Margaret was a successful theatrical actress, and after working in the film industry, turned her career to the theater. She worked for many great producers, such as Bill Kenwright, and Cameron Mackintosh, dividing her time between regional productions and West End shows. She returned often to pantomime, a regular at Windor's Theater Royal. She established herself as a Shakespearean actress, a comic actress and had a strong musical talent; in her later years singing in choirs through Europe.