One of the most exciting additions to The Crown Season 4 is Gillian Anderson, who plays former Prime Minister Margaret Thatcher. Thatcher looms large in the annals of history, bearing the distinction of being the first woman to hold the position of Prime Minister and proceeding to become an extremely polarizing figure over the course of her 11 years in office. Thatcher’s working relationship with Queen Elizabeth II (played by Olivia Colman for a second and final season) will be one of the key focal points of Season 4, with their politely adversarial feelings seemingly coloring every encounter they …