Construction Companies Using Blocksy in the UK: 65 Active Firms (2026)
Construction businesses using a detected CMS theme deliver building, contracting and related services across the UK market.
For contractors and specialist subcontractors, a theme-led CMS site usually sits outside the core operating stack but still carries commercial work: project credentials, tender reassurance, recruitment, insurance signals and enquiry capture. Adoption tends to point to a firm with enough marketing or office capacity to keep a public site current, but not necessarily a large digital team. In construction, that often means a practical buyer: owner-managed or mid-market operators serving residential, commercial and public-sector customers, where website spend is modest and the site must support trust-building before a phone call, site visit or pre-qualification process.
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UK adoption is small but visible: 65 actively trading construction firms are running this detected theme. Their disclosed headcount totals 448, giving the group a lean employment footprint rather than a labour-intensive sample of main contractors. Within detected CMS themes in construction, the theme ranks third, with 12.7% share across 510 sector sites. Regional skew is concentrated in the South East at 23.1% and London at 21.5%, followed by Yorkshire and The Humber and the North West at 9.2% each, then Scotland at 7.7%. That pattern fits a web-presence tool used by mixed trade, fit-out and property-adjacent operators rather than by a single construction niche.
Construction websites sit beside a regulated delivery environment rather than inside a unified sector licence. HSE duties under the Construction (Design and Management) regime shape how contractors describe roles, risk management and competence, while HMRC's Construction Industry Scheme affects payment administration across subcontractor chains. OPSS responsibility for construction products, and its work with the Building Safety Regulator within HSE, adds a further layer for firms referencing materials or building-safety credentials online. For companies running a theme-led CMS, procurement risk is less about the site technology itself than about whether public claims, case studies, forms and cookie notices align with operational obligations and GDPR expectations.
Adoption appears likely to remain pragmatic rather than platform-led. Contractors using theme-led sites tend to value low administrative overhead, familiar publishing workflows and enough design control to show projects, accreditations and vacancies without commissioning a bespoke build. Some migration pressure has been coming from bundled hosting, security and analytics stacks, which can make lighter CMS themes attractive for firms without in-house web teams. At the same time, construction buyers are becoming more sensitive to evidence trails, safety language and subcontractor governance, so website templates that cannot carry credible project detail may feel less adequate as firms professionalise their direct-channel presence.
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 Blocksy varies by company size across the trading UK construction companies in this cohort. 0% of the 231,908 companies with under 10 employees run Blocksy (59 detected). 0.1% of the 8,701 companies with 10–50 employees run Blocksy (10 detected). 0% of the 662 companies with over 50 employees run Blocksy (0 detected).
65
Active firms
2026
12.7%
Of detected WordPress themes share
UK construction
4
Median headcount
Filed accounts
136
Verified directors
Across this cohort
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Key facts
About 6% of the trading cohort reports turnover above £5M (4 of 65 firms) — the rest sits below that revenue band.
21% of the cohort was incorporated since 2022 (14 firms), so a sizeable share is in its first few filing cycles.
Among construction businesses with a detectable CMS theme, this theme ranks third by detected share at 12.7% (65) of a 510-company detectable-system base, behind two larger theme cohorts at 23.7% (121) and 19.8% (101).
The co-running stack points to relatively standard marketing-site infrastructure: 46.2% (30) show page-building tooling, 36.9% (24) show SEO tooling and 35.4% (23) show analytics tooling.
Registered offices skew towards the South East and London, which account for 23.1% (15) and 21.5% (14) of the cohort respectively.
HSE’s Construction (Design and Management) Regulations 2015 place duties on construction roles to plan work, appoint suitable people, coordinate activity and consult workers.
WordPress themes market share among UK Construction
Share of the 510 UK Construction with a detectable system. As of June 2026.
What else do Blocksy-running Construction run?
Share of the 65 Blocksy-running UK companies where each technology was also detected. As of June 2026.
Where Blocksy 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.
4
Median headcount
£480.5K
Median UK turnover
6.2%
Above £5M turnover
14
Incorporated since 2022
Verified directors — included in the file
Director names and roles for these 93 businesses, alongside financials and websites, in one Excel + CSV file.
