<P> Dame Harriet Mary Walter , DBE ( born 24 September 1950 ) is an English stage and screen actress . Her film appearances include Sense and Sensibility ( 1995 ) , The Governess ( 1998 ) , Villa des Roses ( 2002 ) , Atonement ( 2007 ) and Man Up ( 2015 ) . On television she starred as Natalie Chandler in the ITV drama series Law & Order : UK ( 2009 -- 14 ) , as Lady Prudence Shackleton in four episodes of Downton Abbey ( 2013 -- 15 ) , and as Clementine Churchill in The Crown ( 2016 ) . She was appointed Dame Commander of the Order of the British Empire ( DBE ) in 2011 for services to drama . </P>
<P> Dame Harriet Mary Walter , DBE ( born 24 September 1950 ) is an English stage and screen actress . Her film appearances include Sense and Sensibility ( 1995 ) , The Governess ( 1998 ) , Villa des Roses ( 2002 ) , Atonement ( 2007 ) and Man Up ( 2015 ) . On television she starred as Natalie Chandler in the ITV drama series Law & Order : UK ( 2009 -- 14 ) , as Lady Prudence Shackleton in four episodes of Downton Abbey ( 2013 -- 15 ) , and as Clementine Churchill in The Crown ( 2016 ) . She was appointed Dame Commander of the Order of the British Empire ( DBE ) in 2011 for services to drama . </P>
who played churchill 's wife in the crown
who played churchill 's wife in the crown
Dame Harriet Mary Walter
Dame Harriet Mary Walter