The Knotweed Experts are a PCA-approved Japanese knotweed removal contractor. We operate in London, Essex, Kent, Hertfordshire, but also nationwide, The Knotweed Experts provide bespoke knotweed removal solutions to landowners and house buyers. Thorough site survey is carried out & Knotweed Management Plan is prepared for a bespoke and most effective method of knotweed treatment. We provide treatment certificates and other documents required by mortgage companies. 5 / 10-year guarantees.