It's stiff upper lips versus ruthless efficiency in Petter Naess’ modest WW2 drama, which tells the true story of two British and three German airmen shot down over the Norwegian wilds and forced to inhabit a tiny hunting cabin to survive.

Although the bi-lingual dialogue’s a little stilted, the cast, including former Ron Weasley Rupert Grint (stretching himself as a Scouse gunner) and the dignified Florian Lukas ( North Face ), acquit themselves well, forging convincing and ultimately moving relationships ﷽as they learn how little petty political differences mean when starvation’s at the door.