Amanda Abbington is an English actress. In a career spanning over thirty years on stage and screen, her most prominent roles include Josie Mardle in Mr Selfridge (2013–2016) and Mary Morstan in Sherlock (2014–2017).

Mr Selfridge is a British period drama television series about Harry Gordon Selfridge and his department store, Selfridge & Co, in London, set from 1908 to 1928. It was co-produced by ITV Studios and Masterpiece/WGBH for broadcast on ITV. The series began broadcasting on ITV on 6 January 2013 and 30 March 2016 on PBS in the United States.