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TIC Companies in Leicester: 69 Active Firms (2026)
Testing, inspection and certification companies verify products, systems and processes for clients across Leicester's metro economy.
Buying centres in Leicester-area TIC tend to sit with quality, operations, engineering and compliance teams rather than central software procurement. Customers are mainly manufacturers, construction businesses, engineering firms, logistics operators and regulated product suppliers that need independent evidence for clients, insurers, buyers or public authorities. Engagements look practical and document-heavy: calibration jobs, site inspections, product tests, supplier audits and certificate renewals, often delivered through specialist technical staff and formal quality procedures. The commercial centre of gravity is mid-market, with small expert teams alongside larger multi-discipline operators.
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Leicester has 69 active trading TIC companies, a compact local cohort that still spans laboratory testing, site inspection, calibration and audit-led work. 6 have reported turnover above £5M, while 11 were incorporated since 2022, so the group mixes established technical-services operators with newer conformity-assessment entrants. Reported employment totals 565 people across 58 firms, which points to a specialist labour base rather than a high-volume office-services cluster. The local fit is clearest where Leicester’s manufacturing, construction and logistics buyers need repeatable evidence for supply-chain acceptance.
Conformity assessment gives this market a regulated edge, even when the end customer is a private-sector buyer. GOV.UK describes accreditation as “checking the checkers”: UKAS is the sole UK National Accreditation Body, and government policy directs UK organisations seeking accreditation through UKAS. Product work can also fall under UKCA and CE conformity regimes, with sector rules determining when independent assessment and marking are required. OPSS guidance places appointment of Approved Bodies for Great Britain and UK Notified Bodies for Northern Ireland with the Secretary of State, with listings on the UK Market Conformity Assessment Bodies database.
Local demand appears tied to sectors that cannot rely on self-declaration alone: engineered products, construction sites, logistics facilities and regulated supply chains. Accreditation and appointment processes tend to favour firms that can keep audit trails, trained technical staff and repeatable procedures in place, which may make very small entrants slower to scale. Consolidation has been a plausible route for owners wanting broader scopes or geographic cover, while newer firms are likely to stay focused on narrow testing, inspection or calibration niches until they can prove repeat work and assessor credibility.
69
Active firms
2026
6
Above £5M
turnover band
11
Since 2022
Leicester incorporations
Key facts
About 8% of the trading cohort reports turnover above £5M (6 of 69 firms) — the rest sits below that revenue band.
15% of the cohort was incorporated since 2022 (11 firms), so a sizeable share is in its first few filing cycles.
Accreditation is the route government uses to establish competence among conformity assessment bodies, with third-party accreditation described as “checking the checkers”.
UKAS is the sole UK National Accreditation Body under the Accreditation Regulations 2009, and UK policy recognises UKAS accreditation for UK-operating organisations.
UKCA and CE regimes cover more than 20 product types, with sector rules determining whether third-party assessment and marking are required.
Across the UK, 6,501 TIC companies are actively trading, including 260 with turnover above £5M and 900 incorporated since 2022.
International recognition of UKAS-accredited services through European and global accreditation groups helps reduce repeat assessments and lowers technical barriers to trade.
Top Leicester TIC companies
QCI (UK) Limited
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides subcontract metrology and quality assurance services including CMM measurement, 3D laser scanning, dimensional inspection and reverse engineering. Also offers quality inspection and rework,…
Serves B2B OEMs, suppliers and manufacturing firms in aerospace, automotive, medical, power generation, rail, transportation, and oil and gas, including quality, engineering and production teams…
Financial Health
StableStable · Hiring · 18% CAGR over 5y
Location
Fire Proof Limited
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides fire safety services including fire risk assessments, supply and servicing of fire extinguishers, fire safety training, installation and inspection of fire doors, fire stopping,…
Serves B2B customers across Leicestershire, including business owners, landlords, facilities managers and other duty holders responsible for fire safety compliance in commercial premises.
Financial Health
StrongStrong · Growing, Hiring · 6% CAGR over 2y
Location
BDA SURVEYING LTD
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides asbestos surveying and management consultancy, including asbestos surveys, air monitoring and four-stage clearance testing, bulk sample analysis, and project management for asbestos removal.…
Serves public sector organisations, retailers and blue-chip businesses, particularly facilities and property teams managing asbestos compliance, asbestos registers and CAFM systems.
