Freshwater West (Pembrokeshire Coast National Park) as Dover Beach
The crew films scenes on the Dunkirk beach and Tom sees Catrin off to return to London.
Source: IMDb
Their Finest Hour and a Half Filming Locations
Their Finest Hour and a Half was filmed in the United Kingdom
Porthgain Harbour as Dover Harbour
Catrin and Tom talk while the crew films establishing shots and later they get into an argument under the full moon.
Source: IMDb
Pinewood Studios as Pinewood Studios
Catrin serves as the on-set writer when the production moves to the studio.
Source: IMDb