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Environmental Lab Companies in the UK: 800+ Active Firms (2026)
Environmental lab companies test air, water, soil and emissions quality for compliance-led monitoring programmes across the UK.
Buying centres tend to sit with environmental managers, compliance teams, plant operators and consultants who need auditable sampling rather than general advisory work. Sales are mostly business-to-business, with public-sector and utility demand where statutory reporting creates repeat monitoring cycles. Engagements range from project-based site investigation to outsourced lab capacity for multi-site industrial programmes, usually with chain-of-custody discipline, accredited methods and field teams able to collect defensible samples before analysis. The commercial centre of gravity is mid-market: specialist headcount matters, but buyers also look for coverage across water, soil, air and stack-emissions workflows.
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The UK cohort contains 809 active environmental lab companies, a relatively specialised population compared with broader environmental consultancy or waste services. Reported employment totals 3,993 people, so the footprint is visible but not labour-heavy in the way field contracting can be. The shape implied by the buyer base is mixed: lean expert laboratories serving statutory monitoring needs sit alongside mid-market providers able to support utility, infrastructure and industrial accounts.
England and Wales compliance work sits close to Environment Agency rulemaking, especially where industrial operators need defensible emissions and water-monitoring evidence. MCERTS matters for stack-emissions monitoring because it separates personal competency from organisational performance accreditation, making the approval pathway part of the service model rather than an afterthought. Accreditation and recognised laboratory quality systems also shape how sampling, calibration, chain-of-custody and reporting are specified. That structure favours providers that can document methods clearly and maintain field and laboratory controls under audit.
Demand appears tied less to discretionary sustainability spending than to statutory monitoring, infrastructure work and industrial permitting. That should make the category more resilient than advisory-only environmental services, although margins may stay constrained where sampling logistics and laboratory capacity are hard to automate. Scale-up scarcity is likely to persist: many operators tend to remain specialist service businesses, while larger buyers prefer suppliers with accreditation breadth, field coverage and dependable turnaround. Consolidation may continue where mid-market labs need wider method coverage or geographic reach.
809
Active firms
2026
54
Over £5M
reported revenue
38
New incorporations
since 2022
Key facts
About 6% of the trading cohort reports turnover above £5M (54 of 809 firms) — the rest sits below that revenue band.
4% of the cohort was incorporated since 2022 (38 firms), so a sizeable share is in its first few filing cycles.
MCERTS sets standards for stack-emissions monitoring through personnel certification and organisational accreditation, with UKAS and ISO/IEC 17025 referenced for testing and calibration quality assurance.
Environment Agency scientists analyse 99,000 water samples annually and produce over 1.7 million individual measurements across more than 1,800 elements in water.
That water-monitoring workload fulfils 42 legislative requirements across nearly 100 programmes and themes, keeping demand tied to statutory monitoring cycles.
The UK environmental goods and services sector contributed £60.2 billion in 2022, equal to 2.7% of total UK gross value added.
Eurostat estimates the EU environmental economy generated €1 327 billion of output and €492 billion of gross value added in 2023.
Top UK environmental lab companies
TMS Environmental Ltd
Trajectory
5y · 2022–NowFinancial sub-scores
Computed from 5 filingsProvides environmental consultancy, monitoring and laboratory analysis services. Conducts testing of soil, water, air, waste and gases, as well as odour, noise and occupational hygiene monitoring,…
Serves regulated businesses, developers and public-sector bodies needing environmental compliance support, including waste, pharmaceutical, industrial, construction and infrastructure organisations…
Financial Health
StrongStrong · Growing, Hiring · 8% CAGR over 3y
Location
ALS Industrial Services Ltd
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides laboratory testing, inspection and analytical services for environmental, mining, food, pharmaceutical and industrial sectors, including water, soil and air analysis, geochemistry, materials…
Serves B2B customers across environmental, water, mining, commodities, food and agrisciences, pharmaceutical, healthcare, personal care and industrial sectors, including teams managing compliance,…
Financial Health
HealthyHealthy · Growing, Hiring · 3% CAGR over 4y
Location
ALS LIFE SCIENCES LIMITED
Trajectory
2y · 2019–NowFinancial sub-scores
Computed from 2 filingsProvides laboratory testing, analytical services and inspection for environmental samples, food and agricultural products, pharmaceuticals, personal care products and mining materials, including…
Serves businesses and public-sector bodies in environmental management, water utilities, mining and commodities, food and agriscience, personal care, pharmaceuticals and healthcare.
