Their Finest

Their Finest is a 2016 British war comedy-drama film, directed by Lone Scherfig, written by Gaby Chiappe, and based on the 2009 novel Their Finest Hour and a Half by Lissa Evans. The film stars Gemma Arterton, Sam Claflin, Bill Nighy, Jack Huston, Jake Lacy, Richard E. Grant, Henry Goodman, Rachael Stirling, Eddie Marsan, Amanda Root, Helen McCrory, and Claudia Jessie. It tells the story of a British Ministry of Information film team making a morale-boosting film about the Dunkirk evacuation during the Battle of Britain and the London Blitz.

Synopsis from Wikipedia, CC BY-SA 4.0. Everything below written here.

Poster © the film's rights holders.