Christopher Nolan felt "an enormous responsibility" making 'Dunkirk'.

The acclaimed movie-maker's latest effort focuses on the evacuation of Dunkirk in 1940, and Christopher has admitted to feeling a weight of responsibility while making a film about real-life events.

He shared: "There's an enormous responsibility that comes with it. And that sense of responsibility - particularly for a British person working in what's really sacred ground in British culture - when you then come to screen the film, all of that responsibility, all of that pressure comes flooding back.

"We had a screening for the veterans that I had spoken to, their families.

"Honestly, never felt quite such pressure in a professional setting as standing in front of that audience and about to, you know, show our version of what they'd actually lived through."

The new movie boasts a star-studded list of actors, such as Tom Hardy, Mark Rylance and even One Direction singer Harry Styles.

But during screenings of the movie, Christopher has been particularly keen to impress World War Two veterans.

Reflecting on the screenings for veterans, Christopher told NPR: "I came away feeling that we had concentrated on the right things and tried to be authentic in the right ways.

"I've tried to approach it as a storyteller and I've tried to be free in that, and I came away from that screening feeling that that had allowed a bigger picture to emerge that they recognised."