Pink String and Sealing Wax" by Roland Pertwee at the Grand Theatre, Derby.

[4] 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, Drop the Dead Donkey, The Fast Show, Pat & Margaret, Harry Enfield's Television Programme and Paul Merton: The Series and The Thin Blue Line.

When she was nearly 80, in 1998, Blunt toured the UK and Europe in Out of Joint's premiere of Caryl Churchill's Blue Heart and she travelled to New York the following year to perform in it.

[10] She died at the age of 95 of natural causes in the actors' retirement home Denville Hall in London, England, on 10 June 2014.