Financial Health
WeakWeak · 0% CAGR over 1y
Location
CURA TERRAE OH AND EMISSIONS TESTING LIMITED
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides UKAS and MCERTS‑accredited stack emissions testing, calibration and validation of continuous emissions monitoring systems, occupational hygiene assessments, workplace air and noise…
Serves UK industrial operators and employers with regulated emissions or workplace exposure risks, including businesses needing permit compliance, CEMS support, COSHH, air or noise monitoring.
Financial Health
StableStable · Hiring · 29% CAGR over 5y
Location
CES Environmental Instruments Ltd
Trajectory
3y · 2022–NowFinancial sub-scores
Computed from 3 filingsProvides environmental emissions testing and monitoring services, including BS EN 14181 compliance testing, calibration and maintenance of continuous emissions monitoring systems (CEMS). Supplies…
Serves industrial businesses subject to emissions regulation, including CEMS users, stack testers, environmental managers and process engineers needing accredited testing, equipment and technical…
Financial Health
HealthyHealthy · -3% CAGR over 2y
Location
ALKALI ENVIRONMENTAL LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides environmental testing and consultancy services including MCERTS stack emissions testing, air quality assessments, ambient air monitoring, construction dust monitoring, noise and odour impact…
Serves UK businesses and regulated site operators, including industrial facilities, construction projects, property developers and organisations subject to environmental permits, emissions monitoring…
Financial Health
HealthyHealthy · Hiring · 59% CAGR over 4y
Location
ATESTA LIMITED
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides stack emissions testing for industrial facilities, including MCERTS-accredited monitoring of air pollutants from chimneys and exhaust stacks. Uses specialised testing equipment and technical…
Serves UK businesses operating permitted industrial sites, particularly organisations needing environmental compliance support for stack emissions, workplace air monitoring and occupational hygiene.
Financial Health
HealthyHealthy · Hiring · 15% CAGR over 2y
Location
4-RAIL SERVICES LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides environmental and materials inspection, laboratory testing and consultancy services for rail, construction and civil engineering sectors, including asbestos surveys, dust and diesel…
Serves B2B clients in rail, construction, civil engineering, highways, airports, ports, power, premises management and pre-demolition sectors, typically organisations managing workplace safety,…
Financial Health
StableStable · -69% CAGR over 4y
Location
Anchem Laboratories Limited
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides accredited laboratory testing and environmental consultancy services, including asbestos testing and inspection, stack emissions monitoring, occupational hygiene and workplace exposure…
Serves public and private sector organisations, especially industrial and commercial duty holders needing environmental compliance, asbestos management, emissions monitoring and occupational hygiene…
Financial Health
WeakWeak
Location
Envirochem Analytical Laboratories Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides environmental and occupational health testing and consultancy services. Conducts chemical and microbiological analysis, asbestos surveys and air monitoring, occupational hygiene assessments,…
Serves B2B customers across multiple sectors, including employers, property and facilities teams, construction contractors and industrial operators responsible for workplace safety, asbestos, waste,…
Financial Health
StableStable · Hiring · 7% CAGR over 4y
Location
Environmental Compliance Limited
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsProvides environmental consultancy and monitoring services, including planning and permitting support, environmental impact assessments, air quality and emissions testing, noise monitoring and…
Serves UK and international businesses with environmental regulatory and workplace safety obligations, including industrial operators, waste and landfill sites, developers, remediation projects and…
Financial Health
StrongStrong · Growing, Hiring · 4% CAGR over 3y
Location
HARRISON GROUP ENVIRONMENTAL LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides geotechnical and geoenvironmental engineering services including site and ground investigations, contaminated land assessment and remediation, soil, rock and water sampling, UKAS‑accredited…
Serves developers, contractors and project teams on infrastructure, international development, renewable energy and residential schemes across the UK, including domestic and international clients…
Financial Health
StableStable · 1% CAGR over 4y
Location
CURA TERRAE LIMITED
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides environmental consultancy and technical services including ecology, archaeology and landscape planning, air quality monitoring and emissions testing, water quality and flow monitoring,…
Serves businesses and public-sector organisations across sectors that need environmental compliance, sustainability, workplace safety or project-related environmental support.
