Helena Bonham Carter reveals royal sleepover at Windsor Castle

Helena Bonham Carter has revealed she once attended a sleepover at Windsor Castle with The Queen, Daniel Craig and Rachel Weisz.

The actress - who stars as the Queen’s sister Princess Margaret in the new series of The Crown - and revealed she and her ex-partner, film director Tim Burton, had been guests of Her Majesty “about 10 years ago” and received a tour of the castle.

Bonham Carter told the Radio Times: “'It’s fun! Rachel Weisz was there with James Bond. I stayed in Prince Charles’s rooms. We had supper and the Queen and Prince Philip gave us a tour.”

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Bonham Carter - whose uncle Baron Bonham Carter actually dated Princess Margaret when he was a guard - previously played the Queen Mother in The King’s Speech and revealed the Queen gave her a special present to honour her portrayal.

She explained: “They’d found something from their archive that each of us would appreciate. So Tim had the first edition of Alice in Wonderland, I had a letter from Lionel Logue, who was the King’s speech therapist. It was really touching.”

Bonham Carter, 53, is taking over the role of Princess Margaret from Vanessa Kirby, in the latest series of the show, which beings on Sunday.

She previously revealed she tried to get in touch with the princess, who died aged 71 in 2002, via a medium before accepting a role in the Netflix series.

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Speaking at the Cheltenham Literature Festival, according to the Guardian, Bonham Carter revealed “She said, apparently, she was glad it was me... she said: ‘You’re better than the other actress’ … that they were thinking of. They will not admit who it was. It was me and somebody else.

“That made me think maybe she is here, because that is a classic Margaret thing to say. She was really good at complimenting you and putting you down at the same time.

“Then she said: ‘But you’re going to have to brush up and be more groomed and neater.’ Then she said: ‘Get the smoking right. I smoked in a very particular way. Remember that – this is a big note – the cigarette holder was as much a weapon for expression as it was for smoking.’”