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Infrastructure Companies in Nottingham: 195 Active Firms (2026)
Infrastructure companies in Nottingham plan, build and maintain essential transport, utilities and civic assets across the city region.
Buying activity tends to sit with public-sector commissioners, regulated asset owners and commercial operators that need delivery capacity rather than software-only support. Nottingham suppliers in this field usually sell into tendered works, maintenance frameworks and project packages spanning transport, utilities, energy, water, waste and civic assets. The buying case is often practical: better bid visibility, workforce allocation, planned maintenance, safety governance and regional relationship management. Engagements are therefore less like one-off advisory mandates and more like repeat operational contracts tied to service levels, site access and field-team availability.
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Nottingham has 195 actively trading infrastructure companies in this list, a compact city-region cohort rather than a broad national supplier base. The reported employment footprint is 830 people, which points to many small operating businesses alongside a thinner layer of employers with larger field teams and contract-management functions. Revenue distribution also looks uneven: 21 firms report turnover above £5M, while 34 were incorporated since 2022. That mix matters for procurement research, because early-stage contractors may appear in supplier searches, but only a smaller subset is likely to satisfy larger framework requirements without partners or subcontractors.
Procurement and compliance shape the market as much as local construction demand. Public-sector and regulated customers tend to buy through tenders, call-off frameworks and approved-supplier routes, so suppliers need evidence of safety governance, insurance, field supervision and past delivery before price carries much weight. Transport, utilities, energy, water, waste and civic works also involve assets where service interruption is visible to residents or commercial occupiers. That pushes buyers towards operators with clear maintenance processes, documented incident handling and enough regional coverage to attend sites without stretching crews across the East Midlands.
Demand appears likely to remain tied to maintenance backlogs, utility resilience, local transport needs and civic asset renewal rather than to a single spending theme. The cohort also looks split between established contractors with repeat public or regulated customers and younger firms still proving delivery capacity. That tends to favour partnerships, subcontracting and selective acquisition where bidders need extra field coverage or compliance depth. Margin pressure may persist, particularly where labour planning, safety governance and tender administration sit close to day-to-day project delivery.
195
Active firms
2026
21
Above £5M
revenue threshold
34
Since 2022
new incorporations
Key facts
About 10% of the trading cohort reports turnover above £5M (21 of 195 firms) — the rest sits below that revenue band.
17% of the cohort was incorporated since 2022 (34 firms), so a sizeable share is in its first few filing cycles.
Nottingham infrastructure work tends to sit between local government procurement, developer-led projects and specialist maintenance contracts.
The sector spans transport, utilities and civic assets supporting housing, logistics, public services and commercial development.
Buying cycles often involve several counterparties, with contractors, engineering-services firms and asset-maintenance operators sitting in the same project chain.
Top Nottingham Infrastructure companies
Ashbow Estates Limited
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsProvides civil engineering and construction services including road and car park surfacing, highway maintenance, drainage works, hard landscaping, and infrastructure projects. Also delivers winter…
Serves public sector bodies, commercial organisations and private clients needing civil engineering, surfacing and maintenance, including highway authorities, infrastructure owners, airports, car…
Financial Health
StableStable · 0% CAGR over 3y
Location
R M Builders Contracting Services Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides construction and maintenance services for energy supply companies, including planning, design and construction of groundwork, structures and built environments, delivered by multi‑trade…
Serves major energy supply companies across the East Midlands, particularly organisations managing utility sites, built environments, structures and related infrastructure.
Financial Health
StableStable · -10% CAGR over 4y
Location
Capital Civils Ltd
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides civil engineering and groundworks services including roads and sewers construction, deep drainage, ducting, culvert installation, footings, concrete slabs, kerbing and manhole installation,…
Serves construction contractors, developers, commercial project clients and public-sector organisations in Nottingham and the East Midlands, including large or multi-site organisations.
