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Cleaning Companies in Birmingham: 700+ Active Firms (2026)
Commercial cleaning companies in Birmingham provide contract cleaning, hygiene and facilities support across the city and metropolitan area.
Buying centres tend to sit with facilities, estates and operations teams, with finance and procurement becoming involved once contracts cover multiple premises or public-sector buildings. Buyers are mostly business and institutional: office managers, industrial-site operators, retail estates, healthcare settings and education estates. Engagements range from premises-specific cleaning rounds to regional service contracts with mobile teams, local supervisors and documented hygiene processes. The more relevant commercial distinction is not specialist versus generalist, but whether the provider can evidence recurring contracts, workforce scheduling and capacity to serve multiple client sites without losing control of quality.
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Birmingham has 795 actively trading commercial cleaning firms, giving the city and metropolitan area a sizeable contractor base for offices, industrial sites, retail premises and public-sector estates. Reported employment stands at 2,875 people, so the visible footprint is weighted toward labour-intensive delivery rather than asset ownership. Many firms still appear likely to be owner-managed or site-specific operators, while the revenue tail is narrower than the headcount profile might suggest. For buyers, that points to a market with plenty of local coverage, but fewer contractors able to absorb complex, multi-site mobilisation without subcontracting.
Cleaning work is usually regulated through the nature of the site rather than through a sector licence. Chemicals handling, waste procedures, health and safety duties, right-to-work checks and employment status sit around the contract, while client sectors add their own controls. Healthcare, education and public-sector work tends to require written procedures, safeguarding checks, audit trails and evidence that mobile teams can work around occupied buildings. Industrial work adds machinery, waste and shift-pattern constraints. Procurement is therefore evidence-heavy: buyers often look for service continuity, supervisor cover, documented training and response processes before price.
Birmingham’s cleaning market appears likely to remain fragmented, with a long tail of early-commercial and small local operators sitting alongside a thinner layer of regional contractors. Pricing pressure is likely to persist where office, retail and public-sector buyers treat cleaning as a tendered facilities line, while healthcare and industrial work tends to reward documented process and dependable staffing. Consolidation may be selective rather than sweeping: local density, supervisor coverage and workforce retention matter more than brand reach. Firms that can evidence service continuity across occupied sites are better placed than those relying on ad hoc shifts.
795
Active firms
2026
5
Above £5M
companies over the turnover threshold
360
Since 2022
newer incorporations
Key facts
About 1% of the trading cohort reports turnover above £5M (5 of 795 firms) — the rest sits below that revenue band.
45% of the cohort was incorporated since 2022 (360 firms), so a sizeable share is in its first few filing cycles.
Commercial cleaning work in Birmingham is usually bought as a recurring site-service contract rather than a one-off supplier purchase.
Hygiene, washroom support and facilities tasks often sit alongside routine cleaning, so category boundaries can be blurred.
Local coverage matters because service quality depends on shift patterns, supervisor visits and short-notice attendance across the Birmingham metropolitan area.
Top Birmingham cleaning companies
Tame Cleaning and Maintenance Limited
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides commercial cleaning services including office, school, communal area and car showroom cleaning, as well as daily contract cleaning for businesses and institutions. Supplies trained staff and…
Serves businesses and public-sector organisations in Birmingham and the West Midlands, including offices, schools, communal property managers, car showrooms, councils, NHS sites, retailers and…
Financial Health
StrongStrong · Hiring · 55% CAGR over 2y
Location
ART CLEANING (MIDLANDS) LIMITED
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsProvides commercial cleaning services including window cleaning, high-level and difficult-access cleaning, cladding and exterior cleaning, pressure washing, carpet and upholstery cleaning, builders’…
Serves businesses, public sector bodies and property managers needing commercial cleaning, including venues, healthcare organisations, automotive sites, hotels, councils and universities, mainly…
Financial Health
StrongStrong · Growing, Hiring · 12% CAGR over 3y
Location
Wrightway Office Cleaning Limited
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides commercial contract cleaning services for offices and business premises including banks, building societies, car showrooms and restaurants. Conducts site assessments, develops cleaning…
Serves businesses across Birmingham, Coventry and the West Midlands, including offices, banks, building societies, car showrooms and restaurants needing contracted commercial cleaning suppliers.
