Ray Harper, left, and Dave Jordan with the cannon pulled from the River Don in Sheffield Magnet fishermen have pulled a cannon from Sheffield's River Don, calling it the "Holy Grail of finds".

These Sheffield neighbours worked for hours to clean up piles of fly-tipping from the River don off Winn Garden on December 30. By the very next morning, fresh rubbish had been dumped overnight.

"It's a particular problem in Sheffield where the River Sheaf outlet enters the River Don. "But it happens elsewhere too: the upper River Sheaf near Totley, near Ringinglow, and also in Derbyshire ...