Watching Dunkirk in Dunkirk

Christopher Nolan's film Dunkirk has been a box office hit around the world, including in France.

It portrays the evacuation of more than 300,000 British, French and Belgian troops from the beaches and harbour of Dunkirk, in the north of France, in 1940.

Hugh Sykes went to Dunkirk to find out how the film had been received there.