Financial Health
StableStable · Hiring · 10% CAGR over 2y
Location
Decus Research Limited
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsProvides laboratory testing and scientific consultancy focused on water quality and environmental monitoring. Conducts microbiological and chemical analysis of potable water, effluent, and…
Serves B2B and public-sector clients, including local authorities, landfill and quarry operators, industrial sites, developers, water bottling plants, effluent treatment operators, and pool/spa…
Financial Health
HealthyHealthy · Hiring · 26% CAGR over 3y
Location
AGROCHEMEX ENVIRONMENTAL LTD
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides contract research and laboratory testing for agrochemicals and environmental products, including agricultural field and glasshouse studies, environmental fate and metabolism analysis,…
Serves agrochemical, crop protection and agricultural R&D organisations needing field, environmental, ecotoxicology and chemistry studies for product testing and regulatory support.
Financial Health
HealthyHealthy · Hiring · 5% CAGR over 2y
Location
OLFASENSE UK LTD
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides odour measurement, testing and consultancy services for industry and product development. Conducts environmental odour surveys, emission testing, dispersion modelling and laboratory…
Serves businesses from small firms to multinationals, especially industrial operators needing environmental odour assessment and control, plus consumer product and materials companies seeking sensory…
Financial Health
HealthyHealthy · Hiring · 21% CAGR over 4y
Location
QA3 LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides on-site and laboratory chemical analysis for the oil, gas and petrochemical sectors, measuring trace contaminants such as mercury, arsenic, oxygen and sulphur, and offering analytical…
Serves B2B clients in the global oil, gas and petrochemical industries, including upstream offshore, midstream and downstream operators, plus organisations managing decommissioning projects.
Financial Health
StrongStrong · Growing, Hiring · 10% CAGR over 4y
Location
Silsoe Odours Ltd
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides odour measurement, testing and consultancy services, including odour sampling, laboratory analysis, dispersion modelling, and surveys. Supports industries with odour emission assessment,…
Serves UK and Ireland businesses facing odour emissions or planning impacts, including waste, composting, landfill, biofuels, intensive farming, food processing, rendering, wastewater, commercial…
Financial Health
HealthyHealthy · Hiring · 29% CAGR over 4y
Location
Ocean Ecology Limited
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides marine environmental and ecological surveys, monitoring and consultancy for offshore and coastal developments. Services include habitat mapping, site characterisation, benthic and sediment…
Serves blue-economy organisations and developers in offshore wind, oil and gas, subsea cables, aquaculture, aggregates and dredging, ports, harbours, marinas and nuclear, plus bodies involved in…
Financial Health
StrongStrong · Profitable, Growing, Hiring · 50% CAGR over 2y
Location
Westfield Caledonian Limited
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides workplace environmental monitoring and consultancy services, including air quality and water safety testing, occupational hygiene assessments, water safety risk assessments, and system…
Serves UK industrial, commercial, education, healthcare and offshore organisations with workplace environment compliance responsibilities, including facilities, estates and HSE teams.