Financial Health
HealthyHealthy · -67% CAGR over 4y
Location
IMPACT TECHNICAL SERVICES LTD
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides dust and fume control solutions for industrial workplaces, including Local Exhaust Ventilation (LEV) testing, system design, installation, and maintenance. Supplies fume extraction and dust…
Serves UK businesses and employers in sectors handling dust, fumes, vapours or hazardous substances, including welding, woodworking, food production, chemicals, powders and painting operations.
Financial Health
HealthyHealthy · Profitable, Hiring · 7% CAGR over 2y
Location
LIFTING GEAR SUPPLIES LIMITED
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsSupplies lifting and material handling equipment and provides servicing, repair, installation and testing. Products include slings, lashings, cranes, beams, load measuring devices, height safety…
Serves UK businesses and trade buyers needing lifting and material-handling equipment, including industrial, construction, warehousing and maintenance teams, plus organisations requiring LOLER…
Financial Health
WeakWeak · 0% CAGR over 2y
Location
ENERGY SAVING ASSESSORS LIMITED
Trajectory
2y · 2024–NowFinancial sub-scores
Computed from 2 filingsFinancial Health
HealthyHealthy
Location
NORTHERN TESTHOUSE (LEICESTER) LTD
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
HealthyHealthy · 0% CAGR over 4y
Location
Williams Lisa Limited
Trajectory
3y · 2024–NowFinancial sub-scores
Computed from 3 filingsFinancial Health
DistressedDistressed
Location
GPT CONSULT (2023) LIMITED
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides authorising engineer and technical advisory services for healthcare facilities, focusing on ventilation, pressure systems and confined spaces. Offers training, capital project support and…
Serves hospitals, NHS trusts and healthcare service providers, particularly estates, engineering and facilities teams responsible for compliant healthcare environments, staff training and capital…
Financial Health
StrongStrong · 11% CAGR over 1y
Location
CLEARVIEW ENVIRONMENTAL LTD
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides asbestos surveying, inspection and management services. Conducts building surveys, bulk sample collection and laboratory analysis, asbestos air sampling and monitoring, and consultancy to…
Serves businesses, organisations, property owners, managers and homeowners needing asbestos compliance support across the UK, with coverage highlighted for Leicester, Coventry, Nottingham,…
Financial Health
WeakWeak · -66% CAGR over 4y
Location
Horiba Mira Certification
Provides automotive type approval, certification and homologation services as a UK government‑designated approval body. Assesses vehicles, components and systems for compliance with UK and…
Serves B2B automotive and mobility organisations, including vehicle OEMs, component suppliers, defence vehicle programmes, and agricultural/off-highway machinery manufacturers needing UK approval and…
Location
I Soils Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides geotechnical and geoenvironmental ground investigation services for construction and infrastructure projects, including drilling, soil and rock logging, laboratory testing, in‑situ testing,…
Serves B2B and some private clients needing ground investigation, especially organisations in transport, nuclear, renewables, water, rail, environment, property and construction, including large…
Financial Health
StableStable · 0% CAGR over 4y
Location
BEAMEX LTD
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsSupplies calibration equipment including multifunction calibrators, pressure and temperature calibration devices, and calibration management software. Also provides calibration, repair, training and…
Serves B2B customers in regulated process industries, including pharmaceutical, chemical, power generation, oil and gas, food and beverage, water and wastewater, plus calibration service companies.
