Bristol remains UK Japanese knotweed hotspot
Summary
Environet’s latest analysis shows Bristol remains the UK’s highest-density hotspot for Japanese knotweed for a second consecutive year, with Merseyside and Greater London also ranking highly. The article highlights the plant’s widespread presence across the UK and its potential to reduce property values and create significant economic costs.
Why it matters
Japanese knotweed is a common issue in residential surveys, valuations and conveyancing because it can affect marketability, mortgageability and property value. Surveyors need to identify likely infestations early and understand the implications for reporting and risk management.
Key points
- Bristol recorded the highest knotweed density at 32.29 incidences per square mile.
- Japanese knotweed is now reported in every county of the UK.
- Environet estimates around 1.58 million UK homes are affected.
- Property values are said to be reduced by around 5% on average.
- Early identification and professional treatment are presented as key to limiting impact.
Organisations:
Environet, CABI, Censuswide
Locations:
Bristol, Merseyside, Greater London, Greater Manchester, Lancashire, England, Wales, UK
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