Financial Health
StrongStrong · -4% CAGR over 2y
Location
THE TESTING LAB PLC
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides accredited laboratory testing and consultancy for asbestos, legionella, and geotechnical materials. Services include asbestos surveys and analysis, air monitoring, soil and construction…
Serves UK organisations needing environmental compliance, including property owners/managers, construction and demolition firms, facilities teams, employers and public-sector bodies responsible for…
Financial Health
HealthyHealthy · -52% CAGR over 5y
Location
LONDON LABORATORIES LTD
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsProvides environmental and health & safety consultancy, specialising in asbestos management. Services include asbestos surveys, air monitoring and bulk sample analysis through a UKAS‑accredited…
Serves organisations responsible for property, construction and facilities management, including contractors and duty holders needing asbestos, legionella, lead and environmental compliance support.
Financial Health
HealthyHealthy · -5% CAGR over 3y
Location
SOUTH EAST LABORATORIES LIMITED
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsProvides laboratory water testing and analysis services, including Legionella detection and microbiological and chemical testing for potable water systems, cooling towers, wastewater and swimming…
Serves UK businesses and facilities managers responsible for water systems, including building services firms, healthcare providers, leisure facilities, managed offices/residential properties,…
Financial Health
StableStable · -14% CAGR over 3y
Location
CASA ENVIRONMENTAL SERVICES LTD
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides UKAS-accredited asbestos surveying, testing and analytical services, including management and refurbishment surveys, air monitoring, and bulk sample analysis. Also delivers asbestos…
Sells primarily to businesses and organisations needing asbestos, water hygiene and related compliance services, including property owners, facilities teams, contractors and marine operators across…
Financial Health
StrongStrong · Growing, Hiring · 28% CAGR over 2y
Location
GROUND-GAS SOLUTIONS LIMITED
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides ground gas monitoring, analysis and consultancy services for construction, infrastructure and contaminated land projects. Conducts continuous gas monitoring, vapour and radon assessment,…
Serves infrastructure developers, property managers, environmental consultants and regulators involved in built environment, contaminated land, landfill and large-scale development projects across…
Financial Health
StableStable · -88% CAGR over 2y
Location
Cavendish Laboratories Limited
Trajectory
3y · 2022–NowFinancial sub-scores
Computed from 3 filingsProvides laboratory testing services for asbestos and water quality, including asbestos bulk identification, air fibre counting, legionella and microbiological analysis, surface hygiene swabs,…
Serves businesses and organisations needing asbestos, legionella, water, air quality and hygiene compliance support, including facilities teams, site managers, building owners, workplaces and pool or…
Financial Health
DistressedDistressed · 0% CAGR over 2y
Location
CURA TERRAE WATER LIMITED
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides environmental and water management services including water quality monitoring, flow measurement, trade effluent monitoring, and environmental consultancy. Supplies monitoring equipment such…
Serves businesses across industries with environmental and water compliance obligations, especially organisations managing industrial wastewater, trade effluent, flow monitoring, water quality,…
Financial Health
HealthyHealthy · Hiring · 14% CAGR over 5y
Location
AA ENVIRONMENTAL LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides environmental and ecological consultancy services for construction, development and waste sectors. Conducts habitat and protected species surveys, contaminated land investigation and…
Serves developers, construction firms, waste management operators and land regeneration clients, including organisations behind infrastructure projects from single dwellings to roads, railways,…
Financial Health
StableStable · -66% CAGR over 4y
Location
Structural Soils Limited
Trajectory
2y · 2023–NowFinancial sub-scores
Computed from 2 filingsProvides ground investigation and geotechnical consultancy services, including site drilling, soil and rock logging, contaminated land assessment, in‑situ testing and monitoring, and laboratory…
Serves B2B and some private clients needing ground investigation and geotechnical services, including buyers in transport, nuclear, renewables, water, rail, environment, property and construction,…
Financial Health
WeakWeak · 3% CAGR over 1y
Location