Financial Health
StrongStrong · Growing, Hiring · 19% CAGR over 4y
Location
PLR BUILDING SERVICES LTD
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides mechanical and electrical engineering services for construction and infrastructure projects. Delivers electrical installations, water industry compliance work, smoke ventilation system…
Serves B2B clients in commercial construction, including main contractors, developers and framework companies working with utility companies on water infrastructure, large developments and commercial…
Financial Health
StrongStrong
Location
TRENT BRIDGE CONSTRUCTION LIMITED
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsProvides civil engineering and groundworks for housing and commercial construction projects, including site clearance, demolition, drainage and sewer installation, roadworks, foundations and floor…
Serves local authorities, housebuilders, developers and commercial/industrial clients in the public and private sectors, mainly on new housing and commercial construction projects across Nottingham,…
Financial Health
WeakWeak · -82% CAGR over 3y
Location
GARY FLETCHER (SURFACING) LIMITED
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides road and surface construction services including asphalt and tarmac surfacing for highways, car parks, driveways, housing estate roads, footpaths and sports surfaces. Also installs block…
Serves housebuilders, civil engineering firms, national retail chains, local authorities, schools, sports clubs, industrial sites and private homeowners across the East Midlands, Derbyshire,…
Financial Health
StableStable · -90% CAGR over 2y
Location
R.N. SURFACING & SONS LIMITED
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsProvides tarmac and macadam surfacing for roads, car parks, housing developments and driveways. Services include machine‑laid and hand‑laid surfacing, resurfacing, surface dressing, road planing, and…
Serves public sector bodies, transport operators, local authorities, housing developers, large subcontractors, retail parks and commercial property owners, plus farms and homeowners with large…
Financial Health
StableStable · 0% CAGR over 3y
Location
Central (High Rise) Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides steeplejack and working-at-height services including inspection, maintenance and repair of chimneys, towers, masts and tall structures. Installs and tests lightning protection and fall…
Serves businesses, facilities managers and public-sector/property organisations responsible for industrial chimneys, tall buildings, masts, towers, utilities, wind-energy assets, heritage buildings…
Financial Health
StrongStrong · Growing · 2% CAGR over 4y
Location
East Midlands Traffic Management Ltd
Trajectory
3y · 2022–NowFinancial sub-scores
Computed from 3 filingsFinancial Health
StrongStrong · Growing, Hiring · 15% CAGR over 2y
Location
CARL WRIGHT HAULAGE & PLANT LTD
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides contract haulage, plant and lorry hire, earthworks and civil engineering services. Also offers demolition, skip hire and waste disposal, and supplies aggregates and topsoil for construction…
Serves commercial and industrial clients in the Midlands, particularly construction and infrastructure contractors needing haulage, plant hire, earthworks, demolition support, waste disposal,…
Financial Health
HealthyHealthy · 1% CAGR over 2y
Location
Amps (Utilities) Ltd
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
StrongStrong · Hiring · 7% CAGR over 4y
Location
Stephen Price Surfacing Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides road construction and tarmac surfacing services, including driveway installation, resurfacing, and Section 278 works. Works on car parks, business parks, industrial sites, new property…
Serves commercial and industrial organisations across the UK, including business parks, manufacturing facilities and property developers, alongside domestic customers and homeowners in the East…
Financial Health
StableStable · -27% CAGR over 4y
Location
U.K. DIAMOND DRILLING LIMITED
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides diamond drilling, concrete cutting and sawing services for construction and demolition projects, including wall and floor sawing, stitch and percussive drilling, controlled demolition, floor…
Serves construction, demolition, civil engineering and highways contractors, plus property owners needing site-based drilling, sawing, concrete cutting or floor preparation across Nottingham,…
Financial Health
WeakWeak · -12% CAGR over 4y
Location
Interpro Expediting Ltd
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
StableStable · 0% CAGR over 4y
Location
EAST MIDLANDS DIAMOND DRILLING LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides specialist diamond drilling and concrete cutting services for construction and civil engineering projects, including core drilling, floor and wire sawing, stitch drilling, robotic…
Serves B2B customers in construction, civils and highways, including contractors and project teams needing specialist drilling, sawing, demolition and deconstruction support for building and…
Financial Health
WeakWeak · -82% CAGR over 4y
Location
North Trade Services Ltd
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
HealthyHealthy · Growing · 0% CAGR over 4y
Location
GOSAL HAULAGE LTD
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsFinancial Health
StableStable
Location
B & B CONSTRUCTION LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
StableStable · -68% CAGR over 4y
Location
Clearway (Midlands) Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides road and line marking services for roads, car parks, warehouses, factories, playgrounds and sports courts. Applies thermoplastic and painted markings, safety and electric vehicle bay…
Serves public and private sector clients across the Midlands and UK, including local authorities, businesses operating car parks, factories and warehouses, and organisations managing playgrounds,…
Financial Health
WeakWeak · 0% CAGR over 4y
Location
RAIL INDUSTRY CONTRACTORS ASSOCIATION LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
DistressedDistressed · -68% CAGR over 4y
Location
P J T Plant Limited
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides civil engineering and groundworks services for construction projects, operating a fleet of plant and machinery to carry out site preparation, excavation, drainage, and related infrastructure…
Serves B2B construction clients, including main contractors, developers and project owners requiring groundworks and civil engineering support.
