Campaigners claim England's river life is under threat from 'insidious' pollution, yet the government says rivers are at their healthiest in 20 years. Tom Heap investigates. Show more
Discover 11,128,835 listings and 278,128 playable programmes from the BBC
Campaigners claim England's river life is under threat from 'insidious' pollution, yet the government says rivers are at their healthiest in 20 years. Tom Heap investigates. Show more