Swedish film star Rebecca Ferguson is impressed with the high quotient of female characters in the latest Mission: Impossible blockbuster - and that they're not there just for effect.

The sixth instalment, entitled Fallout, sees the likes of Angela Bassett, Vanessa Kirby and Michelle Monaghan join Ferguson in the action-packed movie. All play strong and pivotal characters in the film.

"They're great, but they also serve a purpose in this film," insists Ferguson, who returns to play the mysterious former MI6 agent, Ilsa Faust, who featured in the previous MI caper, Rogue Nation.

"It's not just bringing more women into the film to live up to the standard of the #MeToo movement etc, it's actually for a cause. It's for a purpose.

"If you take them out of the film, there'd be a hole in the script."

Watch our interview with Rebecca Ferguson below.

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In an interview with RTÉ Entertainment, she also spoke about her character and how she fits into a story where the lines between good and evil are often blurred by loyalty and circumstance.

"When Ilsa reappears it's constantly a question of where do we have her, and what side she's on, and what her agenda is," says Ferguson.

"In this film, I think all of the characters – and especially Tom's – is balancing on good and evil. We're kind of in the grey zone.

"And I think that makes this film kind of raw and darker, for all of the characters."

Mission: Impossible – Fallout is in cinemas nationwide.