The Herts and Middlesex Trust says it is "thrilled" the new wetlands are helping species thrive.

An endangered damselfly has been spotted in wetlands created by an “ambitious” project that restored a stretch of a rare chalk river.

The scare blue-tailed damselfly, one of the world’s earliest flying insect species, was recorded alongside the River Ash near Hertford.

The 4.3-mile (7km) stretch at the Easneye Estate was restored to its original course last year.