This series explores five of Britain's most extreme winter landscapes, looking at the conditions that challenge both the wildlife and people that try to survive in the countryside, and uncovering a world few get to see.

Ellie Harrison visits the Shetland Islands as she explores island life during Britain's most challenging season. From Viking practices to present-day crofting, and from rescued seal and otter pups to the mesmerising beauty of the Northern Lights, island life, it would seem, is far from dull in winter. Show less