The Forestry Commission has examined our oak trees following sitings of the Oak Processionary Moth Caterpillars. They have marked the trees that have nests with a white line.
OPMs live exclusively in oak trees. They move in nose-to-tail processions, hence their name. They often cluster together. They build white silken webbing trails and nests - usually dome or teardrop-shaped on oak trunks and branches (not among the trees). The nests soon become discoloured.
The trees will be treated by the Forestry Commission with a chemical spray. In the meantime please be cautious around the infected trees and keep away from the the caterpillars and nests as touching them can cause a nasty reaction.
The Forestry Commission issue the following advice on protecting yourself: