A charity set up to promote sustainable farming has launched a fundraising campaign to protect one of the UK’s most endangered mammals.

The Countryside Regeneration Trust, which owns three farms in Surrey, wants to raise £6,000 for equipment to monitor populations of dormice in the county.

Conservationists believe dormouse populations have crashed by 70% in the last 25 years, becoming extinct in 14 counties, due to habitat loss.

The trust wants to use 250 footprint monitoring tunnels to track their movements at sites in Farnham and Frensham in Surrey, as well as farms in Herefordshire and Dorset.