Construction Companies Using Spectra in the UK: 71 Active Firms (2026)
Construction companies running a detected web technology deliver building, civil engineering and specialist trade work across the UK.
For construction adopters, Spectra sits in the public website layer rather than in estimating, project controls or site-safety software. It helps teams assemble service pages, project portfolios, enquiry routes and bid-support content without a fully bespoke build. Its presence tends to signal a contractor with some marketing ownership, either in-house or agency-supported, and a website treated as a procurement and inbound-enquiry asset. The fit is clearest among mid-market building contractors, civil engineering operators and specialist trades that sell to developers, commercial property owners, public buyers and facilities managers.
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Across the UK, the adoption picture covers 71 actively trading construction companies running Spectra. Within the detected site-plugin ranking for construction, it sits below the other listed plugins at 2.8% of 2,532 instances, so usage appears more selective than general content, security and optimisation add-ons. Regional skew is outside London: South East accounts for 19.7%, East of England 15.5% and West Midlands 12.7%, compared with London at 9.9% and North East at 8.5%. The employment footprint is modest but visible, with these users reporting 1,276 employees in total.
UK construction remains a multi-regime market rather than a single licensed sector, which matters for web content as much as for on-site delivery. HSE’s Construction (Design and Management) Regulations place duties on planning work, appointing suitable people, coordinating activity and consulting workers. HMRC’s Construction Industry Scheme shapes contractor and subcontractor payment flows, with registration status affecting deductions. Construction product claims also sit under Office for Product Safety and Standards oversight, with building safety issues linking back to the Building Safety Regulator within HSE. For website operators, that points towards careful wording on competence, accreditations, product claims and project evidence.
Adoption appears likely to stay tied to marketing refresh cycles rather than core construction software replacement. Contractors with maintained project libraries, bid teams and repeat commercial clients tend to have more reason to keep Spectra, especially where the website doubles as evidence for procurement shortlisting. Smaller trades may keep lighter sites unless agencies bundle page-building tools into routine maintenance. Over time, consolidation among website tooling and pressure for clearer consent, accessibility and performance controls may favour simpler stacks, but construction buyers are likely to move cautiously because websites sit behind day-to-day delivery systems in budget priority.
What’s in the file
One row per company, 50+ columns — everything below plus each company’s verified directors, from Companies House filings.
Company data
Verified directors — included
Active director count is the full Companies House board, so it can be higher than the number of names listed — we leave out nominee and formation-agent directors, who aren’t worth contacting. It’s blank for the small number of companies whose officers we haven’t fetched yet.
You’re charged per business, not per row. Where a business trades through several registered companies you get every one, and the Group Primary column marks one row per business — filter to those and the count matches your invoice. Rows sharing a website are not automatically one business: franchises and multi-site operators each count separately, and where names don’t prove a relationship we count them apart rather than guess.
Adoption by company size
Adoption of Spectra rises with company size across the trading UK construction companies in this cohort. 0% of the 231,908 companies with under 10 employees run Spectra (48 detected). 0.2% of the 8,701 companies with 10–50 employees run Spectra (19 detected). 0.3% of the 662 companies with over 50 employees run Spectra (2 detected). That is a 0.3% gap between the over 50 employees and under 10 employees bands.
71
Active firms
2026
2.8%
Of detected WordPress plugins share
UK construction
7
Median headcount
Filed accounts
132
Verified directors
Across this cohort
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Key facts
About 8% of the trading cohort reports turnover above £5M (6 of 71 firms) — the rest sits below that revenue band.
14% of the cohort was incorporated since 2022 (10 firms), so a sizeable share is in its first few filing cycles.
Within construction firms where a comparable plugin is detectable, this detected plugin represents 2.8% (71) of 2,532 companies, below larger plugin cohorts that range from 12.8% (323) to 19.1% (484).
Regional registrations are weighted towards the South East at 19.7% (14), followed by the East of England at 15.5% (11) and the West Midlands at 12.7% (9).
A content-management platform appears on 100.0% (71) of sites in the cohort; search-optimisation, analytics and cookie-consent tooling appear at 54.9% (39), 36.6% (26) and 25.4% (18).
HSE’s Construction (Design and Management) Regulations 2015 set duties for construction roles, while HMRC’s Construction Industry Scheme governs contractor deductions from subcontractor payments.
ONS reported 370,770 VAT and PAYE registered construction firms in Quarter 3 2024, up 1.7% on 2023, and 1.4 million construction-related employees excluding self-employment.
