Climate: Chris Packham's 'grave concerns' for UK wildlife
It follows a State of Nature report, thought to be the most comprehensive review of Britain's natural world, which blamed the loss of wildlife on farming, climate change, unsustainable fishing and marine development.
Please use Chrome browser for a more accessible video player
6:20
Wildlife expert Chris Packham spoke to Sky News from a protest outside Defra, London, saying: "We are one species on one planet, with one big problem."