Top UK Construction using Blocksy
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, restoration and refurbishment services, delivering building projects from small works to complex schemes. Works across sectors including heritage, residential, education,…
Serves public and private sector clients across Yorkshire and the North, including leisure, faith, residential, industrial, heritage, healthcare and education organisations, plus framework and small…
Financial Health
StableStable · -71% CAGR over 4y
Location
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Financial sub-scores
Computed from 3 filingsProvides internal fit-out services for commercial construction projects, including installation of internal partitioning, suspended ceilings, plastering, and SFS (steel framing system) structures.…
Serves B2B customers in commercial construction, selling to principal contractors and direct end users needing internal fit-out packages. Targets clients involved in tender-stage and live building…
Financial Health
WeakWeak · 0% CAGR over 2y
Location
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Computed from 3 filingsProvides drywall and interior finishing services for construction projects, including partition systems, suspended and acoustic ceilings, plasterboard lining, plastering, tape and jointing, glazed…
Serves B2B construction clients, including main contractors, architects and manufacturers, involved in high-end residential, commercial fit-out and large-scale construction projects across the South…
Financial Health
StrongStrong · Hiring · 22% CAGR over 2y
Location
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Computed from 5 filingsProvides roofing contracting services, supplying and installing roofing systems for commercial and public sector buildings. Services include built-up felt membranes, liquid roofing coatings, green…
Serves public sector and commercial clients, including local councils, housing associations, NHS trusts, main contractors, surveying practices, schools and infrastructure operators needing…
Financial Health
HealthyHealthy · Hiring · 4% CAGR over 4y
Location
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Computed from 5 filingsDesigns, manufactures and installs modular buildings for the healthcare sector. Provides bespoke 3D design, off‑site fabrication, on‑site construction and fit‑out, landscaping, and project management…
Serves NHS organisations and private healthcare providers across the UK, including hospitals and clinics needing additional clinical space, limited-site expansion, or specialist diagnostic and…
Financial Health
StrongStrong · 0% CAGR over 2y
Location
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Computed from 5 filingsProvides roofing and cladding services for industrial and commercial buildings, including installation of roof systems, wall cladding, photovoltaic (PV) solutions, and ongoing roof maintenance and…
Serves B2B and public-sector clients in commercial and industrial construction across Scotland, including main contractors, developers, facilities owners, schools, transport and civic building…
Financial Health
StrongStrong · Growing, Hiring · 4% CAGR over 4y
Location
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Computed from 5 filingsProvides building maintenance and repair services for residential properties, particularly in the social housing sector. Services include reactive emergency repairs, plumbing, heating, electrical…
Serves housing providers, local councils, social housing landlords and homeowners across Yorkshire, including local authorities and housing associations.
Financial Health
HealthyHealthy · Hiring · 8% CAGR over 4y
Location
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Computed from 5 filingsProvides interior contracting services for commercial and public sector buildings, including installation of hygienic wall cladding systems, suspended ceilings, partition walls, office fit-outs, and…
Serves construction-sector clients, including county councils, health services and educational institutions, plus commercial buyers needing interior fit-out and hygienic wall-cladding products for…
Financial Health
HealthyHealthy · -5% CAGR over 4y
Location
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Computed from 5 filingsProvides plumbing and heating installation services for domestic new‑build housing developments, including first‑fix and final system installation. Also installs renewable energy systems and offers…
Serves housebuilders, residential property developers and construction contractors needing plumbing, heating and renewable energy installations for domestic new-build projects in the Midlands.
Financial Health
StableStable · Hiring · 37% CAGR over 4y
Location
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Financial sub-scores
Computed from 3 filingsDesigns, supplies and installs movable wall and sliding folding partition systems for flexible interior spaces. Also provides acoustic wall and ceiling panels, sound absorption products, acoustic…
Serves architects, workplace design-and-build firms, facilities managers and public institutions such as libraries and colleges, as well as corporate offices needing configurable interiors and…
Financial Health
StableStable · -90% CAGR over 2y
Location
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Financial sub-scores
Computed from 3 filingsProvides brickwork contracting services for construction projects, supplying bricklayers and masonry teams for building developments and managing brickwork packages for residential and commercial…
Financial Health
StrongStrong · Hiring · 20% CAGR over 2y
Location
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Computed from 2 filingsProvides construction management and traditional contracting services for building projects. Offers project and cost management, development support, and health and safety advisory services across…
Serves property developers, construction clients and built-environment stakeholders across housing, education, commercial, healthcare and leisure sectors.
