[3] The Guardian reported ahead of the series' start that a sixth episode would not be broadcast due to a fear of backlash from Conservatives and right-wing media over its themes of destruction of nature.
The United Kingdom is one of the most nature-depleted countries on the planet, but the English oak trees are globally important.
Oak trees provide homes for over 2300 species of animals and plants, including the white admiral, barn swallows, the coal tit, and willow warblers.
A female hazel dormouse climbs an oak to collect honeysuckle for her offspring, and narrowly escapes a tawny owl.
Some insect pollinators have evolved a special relationship with certain plant species, such as the hummingbird hawkmoth with the red valerian, the white-tailed bumblebee with bittersweet, and owl-midgeflies with lords-and-ladies.
A family of European red foxes play in the hay left behind after the harvest and attempt to catch Summer Chafers.
Lying down beside the puffins, David Attenborough reveals that hardly any of Britain's original wildlife remains, and that we must act now to preserve these creatures into the future.
Wild Isles on Location: Needles in a Haystack shows how the filming crew managed to get footage of the 27 pod of orcas hunting seals in Shetland.
In a patch of Caledonian Pine Forest in the Cairngorms National Park in Scotland, some of the last woodland-dwelling golden eagles nest.
In winter in the Forest of Dean, hazel dormice hibernate, and wild boar dig through the snow, which allows a European robin to hunt earthworms buried in the frozen ground.
Up higher, willow catkins flower too, and their pollen attracts both insects such as the tree bumblebee and birds like the Eurasian blue tit and European goldfinch.
Various fungi (including common stinkhorn, fly agaric, orange peel fungus, brown puffballs, octopus stinkhorn and many others) now sprout mushrooms and toadstools to spread their spores, and the wood wide web is shown through time-lapse photography and computer-generated imagery.
Wild Isles on Location: Into the Canopy shows how the filming team captured footage of golden eagles in Scotland and a vast flock of starlings at their roost in Cornwall.
In a field of barley on Islay, European brown hares undergo their courtship rituals, but have to watch out for golden eagles.
Some of the species that live here include meadow browns, the marbled white, hairy-legged mining bees and large blues.
In the Hebrides, grass keeps the sand dunes intact and protects a vital habitat: machair grasslands.
Two-coloured mason bees lay their eggs inside the empty shells of brown-lipped snails, hollowed out by the larvae of the common European glowworm.
The bees then carry bits of dry grass to their "nests" to hide them and give their young the best chance of survival.
Almost half of Britain's butterflies, like the marbled white, large skipper and meadow brown are at risk of extinction.
Large blues were once extinct in Britain, but after this extraordinary life cycle was discovered, they were reintroduced from mainland Europe.
In early spring in Northumbria, Common european adders emerge from hibernation and perform their courtship rituals.