Financial Health
HealthyHealthy · Hiring · 6% CAGR over 4y
Location
Taylor Instrument Services Limited
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsProvides calibration services for industrial, pharmaceutical and engineering equipment, including onsite calibration, temperature mapping and gauge calibration. Supplies wireless temperature…
Sells to UK businesses needing calibration and test equipment, particularly industrial and manufacturing firms, pharmaceutical and medical companies, and service engineers, contractors, and…
Financial Health
StableStable · 0% CAGR over 3y
Location
E.M.INSPECTION COMPANY LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides non-destructive testing services including magnetic particle, penetrant and visual inspection for engineering and aerospace components. Also manufactures and supplies NDT equipment and…
Serves B2B manufacturing and engineering organisations, from small firms to international groups, with emphasis on aerospace, power generation, motorsport and companies operating or setting up NDT…
Financial Health
WeakWeak · -6% CAGR over 4y
Location
R.I.N.D.T. LTD
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides non-destructive testing and engineering inspection services for metal components and welds, including magnetic particle, dye penetrant, ultrasonic and visual inspection, hardness testing,…
Serves businesses working with ferrous and non-ferrous metals, including welders, fabricators and manufacturers needing inspection and testing support, mainly in Warwickshire and surrounding areas,…
Financial Health
StableStable · -4% CAGR over 4y
Location
WEIGHING TECHNOLOGY SERVICES LIMITED
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsSupplies and services industrial weighing equipment including balances, scales and weighbridges. Provides calibration, maintenance, repair and emergency support, as well as equipment hire and custom…
Serves B2B customers across the UK and Ireland, including pharmaceuticals, chemicals, logistics, food and drink production, aggregates, manufacturing, defence and industrial equipment firms needing…
Financial Health
StableStable · 0% CAGR over 2y
Location
TOP BUILDING CONTROL LTD
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides private building control services for construction projects, including building regulations applications, site inspections, pre‑application advice, fire risk and energy assessments, water…
Serves architects, plan drawers, contractors and homeowners needing building control support for residential, retail and commercial projects across Charnwood, Leicestershire and the East Midlands.
Financial Health
StableStable · 0% CAGR over 4y
Location
Horiba Mira
Provides automotive engineering, testing and development consultancy services, including vehicle design, electrification and battery engineering, ADAS and autonomous vehicle validation, EMC and…
Serves automotive and mobility OEMs, suppliers and start-ups, plus defence, agricultural/off-highway, fleet and logistics, and water infrastructure organisations.
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
Testa Technical Services Ltd
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
StrongStrong · Hiring · 19% CAGR over 4y
Location
G&J Geoenvironmental Consultants Ltd
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides geoenvironmental and geotechnical consultancy services including Phase 1 desk studies, site investigations, contaminated land risk assessments, geotechnical ground investigations, gas and…
Serves land developers, property owners, construction contractors and regulators across the UK involved in sites with ground risk, contaminated land or geotechnical requirements.
Financial Health
WeakWeak · -9% CAGR over 2y
Location
YORK METROLOGY LIMITED
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides calibration and certification of measuring instruments and gauges traceable to national standards. Offers onsite calibration, inspection, and repair services, and supplies new gauges…
Serves businesses in aerospace and precision engineering, plus other industrial firms that use gauges and measuring instruments and need calibration, inspection, certification or repair support on or…
Financial Health
StrongStrong · Growing, Hiring · 12% CAGR over 2y
Location
STRESSCRAFT LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides residual stress measurement services using the strain gauge centre hole drilling method. Installs and drills strain gauges, records strain data, and calculates stresses in metals and other…
Serves universities, research organisations, and manufacturers of aero-engines, aerospace components, turbochargers, diesel and racing engines, pressure vessels, pipelines and valve components.
Financial Health
StableStable · -68% CAGR over 4y
Location
Progressive Sports Technologies Limited
Trajectory
4y · 2023–NowFinancial sub-scores
Computed from 4 filingsProvides research, product development, testing and validation services for sports, fitness and outdoor equipment. Supports brands in developing and assessing new products through laboratory testing,…
Serves B2B sports, fitness and outdoor product brands and manufacturers, including teams developing lifestyle, protective and elite-performance equipment and apparel.
Financial Health
StableStable · -6% CAGR over 3y
Location
MWS Limited
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsDesigns and manufactures industrial weighing equipment including bench scales, floor scales, weighbridges and ATEX‑certified systems. Provides calibration, installation and maintenance services, and…
Serves B2B customers in manufacturing, logistics, laboratories and hazardous-environment industries, including petrochemical, pharmaceutical, chemical, grain handling and powder processing operations…
Financial Health
HealthyHealthy · Hiring · 4% CAGR over 3y
Location
ORB DYNAMICS LTD
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsFinancial Health
DistressedDistressed · 0% CAGR over 3y
Location
Dakro Air & Water Limited
Trajectory
2y · 2024–NowFinancial sub-scores
Computed from 2 filingsProvides Legionella risk assessments, testing and compliance services, alongside water treatment and air hygiene solutions. Conducts ductwork cleaning, fire damper testing, air quality monitoring,…
Serves businesses and facilities managers responsible for commercial and industrial buildings, including sites with water systems, cooling towers, boilers, ductwork, fire dampers and swimming pools.