Page builders market share among UK Construction
Share of the 2,532 UK Construction with a detectable system. As of June 2026.
What else do Spectra-running Construction run?
Share of the 71 Spectra-running UK companies where each technology was also detected. As of June 2026.
Where Spectra Construction are, and how healthy they look
By region
By registered-office region; companies without a regional match count toward Rest of UK.
By financial health
From filed accounts; firms with fewer than two filings show as insufficient history.
7
Median headcount
£896.8K
Median UK turnover
8.5%
Above £5M turnover
10
Incorporated since 2022
Verified directors — included in the file
Director names and roles for these 127 businesses, alongside financials and websites, in one Excel + CSV file.
Top UK Construction using Spectra
Ranked by sales-readiness score: an AI model assesses what each company does, its sector and size, and scores its overall fit. Best-fit prospects appear first.
Financial sub-scores
Computed from 5 filingsProvides construction services including design and build, civil engineering, and project management. Delivers housing developments and commercial redevelopment projects, and undertakes building…
Serves public and private sector clients in Northern Ireland, including housing developers, commercial property owners, churches, educational institutions and healthcare organisations.
Financial Health
StrongStrong · -4% CAGR over 4y
Location
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Financial sub-scores
Computed from 5 filingsProvides commercial and industrial scaffolding services, including design and installation of access systems for construction, maintenance and infrastructure projects. Works on bridges, marine…
Serves domestic, commercial and industrial customers across the UK, including infrastructure contractors, asbestos removal firms, demolition sites, marine and petrochemical operators, manufacturers,…
Financial Health
StableStable · -60% CAGR over 5y
Location
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Financial sub-scores
Computed from 3 filingsProvides commercial construction and interior fit‑out services, specialising in clean room design and installation for medical and pharmaceutical facilities. Also installs HVAC, electrical systems,…
Serves B2B clients in medical, pharmaceutical and controlled-environment sectors, including healthcare facilities, facility managers and organisations needing compliant commercial internal build and…
Financial Health
WeakWeak · Hiring · 7% CAGR over 2y
Location
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Financial sub-scores
Computed from 5 filingsDesigns and constructs petrol filling stations and forecourts, including fuel infrastructure upgrades and retanking. Provides retail construction and shopfitting, EV charging forecourt development,…
Serves B2B clients in the UK petrol forecourt, fuel retail, EV charging and retail property sectors, including operators and developers needing construction, refurbishment or design-and-build…
Financial Health
WeakWeak · -4% CAGR over 4y
Location
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- Advanced Industrial Roofing and Cladding Solutions07974380
Financial sub-scores
Computed from 3 filingsProvides industrial, commercial and agricultural roofing and cladding installation and refurbishment, including single‑skin, twin‑skin and composite systems. Manufactures metal flashings, gutters and…
Serves UK construction contractors, architects and end clients needing residential, industrial, commercial and agricultural roofing or cladding projects, including large contractors, schools,…
Financial Health
HealthyHealthy · -18% CAGR over 2y
Location
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Financial sub-scores
Computed from 3 filingsProvides commercial and industrial groundworks and civil engineering services, including drainage installation, concrete works, car park repairs and maintenance, footpath construction, and kerb…
Serves commercial and public-sector organisations, including facilities management companies, schools, hospitals, hotels, supermarkets, industrial firms, and highways or roads clients.
Financial Health
StrongStrong · -20% CAGR over 1y
Location
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Financial sub-scores
Computed from 2 filingsProvides electrical contracting services for construction projects, including installation and refurbishment of electrical systems in commercial, education, leisure and healthcare buildings. Also…
Serves a mix of B2B and B2C customers: construction industry partners, commercial property clients, education, leisure and healthcare organisations, housing contract clients, and homeowners seeking…
Financial Health
StrongStrong · -6% CAGR over 1y
Location
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Financial sub-scores
Computed from 4 filingsDesigns, installs, and maintains fire protection systems for domestic and commercial buildings, including fire sprinklers, hydrants, and dry and wet riser fire mains, with system design to meet…
Serves local and national businesses, property owners and facilities managers, including tall buildings, university campuses, large factories and business parks.
