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Plumbing And Heating Companies in Liverpool: 399 Active Firms (2026)
Plumbing and heating companies install, repair and maintain water, gas and heating systems for homes and workplaces across Liverpool.
Buying centres sit with homeowners, private landlords, main contractors, facilities managers and public-estate teams rather than a single corporate function. Work ranges from short-notice call-outs and boiler servicing to planned pipework, heating upgrades and mechanical packages inside refurbishment or maintenance programmes. Smaller operators tend to compete on response time and local coverage; mid-market service businesses are more likely to win repeat work where documentation, scheduling discipline and evidence of gas or heating competence matter. The practical buyer is often the person accountable for a functioning building, so sales cycles are usually tied to urgent faults, planned maintenance windows or contractor frameworks.
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Liverpool has 399 actively trading plumbing and heating companies in this cohort, giving the city a sizeable base of local installers, repair firms and mechanical-services contractors. Reported headcount totals 1,501 people, which points to a labour-intensive market where field capacity matters as much as corporate scale. The mix is likely to include owner-managed trades, small teams serving residential and landlord work, and a narrower band of service businesses able to cover commercial premises, public-sector sites and subcontract packages for larger construction or facilities contracts.
Gas, water and heating work sits inside a compliance-led operating context, even where the customer relationship is local and informal. Buyers tend to look for evidence that engineers are competent, insured and able to produce the right service records after installation, repair or inspection work. Commercial and public-sector customers add further process: risk assessments, access rules, emergency response expectations and documentation trails can matter as much as the quoted labour rate. That creates a market where administrative reliability is part of the service, not a back-office extra.
Liverpool’s plumbing and heating market appears likely to remain locally anchored, with demand shaped by repair cycles, property maintenance and the need to keep occupied buildings operating. Larger service businesses may keep an advantage where customers want scheduled maintenance, audit trails and coverage across mixed estates, while smaller operators can retain work through availability and customer familiarity. Consolidation tends to be practical rather than speculative: succession issues, subcontractor relationships and recurring maintenance books are more plausible drivers than venture-style scaling. Compliance pressure should keep raising the value of documentation and field-service discipline.
399
Active firms
2026
10
Above £5M
reported revenue
105
Recent incorporations
since 2022
Key facts
About 2% of the trading cohort reports turnover above £5M (10 of 399 firms) — the rest sits below that revenue band.
26% of the cohort was incorporated since 2022 (105 firms), so a sizeable share is in its first few filing cycles.
Work is split between domestic repairs, boiler and heating installations, bathroom and kitchen plumbing, and planned maintenance for workplaces.
Commercial buyers tend to screen for emergency call-out coverage, compliance paperwork, insurance evidence and subcontractor capacity.
Gas, water and heating work sits close to property compliance, so credentials and audit trails matter in procurement.
Demand is tied to housing repairs, landlord maintenance, office fit-outs and public-sector estate management across Liverpool.
Top Liverpool Plumbing And Heating companies
N.I.P.I. (Liverpool) Ltd
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides domestic heating and plumbing services including boiler installation, repair, replacement and servicing, central heating installation, bathroom and shower fitting, and general plumbing. Also…
Serves homeowners, landlords and local business clients in Liverpool and surrounding areas needing heating, gas and plumbing support.
Financial Health
DistressedDistressed · -3% CAGR over 2y
Location
FUTUREFLOW MECHANICAL SERVICES LIMITED
Trajectory
2y · 2024–NowFinancial sub-scores
Computed from 2 filingsProvides mechanical and electrical engineering services including design, installation and maintenance of plumbing, heating, gas, ventilation, air conditioning, drainage and electrical systems, as…
Serves commercial and industrial businesses, leisure operators, housing associations and domestic customers in the North West, targeting property owners and managers with mechanical and electrical…
Financial Health
DistressedDistressed · Hiring · 20% CAGR over 1y
Location
OPTIMUS FACILITIES LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides mechanical and electrical building services including system design and installation. Works on heating, ventilation and air conditioning, power distribution, lighting, fire alarms, data…
Serves public-sector and commercial building clients across the North West UK, including government buildings, universities, schools, colleges, hospitals, medical centres and cultural venues.
