A National Trust property has warned of caterpillars which harm oaks and cause skin rashes.

Visitors to Cliveden have been warned to take care after the discovery of Oak Processionary Moth (OPM) caterpillars in the estate’s gardens and woodlands.

The caterpillars, which are only found on oak trees, can pose a risk to people, dogs and wildlife. Contact with the caterpillars or their nests can cause skin irritation, sore throats and itchy eyes.

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OPM caterpillars are known for moving in distinctive nose-to-tail processions and building silky, web-like nests on oak trees and branches.

Cliveden is urging visitors to keep dogs under close control and avoid touching the caterpillars or nests.

Anyone who spots a suspected OPM nest is asked to report it to a member of staff, who will alert the estate’s ranger team.