Thousands of blue-clad protesters join London march for clean water

More than 130 organisations take part in protest demanding government action over country's sewage crisis

Thousands of blue-clad protesters have told the government to stop poisoning Britain's water" as they marched through London calling for action on the country's contaminated coastal waters and rivers.

A coalition of more than 130 nature, environmental and water-sport organisations called supporters out on to the streets of the capital on Sunday afternoon, aiming to create the country's biggest ever protest over water.