Financial Health
HealthyHealthy · -13% CAGR over 1y
Location
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Computed from 3 filingsDesigns, supplies and installs movable wall systems and sliding folding partitions for flexible interior spaces. Provides acoustic wall and ceiling panels, sound absorption products, acoustic design…
Serves commercial, education and public-sector clients, including offices, libraries and colleges, plus architects, workplace designers, design-and-build contractors and facilities teams managing…
Financial Health
HealthyHealthy · -89% CAGR over 2y
Location
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Computed from 5 filingsProvides scaffolding services for residential and commercial construction projects, including access scaffolds for renovations, re-roofing and developments. Also installs temporary roofing systems,…
Serves homeowners, tradespeople, developers, property management firms and organisations needing access support for residential, commercial and listed-building projects across Kent, London and the…
Financial Health
WeakWeak · 0% CAGR over 4y
Location
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Computed from 3 filingsProvides carpentry and bricklaying services for residential construction projects, including new-build housing developments. Delivers structural carpentry, custom woodwork, masonry, and brickwork,…
Serves housebuilders, residential developers and construction project managers in Kent, including teams managing multi-unit new-build developments, multi-phase schemes and individual construction…
Financial Health
StrongStrong · Growing, Hiring · 73% CAGR over 2y
Location
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Computed from 5 filingsProvides construction and engineering services focused on modular buildings, including installation, relocation and removal of modular units, exterior cladding, refurbishment, joinery installation,…
Serves B2B and public-sector clients needing modular building projects, including modular building manufacturers, contractors, schools, colleges, universities, utilities and leisure operators across…
Financial Health
HealthyHealthy · Growing · 0% CAGR over 4y
Location
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Computed from 5 filingsProvides flat roofing installation and waterproofing services, specialising in flame‑free seamless systems for roofs, balconies and walkways. Works as an approved contractor using modern roofing…
Serves property owners, developers and construction contractors needing flat-roof, balcony and walkway waterproofing, mainly in London and south-east England.
Financial Health
HealthyHealthy · -11% CAGR over 4y
Location
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Computed from 5 filingsProvides mechanical and electrical infrastructure services including design, installation, maintenance and project management. Works on energy centres, pumps, valves and building systems for airport…
Serves major corporations in London and the South East, particularly airport and aviation infrastructure operators with mechanical, electrical and project management requirements.
Financial Health
StrongStrong · Growing, Hiring · 26% CAGR over 4y
Location
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Computed from 5 filingsProvides asbestos removal services for residential, commercial and industrial properties, including licensed and non‑licensed removal, asbestos testing and surveys, waste collection and disposal, and…
Serves residential, commercial and industrial clients, including private homeowners, local authorities, contractors, housing providers, schools and healthcare settings, from single properties to…
Financial Health
StableStable · -5% CAGR over 4y
Location
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Computed from 5 filingsDesigns, manufactures and installs architectural solar shading and louvre systems for buildings, including aluminium and timber louvres, brise soleil, façade elements, acoustic louvres, plant…
Serves B2B construction customers, including architects, specifiers, main contractors and project teams delivering commercial and industrial buildings, including data centre and car park projects.
Financial Health
HealthyHealthy · Hiring · 6% CAGR over 4y
Location
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Computed from 5 filingsDesigns, manufactures and installs bespoke steel mezzanine flooring systems for warehouses, retail, offices and industrial facilities. Supplies related components including decking, staircases,…
Serves B2B customers across the UK and Europe, including logistics and warehousing operators, manufacturers, retailers, self-storage providers, automotive, automation, robotics, leisure and office…
Financial Health
StableStable · -6% CAGR over 4y
Location
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Computed from 2 filingsProvides construction and civil engineering services including excavation, demolition, earthworks, drywall, flooring and EIFS installation. Specialises in building retail petrol stations with tank…
Sells to businesses needing construction and civil works, especially retail fuel station owners, petroleum sector clients, and operators of convenience stores and restaurants, alongside commercial…
Financial Health
HealthyHealthy · 0% CAGR over 1y
Location
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Computed from 5 filingsProvides plant hire and groundworks services for utilities, commercial and domestic projects. Offers lorry loader crane hire, specialist machinery for pole handling and difficult access, muck…
Serves electrical utilities contractors/operators, commercial and industrial clients, and domestic customers needing plant hire, groundworks, landscaping or machinery support, mainly across the…
Financial Health
StableStable · Hiring · 3% CAGR over 4y
Location
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Computed from 3 filingsDesigns, fabricates and installs bespoke architectural metalwork and finishes, primarily for lift and escalator interiors. Produces panels, lighting features, signage and other metal components, and…
Serves B2B clients in the lift, escalator and construction sectors, including major lift companies, architects and main contractors working on high-specification building interiors and architectural…
Financial Health
StableStable · -5% CAGR over 2y
Location
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- S&S Concrete Flooring14307861
Financial sub-scores
Computed from 5 filingsProvides installation of industrial and agricultural concrete flooring, delivering poured and finished concrete floors for construction projects including commercial buildings, agricultural…
Serves UK businesses and contractors in industrial, agricultural and construction sectors, including farms, industrial sites and larger building projects.
Financial Health
WeakWeak · 0% CAGR over 4y
Location
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Computed from 4 filingsProvides construction and utility services including groundworks, drainage installation and repair, bricklaying, demolition, reactive maintenance, grab lorry hire and traffic management for…
Serves homeowners, landlords and commercial construction or property clients across Fife and Central Scotland with residential and commercial projects.
