Due for UK release on the 21st April 2017, 'Their Finest' is set in 1940's Britain and tells the story of film makers trying to make a patriotic film about Dunkirk, to boost British morale during the Blitz.
Starring Gemma Arterton, Bill Nighy and Sam Claflin, the film was shot at several locations across Pembrokeshire including Porthgain Harbour
The Cresselly Arms at Cresswell Quay and Freshwater West which doubles as Dunkirk.
It's not the first time that Pembrokeshire has been used as a location for films. Freshwater West appears in 'Their Finest' as Dunkirk and was also chosen for films such as Harry Potter and Robin Hood with Russell Crowe saying "I love Pembrokeshire, it's fantastic!"
Sam Claflin made his return to the county only weeks after filming Jojo Moyes You before Me in Pembroke and Pembroke Castle.
Discover more of Pembrokeshire's film locations with our guide - On the Hollywood Trail