RCD LOCKINGE LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides laboratory analysis and consultancy focused on tritium and carbon‑14 isotopes, including measurement and interpretation of radiocarbon and tritium levels in environmental, water, and…
Financial Health
StrongStrong · Growing, Hiring · 3% CAGR over 4y
Location
Humberside Materials Laboratory Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides independent materials and soils testing, laboratory analysis, and site investigation services. Conducts testing of construction materials, investigates product or workmanship issues, and…
Serves construction and materials-sector buyers, including suppliers, contractors, developers, architects, consultants and end customers involved in product quality, specification compliance,…
Financial Health
HealthyHealthy · Hiring · 8% CAGR over 4y
Location
DUSTSCAN LIMITED
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides environmental consultancy services focused on dust and air quality. Conducts dust and odour monitoring, air quality and planning assessments, dispersion modelling, occupational exposure and…
Serves B2B and public sector clients running development and operational projects, including construction, minerals, waste, infrastructure, utilities, transport and industrial sites, plus councils…
Financial Health
HealthyHealthy · Hiring · 12% CAGR over 2y
Location
Allium Environmental Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides asbestos surveys, sampling, analysis and management services, including remediation support and training. Also conducts legionella risk assessment and testing and lead paint testing for…
Serves businesses, homeowners and public-sector organisations across the UK, including defence, education, housing, industrial, healthcare, construction, marine, retail, utilities, charities and…
Financial Health
StrongStrong · Growing, Hiring · 9% CAGR over 4y
Location
AQUACERT LTD
Trajectory
5y · 2022–NowFinancial sub-scores
Computed from 5 filingsProvides water sampling and laboratory testing services for Legionella and other microbiological contaminants. Supplies mail‑in testing kits for drinking water, pools, spas, dental water lines and…
Serves UK businesses and public-sector organisations responsible for workplace water systems, including healthcare providers, care homes, schools, universities, offices, retail and industrial sites,…
Financial Health
StableStable · 0% CAGR over 4y
Location
THE HAZARD MANAGEMENT & ENVIRONMENTAL SERVICES LABORATORIES LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides asbestos surveying, sampling and laboratory analysis to identify asbestos-containing materials. Offers air testing, asbestos management consultancy and training, plus legionella monitoring…
Serves public-sector and institutional clients across the UK, including schools, universities, hospitals, local authorities and housing associations responsible for property compliance and estate…
Financial Health
StableStable · -66% CAGR over 4y
Location
Environmental Essentials (UK) Limited
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides environmental safety and compliance services for buildings, including asbestos testing, inspection and management, water hygiene and treatment, air hygiene and fire protection, occupational…
Serves B2B and public-sector organisations responsible for built environments, including property owners, facilities managers, contractors and estate teams managing safety compliance across UK sites.
Financial Health
StableStable · Hiring · 14% CAGR over 2y
Location
Not One Iota Ltd
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides asbestos surveying, bulk analysis and air monitoring services, alongside Legionella risk assessments, water sampling and system monitoring. Also delivers indoor air quality testing, RPE…
Serves public and private sector organisations across the UK and Ireland, including government bodies, asbestos contractors, facilities providers, and local, national and multinational businesses…
Financial Health
WeakWeak · -11% CAGR over 4y
Location
PRECISION MARINE SURVEY LIMITED
Trajectory
3y · 2022–NowFinancial sub-scores
Computed from 3 filingsProvides marine environmental consultancy and survey services, including intertidal and subtidal ecological surveys, benthic and fisheries assessments, habitat mapping, water quality monitoring and…
Serves B2B and public-sector buyers involved in estuarine, coastal and offshore marine development, marine conservation, and commercial and recreational fisheries, including developers, fisheries…
Financial Health
HealthyHealthy · 0% CAGR over 2y
Location
Innovative Environmental Services Ltd.
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides environmental testing and research services for chemical and agrochemical products, including efficacy studies, environmental fate and metabolism analysis, aquatic and terrestrial…
Serves agrochemical, chemical and life science businesses, particularly R&D, product stewardship and regulatory affairs teams commissioning environmental and ecotoxicology studies.
