Andrew Scott finds levels of complexity in a stoic character based on meteorologist James Stagg, the man who persuaded Eisenhower to delay Operation Overlord, for this slick wartime drama

The story at the heart of this absorbing film is true, or mostly true, but if it weren't you'd think it had been machine-tooled to appeal to a British audience.

Experts helped guide weather scenes in Pressure – a film depicting dramatic buildup to 1944’s D-day landings