Financial Health
StrongStrong · Growing · 8% CAGR over 1y
Location
Obsequio
Provides compliance services including fire safety system maintenance, water hygiene and Legionella control, integrated security systems, asbestos management, energy monitoring, and environmental…
Serves public and private sector organisations across the UK, including operators, developers, estates teams and facilities managers in social housing, student accommodation, healthcare, education,…
Location
JUAH RUTHERFORD LTD
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
WeakWeak · 0% CAGR over 4y
Location
MGR Fire Safety Consultants Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides fire safety consultancy for buildings, including fire risk assessments, building fire strategies, fire door inspections, and fire compartmentation surveys. Also produces floor and zone plans…
Serves building owners, property and facilities managers, estates teams and duty holders responsible for fire and building safety across single sites or multi-building estates nationwide.
Financial Health
StrongStrong · Growing, Hiring · 32% CAGR over 4y
Location
KAYDEESAYFA LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides building compliance testing, maintenance, and specialist cleaning services. Conducts inspections and testing of height safety systems, access equipment, lightning protection, and abseiling…
Serves B2B property owners, facilities teams, construction contractors and campus/building managers across the UK and Channel Islands, particularly those responsible for compliant commercial sites…
Financial Health
StableStable · -61% CAGR over 4y
Location
Michael A Fox Associates Ltd
Trajectory
3y · 2022–NowFinancial sub-scores
Computed from 3 filingsProvides fire safety engineering consultancy for new and existing buildings, including EWS1 certification support, PAS9980 external wall risk assessments, fire risk evaluation, building surveys and…
Serves property developers, building owners, landlords and asset managers involved with new developments and existing buildings, especially high-rise residential blocks and external wall safety cases.
Financial Health
HealthyHealthy · Hiring · 10% CAGR over 2y
Location
G E S (LEICESTER) LIMITED
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides legionella and water hygiene management services, including risk assessments, water monitoring, compliance management programmes, tank cleaning and disinfection, and plumbing and remedial…
Serves businesses, facilities managers and public-sector organisations responsible for workplace and building water systems, particularly those needing legionella and water hygiene compliance support.
Financial Health
WeakWeak · -5% CAGR over 2y
Location
TROXLER ELECTRONIC LABS LIMITED
Trajectory
1y · 2024–NowManufactures and supplies testing and measurement equipment for road construction and geotechnical applications, including nuclear density gauges, asphalt testing ovens and related instruments.…
Serves B2B customers in geotechnical, highway and road construction sectors, including construction materials testing firms, contractors, labs and distributors needing asphalt and soil density…
Financial Health
Insufficient historyInsufficient history
Location
G T O Solutions Ltd
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
HealthyHealthy · 0% CAGR over 4y
Location
CB Geoservices Limited
Trajectory
5y · 2019–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
HealthyHealthy · 0% CAGR over 5y
Location
DSF Engineering Design Ltd
Trajectory
1y · 2025–NowFinancial Health
Insufficient historyInsufficient history
Location
RAILWAY TECHNOLOGY CONSULTANTS LTD
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
DistressedDistressed · -73% CAGR over 4y
Location
AMUSEMENT ENGINEERING LTD
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
StrongStrong
Location
TECNIKA LIMITED
Trajectory
3y · 2022–NowFinancial sub-scores
Computed from 3 filingsProvides independent inspection, technical monitoring, and quality assurance audits for energy efficiency projects. Inspects insulation, heating, and retrofit installations and conducts…
Serves utility companies, local authorities, managing agents and installation companies in the UK energy efficiency sector, particularly organisations responsible for insulation, heating and retrofit…
Financial Health
StrongStrong · Growing, Hiring · 17% CAGR over 2y
Location
The 3D Measurement Company Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsSupplies 3D scanning equipment and metrology systems and provides 3D measurement services for manufacturing and engineering. Offers portable and automated 3D scanners, quality inspection, reverse…
Serves UK manufacturers and engineering teams, especially in automotive, aerospace and power generation. Targets quality control, inspection, product development and reverse-engineering functions…
Financial Health
HealthyHealthy · Hiring · 6% CAGR over 4y
Location
EFFICIENCY CONTROL SERVICES LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
StableStable · 0% CAGR over 4y
Location
LYON CHASE LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
WeakWeak · 0% CAGR over 4y
Location
MALLINSON CONSULTING LIMITED
Trajectory
3y · 2022–NowFinancial sub-scores
Computed from 3 filingsFinancial Health
DistressedDistressed · 0% CAGR over 2y
Location
LEV ENGINEERING LIMITED
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsDesigns, supplies and installs local exhaust ventilation (LEV) systems including dust and fume extraction, evaporative cooling and general ventilation. Provides LEV testing, servicing and mechanical…
Serves industrial businesses in welding and fabrication, metalworking, woodworking, aerospace, automotive, battery R&D/production, construction materials and paint spraying, including firms with LEV…
Financial Health
StrongStrong · Growing, Hiring · 8% CAGR over 3y
Location
Tribodens Ltd
Trajectory
2y · 2024–NowFinancial sub-scores
Computed from 2 filingsFinancial Health
DistressedDistressed
Location
Bradgate Surveying Limited
Trajectory
3y · 2022–NowFinancial sub-scores
Computed from 3 filingsProvides building surveying and subsidence investigation services for insurers and property professionals, including site surveys, foundation and drainage investigations, soil analysis, structural…
Serves insurance-sector clients, loss adjusters, consulting engineers, local authorities and property owners needing building defect or subsidence surveying support across the UK.
