Explores Britain's most extreme winter landscapes. Ellie Harrison looks at British mountains as she reveals the surprises this terrain holds, from avalanches to reindeer.

Explores Britain's most extreme winter landscapes. Ellie Harrison is in the Lake District, finding out about an extremely rare Arctic winter resident.

Explores Britain's most extreme winter landscapes. Ellie Harrison visits Britain's forests during the winter months, looking at charcoal creation and tree planting.

In a series exploring Britain's most extreme winter landscapes, Ellie Harrison is in the UK's largest estuarine habitat in Morecambe Bay, Cumbria.

Series exploring Britain's most extreme winter landscapes. Ellie Harrison visits the Shetland Islands to learn about island life during Britain's most challenging season.