Bonham Carter – who portrays Princess Margaret in series three and four of the historical drama – spoke about the controversy during an appearance on the official podcast for The Crown.
The 54-year-old went on to commend the show’s creator Peter Morgan for his extensive research, which she called “amazing”.
Despite receiving positive reviews, the fourth season of the hugely popular Netflix series has also attracted criticism for its historical inaccuracies.
Bonham Carter’s comments follow only days after culture secretary Oliver Dowden said that he intends to write to Netflix to request that a “health warning” be added to the beginning of each episode of The Crown to warn viewers that the show is “fiction”.