Britain has lost almost half of its biodiversity since the Industrial Revolution and more than 400 species over the last 200 years. Critically endangered Wildcat Greater mouse-eared bat Vulnerable Hedgehog Hazel dormouse Orkney Vole Serotine bat Barbastelle bat Endangered Beaver Red squirrel Water vole Grey long-eared bat Near threatened Mountain hare Harvest mouse Lesser white-toothed shrew Leisler's bat Nathusius' pipistrelle …