Financial Health
StableStable · -41% CAGR over 4y
Location
A&B Engineering
Provides mechanical and electrical building services including design, installation and commissioning of HVAC, plumbing, gas, fire protection, ventilation and renewable energy systems, along with…
Serves main contractors, developers and consultants on commercial, public sector and specialist construction projects, including healthcare, education, residential, retail, hospitality and industrial…
Location
D P F Plumbing & Heating Ltd
Trajectory
3y · 2022–NowFinancial sub-scores
Computed from 3 filingsProvides plumbing, heating and gas engineering services for residential properties, including installation, maintenance and repairs. Also offers bathroom design and full bathroom installation,…
Serves residential and small commercial customers in Liverpool and Merseyside seeking plumbing, heating, gas and bathroom installation services.
Financial Health
StrongStrong · Growing, Hiring · 15% CAGR over 2y
Location
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides heating engineering services including boiler installation and repair, central heating system installation and maintenance, 24-hour emergency callouts, landlord gas safety checks, and power…
Serves homeowners, residents and landlords in Liverpool and surrounding Merseyside with domestic heating engineering needs, including emergency callouts and rental property gas safety requirements.
Financial Health
StrongStrong · Hiring · 19% CAGR over 4y
Location
CPL Management Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides facilities management and building maintenance services for commercial properties, including HVAC servicing, electrical work, plumbing, general repairs, and health and safety compliance…
Serves businesses of all sizes with commercial premises, from one-off repair buyers to large retainer clients, across retail, logistics, healthcare, commercial real estate, transportation and…
Financial Health
StableStable · 0% CAGR over 4y
Location
A. & B. ENGINEERING (MECHANICAL SERVICE DIVISION) LIMITED
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides mechanical and electrical engineering services including design and installation of HVAC, plumbing, gas distribution, renewable energy systems, building management controls, and fire…
Serves UK main contractors, developers, consultants and public sector clients on healthcare, education, residential, commercial, retail, hospitality and industrial construction projects.
Financial Health
HealthyHealthy · Profitable, Hiring · 15% CAGR over 2y
Location
Mayfair Contractors Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides plumbing, heating and general building services, including boiler replacements, central heating installation, gas work, landlord gas safety certificates, bathroom and kitchen installations,…
Serves homeowners, landlords and property owners in Liverpool needing gas-safe heating, plumbing, bathroom and general building work.
Financial Health
StableStable · -5% CAGR over 4y
Location
Now Plumbing Ltd
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsFinancial Health
DistressedDistressed · 0% CAGR over 3y
Location
Bon Plumbing Services Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides domestic plumbing and heating services, including installation and repair of plumbing systems, central heating systems, bathroom and ensuite installations, shower fitting, and wall and floor…
Serves domestic customers and property owners in Wirral, Merseyside and Liverpool seeking local plumbing, heating, bathroom, shower and tiling support, including urgent call-outs.
Financial Health
StrongStrong · Growing, Hiring · 9% CAGR over 4y
Location
Winrow Building Services Limited
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsDesigns, supplies and installs commercial and industrial heating systems, including warm air heating and hot water systems. Provides site surveys, bespoke system design, appliance servicing, and…
Serves businesses of all sizes needing commercial or industrial heating, including factories, warehouses, workshops, garages, hotels, campsites, retail/showrooms, sports halls and indoor…
Financial Health
DistressedDistressed · 0% CAGR over 2y
Location
R H (Nw) Limited
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides drainage services for residential and commercial properties, including drain unblocking, CCTV surveys, high‑pressure jetting, drain repairs, excavation, septic tank work, and installation…
Sells to homeowners, renters, businesses and commercial property operators needing drainage services. Also serves housing associations and insurance-related clients across North West England and…
Financial Health
StableStable · -4% CAGR over 2y
Location
Select Air Services Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsDesigns, installs and maintains air conditioning, heating, refrigeration and ventilation systems. Provides equipment selection, project management, servicing and maintenance for domestic, commercial,…
Serves domestic customers and commercial, industrial, public and private sector organisations across the UK, including hotel chains, football clubs, office buildings, commercial centres, hospitals…
Financial Health
StableStable · 0% CAGR over 4y
Location
MAGEE GAS SERVICES LTD
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
WeakWeak · 0% CAGR over 4y
Location
Pro Gas Merseyside Limited
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsFinancial Health
StableStable · 0% CAGR over 3y
Location
Artisan Heating & Plumbing (Northwest) Ltd
Trajectory
1y · 2025–NowFinancial Health
Insufficient historyInsufficient history
Location
Senate Group
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides mechanical and electrical engineering services, including installation and upgrade of building systems such as heating, power and related infrastructure for projects in education,…
Serves main contractors and organisations in education, healthcare, housing, retail, leisure and manufacturing, including schools, colleges, NHS healthcare facilities and commercial operators.
