Their Finest is a 2016 British war comedy-drama film directed by Lone Scherfig and written by Gaby Chiappe, 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, Helen McCrory, and Claudia Jessie. The film 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.
Principal photography began early-September 2015 in London. It was screened at the 2016 Toronto International Film Festival. It was released in the United Kingdom on 21 April 2017, by Lionsgate.