According to Comicbook.com, 'X-files' star Gillian Anderson will play former British Prime Minister Margaret Thatcher is season 4 of hit Netflix series 'The Crown.' The fourth season of the show is expected to take place sometime in the 1970s. Thatcher herself served as Britain’s first female Prime Minister from 1979 to 1990. Season 3 of 'The Crown,' which features an entirely new cast of actors, will be released on Netflix sometime later in 2019.