Financial Health
StableStable · 0% CAGR over 2y
Location
POWER PLANE HOLDINGS LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
WeakWeak
Location
CASTLE ELECTROMAGNETIC COMPATIBILITY LTD
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
DistressedDistressed · -68% CAGR over 4y
Location
SAWAZ TRADING LTD
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
DistressedDistressed · 0% CAGR over 4y
Location
David George Consultancy Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
StrongStrong
Location
FOLEY FORMWORK LTD
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
DistressedDistressed
Location
Maplewell Construction Services Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
WeakWeak · 0% CAGR over 4y
Location
Bemac Construction Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides formwork contracting and structural concrete services for construction and civil engineering projects, including steel fixing, reinforcement installation, and concrete works, supporting…
Serves construction and civil engineering clients nationwide, including contractors and project owners across major construction sectors.
Financial Health
HealthyHealthy · Growing · 0% CAGR over 4y
Location
Midlands Civil Engineering & Plant Hire Limited
Trajectory
5y · 2022–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
HealthyHealthy · -18% CAGR over 4y
Location
DG DEVELOPMENTS (NOTTM) LIMITED
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsFinancial Health
HealthyHealthy · 0% CAGR over 4y
Location
McCann Developments Limited
Trajectory
4y · 2022–NowProvides civil and electrical engineering construction services for major infrastructure projects, including highways, street lighting systems, and multi‑utility networks. Works on road, rail and…
Serves public and private sector clients delivering major road, rail and airport infrastructure projects across the UK, plus organisations in the highway electrical, construction and allied…
Financial Health
Insufficient historyInsufficient history
Location
RHINO CIVILS LIMITED
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsProvides civil engineering and groundworks services as a subcontractor for construction and utilities projects. Delivers roads and sewer infrastructure, water and sewer connections, power sector…
Sells to B2B and public-sector buyers in construction, utilities and infrastructure, including power and water sector clients, commercial developers, and organisations needing roads, sewers,…
Financial Health
StrongStrong · Growing · 0% CAGR over 3y
Location
RAILWAY ELECTRICAL SERVICES LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides electrical engineering services for the rail industry, including design, consultancy, testing, installation and maintenance. Also delivers civil works, telecoms systems, lighting, points…
Sells to rail infrastructure clients and contractors needing electrical engineering support, including project teams for stations, platforms, level crossings, signalling, lighting and points heating…
Financial Health
HealthyHealthy · -69% CAGR over 4y
Location
Harlite Installations Limited
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsSupplies, designs and installs external amenity lighting systems for roads, motorways, car parks, sports grounds and commercial sites. Also installs street furniture including road signage, bus…
Serves councils, local authorities, civil engineers, private developers, supermarkets, motorway service areas, sports clubs and commercial retail clients across the East Midlands and wider UK.
