Arbtech Consulting Ltd
Based in Chester · Covers UK-wide (England and Wales) Accreditation stated by provider: Not statedOwn websiteUK-wide
03 · Existing buildings & works · Condition
Japanese knotweed survey in Scotland
12 providers offering japanese knotweed survey in or across Scotland, including national firms. The rules in Scotland differ from England’s, so see the notes below.
The rules in Scotland
The same legal position applies in Scotland; the Wildlife and Countryside Act provisions on spreading knotweed into the wild cover Scotland too.
12 invasive plant specialists for Scotland
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Based in or covering Scotland (4)
Complete Weed Control
Based in Newton Aycliffe, County Durham · Covers Over 50 UK and Ireland offices Accreditation stated by provider: BASIS, NPTC, ISO 9001, ISO 14001Own websiteUK-wide
JBB Knotweed Solutions Ltd
Based in Kilsyth, Glasgow · Covers Scotland-wide Accreditation stated by provider: Property Care Association memberOwn website
Knotweed Services (UK) Ltd
Based in Glasgow (Scottish HQ); Bromsgrove head office · Covers Glasgow, Edinburgh and central Scotland; also England Accreditation stated by provider: PCA approved contractorOwn websiteUK-wide
National providers (check they cover your area) (8)
Conservation Land Services
Based in Fairford, Gloucestershire · Covers Bristol, Somerset and the South West; site states nationwide coverage Accreditation stated by provider: PCA, Certificated Surveyor in Japanese Knotweed (CSJK)Own websiteUK-wide
Invasive Vegetation Management & Treatment Ltd (IVM)
Based in Water Orton, Birmingham · Covers Midlands and nationwide; offices in Sedgley, Cambridge and Witney Accreditation stated by provider: PCA registered contractor, CSJK surveyors, CHAS, Constructionline, TrustMarkOwn websiteUK-wide
Invasive Weed Management Ltd
Based in Leeds, West Yorkshire · Covers Nationwide, with local teams including Birmingham, Bristol, Cardiff, London, Manchester, Newcastle and Leeds Accreditation stated by provider: PCA member, SafeContractor approved, Constructionline, CSCS, BASIS, NPTC qualified workforceOwn websiteUK-wide
Japanese Knotweed Ltd
Based in Romsey, Hampshire · Covers UK-wide, with staff across the UK Accreditation stated by provider: PCA Invasive Weed Control Group member, SafeContractor, CHAS, RISQS, SMAS WorksafeOwn websiteUK-wide
Japanese Knotweed Solutions Limited (JKSL)
Based in Bury, Greater Manchester · Covers North West base; works across the UK Accreditation stated by provider: PCA member, INNSA member, Amenity Standard, BASIS register, ISO 9001, ISO 14001Own websiteUK-wide
Phlorum
Based in Brighton, East Sussex · Covers National team; air quality work focused on southern England Accreditation stated by provider: PCA accredited, ISO 9001, ISO 14001, ISO 45001, Expert Witness Institute member, Trustmark registered, River Restoration Centre memberOwn websiteUK-wide
PLR Ltd
Based in Sicklesmere, Suffolk · Covers Whole of the UK and Channel Islands; offices in London, Birmingham, Warrington and East Anglia Accreditation not yet checkedOwn websiteUK-wide
TP Knotweed Solutions
Based in Banbury, Oxfordshire · Covers Whole of the UK Accreditation stated by provider: PCA Approved, CSJK-certified surveyors, NPTC-certified contractorsOwn websiteUK-wide
Japanese knotweed survey in other regions
London (11) South East (10) East of England (7) South West (10) West Midlands (12) East Midlands (6) Yorkshire and the Humber (6) North West (10) North East (6) Wales (12) Northern Ireland (6)
Getting signed off in Scotland
In Scotland, you need a building warrant from the council before work starts, and design evidence such as SAP and overheating assessments goes in with the application. At the end you submit a completion certificate with your test reports. The council then has 14 days to accept it, and you can’t move into a new building until it does, unless the council allows temporary occupation.