Hackney residents left bemused after foam engulfs the River Lea

Stunned residents have taken to Twitter to post pictures of the bizarre scene when a mass of foam filled the River Lea over the weekend.

The giant white mass, which appeared near Hackney Marshes, is thought to be due to an industrial detergent spillage further up the river. The Environment Agency have not yet found the source of the problem, but it has now been cleared up.