S1E1 - Mountains
Only the hardiest of beasts survive in Britain's mountains and uplands, including the golden eagle and its prey the mountain hare, plus 400,000 red deer and flamboyant black grouse.
March 6, 2018, midnight
S1E2 - Forests
Britain's forests contain majestic trees, some of them thousands of years old. Behind the leafy veil, there are booming populations of previously rare wild boar and goshawks.
March 13, 2018, midnight
S1E3 - Coasts
From sandy beaches to soaring cliffs, Britain's coastlines are one of nature's wildest habitats, where hardy creatures are battling to survive.
March 20, 2018, midnight
S1E4 - Rivers
With more than 6,000 rivers criss-crossing our land, their denizens often go unnoticed. Solid bones and high oxygen levels mean a dipper bird can dive underwater for 30 seconds.
March 27, 2018, midnight
S1E5 - Water Worlds
In the varied water worlds all kinds of wildlife thrive, from slithering grass snakes to delicate reed warblers.
April 3, 2018, midnight
S1E6 - Countryside
Evidence of how the countryside has changed more in the last 100 years than in the previous two thousand. Barn owls fight for their territory against kestrels.
April 10, 2018, midnight
S1E7 - Islands
On North Ronaldsay, one rare breed of sheep can subsist on a diet of only seaweed. In the Shetlands, otters benefit from a current of warm water flowing up from Spain.
April 17, 2018, midnight
S1E8 - Cities
Hedgehogs have declined in numbers from 30 million to one million in 60 years. Great crested newts enjoy an elaborate courtship in larger ponds.
April 24, 2018, midnight