Financial Health
StrongStrong · Hiring · 7% CAGR over 5y
Location
Merseyside Drainage Solutions Ltd
Trajectory
4y · 2021–NowFinancial sub-scores
Computed from 4 filingsProvides domestic and commercial drainage services including drain unblocking, CCTV drain surveys, pipe and drain repairs, high‑pressure water jetting, outdoor drain clearance, emergency callouts,…
Serves domestic and commercial customers needing drainage support, including homeowners, landlords and local businesses in Merseyside, Liverpool and Bootle.
Financial Health
WeakWeak · Hiring · 36% CAGR over 3y
Location
A&B ENGINEERING MEP LIMITED
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides mechanical, electrical and plumbing (MEP) engineering services for construction projects, including system design, 3D/BIM modelling, and installation of HVAC, air conditioning, heating,…
Serves UK main contractors, developers, consultants and public sector clients involved in commercial, healthcare, education, residential, retail, hospitality and industrial construction projects.
Financial Health
StrongStrong
Location
Ultra Air Solutions Ltd
Trajectory
1y · 2024–NowFinancial Health
Insufficient historyInsufficient history
Location
LIVERPOOL HEATING LTD
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsFinancial Health
StableStable
Location
HYDRACLEAN HOLDINGS 2007 LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides water hygiene and Legionella compliance services, including risk assessments, water treatment programmes, and monitoring of water systems. Also installs and maintains plumbing and water…
Serves UK and Northern Ireland organisations managing facilities in health, leisure, education, housing and social care, including public sector and commercial property operators needing water…
Financial Health
DistressedDistressed · -68% CAGR over 4y
Location
Clubmoor Builders Ltd
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
DistressedDistressed · -24% CAGR over 4y
Location
Economic Heating Solutions UK Ltd
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsArranges boiler replacement and first‑time central heating installations through government ECO grant schemes. Assesses eligibility and installs A‑rated gas or oil boilers for households receiving…
Serves UK homeowners, landlords and tenants, especially pensioners, disabled people, over-60s and benefit recipients, who are eligible for government boiler or first-time central heating support,…
Financial Health
StrongStrong · Growing · 0% CAGR over 3y
Location
Cathedral Building Services Limited
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsProvides building services installation and maintenance including fire detection and suppression systems, security systems, air conditioning, ventilation, heating, plumbing, electrical services,…
Serves schools and other education providers, industrial sites and commercial organisations with premises requiring compliant facilities support, from small clients needing occasional visits to…
Financial Health
StableStable · -7% CAGR over 3y
Location
ECO4 HUB LTD
Trajectory
2y · 2024–NowFinancial sub-scores
Computed from 2 filingsFacilitates access to the UK ECO4 government grant scheme, arranging energy‑efficiency upgrades for residential properties. Services include installation of insulation, air source heat pumps, solar…
Sells to UK homeowners and householders seeking free or subsidised home energy-efficiency upgrades through the ECO4 grant scheme, particularly people checking eligibility for government-funded…
Financial Health
DistressedDistressed · 0% CAGR over 1y
Location
HAMPSON PIPELINE SERVICES LIMITED
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
StrongStrong
Location
RSD Hygienics Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
DistressedDistressed · 0% CAGR over 4y
Location
Warmer Home Grants Ltd
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsArranges and installs residential energy‑efficiency and heating upgrades under UK grant schemes, including first‑time central heating systems, air source heat pumps, solar panels, and loft or solid…
Serves UK homeowners, tenants and landlords seeking privately funded or grant-funded domestic energy improvements, particularly households eligible for ECO4 or GBIS support.
Financial Health
StrongStrong
Location
AUGER SITE INVESTIGATIONS LIMITED
Trajectory
2y · 2024–NowFinancial sub-scores
Computed from 2 filingsProvides investigation and repair services for underground drainage and water mains, including leak detection, off‑mains systems, and subsidence site investigations. Produces technical reports and…
Serves UK insurance companies, their policyholders and homeowners, primarily for residential property claims involving drainage, water mains, off-mains drainage and subsidence issues.
Financial Health
HealthyHealthy · Growing · 8% CAGR over 1y
Location
ZIOM CREATIONS LTD
Trajectory
2y · 2023–NowFinancial sub-scores
Computed from 2 filingsProvides building maintenance, renovation and extension services for residential properties, including kitchen and bathroom refurbishments. Installs energy efficiency measures such as external wall…
Serves residential property owners and households, including those eligible for government Eco-4 funding, needing building upkeep, renovations, energy-efficiency upgrades and cleaning support.
