In theatre, Fergusson's show She Knows You Know!, in which she portrayed the Comedian Hylda Baker, performed at the Vaudeville Theatre, was nominated for a 1998 Laurence Olivier Theatre Award for Best Entertainment of the 1997 season. and she was part of the cast of the touring play Seven Deadly Sins Four Deadly Sinners. In 2010 she took on the role of Dorothy Hoyle in Coronation Street, having previously played Gary Mallet's mother in 1999 and Dr Lowther's sister-in-law Helen Ashcroft in 1987. She reappeared in 2011, and was part of a large kidnapping storyline involving her husband Alan, John Stape and Chesney Battersby-Brown.
