Amanda AbbingtonEnglish actress Amanda Abbington is best known for playing Miss Mardle in Mr. Selfridge and Mary Morstan in the BBC adaptation of Sherlock. Amanda appeared in the TV series The Bill until 2007 as various characters. During that time she also appearedin the TV series Wycliffe, Casualty, Dream Team, The Sins, Shades, Doc Martin, Coupling and Teachers. On stage, Amanda has played the roles of Annette in God of Carnage at the Theatre Royal, Bath and Anne in Florian Zeller's play The Son. Read More Read Less