Ben Morris, founder of the Clean Up the River Brent campaign (Curb), said: "It's like going back to the mid-19th Century when there were no water treatment works. "We've gone back to a time when ...

About 400 Olympic-sized swimming pools worth of water has been drained from Brent Reservoir as part of a £2m project by the Canal and River Trust. Brent Reservoir was built in 1835 to supply ...