(Photo: Getty Images)

The historical series The Crown kicked off in 2016, detailing the reign of Queen Elizabeth II, with Claire Foy playing her in seasons one and two. In an inventive turn of events, the creators swapped in new actors for seasons three and four, with Olivia Colman taking on the role of Her Majesty.

The series is currently in season four, with Gillian Anderson (The Fall) joining as Prime Minister Margaret Thatcher.

It's difficult enough to take on an accent that isn't one's own, let alone one that is known around the world. Thatcher, who passed away in 2013, had a distinct way of speaking, which Anderson addresses in an interview with Sky Arts. It seems the actress was nervous about getting it right. Actually, to be more exact, about getting it wrong.

Anderson says in the interview, "We started on the voice very early but didn't reveal the voice until quite late. Because... even though I was working with somebody... I don't know... partly fear."

She says even during rehearsals and read-throughs, she would hold back: "When it actually came time to getting closer and closer to the doing it, it really took a kick up the rear. I think Peter (Morgan) said, 'Where is she!? When is she coming on!?' And, he was absolutely right."

Anderson goes on to say, prior to that pep talk, she wasn't quite there, she wasn't ready, and there was a lot of "overthinking." She explains, "It wasn't necessarily anxiety, but really not wanting to get it wrong."

Here's a peek at Anderson as Thatcher:

Did she get it right?