This series has been fully up-rezzed to HD, re-voiced, new editing to sort errors discovered and re-balanced to have fewer recaps for binge watchers rather than 24 weeks of serial TV.
As the New Year dawned and the people of Britain faced the introduction of rationing, all eyes turned northwards to Scandinavia, where Adolf Hitler was preparing for full-scale invasion.
U-Boat attacks increased and at Scapa Flow a German Air Raid claimed the first British casualties.