Financial Health
HealthyHealthy · Growing · 0% CAGR over 2y
Location
WATSTECH LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides environmental science and engineering consultancy focused on water and wastewater treatment. Conducts laboratory analysis, process evaluation and development, independent technology…
Serves B2B organisations involved in water and wastewater treatment, including technology developers, plant operators and environmental engineering teams needing independent evaluation and process…
Financial Health
StrongStrong · Hiring · 9% CAGR over 4y
Location
AIR QUALITY CONSULTANTS LIMITED
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsProvides environmental consultancy focused on air quality, odour and dust. Conducts monitoring, modelling and impact assessments for development projects, infrastructure and industry, and advises…
Serves planners and developers, local authorities, central government agencies, industrial operators and infrastructure promoters in the UK and overseas, across residential, mixed-use, road, airport…
Financial Health
StrongStrong · Growing, Hiring · 9% CAGR over 3y
Location
ACQUIESCE ENVIRONMENTAL COMPLIANCE LTD
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides legionella control and water hygiene services including risk assessments, water monitoring, cleaning and disinfection, chlorination, remedial works, UKAS-accredited water sampling, RPZ valve…
Serves UK businesses, landlords and property operators across leisure, education, commercial, industrial, residential and healthcare sectors that need water hygiene and legionella compliance support.
Financial Health
StrongStrong · Growing, Hiring · 4% CAGR over 4y
Location
TWEEDIE EVANS CONSULTING LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides environmental and geotechnical consultancy services for development projects, including contaminated land assessments, site investigations, ground engineering studies, waste testing and…
Serves UK property developers, construction and engineering teams, landowners, waste operators and public-sector bodies involved in development sites, brownfield redevelopment, infrastructure, parks…
Financial Health
StableStable · Hiring · 2% CAGR over 4y
Location
Ground And Environmental Services Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides geo-environmental consultancy and ground investigation services, including site assessments, fieldwork, soil and groundwater testing, environmental risk evaluation, and design of ground…
Serves UK clients involved in land acquisition and property development, including organisations needing geo-environmental risk input before site purchase, development design or remediation decisions.
Financial Health
HealthyHealthy · -5% CAGR over 4y
Location
Lab (UK) Limited
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsProvides asbestos consultancy services including UKAS‑accredited asbestos surveys, bulk sample testing, and air monitoring. Also offers advice and management support for asbestos removal and…
Serves businesses, landlords, property managers and contractors responsible for asbestos compliance, with a focus on commercial and industrial property owners and occupiers across the UK.
Financial Health
StableStable · Hiring · 9% CAGR over 3y
Location
ASHDOWN SITE INVESTIGATION LIMITED
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides geotechnical and environmental consultancy services including ground investigation, soil and groundwater sampling, laboratory testing, desk studies, soakage testing, waste soil…
Serves construction companies, property developers, engineers and site purchasers needing geotechnical, environmental and contaminated-land evidence for planning, warrantor, regulator and design…
Financial Health
DistressedDistressed · -2% CAGR over 2y
Location
Exploration & Testing Associates Limited
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides ground investigation and testing services for construction and environmental projects, including in situ testing and monitoring, geotechnical and environmental testing, and laboratory-based…
Serves B2B clients in construction, civil engineering, development and infrastructure projects that need ground investigation or materials testing support.
Financial Health
StableStable · -2% CAGR over 2y
Location
Environtec Limited
Trajectory
2y · 2022–NowFinancial sub-scores
Computed from 2 filingsProvides asbestos consultancy, surveying, air monitoring and laboratory analysis, including management of asbestos‑contaminated land. Also delivers water hygiene and legionella risk assessments, fire…
Serves UK organisations responsible for managing buildings, including property owners, landlords, housing providers, facilities managers and employers, with some services also available to homeowners.