Financial Health
DistressedDistressed · 0% CAGR over 1y
Location
SPECIALIST HVAC SOLUTIONS LTD
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
StrongStrong · Hiring · 55% CAGR over 4y
Location
ECO HEATING SERVICES LTD
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
HealthyHealthy · Hiring · 19% CAGR over 4y
Location
Bathroom Centre Liverpool Limited
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
HealthyHealthy
Location
HIGRADE DEVELOPMENTS LTD
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides building and construction services for commercial and domestic projects, including renovations, refurbishments, new builds, and property conversions. Offers design consultancy and project…
Serves commercial clients and domestic homeowners in Liverpool, including businesses, property owners and developers commissioning refurbishments, conversions, new builds and managed construction…
Financial Health
StrongStrong · Growing · 0% CAGR over 4y
Location
Content Renewables Limited
Trajectory
3y · 2022–NowFinancial sub-scores
Computed from 3 filingsProvides home energy efficiency improvements including insulation installation and extraction, boiler replacements, air source heat pumps, solar panels and batteries, and first-time central heating.…
Serves UK homeowners, private residents, landlords and social housing tenants, alongside social housing providers, local authorities, energy suppliers, principal contractors and housebuilders.
Financial Health
HealthyHealthy · -40% CAGR over 2y
Location
WARMER ENERGY SOLUTIONS LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsInstalls residential renewable energy and energy‑efficiency systems, including solar photovoltaic panels, air source heat pumps and insulation. Provides system surveys, design and installation…
Serves UK homeowners and residential property occupants, including private customers and households reached through Warm Homes, social housing and local grant schemes.
Financial Health
StrongStrong · Growing, Hiring · 27% CAGR over 4y
Location
SSB Renewables Ltd
Trajectory
2y · 2023–NowFinancial sub-scores
Computed from 2 filingsInstalls renewable energy and energy‑efficiency systems in residential properties, including air source heat pumps, solar photovoltaic panels, and internal wall insulation. Provides retrofit services…
Serves homeowners and domestic property occupants seeking renewable energy and insulation improvements, including households eligible for ECO4 grant support.
Financial Health
StableStable · 0% CAGR over 1y
Location
Zenith Eco Solutions Ltd
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsInstalls domestic energy‑efficiency and renewable heating systems, including boilers and insulation, and manages upgrades funded through government ECO4 grant schemes. Provides home energy…
Sells to UK homeowners seeking home energy upgrades, especially households eligible for government-funded ECO4 grants and properties with low EPC ratings. Targets residential customers wanting…
Financial Health
StrongStrong · Growing, Hiring · 51% CAGR over 4y
Location
MX PLUMBING & HEATING LIMITED
Trajectory
3y · 2022–NowFinancial sub-scores
Computed from 3 filingsProvides plumbing and heating installation, repair and maintenance services for domestic, commercial and industrial properties, including boiler installation and servicing, gas safety checks, hot and…
Serves domestic homeowners and landlords, commercial and industrial clients, construction companies and local authorities, including public buildings, schools and health authorities, across…
Financial Health
HealthyHealthy · 0% CAGR over 2y
Location
Whb Mechanical Ltd
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides mechanical building services including installation of heating systems, plumbing, hot and cold water services, air conditioning and ventilation, gas and compressed air systems, along with…
Serves commercial property developers, facilities managers, education institutions, care homes and other organisations requiring mechanical building services for new-build, refurbishment or…
Financial Health
WeakWeak · -5% CAGR over 4y
Location
Catalyst Energy Ltd
Trajectory
3y · 2022–NowFinancial sub-scores
Computed from 3 filingsProvides domestic and commercial gas and plumbing services, including boiler installation, repair and servicing, central heating installation, gas safety inspections, energy performance certificates,…
Serves homeowners and commercial clients in Liverpool and the North West, including landlords, estate agents, insurance companies and construction firms needing gas, plumbing, heating and maintenance…
Financial Health
WeakWeak · -12% CAGR over 2y
Location
Complheat Heating & Plumbing Ltd
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides installation, repair and maintenance of boilers and central heating systems for domestic and corporate properties. Services include boiler replacement, system upgrades, power flushing,…
Serves housing associations, local authorities, facilities management companies and domestic homeowners across the North West, including Liverpool, North Wales, Manchester, Cheshire and Lancashire.
