Forestry Commission: London and Surrey people reminded about caterpillar pest in oak trees
"People in parts of London and Surrey are being reminded not to approach caterpillars of the oak processionary moth (OPM), which are now emerging in oak trees in these areas.
They are also advised to keep children and animals away from the caterpillars and their nests, because the caterpillars’ hairs can cause itching skin rashes and other health problems. The public is also urged to report any sightings.
Affected areas include: several boroughs in West and South-West London; Bromley and Croydon and southern parts of Lewisham in South London; and Elmbridge and Spelthorne Districts in Surrey."