It's been rumoured before that Christopher Nolan's World War II movie Dunkirk would run less than two hours long, and now the BBFC has classified it in the UK and confirmed it as one of Nolan's shortest-ever films.

Dunkirk runs a swift 106 minutes long, making it Nolan's shortest offering since his debut Following – a definite change from the 150 minutes or more running times of the likes of Interstellar and The Dark Knight Rises.

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Unsurprisingly, it contains "sustained threat, intense sequences, moderate violence, strong language", but it is only rated a 12A, so don't go expecting any Saving Private Ryan gore.

Dunkirk is centred around the evacuation of British and Allied troops during World War II, and stars the likes of Fionn Whitehead, Tom Hardy and Cillian Murphy, as well as Harry Styles in his first ever film role.

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Fionn has told us that Harry gives a "great" performance in the film, which he hopes isn't taken over by the "hysteria" surrounding his casting.

"I think it's got a bit silly really. The meaning has got lost somewhere along the way and people have stopped realising there's an amazing cast – including Harry – but there's, you know, the creme de la creme of actors," he explained.

Dunkirk lands in cinemas on 21 July.

From: Digital Spy