Financial Health
StrongStrong · Hiring · 10% CAGR over 3y
Location
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Financial sub-scores
Computed from 3 filingsProvides licensed asbestos removal and hazardous material remediation for domestic and commercial properties, including soft strip services, demolition preparation, fire and flood damage remediation,…
Serves commercial and domestic clients across the UK, including property owners, landlords, facilities managers, insurers and contractors managing refurbishments, emergencies, demolition or…
Financial Health
HealthyHealthy · Hiring · 18% CAGR over 2y
Location
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Financial sub-scores
Computed from 4 filingsProvides design, fabrication and on-site installation of architectural metalwork, glazing and unitised cladding systems for construction projects, including project planning, documentation and…
Serves construction-sector businesses, main contractors, developers and specialist subcontractors needing project-based metalwork, glazing and unitised cladding support.
Financial Health
HealthyHealthy · Hiring · 44% CAGR over 3y
Location
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Financial sub-scores
Computed from 3 filingsProvides civil and power engineering services for electricity and utility infrastructure projects, including grid and DNO connections, high‑voltage cable installation, private network construction,…
Serves B2B utility and power infrastructure clients, including distribution network operators, grid contractors, independent connection providers, private network owners, renewable energy developers…
Financial Health
WeakWeak · 4% CAGR over 2y
Location
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Financial sub-scores
Computed from 5 filingsProvides building services engineering consultancy and contracting, including MEP project management, electrical and mechanical design, commissioning management, plant replacement, installation, and…
Serves B2B construction and building-services buyers, including main contractors, consultants, facilities managers and end users. Targets organisations delivering complex construction and…
Financial Health
HealthyHealthy · 0% CAGR over 4y
Location
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Computed from 5 filingsProvides floor screeding and flooring system installation for construction projects, including sand and cement and flowing screeds, resin flooring, polished concrete, and industrial floors. Also…
Serves housebuilders, construction contractors and commercial/industrial site operators across the UK, including residential developers, factories, retailers, commercial kitchens and food and drink…
Financial Health
HealthyHealthy · -57% CAGR over 4y
Location
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Financial sub-scores
Computed from 5 filingsProvides commercial flooring contracting services including site surveys, design support and installation. Installs carpet tiles, sheet vinyl, luxury vinyl tiles, rubber, linoleum and entrance…
Sells to businesses and commercial organisations needing flooring services, from small repair buyers to large new-build projects. Serves sectors including healthcare, education, retail, industrial,…
Financial Health
HealthyHealthy · -36% CAGR over 4y
Location
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Financial sub-scores
Computed from 2 filingsProvides industrial, commercial and agricultural roofing services including new roof installation, repairs and refurbishment, cladding installation, asbestos removal, steel frame erection, and grain…
Serves UK businesses with industrial, commercial and agricultural sites, including clients managing new builds, large refurbishments, repairs, cladding works, agricultural buildings and commercial…
Financial Health
StableStable · 0% CAGR over 1y
Location
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Computed from 5 filingsProvides turnkey interior fit-out, design, and project management services for retail, commercial, food and beverage, and healthcare facilities. Also delivers planned and reactive property…
Serves B2B clients from SMEs to multinational organisations in retail, food and beverage, healthcare and commercial sectors, targeting property and facilities teams managing fit-out, maintenance and…
Financial Health
HealthyHealthy
Location
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Computed from 4 filingsDesigns, fabricates and installs structural steelwork for commercial, industrial and residential construction projects. Services include steel fabrication and erection, steel lintels, industrial…
Serves B2B and public-sector construction clients nationwide, including commercial, industrial and residential property projects, high-rises, stadia, schools, hospitals, military/high-security sites,…
Financial Health
WeakWeak · -1% CAGR over 3y
Location
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Computed from 4 filingsProvides commercial and industrial electrical services including installations, fit‑outs, power distribution, lighting systems, EV charging infrastructure, hazardous area (CompEx) installations,…
Serves commercial, industrial and public sector organisations across Scotland, including facilities managers, principal contractors, fleet operators and sites requiring compliant electrical support…
Financial Health
WeakWeak · -7% CAGR over 3y
Location
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Computed from 3 filingsProvides façade installation, maintenance and repair services for buildings, including balustrading and decking systems, glazed balconies and terraces. Conducts external wall surveys and carries out…
Serves building owners, landlords, property managers and construction teams responsible for apartment blocks and other buildings requiring façade safety, external wall fire-risk compliance, balconies…
Financial Health
StableStable · 0% CAGR over 2y
Location
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Computed from 5 filingsProvides commercial building and property development services including general construction, plumbing, electrical work, joinery, roofing, gas installations, bricklaying and stone masonry. Also…
Serves commercial agents, architects, schools, universities, local authorities, social housing landlords, businesses, and public or third sector organisations in the North East.