Financial Health
DistressedDistressed · -8% CAGR over 4y
Location
JF Plumbing and Heating Services Limited
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides plumbing and heating services including boiler repairs, central heating maintenance, gas safety checks, and installation of bathrooms, kitchens and wet rooms. Also offers emergency callouts…
Sells to homeowners and business customers needing plumbing and heating support, including offices, factories and retail sites, across Wirral, Merseyside, Liverpool and Cheshire.
Financial Health
HealthyHealthy · 0% CAGR over 2y
Location
Managed Mechanical Services Limited
Trajectory
4y · 2023–NowFinancial sub-scores
Computed from 4 filingsProvides design, installation, upgrade and maintenance of commercial mechanical building services, including air conditioning systems, heating, chillers, air handling units, pumps and plant rooms,…
Serves businesses, facilities managers and project teams responsible for commercial and industrial buildings across Liverpool, Warrington, Manchester, Leeds, Sheffield, Rotherham and the wider North…
Financial Health
HealthyHealthy · Hiring · 5% CAGR over 3y
Location
Hats Heating Ltd
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides commercial and domestic heating and plumbing services, including installation, servicing and repair of gas-fired boilers, warm air and radiant heating systems, water heaters and gas…
Serves businesses, public and community organisations, and domestic customers across North West England and North Wales, including offices, hotels, churches, schools, warehouses, residential homes,…
Financial Health
StableStable · -4% CAGR over 4y
Location
PRESTIGE PLUMBING & HEATING (NW) LIMITED
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides plumbing and heating installation services for the new build construction sector, installing domestic plumbing systems, central heating and boilers for housebuilders. Also offers boiler…
Serves B2B customers in the new-build construction sector, primarily UK housebuilders and building firms delivering residential developments on building sites across the North West of England.
Financial Health
StrongStrong · -4% CAGR over 2y
Location
MEC Merseyside Ltd
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsProvides plumbing and heating services for residential, commercial, and industrial properties. Carries out installation, maintenance, and repair of plumbing systems and mechanical services, including…
Serves homeowners, landlords, commercial premises and industrial sites in Liverpool and across Merseyside.
Financial Health
StableStable · Hiring · 26% CAGR over 3y
Location
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How Liverpool Plumbing And Heating companies work and how to sell to them
What they do
Liverpool plumbing and heating firms usually earn through a mix of labour, parts and subcontracted trade packages. Short-notice repairs are often priced as call-out charges plus time and materials, while boiler replacements, heating upgrades and pipework projects tend to be quoted as fixed scopes with staged payment points. Recurring revenue comes from servicing, inspection work, landlord obligations and planned maintenance for commercial or public-estate customers. Only a small minority trade above £5M revenue, so many operators remain cash-flow sensitive and operationally close to the tools rather than run as purely managerial service companies.
Who they sell to
Most sell into a fragmented buyer base: householders needing urgent repairs, landlords and managing agents managing compliance, contractors filling mechanical packages, and facilities or estates teams keeping buildings usable. The decision-maker is often practical rather than corporate: a property manager, site manager, contracts manager, landlord, facilities lead or procurement contact on a framework. Private residential work is commonly won through reputation, search visibility and referrals, with short buying cycles. Commercial and public-sector work tends to involve proof of competence, insurance, method statements, service records and repeatable reporting before price is seriously compared.
What they buy
Most plumbing and heating firms tend to spend on tools that reduce wasted engineer time and tighten job administration. Common categories include field-service scheduling, route planning, quoting, invoicing, job-costing, payments, accounting, customer records, document storage and compliance workflows for service certificates and risk paperwork. Operators with several engineers also buy fleet support, mobile devices, stock control, uniforms, training, recruitment, payroll support and insurance advice. Marketing spend is usually local and intent-led: search visibility, review management, referral tracking and simple landing pages tend to matter more than broad brand activity.
Why and how to sell to them
Plumbing and heating buyers tend to evaluate suppliers when admin starts constraining field capacity: missed appointments, slow quotes, poor first-time-fix rates, delayed invoicing or weak documentation after a job. Commercial triggers include hiring engineers, adding vans, winning maintenance work, taking on public-sector or facilities contracts, or moving from ad hoc repairs into planned service agreements. Outbound angles work better when they reference the operational bottleneck rather than abstract efficiency. Messages that connect faster scheduling, cleaner compliance trails, fewer invoice disputes or better utilisation to day-to-day service delivery are more credible than generic growth claims.
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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