Thousands of people from the Midlands will be joining forces to highlight the importance of clean water in their lives.

Friends of the River Wye, and SafeAvon are just some of the 130 groups taking part in a London rally organised by the campaign charity River Action.

The RSPB, the National Trust and the World Wildlife Fund will be joined by naturalist Chris Packham, broadcasters Carol Vorderman and Liz Bonnin and Olympic rowing champion Imogen Grant in the capital on Sunday.