Financial Health
WeakWeak · Hiring · 3% CAGR over 4y
Location
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Computed from 5 filingsInstalls composite windows, doors and façade systems for residential and commercial construction projects. Provides large-scale window installation, balcony glazing installation, small works…
Serves UK property developers, main contractors and construction site teams delivering large-scale building and refurbishment projects that require specialist facade, window, door and balcony…
Financial Health
DistressedDistressed · -66% CAGR over 4y
Location
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Computed from 5 filingsProvides construction support services including plant hire (self‑drive or operated), bulk earthworks, load and haul, crushing and screening, and demolition and recycling. Also supplies plant…
Serves construction contractors, developers and site managers in West Yorkshire, from small local projects to large-scale developments requiring site plant, labour and equipment support.
Financial Health
StrongStrong · Growing, Hiring · 41% CAGR over 5y
Location
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Computed from 5 filingsProvides passive fire protection services for commercial, industrial, and residential buildings, including installation and maintenance of fire-stopping systems and other measures designed to limit…
Serves businesses, contractors and property owners responsible for commercial, industrial and domestic buildings requiring passive fire protection.
Financial Health
StrongStrong · Growing, Hiring · 9% CAGR over 3y
Location
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Computed from 5 filingsProvides roofing services for domestic, commercial and industrial properties, including slate and tile roof installation, leadwork, guttering, and new‑build roofing. Undertakes roof construction,…
Serves homeowners, commercial property owners, industrial clients and major housebuilders in Northamptonshire, including buyers responsible for new-build and refurbishment roofing projects.
Financial Health
StrongStrong · Hiring · 18% CAGR over 5y
Location
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Computed from 3 filingsProvides commercial refurbishment and fit‑out services for offices and other commercial properties. Delivers workspace redesign, interior upgrades, structural refurbishment, school renovations and…
Serves businesses, schools and commercial property stakeholders across London and the South East, including office occupiers, retail, hospitality and healthcare premises, plus architects, designers…
Financial Health
WeakWeak · -20% CAGR over 2y
Location
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Provides construction and project delivery services for property developments, residential buildings, educational facilities and interior fit‑outs. Undertakes new‑build construction and refurbishment…
Serves property developers, homeowners, educational institutions and commercial clients across office, healthcare, industrial, retail, leisure and heritage sectors.
Financial Health
N/AN/A
Location
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- RS Miller Group10718094
Financial sub-scores
Computed from 2 filingsProvides roofing services including installation of pitched and flat roofing systems such as single‑ply membranes, built‑up felt and asphalt. Also installs photovoltaic solar panels, undertakes…
Serves homeowners, housebuilders, property developers and construction contractors, from small residential projects to large developments and £1m+ contracts; also sells to trade customers needing…
Financial Health
HealthyHealthy · Profitable · 0% CAGR over 1y
Location
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Computed from 4 filingsDesigns, supplies and installs playgrounds and outdoor recreation areas, including play equipment, outdoor gym equipment and safety surfacing such as wet pour and rubber mulch. Also provides…
Sells to UK local authorities, housebuilders, main contractors and schools, serving public sector and B2B buyers responsible for playgrounds, outdoor fitness areas and related outdoor recreational…
Financial Health
WeakWeak · -9% CAGR over 3y
Location
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Computed from 4 filingsSupplies and installs PVCu and aluminium windows, aluminium-clad timber windows, composite and sliding doors, bi-fold doors, conservatories, roof lanterns and cavity closers for residential new-build…
Serves B2B customers in East Anglia’s building trade, especially developers, housebuilders and installers working on new build housing developments and residential projects.
Financial Health
WeakWeak · -7% CAGR over 3y
Location
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- CW Russell Haulage09831067
Financial sub-scores
Computed from 3 filingsProvides haulage services, plant and machinery hire, and low loader transport for construction projects. Supplies quarried and recycled aggregates, operates crushing and screening equipment, and…
Serves B2B customers in the construction sector, including contractors, project managers, site operators and recycling yard operators with active sites and materials-handling needs around…
Financial Health
StrongStrong · Profitable, Growing, Hiring · 12% CAGR over 2y
Location
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Computed from 5 filingsProvides bricklaying and masonry contracting for residential and commercial construction projects, including brickwork, blockwork and stonework. Also installs basement waterproofing systems and…
Serves private homeowners, residential developers and commercial construction contractors on residential and commercial projects across North and Central London and nearby towns.
