If you think you have seen OPM, you should firstly report any sightings to the Forestry Commission via TreeAlert or by email to opm@forestrycommission.gov.uk. They can then keep track of the outbreak.

Secondly, please do not try to remove the caterpillars or nests yourself. They need to be removed by an Arborist who has had the correct training and has the necessary equipment required. The nests must also be disposed of properly to avoid the pest spreading.

Areas Affected by OPM

Originally native to the Mediterranean regions of Europe, the oak processionary moth is now well established in a number of countries including Germany, Belgium, and Holland. The caterpillars were first found in London in 2006 and government studies show the pest spreading on an annual basis. As the map indicates, OPM is now established throughout much of greater London and some surrounding areas.

Areas affected by Oak Processionary Moth
OPM is now established throughout much of greater London and some surrounding areas as well.

Report Local Sightings of OPM

Public reporting of OPM sightings are critical to help monitor the spread of the pest, as well as to treat infestations. The Forestry Commission provides contact information and guidelines for reporting local sightings of Oak Processionary Moth.

Oak Processionary Moth Control Services

If you are looking to have your property treated by a professional, find a local Bartlett Tree Experts' office near you. Bartlett covers most areas in the UK that are affected by OPM, including the entire Greater London area.

Sponsored OPM Resource

Learn more about Oak Processionary Moth by exploring Bartlett Tree Experts' technical report.