Financial Health
StableStable · -17% CAGR over 2y
Location
Rayden Engineering Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsDesigns, fabricates and installs high‑pressure steel pipelines and above‑ground installations for gas, oil, petrochemical and water industries. Provides welding, mechanical and civil engineering…
Sells to B2B and infrastructure clients in the gas, oil, petrochemical and water sectors, including operators and contractors needing high-pressure pipeline, AGI and live gas system work for projects…
Financial Health
WeakWeak · -7% CAGR over 4y
Location
TOTAL SPECIALIST MAINTENANCE LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides specialist construction maintenance and repair services including concrete repair, chemical‑resistant linings, resin and industrial flooring, structural strengthening, ground stabilisation,…
Serves B2B and public-sector clients in construction, infrastructure and facilities, including aviation, rail, highways, water, energy, petrochemical, pharmaceutical, food and drink, healthcare,…
Financial Health
HealthyHealthy · -38% CAGR over 4y
Location
STRUCTURAL INVESTIGATION SERVICES LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides structural inspection and asset management services for infrastructure and built assets. Conducts surveys, non‑destructive testing, monitoring, investigations and material testing, and…
Serves public-sector and commercial owners and managers of structural and civil engineering assets across the UK, including infrastructure, bridge and built-environment asset teams needing…
Financial Health
WeakWeak · -56% CAGR over 4y
Location
Broughton Contracting and Utility Services Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides contracting and civil engineering services supporting utility and infrastructure networks, including electricity, water, wastewater, gas and communications. Delivers excavation, backfill and…
Serves Distribution Network Operators, local authorities and Tier One contractors in the utility, EV charging and infrastructure sectors, supporting public and private sector projects across the UK.
Financial Health
StrongStrong · Growing, Hiring · 15% CAGR over 4y
Location
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides rail infrastructure contracting services including track works, civil engineering, overhead line equipment (OLE), signalling and telecoms, trackside lighting and safety barrier fencing, as…
Serves rail infrastructure clients and principal contractors across the UK, including organisations responsible for track, civils, overhead line, signalling, telecoms, ecology, power and lineside…
Financial Health
StableStable · 1% CAGR over 2y
Location
ROBINSON'S PAVER HIRE LIMITED
Trajectory
2y · 2024–NowFinancial sub-scores
Computed from 2 filingsProvides road surfacing and civil engineering services for highways, commercial and public sector projects. Offers paver hire, plant and equipment hire, labour supply, line marking, and asphalt…
Serves commercial and industrial clients, housing developers, leisure and sports facility operators, highways bodies, local authorities, and domestic/public customers across the UK.
Financial Health
StableStable · 3% CAGR over 1y
Location
PREMIER CABLE INSTALLATIONS LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides high‑ and low‑voltage cable installation for construction and infrastructure projects, including sub‑mains installation and termination, cable jointing, control cable installation,…
Sells primarily to businesses and contractors needing high- and low-voltage cable installation, jointing and maintenance, including construction firms, electrical contractors, utilities, hospitals,…
Financial Health
WeakWeak · -70% CAGR over 4y
Location
Abacus Lighting Ltd
Designs and manufactures lighting columns, high-mast lighting systems and floodlighting for infrastructure, sports venues, transport and commercial sites. Provides lighting design, installation,…
Serves B2B and public-sector buyers in infrastructure and large-site environments, including rail operators, airports, ports, retail estates, sports clubs and stadiums, local amenity projects, and…
Location
ALLIANCE GROUP SOLUTIONS LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsDesigns and delivers civil engineering and water infrastructure projects, including flood defence and mitigation systems. Provides surveying, consulting, project design, construction and installation…
Serves a mix of B2C, B2B and public-sector customers: individual property owners, commercial property owners, public bodies, developers and major water companies throughout the UK.
Financial Health
StableStable · -69% CAGR over 4y
Location
FERNMAC LIMITED
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsProvides highway and civil engineering contracting services including road surfacing, groundwork, paving and line marking. Also installs electric vehicle charging infrastructure and undertakes…
Serves businesses, developers, contractors and public-sector bodies requiring groundwork, paving and highway-related construction support.
Financial Health
WeakWeak · -78% CAGR over 3y
Location
North Notts Civils Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides civil engineering and groundworks services for construction projects. Activities include installation of foul and storm drainage, foundations and concrete formwork, road, car park and…
Serves main contractors, commercial developers and public-sector organisations on construction projects, including schools, hospitals, police and defence sites, nature reserves, sports facilities and…
Financial Health
StrongStrong · Growing, Hiring · 5% CAGR over 4y
Location
PARKIN CONTRACTORS LIMITED
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides construction, groundworks and property maintenance services for commercial and domestic clients, including highway maintenance, external drainage, driveways and dropped kerbs, landscaping,…
Serves commercial clients, public-sector bodies and domestic customers across Nottinghamshire, Derbyshire and Lincolnshire, including premises owners, NHS/hospitals, councils, housing associations,…
Financial Health
HealthyHealthy · -15% CAGR over 2y
Location
TRENT REMEDIATION SERVICES LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides site remediation and groundworks services for construction projects, including earthworks, roads and sewers installation, and licensed asbestos removal. Supplies aggregates and topsoil,…
Serves construction contractors, housebuilders and property developers, including regional and national homebuilders, primarily around Nottinghamshire.
