Japanese Knotweed Case Studies and Real Treatment Results
Our Japanese Knotweed case studies showcase real remediation projects delivered across the UK by our
PCA‑accredited, CSJK‑qualified surveyors. From reduced‑dig excavation and
root barrier installation to multi‑season herbicide treatment and our
proprietary IVM FAST System, each project demonstrates how we resolve
complex infestations safely, efficiently and in full compliance with lender requirements.
These case studies highlight the challenges faced on residential, commercial and development sites —
including restricted access, neighbouring land contamination and construction deadlines — and show how
our tailored strategies deliver long‑term, mortgage‑compliant results. Explore the examples below to see
how our approach protects property value and prevents reinfestation.
View our case studies below.
Wolverhampton, WV6 –
Reduced‑dig excavation and PCA‑approved root barrier installation for an 8‑unit redevelopment,
achieving a 95% reduction in contaminated soil removal.
Sutton Coldfield, West Midlands –
FAST System eradication at a disability centre courtyard where excavation was not
possible, restoring the area to safe use for residents and preventing further spread.
South West London –
Multi‑season herbicide treatment programme delivering full control and providing lender‑compliant
documentation for affected homeowners.
West London –
FAST System eradication enabling a new apartment development to proceed without soil removal or
the need for root barrier installation.
Belvedere, Kent –
FAST System remediation controlling Japanese Knotweed, Floating Pennywort and Giant Hogweed
across a complex mixed‑use commercial site.
Polegate, East Sussex –
Integrated on‑site treatment strategy minimising waste removal and protecting adjacent land
during a residential property redevelopment.
Southampton & Portsmouth –
Coordinated herbicide treatment across multiple residential properties, ensuring full control
and lender‑approved outcomes for all homeowners.
Wisbech, Cambridgeshire –
Survey, treatment and PCA‑backed guarantee resolving a mortgage‑blocked property sale and
restoring full lender confidence.
Malden, Essex –
Full eradication of Knotweed affecting a home and neighbouring land, delivered through a
structured treatment programme supported by a PCA insurance‑backed guarantee.
Chiswick, London –
Professional herbicide treatment and monitoring programme achieving complete eradication
at a residential property and restoring full lender confidence.
Beckenham, Kent –
Full excavation and off‑site removal of approximately 30m³ of Knotweed‑affected soils,
enabling safe redevelopment and preventing further spread onto neighbouring land.
Brentwood Town Hall, Essex –
Three‑year herbicide treatment programme using the IVM FAST System to control multiple
Knotweed infestations across the southern car park.
Sir John Leman High School, Beccles –
Three‑year herbicide treatment programme delivered under Environment Agency approval
to control a mature pond‑edge Knotweed infestation within the school grounds.
Station Road Car Park, Hoveton –
Two‑year FAST System herbicide programme treating boundary‑line Knotweed while
maintaining safe access and minimising disruption to car park operations.
Ipswich Household Waste Recycling Centre –
Three‑year FAST System herbicide programme treating a mature, boundary‑spreading Knotweed
infestation while maintaining safe access and avoiding disruption to waste‑centre operations.
Lewisham Homes – Morden Hill –
Three‑year FAST System herbicide programme treating a mature, cross‑boundary Japanese Knotweed
infestation affecting two adjoining gardens and preventing tenants from safely using their outdoor space.
Fairfields, Catford –
Tight‑access Japanese Knotweed excavation delivered as part of a Lewisham Council housing
redevelopment, involving controlled removal of all contaminated soils, micro‑excavator access,
and strict boundary‑line remediation to prevent cross‑contamination.
Church End, Cambridge –
Two‑year residential herbicide treatment and monitoring programme controlling a small
Japanese Knotweed infestation emerging through paving, with neighbouring gardens monitored
due to historic growth and a lender‑accepted Knotweed Management Plan (KMP) provided.