Financial Health
StrongStrong · Hiring · 20% CAGR over 2y
Location
Grosvenor Homes AD Limited
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides engineering and project management services for regulated manufacturing industries, including pharmaceuticals and medical devices. Services include equipment and facility engineering,…
Serves B2B clients in regulated industries, including radiopharmaceutical, pharmaceutical, food and beverage, medical device, nutraceutical, and health and beauty manufacturers.
Financial Health
DistressedDistressed · 0% CAGR over 2y
Location
STME TECHNICAL SERVICES LIMITED
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides rail signalling engineering services, including signal maintenance testing (SMTH) on signalling equipment used on the rail network. Supplies signalling engineers, technicians and installers,…
Serves UK rail industry clients, including rail infrastructure operators, contractors and project teams needing competent signalling engineering resource across maintenance, testing and project…
Financial Health
StableStable · Hiring · 41% CAGR over 2y
Location
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How Leicester TIC companies work and how to sell to them
What they do
Leicester-area TIC firms earn revenue from fee-based technical services rather than product resale. Pricing is usually built around per-test charges, inspection day rates, calibration certificates, audit fees and recurring certification or surveillance work. Larger customers may bundle repeat testing, multi-site inspection or supplier-audit programmes into annual agreements, while smaller buyers tend to purchase job by job when a client, insurer or regulator asks for evidence. The service shape is labour-intensive and document-led: trained assessors, controlled procedures, traceable instruments, formal reports and certificates that customers can attach to tenders, technical files, warranty claims or supply-chain approvals.
Who they sell to
Most Leicester TIC providers sell into manufacturing, construction, engineering, logistics and regulated product supply chains, with buyers typically sitting outside general procurement at first contact. Quality managers, operations directors, engineering leads and compliance teams often define the technical requirement; finance and procurement then become involved when repeat spend, framework terms or insurance conditions are in play. Sales cycles tend to be short for urgent product tests or one-off inspections, but longer where a buyer needs supplier approval, accreditation scope checks, site access or an RFP process. Direct sales and referrals matter, because buyers usually want evidence of technical fit before price comparison.
What they buy
Most TIC firms tend to spend on systems that protect traceability, scheduling and document control. Relevant categories include quality management software, audit management, laboratory information management, calibration scheduling, field-service workflow, certificate generation, CRM, quoting, billing and job-costing. Cyber security, cloud hosting, backup, device management and access control can matter where reports and customer evidence are stored digitally. Specialist recruitment, technical training, insurance, legal advice, accounting support and marketing services also fit the operating model. Field teams may also buy vehicles, instruments, protective equipment and facilities services, but software suppliers usually need to tie their pitch to audit readiness, utilisation or faster report turnaround.
Why and how to sell to them
TIC buyers tend to evaluate vendors when paperwork volume starts to slow delivery, when an accreditation visit is approaching, when a new service scope is being added, or when repeat customers ask for shorter certificate turnaround. Other triggers include a senior operations or quality hire, a new site, a tender win, or pressure to standardise reporting across technical teams. Outbound angles work better when framed around traceability, fewer manual handovers, easier evidence retrieval and clearer margins per job. Generic productivity claims are less useful than showing how a provider can move from enquiry to inspection, test result, certificate and renewal without losing audit trail detail.
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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Frequently asked questions
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