Service
Knotweed Removal in London
Knotweed removal is the practical end of the process, the physical work that eliminates Japanese knotweed from your property. We connect London homeowners, landlords and developers with vetted specialists who carry the right qualifications, the right insurance and a track record of guaranteed outcomes.
Book Your Knotweed RemovalWhy London Property Owners Choose Us for knotweed removal
Knotweed removal is rarely as dramatic as homeowners expect. For the vast majority of London properties, a properly managed herbicide programme is the most cost-effective and least disruptive option, and produces the same insurance-backed guarantee that excavation does.
Herbicide treatment usually takes three to five growing seasons. A specialist visits the property two or three times a year (typically late spring, mid summer and early autumn), applying glyphosate by stem injection or foliar spray. The plant translocates the herbicide down to the rhizome, exhausting the root system over successive seasons. Monitoring continues for a further one or two years to confirm dormancy.
Where time is critical, a sale falling through, a planning deadline, a development start date, excavation is the alternative. Contractors dig out the rhizome zone to a depth of two to three metres, screen the spoil and either remove it under a licensed Duty of Care to a permitted landfill or bury it on site within an engineered, root-barrier-lined cell. On-site burial is significantly cheaper and is accepted by most London planning authorities when properly documented.
Hybrid approaches are common in London's tight gardens: limited excavation around drains, foundations and boundaries, combined with herbicide treatment for the remaining stand. Our partner contractors will quote each method honestly so you can choose on cost, speed and disruption rather than being upsold to the most expensive option.
All removal work is signed off with a written guarantee underwritten by an independent insurer. This is the document mortgage lenders ask to see, and it transfers automatically to any future owner, restoring the property's full market value.
What's Included
Multiple Removal Methods
Herbicide treatment, full excavation, on-site burial cells and off-site disposal, matched to your timescale and budget.
Insurance-Backed Guarantee
Every removal programme is covered by a 5 or 10-year warranty acceptable to all major UK mortgage lenders.
Licensed Waste Disposal
Knotweed is controlled waste under the Environmental Protection Act 1990. All material is removed under a Duty of Care chain.
Minimal Garden Disruption
For occupied homes we prioritise herbicide programmes that preserve lawns, patios and planting beds wherever possible.
Knotweed Removal Across London
Specialist knotweed removal in every London borough we cover.
Need knotweed removal in London?
Speak to a specialist today and have your written quote within 48 hours.
Get Started TodayFrequently Asked Questions
How much does knotweed removal cost in London?
Herbicide programmes for a typical residential stand cost £2,500 to £4,500 over the full programme. Excavation starts around £6,000 and rises with stand size and access.
How long does removal take?
Herbicide treatment runs over three to five growing seasons. Excavation is usually completed in one to three days on site, plus a short monitoring period.
Will my mortgage lender accept the work?
Yes, provided the work is covered by an insurance-backed guarantee (IBG) from a recognised provider. All our partner contractors offer IBGs.
Can I remove knotweed myself?
It is legal but rarely advisable. DIY removal almost always misses rhizome material, spreads the plant and produces no guarantee, which means no mortgage acceptance.
What happens to the excavated soil?
Either it is removed under a licensed Duty of Care to a permitted landfill, or it is buried on site within a root-barrier-lined cell at a depth of at least two metres.
Is it safe to live in the property during treatment?
Completely. Modern glyphosate applications are targeted, low-volume and approved for use in occupied gardens. Children and pets should simply avoid treated areas for 24 hours after application.
What if the knotweed comes back?
Insurance-backed guarantees fund any required re-treatment for the warranty period (5 or 10 years) at no further cost to the property owner.
Do you remove other invasive species?
Yes, our partner contractors also remove giant hogweed, Himalayan balsam, bamboo, buddleia and other Schedule 9 invasive species.