Financial Health
WeakWeak · Hiring · 4% CAGR over 4y
Location
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Computed from 3 filingsDesigns, fabricates and installs structural and fabricated steelwork for industrial projects. Provides in‑house draughting, refurbishment of plant and equipment, and on‑site installation and…
Serves B2B clients across multiple UK sectors, including industrial and commercial organisations with structural steelwork, plant/equipment, machinery installation, material handling and maintenance…
Financial Health
HealthyHealthy · Hiring · 10% CAGR over 2y
Location
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Computed from 5 filingsProvides consultancy, design and installation services for data centre and communications room infrastructure, including M&E systems and facility fit-outs. Supports the planning and implementation of…
Serves B2B organisations in the data centre industry, including data centre operators and businesses with comms rooms or mission-critical IT facilities needing infrastructure support.
Financial Health
StrongStrong · Growing, Hiring · 9% CAGR over 4y
Location
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Computed from 5 filingsProvides groundworks and civil engineering services including site excavation, foundations and plot works, drainage installation, concrete slabs, roads and kerbing, service trenches, car parks, and…
Serves homeowners, property developers, contractors and commercial/civil infrastructure clients across Carlisle and Cumbria needing groundworks support for residential plots, commercial sites and…
Financial Health
StrongStrong · Hiring · 37% CAGR over 4y
Location
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Computed from 4 filingsProvides building and construction services including property renovations, extensions and general building works. Delivers projects for private and public sector clients using in-house tradespeople…
Serves private and public sector construction clients, including property owners and organisations commissioning renovations, extensions and building projects, with an emphasis on customers across…
Financial Health
StableStable · -4% CAGR over 3y
Location
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Computed from 5 filingsProvides retail shopfitting and joinery installation services, including manufacture and installation of retail fixtures, fittings and interior elements for stores, delivering practical build and…
Serves retail businesses, including store owners and retail brands, needing practical in-store project and joinery solutions.
Financial Health
StrongStrong · Hiring · 19% CAGR over 4y
Location
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Provides facilities management and construction-related services including building maintenance, fire safety systems, electrical installation, security and CCTV, cleaning, damp and mould remediation,…
Serves B2B and public-sector property owners and managers, especially housing associations, plus clients responsible for residential buildings and commercial complexes needing facilities,…
Financial Health
N/AN/A
Location
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Computed from 5 filingsProvides commercial fit out and refurbishment services for offices, industrial, retail and leisure premises. Offers design, feasibility studies, project management, construction and facilities…
Serves businesses and organisations needing commercial premises fit-out or refurbishment, including industrial, office, commercial, retail, leisure and education clients in Birmingham and the West…
Financial Health
WeakWeak · -4% CAGR over 4y
Location
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Computed from 5 filingsProvides project planning, management and site development services for telecoms, highways and solar infrastructure projects, including site surveys, multi‑phase site builds and health and safety…
Serves B2B customers in the telecoms, highways and construction sectors, including organisations managing multi-phase infrastructure sites, surveys and full site builds.
Financial Health
WeakWeak · -70% CAGR over 4y
Location
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Computed from 5 filingsProvides energy efficiency and home retrofit services, delivering insulation and other energy‑saving measures under schemes such as ECO and the Great British Insulation Scheme. Manages assessment,…
Sells to local authorities, housing associations, landlords, private homeowners and private renters across the UK, and also serves installer partners and funders involved in ECO, GBIS and other…
Financial Health
StableStable · Hiring · 9% CAGR over 4y
Location
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Computed from 5 filingsProvides external building cleaning and restoration services for commercial, industrial and residential properties, including render cleaning, façade cleaning and repair, cladding cleaning and…
Serves commercial, industrial and residential property owners and managers nationwide, including businesses, warehouse operators, listed-building owners and residential block managers.
Financial Health
StrongStrong · Growing · 0% CAGR over 4y
Location
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Computed from 4 filingsDevelops and builds new‑build residential housing developments, including starter homes, family houses and retirement properties. Designs, constructs and sells homes within planned communities,…
Sells to homebuyers in North and North East Lincolnshire, including first-time buyers, families seeking larger properties, and retirees looking for new-build homes in local developments.
