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The trailer has only just been released and from this brief glimpse alone viewers have been hugely impressed by Anderson's portrayal of the 'Iron Lady', with her voice in particular receiving countless plaudits.
Commenting on the trailer, one person said: "My gosh, Gillian Anderson has Thatcher's voice down to a tee! Move over Meryl Streep!"
Another added: "Gillian Anderson's Thatcher voice and the way she acts. I am going to have nightmares BUT THE TALENT RIGHT THERE GET THAT EMMY GET THAT EMMY!!!!!!"
A third said: "Gillian Anderson's voice as Thatcher is *hauntingly* accurate."
Another commented: "I 100% cannot deal with Gillian Anderson as Thatcher. I just can't. She *sounds exactly like her*."
Gillian Anderson's drastic voice change to embody Margaret Thatcher is a testament to the fact that she always brings her A game. Her theatre years are coming in handy. #TheCrown #Netflix
- Czarina V (@morallygrayy) October 29, 2020
I've never seen the crown but that thatcher voice impression is very much on point...
- RabbitInWaistcoat (@_phantoria_) October 29, 2020
#TheCrown Oh that's a trailer. And a moment to recognise the fact Gillian Anderson sounds exactly like Mrs Thatcher. Amazing.. @TheCrownNetflix pic.twitter.com/AuYGvNLP1L
- Kevin Hughes (@Popprince) October 29, 2020
Anderson joins Olivia Colman (Queen Elizabeth), Josh O'Connor (Prince Charles) and Emma Corrin (Lady Diana Spencer) in the fourth season of the Netflix hit series.
A synopsis reads: "As the 1970s are drawing to a close, Queen Elizabeth and her family find themselves preoccupied with safeguarding the line of succession by securing an appropriate bride for Prince Charles, who is still unmarried at 30.
"As the nation begins to feel the impact of divisive policies introduced by Britain's first female Prime Minister Margaret Thatcher, tensions arise between her and the Queen which only grow worse as Thatcher leads the country into the Falklands War, generating conflict within the Commonwealth.
"While Charles' romance with a young Lady Diana Spencer provides a much-needed fairytale to unite the British people, behind closed doors, the Royal family is becoming increasingly divided."
Speaking about the new series, executive producer Peter Morgan said: "It could be said that they are two very similar women, born only months apart.
"They are very much defined by the Second World War, by a sense of a sense of frugality, hard work, commitment, Christianity and so much more.
"It was a commonly held piece of wisdom that the Queen and Thatcher didn't get on. I think there was probably a lot of respect. But they also had many differences, it was really fun exploring their differences and their similarities.
"I also get a chance to explore them both as mothers. Writing Thatcher and the Queen as mothers was probably an angle that no one has explored before. It yielded one of my favourite episodes in the season."
The Crown series four will be available to stream from 15 November.
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