Financial Health
HealthyHealthy · 0% CAGR over 4y
Location
GENIE CLEANING SERVICES LIMITED
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides contract cleaning services for educational institutions and commercial premises, including offices and NHS facilities. Services include commercial and educational cleaning, window and carpet…
Serves educational institutions and commercial organisations, including offices, NHS facilities, communal buildings, car showrooms and construction/portacabin sites, primarily across the Midlands…
Financial Health
StrongStrong · Hiring · 45% CAGR over 2y
Location
TCMS (Midlands) Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides commercial and industrial cleaning services for businesses, including office cleaning, industrial facility cleaning, kitchen deep cleaning, biohazard cleaning, and carpet and floor cleaning,…
Sells to businesses needing commercial and industrial cleaning, including offices, warehouses, kitchens and specialist sites. Serves facilities and operations teams across multiple sectors, with…
Financial Health
StableStable · Hiring · 9% CAGR over 4y
Location
ESSENTIAL PROFESSIONAL CLEANING LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides commercial office cleaning services for businesses including banks, insurance companies and recruitment agencies. Offers scheduled cleaning by trained staff, regular site inspections, and…
Serves offices and commercial premises in Birmingham and nearby areas, including banks, building societies, insurance firms, recruitment agencies and other businesses needing regular workplace…
Financial Health
StableStable · 2% CAGR over 4y
Location
Central Cleaning Services (Midlands) Limited
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides commercial cleaning services for businesses, including office cleaning, window cleaning, carpet cleaning, site cleaning, and industrial or commercial premises cleaning. Also supplies…
Serves businesses across Birmingham, the West Midlands and wider Midlands, including offices, work sites and industrial or commercial premises needing regular or tailored cleaning support.
Financial Health
DistressedDistressed · -12% CAGR over 2y
Location
PARKERS SUPPORT SERVICES LTD
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsProvides commercial cleaning and facilities support services for businesses, including office cleaning, window cleaning, carpet cleaning, washroom services, grounds maintenance, interior painting,…
Serves B2B customers with commercial premises in Birmingham and the West Midlands, especially offices and workplaces requiring outsourced cleaning and facilities support.
Financial Health
StrongStrong · Hiring · 6% CAGR over 3y
Location
HPS SERVICES FM LTD
Trajectory
2y · 2022–NowFinancial sub-scores
Computed from 2 filingsProvides facilities management services for purpose-built student accommodation and universities, including deep cleaning and room turnaround, communal area cleaning, summer housekeeping, security…
Serves UK purpose-built student accommodation operators, university estates and accommodation teams, and managers of student halls across single or multi-site student environments.
Financial Health
HealthyHealthy · 7% CAGR over 1y
Location
FACILITIES SUPPORT 24 7 LTD
Trajectory
4y · 2021–NowFinancial sub-scores
Computed from 4 filingsProvides facilities management services for commercial properties, including security, concierge and front‑of‑house staffing, cleaning and hygiene services, grounds maintenance, redecorating, road…
Serves B2B clients responsible for commercial properties, including property owners, landlords, managing agents and facilities or property managers needing outsourced site support.
Financial Health
StrongStrong · Growing, Hiring · 14% CAGR over 3y
Location
R&D CLEANING SERVICES LIMITED
Trajectory
3y · 2022–NowFinancial sub-scores
Computed from 3 filingsProvides commercial cleaning services for businesses, including routine contract cleaning and facility cleaning for workplaces and commercial premises. Also offers tailored cleaning programmes and…
Serves businesses and organisations across the Midlands needing outsourced commercial cleaning, typically facilities managers, site operators and commercial premises managers.
Financial Health
WeakWeak · Hiring · 5% CAGR over 2y
Location
TGC GROUP SERVICES LTD
Trajectory
4y · 2021–NowFinancial sub-scores
Computed from 4 filingsProvides commercial property maintenance services including grounds maintenance, commercial cleaning, and car park upkeep. Works with housing associations, schools, and retail premises, delivering…
Serves commercial property clients in Birmingham, including schools, housing associations, retail premises and organisations responsible for open spaces and car parks.