Financial Health
StableStable · Profitable · -12% CAGR over 2y
Location
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Computed from 5 filingsProvides commercial workspace design and office fit‑out services, including interior design, design-and-build projects, and co‑working space planning. Supplies office and home office furniture and…
Sells to businesses needing commercial workspace design, fit-outs, furniture and relocation support, including corporate offices and co-working spaces. Also serves individual home-office buyers…
Financial Health
StrongStrong
Location
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Computed from 5 filingsProvides installation, servicing and maintenance of air conditioning, HVAC and ventilation systems for domestic and commercial properties. Also carries out electrical installations and related…
Sells to homeowners and commercial property customers needing HVAC, ventilation, electrical and facilities services, serving domestic and business clients across London and the UK.
Financial Health
HealthyHealthy · Hiring · 14% CAGR over 4y
Location
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Computed from 5 filingsInstalls solar control window films, heritage blinds, and UV‑filtering glazing systems. Provides surveys and installation for museums, galleries, historic houses and other buildings to reduce…
Serves B2B and institutional heritage-sector clients, including stately homes, country houses, castles, museums, art galleries and trusts. Targets architects, curators and estate managers responsible…
Financial Health
HealthyHealthy · Hiring · 6% CAGR over 4y
Location
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Computed from 4 filingsProvides bricklaying and masonry contracting services for residential and commercial construction projects, including brickwork and stonework installation. Works with developers and contractors to…
Serves residential and commercial construction clients, including developers, main contractors and property owners commissioning brick and stonework packages for building projects.
Financial Health
WeakWeak · -10% CAGR over 3y
Location
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Computed from 5 filingsSupplies natural limestone including Bath and Portland stone and provides architectural stone fabrication. Offers stone masonry, CNC‑machined stone production, design drawings, walling construction,…
Sells to both trade and end customers, including housebuilders, property developers, architects, contractors and homeowners needing natural stone supply, masonry, restoration and new-build stonework…
Financial Health
WeakWeak · -18% CAGR over 4y
Location
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Financial sub-scores
Computed from 5 filingsSupplies and installs modular access ramp systems including wheelchair ramps, threshold ramps, portable ramps, modular steps and handrails. Provides ramp design, hire and rental services for…
Serves public sector and healthcare buyers, including NHS, social services, occupational therapy teams, schools and public buildings, plus residential clients and carers with access needs.
Financial Health
StableStable · -59% CAGR over 5y
Location
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Financial sub-scores
Computed from 3 filingsProvides construction and infrastructure services including building design, construction management, project execution and maintenance. Also manufactures engineering goods and offers procurement…
Serves businesses and property owners needing building and infrastructure projects, including residential clients and commercial developers. Targets buyers seeking design, construction, maintenance,…
Financial Health
StrongStrong · Profitable, Hiring · 27% CAGR over 2y
Location
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Financial sub-scores
Computed from 5 filingsProvides commercial and domestic construction and interior fit‑out services, including carpentry and joinery, glazing, flooring installation, wall and ceiling works, waterproofing, interior…
Serves commercial clients needing office fit-outs and interior construction, as well as homeowners seeking kitchen, bathroom and whole-home renovation work.
Financial Health
StrongStrong · Growing, Hiring · 32% CAGR over 5y
Location
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How Spectra usage is detected
Company data
Detected companies are joined to UK Companies House records and XBRL accounts data. 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.
Detection
Firmbase crawls the public website of actively-trading UK companies and fingerprints the technologies present: tracking scripts, embedded forms, chat widgets, CMS markers and similar signatures. A company is included in this list when one or more of the technology's signatures are found on its site; closely-related variants of the same product are grouped under one name. Detection covers what is visible on the public web — a company using the technology purely internally, with no website footprint, will not appear. Counts are therefore a conservative floor, not a ceiling. construction companies are identified using Firmbase's semantic classification of company activity, built from filings, websites and registered SIC codes rather than SIC codes alone. The detected counts and share figures on this page are computed within that sector cohort, so "share" always means share of construction companies with a detectable system — not of all UK companies.
Freshness
Websites are re-crawled on a rolling basis and the underlying company data is refreshed from Companies House continuously; filings appear within days of submission. The list and its statistics are regenerated when the detected cohort moves meaningfully. You can see the last-updated timestamp near the top of the page.
Spectra is a trademark of its respective owner. Firmbase is not affiliated with, sponsored by, or endorsed by the trademark owner.
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Frequently asked questions
How many UK construction companies use Spectra?
What share of UK construction companies run Spectra?
How is Spectra usage detected?
What size construction companies use Spectra in the UK?
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