Financial Health
HealthyHealthy · 0% CAGR over 4y
Location
EAST MIDLANDS CIVIL ENGINEERS LTD
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides civil engineering and groundworks for housing developments, including construction of adoptable drainage and sewer systems, roads and footpaths, foundation works, and external works such as…
Serves residential housing developers and construction clients delivering new housing developments, working alongside client representatives, local authorities and highways inspectors across the…
Financial Health
StableStable · 0% CAGR over 2y
Location
Highway Fencing Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides installation, maintenance and removal of vehicle restraint systems and highway safety fencing, including permanent and temporary barriers. Works on road and infrastructure projects…
Serves highways-sector organisations managing vehicle restraint system projects, including road infrastructure contractors, maintenance providers and public-sector highway authorities across the UK.
Financial Health
StableStable · Hiring · 25% CAGR over 4y
Location
DJ & M Bower Tarmac Surfacing Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides tarmac and asphalt surfacing services including driveway installation, road and car park resurfacing, paving, and line marking for residential and commercial projects, handling groundwork…
Serves homeowners, commercial property owners and public-sector organisations in Nottinghamshire and Derbyshire with driveway, parking area and resurfacing project needs.
Financial Health
WeakWeak · -4% CAGR over 4y
Location
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How Nottingham Infrastructure companies work and how to sell to them
What they do
Nottingham infrastructure suppliers usually earn revenue from framework call-offs, fixed-price project packages, planned maintenance retainers and reactive works ordered when an asset fails or a site becomes unsafe. Pricing tends to mix schedules of rates, day rates for crews and plant, unit prices for defined tasks, and cost-plus arrangements where scope is uncertain. The service is physical delivery wrapped in project controls: site surveys, labour planning, materials sourcing, traffic or access coordination, safety paperwork and handover records. Margins depend on utilisation, subcontractor management, claims discipline and whether the firm can convert projects into repeat maintenance rather than treating each job as a standalone tender.
Who they sell to
Most buyers are public-sector commissioners, utility and energy asset owners, transport bodies, waste and water operators, and commercial estates teams with local assets to keep open. Decision-makers are usually procurement managers, asset managers, operations directors, estates leads, project managers, commercial directors and health-and-safety owners; finance teams appear when a framework or capital project needs budget sign-off. Smaller repairs may be bought through approved-supplier lists or direct call-offs, while larger programmes tend to move through formal tenders, framework competitions and partner-led bids. Sales cycles are therefore uneven: emergency work can move quickly, but planned works often wait for budget cycles, design approvals and site-access windows.
What they buy
Most infrastructure firms tend to spend on tools and services that reduce bid leakage, wasted labour time and compliance drift. Common categories include tender monitoring, bid writing support, customer relationship management, estimating, project costing, workforce scheduling, fleet and plant management, asset inspection, document control, field-service apps, health-and-safety systems and finance software that handles staged payments and retention. They also buy insurance advice, construction-law support, payroll, recruitment for site supervisors and engineers, training, marketing for local authority and commercial buyers, and data services for pipeline tracking. Cloud infrastructure matters less as a standalone pitch than its effect on site reporting, document retrieval and contract evidence.
Why and how to sell to them
Infrastructure buyers tend to evaluate suppliers when contract volume outgrows spreadsheet-led planning, when a new framework has been won, when site teams are added, or when safety incidents, missed service levels or margin leakage expose gaps in control. Funding events are less visible than in software, so intent signals often sit in recruitment, tender awards, new depots, senior operations hires, accreditations and subcontractor activity. Outbound works better when it connects to a concrete operational cost: fewer aborted visits, faster evidence packs, less rework, lower claims exposure or clearer bid qualification. Generic efficiency language is easy to ignore; local delivery constraints make a sharper opening.
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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