Financial Health
DistressedDistressed
Location
Reliance (UK) Services International Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides commercial, retail and domestic cleaning services including routine cleaning of floors, windows, walls, ceilings, lighting and furniture, restroom sanitation, dusting, vacuuming and waste…
Serves businesses and households in the Birmingham area, including facilities managers for commercial premises, retail operators needing routine or contract cleaning, and domestic customers seeking…
Financial Health
WeakWeak · -29% CAGR over 4y
Location
TUDOR ROSE CLEANING SERVICES LIMITED
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides domestic and commercial cleaning services, including office cleaning, end‑of‑tenancy and deep cleans. Also cleans retail premises, restaurants, car showrooms, and other facilities, offering…
Serves businesses and households in Sutton Coldfield and Birmingham, including offices, retail sites, restaurants, car showrooms, nurseries, dental practices, tenants, landlords and domestic…
Financial Health
StableStable · Hiring · 17% CAGR over 4y
Location
PINNY N PRESS LTD
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides domestic and commercial cleaning services, including regular home cleaning, end‑of‑tenancy and deep cleans, and industrial facility cleaning. Also offers ironing, laundry and dry cleaning…
Serves both consumers and organisations, including busy households needing domestic cleaning, ironing and laundry, plus commercial, industrial, public and private sector buyers such as offices,…
Financial Health
StrongStrong · Hiring · 8% CAGR over 2y
Location
Bespoke Facilities Management Ltd
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides facilities management and building maintenance services for commercial, rail, retail, leisure and healthcare sites. Services include electrical inspection and testing, HVAC maintenance,…
Serves businesses and organisations across the UK in commercial property, retail and leisure, distribution and logistics, construction, rail and healthcare, targeting operators responsible for…
Financial Health
StrongStrong · Growing, Hiring · 14% CAGR over 5y
Location
WESTMID SERVICES GROUP LTD
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides security, commercial cleaning, facilities management and workforce staffing services. Offers SIA‑licensed guards, CCTV monitoring, mobile patrols, alarm response, building maintenance, and…
Serves businesses and site operators across the UK, including corporate, retail, healthcare and education organisations, with buyers likely to include facilities, operations and procurement teams…
Financial Health
StrongStrong · Hiring · 12% CAGR over 4y
Location
Mcshine Cleaning Services Limited
Trajectory
1y · 2025–NowProvides residential and commercial cleaning services including office, domestic, retail and hospitality cleaning. Offers contract cleaning, deep cleaning, after-builders cleaning, pre- and…
Serves residential customers and commercial organisations across Birmingham, including offices, schools, shops, supermarkets, pubs, restaurants, leisure centres, car showrooms, landlords, tenants and…
Financial Health
Insufficient historyInsufficient history
Location
HYGIENE GROUP LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides industrial and commercial cleaning services for sectors including food production and pharmaceuticals. Services include plant and equipment cleaning, high-level cleaning, commercial…
Serves B2B clients in food and beverage production, pharmaceuticals, manufacturing, commercial premises, distribution and logistics, and food retail, including technical and operations teams managing…
Financial Health
StableStable · -70% CAGR over 4y
Location
SANITELL CLEANING SERVICES LTD
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides domestic and commercial cleaning services for houses, offices, schools, and event venues. Services include office cleaning, event cleaning, housekeeping, regular or one-off property…
Serves domestic and commercial customers in Birmingham and surrounding areas, including homeowners, offices, schools, event venues and organisers needing one-off, regular or contract cleaning support.
Financial Health
StableStable · Hiring · 50% CAGR over 4y
Location
ON-SITE FM LIMITED
Trajectory
3y · 2023–NowProvides commercial and industrial cleaning services including daily office cleaning, builders’ cleans, pressure washing, window and carpet cleaning, trauma and clinical cleaning, kitchen duct…
Serves commercial and industrial organisations across the UK, including office occupiers, construction contractors, property and facilities managers, and sites needing specialist hygiene or clinical…
Financial Health
Insufficient historyInsufficient history
Location
DAY TO DAY CLEANERS LTD
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsFinancial Health
StrongStrong · 167% CAGR over 1y
Location
T.S.C CLEANING LIMITED
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsFinancial Health
DistressedDistressed · 0% CAGR over 1y
Location
Tame Industrial Cleaning Limited
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsProvides industrial and commercial cleaning services including builders’ and deep cleans for construction and fit‑out projects, kitchen duct and ventilation cleaning, jet washing of building…
Serves B2B and public-sector customers across the UK, including construction and fit-out contractors, schools, commercial kitchens, industrial facilities and business end users.
Financial Health
StableStable · Hiring · 10% CAGR over 3y
Location
Arrow Cleaning Services Limited
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides domestic and commercial cleaning services including window cleaning, carpet and upholstery cleaning, gutter cleaning, pressure washing, solar panel cleaning, and general building, commercial…
Serves domestic households and commercial/estate clients across Solihull, Birmingham and the West Midlands, including homeowners, landlords, estate managers and local businesses.
