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.

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.

Hedgehogs have declined in numbers from 30 million to one million in 60 years. Great crested newts enjoy an elaborate courtship in larger ponds.