Specialist control services


Japanese Knotweed Ltd has been helping homeowners and businesses across London and its suburbs by treating and removing knotweed infestations since 2010. We are London’s trusted Japanese knotweed removal experts with over 10,000 satisfied customers and over 1,000 independent five-star reviews on Trustpilot.

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TREATING AND REMOVING Japanese Knotweed in and around London

London and Greater London host some of the UK’s major hotspots for Japanese knotweed infestations. Knotweed grows prolifically and quickly across cities but our specialist services control and remove knotweed, avoiding potential costly legal issues knotweed can cause.


Excavation is the best option for City of London residents and business who need Japanese knotweed removed for good.

Japanese knotweed is a highly resilient invasive weed species that is capable of growing new shoots from its root network. These special roots are known as rhizomes, and even a tiny piece as small as 0.5g is capable of allowing the infestation to regrow. With root systems that bury deep into the ground, excavation of the contaminated soil is the best way to completely remove the infestation.

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Excavator working on clearing a site of Japanese knotweed ground contamination

London’s Knotweed CONTROLLED with herbicide TREATMENT

Chemical Treatment (herbicide) applies a specific herbicide to the plant as part of a planned programme to control its growth and stop the spread. Japanese knotweed treatment will exhaust the plant’s ability to grow and will force it into a dormant state. Over the course of the plan, herbicide will prevent the plant producing aerial growth and additionally, prevent the rhizomes from growing further. If the knotweed area is likely to be disturbed physical removal of the knotweed may be required instead.

Treatment methods include stem injection, herbicide spray and leaf wiping. Our herbicide programmes are packaged within a  Knotweed Management Plan (KMP), which comes with an Insurance Backed Guarantee.

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Japanese knotweed being treated with herbicide


The average cost to remove Japanese knotweed in London varies, depending on the methods involved and the size of the affected areas. If it is identified and dealt with promptly, the costs of removing Japanese knotweed can be kept to a minimum. Long-term herbicide treatment is usually the most cost-effective control method. Our professionally delivered herbicide treatment programme will provide successful chemical control of Japanese knotweed within a period of 3-7 years.

Excavation of Japanese knotweed costs more than herbicide treatment due to labour, materials, waste removal and reinstatement costs. However, it ensures complete Japanese knotweed removal allowing free use or development of the property. We provide cost-efficient excavation due to our extensive experience whilst minimising waste volumes.

Following our professional surveys we will provide you with a no-nonsense, comprehensive report with no-obligation recommendations and quotes.

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New houses being built on a construction site

Construction site in Wembley tackles Invasive Weeds

In this case study, we look at some of the challenges faced by a large construction operation in Wembley, London when they ran into invasive weeds Japanese knotweed and Giant hogweed. Discover how our London team provided the best solution. READ MORE…



Japanese Knotweed Ltd has been operating in London and its suburbs since 2010 and we have established some really strong ties to local business and communities. Our highly trained and accredited surveyors and technicians carry out treatment plans and excavations for hundreds of satisfied customers throughout the capital, and we would be thrilled to have your business.

Fill in the contact form to enquire about our services, and one of the team will get in touch.

We are members of the Property Care Association and have a proven track record working successfully for local councils, developers, construction companies and private landowners. If you are selling or buying a property that is affected by Japanese knotweed, request your free* Japanese knotweed Survey.

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London Knotweed Services

Removing Japanese knotweed starts with a survey. Book your professional survey with us today.

Why choose us

  • With hundreds of satisfied customers in London and over 1,000 five-star reviews on Trustpilot, we’re the UK’s trusted Japanese knotweed experts
  • We work closely with you to tailor a site-specific package, often utilising several treatment techniques on a single site
  • We work to the PCA Code of Practice means we can provide you with an Insurance backed Guarantee
  • Our London office is ready to help you get rid of knotweed
A stem of Japanese knotweed leaves

Our top clients


Being a nationwide company our surveyors and operatives are located up and down the UK. Find out more about our teams, their knowledge and experience, and why you can trust them to provide you with outstanding customer service.



Our friendly team can help with any suspected knotweed issues.