Financial Health
HealthyHealthy · -11% CAGR over 2y
Location
QUALITY CLEANING GROUP LTD
Trajectory
1y · 2025–NowProvides commercial cleaning services for offices, construction sites, and industrial facilities, including post-construction cleaning, window cleaning, and carpet cleaning. Conducts site surveys and…
Serves commercial, construction and industrial businesses throughout the UK, from small companies to large contractors, including offices, construction sites, factories, warehouses and manufacturing…
Financial Health
Insufficient historyInsufficient history
Location
Inven3 Specialists Ltd
Trajectory
4y · 2021–NowFinancial sub-scores
Computed from 4 filingsProvides commercial and industrial cleaning services including office, warehouse, construction and communal area cleaning. Also prepares property inventory and check‑out reports and offers carpet,…
Serves businesses of all sizes, landlords and property managers across England and Wales, including offices, retail units, warehouses, factories, construction sites, commercial facilities and…
Financial Health
StrongStrong · Hiring · 44% CAGR over 3y
Location
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides commercial and domestic cleaning services including office and building cleaning, hotel housekeeping, carpet cleaning, and gardening. Offers one‑off or regular cleaning visits for businesses…
Serves businesses needing cleaning and housekeeping, including banks, commercial buildings, hotels and corporate offices, with some services aimed at households requiring house, carpet or gardening…
Financial Health
StrongStrong · Hiring · 29% CAGR over 2y
Location
Asthetika Limited
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
WeakWeak · 0% CAGR over 4y
Location
ACA CLEANING SERVICES LTD
Trajectory
3y · 2022–NowFinancial sub-scores
Computed from 3 filingsProvides domestic and commercial cleaning services, including office, retail, theatre, restaurant and communal area cleaning. Offers carpet and floor cleaning and scheduled daily, weekly or monthly…
Sells to businesses and households needing regular or one-off cleaning. Serves offices, theatres, retail sites, depots, cafés, bars, restaurants and communal areas, as well as domestic customers…
Financial Health
StableStable · -21% CAGR over 2y
Location
Deluxe Deep Cleaning Ltd
Trajectory
5y · 2022–NowFinancial sub-scores
Computed from 5 filingsProvides commercial deep cleaning services including ventilation and air intake cleaning, kitchen canopy and grease extract cleaning to TR19 standards, laundry duct cleaning, structural hygiene…
Sells to businesses needing specialist deep cleaning, especially commercial kitchens, ventilation and extraction system operators, and facilities requiring TR19-compliant duct, canopy and equipment…
Financial Health
HealthyHealthy · Hiring · 35% CAGR over 4y
Location
Safer Access Solutions Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides rope access services for buildings and structures, including maintenance, gutter and façade cleaning, window cleaning, banner installation, bird deterrent systems, stadium maintenance, and…
Serves commercial property managers, construction contractors, stadium operators and facilities teams needing high-level access services across the Midlands.
Financial Health
StrongStrong · Growing, Hiring · 7% CAGR over 4y
Location
247 BLOCKED DRAINS CLEANING LTD
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsFinancial Health
StableStable · 0% CAGR over 2y
Location
Facilitrade Services Ltd
Trajectory
2y · 2025–NowFinancial sub-scores
Computed from 2 filingsFinancial Health
DistressedDistressed
Location
Best Shine Car Wash Ltd
Trajectory
1y · 2024–NowFinancial Health
Insufficient historyInsufficient history
Location
WBC (Staffordshire) Ltd
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
HealthyHealthy · -16% CAGR over 4y
Location
PUREMAGIC CLEAN LIMITED
Trajectory
1y · 2025–NowFinancial Health
Insufficient historyInsufficient history
Location
CASCWCS LTD
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsFinancial Health
HealthyHealthy · -78% CAGR over 3y
Location
DEDUCT LTD
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides commercial and industrial duct cleaning and ventilation system maintenance, including kitchen extraction cleaning, HVAC ductwork cleaning, deep cleaning and disinfection, and fire damper…
Serves B2B commercial and industrial clients across the UK, including facilities and hygiene managers for office blocks, hospitals, hospitality venues, food manufacturers, schools, retailers,…
Financial Health
StableStable · -44% CAGR over 4y
Location
M&E CLEANING SERVICES LTD
Trajectory
1y · 2025–NowProvides cleaning services for residential and commercial properties, including routine and one‑off cleaning, deep cleaning, post‑construction cleaning, end‑of‑tenancy cleaning, and carpet cleaning…
Serves homeowners, tenants, commercial premises managers and construction firms across the UK seeking residential, commercial, post-construction, deep and carpet cleaning support.
