Siobhan Mary Ann McCarthy (born 6 November 1957 in Dublin) is a television and stage actress. She is married to Andrew Bruce, and resides in London with her husband and two children, Kieran and Juliet. Her television appearances include Bad Girls, Lovejoy, and Holby City.
However, Siobhán is more famous for her stage career, which includes, Evita, Mamma Mia. She was nominated for a Laurence Olivier Theatre Award in 2000 (1999 season) for Best Actress in a Musical for her performance in Mamma Mia! at the Prince Edward Theatre.