Gillian Leigh Anderson, OBE is an American actress. Her credits include the roles of FBI Special Agent Dana Scully in the series The X-Files, ill-fated socialite Lily Bart in Terence Davies's film The House of Mirth, DSU Stella Gibson in the BBC/RTÉ crime drama television series The Fall, sex therapist Jean Milburn in the Netflix comedy-drama Sex Education, and British Prime Minister Margaret Thatcher in the fourth season of Netflix drama series The Crown. From Wikipedia