Financial Health
Insufficient historyInsufficient history
Location
ROGER NEEDLE LTD
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides exterior cleaning services for residential and commercial properties, including window, gutter, roof, render, cladding, and solar panel cleaning, as well as pressure washing for car parks,…
Serves domestic homeowners and commercial clients across the Midlands, including property owners, facilities managers and businesses with exterior property maintenance needs.
Financial Health
WeakWeak · 0% CAGR over 4y
Location
Pmf Global Ltd
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides forensic and specialist cleaning services including crime scene and trauma clean-up, biohazard remediation, property decontamination, hypodermic needle removal, end-of-tenancy cleaning, and…
Serves businesses and public sector buyers needing specialist cleaning and decontamination, including police and custody environments, landlords, property managers, and organisations handling trauma,…
Financial Health
StableStable · Hiring · 35% CAGR over 5y
Location
Environmental Property Clearance Limited
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
WeakWeak
Location
Jetters Limited
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsFinancial Health
DistressedDistressed · 0% CAGR over 2y
Location
CMK KITCHEN AND VENTILATION SPECIALISTS
Trajectory
3y · 2022–NowFinancial sub-scores
Computed from 3 filingsFinancial Health
WeakWeak · 0% CAGR over 2y
Location
JUST GOOD HYGIENE LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides commercial ventilation hygiene services including kitchen extract and ductwork cleaning, ventilation system maintenance, fire damper testing, and deep cleaning for commercial premises, with…
Serves UK businesses with commercial premises, including commercial kitchens, building owners and facilities managers, from small independents to high street chains across varied industries.
Financial Health
StrongStrong · Growing, Hiring · 3% CAGR over 4y
Location
DRAGONFLY CLEANING LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
WeakWeak · Hiring · 68% CAGR over 4y
Location
Pioneer Commercial Cleaners Ltd
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
WeakWeak
Location
MM ROM MAINTENANCE LTD
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsFinancial Health
WeakWeak · Hiring · 50% CAGR over 2y
Location
FIRST TO WORK LTD
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
HealthyHealthy · Growing, Hiring · 11% CAGR over 4y
Location
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How Birmingham cleaning companies work and how to sell to them
What they do
Cleaning providers earn most of their revenue from recurring service contracts, usually priced by site, labour hours, cleaning frequency, consumables and whether work happens inside or outside occupied hours. The core offer is labour-led outsourced facilities work: daily office cleaning, industrial cleaning, janitorial supply, washroom services, periodic deep cleans and hygiene support. Smaller operators often sell premises-specific rounds with local supervisors, while larger regional contractors package mobile teams, cover arrangements and reporting into managed contracts. Margins tend to depend on workforce utilisation, travel time, staff retention and the ability to price scope changes before they become unpaid extras.
Who they sell to
Most cleaning firms sell to facilities managers, estates teams, office managers, operations directors and procurement leads. Finance becomes more involved where cleaning is part of a wider facilities budget, particularly across education, healthcare, retail and public-sector estates. Small office and retail contracts are often won through direct local selling, referrals and site visits, with decisions made by an owner-manager or premises lead. Larger work tends to move through formal tenders, framework-style procurement or facilities-management partners, with buyers asking for insurance, method statements, training records, right-to-work controls and evidence that supervisors can manage absence without service failure.
What they buy
Most cleaning firms tend to spend on workforce scheduling, time and attendance, mobile job management, payroll, HR, health and safety, training records and customer reporting. Operators with mobile teams often need route planning, lone-worker processes, inventory control for consumables and simple proof-of-service tools that supervisors can use on site. As they win larger contracts, accounting, bid support, insurance advice, employment law, recruitment, vetting and fleet management become more relevant. Marketing spend is usually practical rather than brand-led: local search, tender alerts, review management and sales materials that evidence service continuity, not abstract positioning.
Why and how to sell to them
Cleaning buyers tend to evaluate suppliers when labour scheduling becomes harder to manage, a new contract adds multiple sites, supervisors are stretched, or tenders start asking for clearer audit trails. Other triggers include a move into healthcare, education or industrial premises, rising wage costs, higher absence levels, a change in operations leadership, or an owner-managed firm trying to professionalise before bidding for regional work. Outbound messages usually land better when they link to margin leakage, missed shifts, proof of attendance, staff churn or tender evidence. Generic productivity claims are less useful than showing how the offer reduces service failures at occupied client sites.
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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