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An interactive Heatmap, continuously updated with over 48,000 sightings of Japanese knotweed in the UK.

CHECK OUT YOUR AREA ON THE HEATMAP

View the Exposed Heatmap to see how many sightings there are in your area of interest. Search by postcode to see whether you, your family or friends live in low or high risk areas.

If you are buying a property, check-out Exposed™ to see whether you're buying in a risky area and take action to reduce your risk.

JOIN THE FIGHT AGAINST JAPANESE KNOTWEED

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REPORT SIGHTINGS

You can join the fight against Japanese knotweed by reporting any sightings of Japanese knotweed online, using your smartphone, tablet, or desktop computer. We've made it really simple, it takes just a few seconds. Click + Sighting, zoom in on the satellite view and click the central position of the knotweed location. You'll only be asked to define the size of the infestation, some further information is requested but is optional. No sign-in or passwords are required.

DISCLAIMER

Japanese knotweed can be present in the ground, even when there is no sign of it above ground. The Heatmap is based upon reported sightings, some are verified, some are not. Japanese knotweed may be present but not have been reported, so the Heatmap should be used as a guide only, and should not be used as a definitive record of all knotweed locations. It is recommended you obtain specific professional advice before you take any action. No responsibility for loss occasioned by any person acting or refraining from action as a result of this material can be accepted by Environet UK Ltd.