Financial Health
StableStable · Profitable · -4% CAGR over 1y
Location
LITHOS CONSULTING LIMITED
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides geoenvironmental consultancy services including site investigations, geotechnical assessments, land contamination studies, remediation planning, environmental monitoring, and construction…
Serves B2B and public sector clients including residential and commercial property developers, landowners, local authorities, banks, national housebuilders and UK plcs involved in construction,…
Financial Health
HealthyHealthy · Hiring · 7% CAGR over 4y
Location
MCLORINAN CONSULTING LIMITED
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsProvides environmental consultancy services including contaminated land assessment, hydrogeology, waste management support, environmental impact assessments, air, noise and odour studies, flood risk…
Serves businesses, developers, waste operators and other organisations across Ireland and the UK with environmental compliance, planning, land, ecology and risk-related requirements.
Financial Health
StrongStrong · Growing, Hiring · 18% CAGR over 3y
Location
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How UK environmental lab companies work and how to sell to them
What they do
Environmental labs usually earn revenue through a mix of per-sample analysis, field attendance fees, monitoring programmes and project reports. Pricing tends to be built from sample volumes, analyte suites, method complexity, turnaround time, site access requirements and the level of interpretive reporting required. Repeat work often sits under framework agreements or retained schedules for water, soil, air and emissions testing, while contaminated-land or infrastructure work is more project-led. The service shape is operational rather than advisory: field technicians collect samples, laboratories run accredited methods, quality teams hold the audit trail, and clients pay for defensible evidence they can use in permits, investigations or statutory returns.
Who they sell to
Most buyers are industrial operators, utilities, infrastructure contractors, environmental consultants, local authorities and other public bodies with reporting or risk-management obligations. The first technical conversation often sits with an environmental manager, EHS lead, plant manager, project manager or consultant, then moves to procurement when repeat volumes, insurance, health-and-safety requirements and approved-supplier status matter. Smaller jobs can be placed by purchase order after a method check, but multi-site monitoring and public-sector work tend to involve framework competition, method statements, accreditation evidence and service-level negotiation. Sales cycles are usually shorter when the trigger is a permit deadline or incident response, and longer when buyers are replacing an incumbent lab.
What they buy
Environmental lab firms tend to spend on systems that protect traceability, scheduling and margin. Relevant categories include laboratory information management, sample registration, chain-of-custody tracking, quality management, document control, calibration records, field-service scheduling, route planning and customer reporting portals. Commercial teams may also need CRM, tender management, quoting, billing and contract-renewal tools, especially where recurring monitoring sits beside ad hoc project work. Outside software, common needs include analytical equipment servicing, courier and logistics support, laboratory consumables, recruitment for chemists and field technicians, health-and-safety training, insurance, accounting, legal support, cloud hosting, cyber security and managed IT.
Why and how to sell to them
Buying intent often appears when labs win a monitoring framework, add a test method, expand field coverage, move premises, recruit senior quality or operations staff, or face customer audits. Margin pressure is a useful angle because each missed sample, retest, courier delay or manual report revision can erode profit on work that already carries fixed technical costs. Outbound messaging tends to land better when it links to auditability, turnaround time, utilisation, accreditation evidence, customer retention or procurement readiness. Generic sustainability language is less persuasive; these buyers usually respond to proof that a supplier can reduce operational friction without weakening evidential control.
How this list is built
Data sources
This list is built from UK Companies House filings, XBRL accounts data, and semantic analysis of each company's public website. Revenue and headcount figures come from the most recent filed accounts; where the company has not filed, values are estimated using a model trained on filed history and peer benchmarks and are labelled as estimates.
Classification
Rather than relying solely on SIC codes, Firmbase classifies each company semantically: the company's website is crawled, an AI model reads what the company actually sells, and the company is placed into the relevant industry and subsectors. SIC codes are used as one signal but not the only one. This means a company that registered under a generic SIC code but pivoted into (for example) fintech is correctly identified as fintech, not as its original SIC category.
Freshness
The underlying company data is refreshed from Companies House continuously; filings appear in the list within days of submission. The curated list ordering is regenerated when the underlying data moves meaningfully (company count changes by more than 5%, a new company enters the top-ranked segment, or the filed-revenue numbers for the top firms change). You can see the last-updated timestamp near the top of the page.
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