Chalk streams, including Wiltshire's River Wylye, are under threat – but there is a plan to help them.

The fight is on to save a rare ecosystem of chalk streams referred to as the Amazon of the UK.

The UK is home to 85% of the world’s chalk streams – clear waterways teeming with unique wildlife – but there are concerns about their future, with the usual threats to rivers hanging over them, including pollution.

This year, a bill was introduced in Parliament in a bid to give them protected status with Unesco. It is due to have a second reading in October.