Wildlife coated in oil after 4,000-litre spill from London bus depot into River Wandle

A coot covered in oil near the River Wandle - (Bobby Dean/X)

Wildlife have been coated in oil after an estimated 4,000 litres spilled into a rare chalk stream in London, officials have said.

The Environment Agency said the oil had spilled into surface water drains and affected the River Wandle, a once-heavily industrialised chalk stream that has been revived and is now home to wildlife such as brown trout to kingfishers.