Financial Health
StrongStrong · Growing, Hiring · 19% CAGR over 4y
Location
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Computed from 5 filingsProvides road surfacing and civil engineering services, including asphalt laying, pothole and carriageway repairs, and infrastructure works. Also supplies plant and labour hire and installs Paco…
Serves local councils, community organisations and private sector clients needing surfacing and civil engineering project delivery, from small repairs to major road and infrastructure works,…
Financial Health
StrongStrong · Growing, Hiring · 5% CAGR over 4y
Location
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Computed from 4 filingsProvides interior fit‑out and furnishing services for hospitality and accommodation properties. Services include interior design, procurement of furniture and finishes, and installation for hotels,…
Serves B2B property investors, developers, hotel operators and main contractors involved in hospitality, hotel and serviced accommodation fit-out projects.
Financial Health
StrongStrong · Growing, Hiring · 13% CAGR over 3y
Location
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Computed from 5 filingsDesigns and manufactures modular buildings including offices, classrooms, welfare units, garden rooms, healthcare facilities, and residential lodges. Produces steel‑frame and container-based units in…
Serves UK businesses, schools and academies, construction firms, councils and public sector bodies, healthcare providers, hospitality venues, and consumers seeking garden rooms, lodges or static…
Financial Health
HealthyHealthy
Location
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Computed from 4 filingsProvides grab lorry hire, muck-away and bulk haulage for construction and landscaping projects. Collects and disposes of waste, carries out site clearance and demolition, recycles materials, and…
Serves construction, demolition, landscaping and groundwork customers needing haulage, waste removal, aggregates, topsoil and related site services in South Wales and the West.
Financial Health
StableStable · Hiring · 6% CAGR over 3y
Location
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Computed from 5 filingsProvides building maintenance, repair and refurbishment services for residential and commercial properties, including roofing, masonry work, painting and decorating, plumbing, and rainwater drainage…
Serves domestic homeowners and commercial clients, including property owners and occupiers, primarily in Bath and Wiltshire.
Financial Health
WeakWeak · -10% CAGR over 4y
Location
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Computed from 5 filingsProvides scaffolding services for construction projects, including supply, erection and dismantling of commercial and domestic scaffold structures. Designs and installs temporary roofs, support…
Serves commercial, industrial and domestic customers needing scaffolding, including construction contractors, roofing firms and property owners on projects from small works to larger bespoke…
Financial Health
StrongStrong · Growing · 0% CAGR over 4y
Location
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Computed from 4 filingsProvides design, construction, and project management services for residential and commercial building projects. Works on property development and refurbishment, overseeing planning, structural…
Serves private individuals, homeowners, property owners and businesses commissioning residential or commercial building projects.
Financial Health
StableStable · Hiring · 49% CAGR over 3y
Location
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Computed from 3 filingsProvides residential building and renovation services including house extensions, loft and garage conversions, kitchen and bathroom installations, conservatories, plastering, rendering, driveways,…
Serves homeowners and some commercial clients in the Bristol area seeking building contractors for domestic extensions, conversions, refurbishments, kitchens, bathrooms and related property works.
Financial Health
StableStable · 0% CAGR over 2y
Location
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Computed from 5 filingsFinancial Health
StableStable · Hiring · 26% CAGR over 4y
Location
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Computed from 3 filingsProvides exterior property maintenance and repair services including brickwork, roofing, chimney repair, repointing, carpentry, cladding, fascia, soffit and gutter replacement, and window…
Serves homeowners, local businesses and estate management companies across Bedfordshire with exterior property maintenance and reactive maintenance needs.
Financial Health
WeakWeak · -40% CAGR over 1y
Location
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Computed from 5 filingsProvides drainage services including drain unblocking, high‑pressure water jetting, CCTV drain surveys, trenchless drain lining, pipe repairs and excavations, scheduled maintenance, flood water…
Serves councils, housing associations, property managers, main contractors and commercial clients needing reactive and planned drainage support across London, Kent, Essex and surrounding areas.
Financial Health
HealthyHealthy · -67% CAGR over 4y
Location
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Computed from 4 filingsDevelops and builds new‑build residential housing developments. Designs and constructs multi‑home schemes and markets properties for sale to homebuyers, while also working with landowners and…
Sells to private homebuyers seeking modern new-build houses in Kent and nearby villages, including individuals and families looking for 2-5 bedroom homes in rural or commuter locations.
Financial Health
StableStable · -71% CAGR over 3y
Location
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Computed from 2 filingsProvides residential construction and renovation services including home extensions, loft conversions, property refurbishments and bathroom installations. Designs and builds interior and structural…
Serves private homeowners looking to improve, expand or renovate their living space, including households planning extensions, loft conversions, refurbishments or bathroom upgrades.
Financial Health
WeakWeak · 0% CAGR over 1y
Location
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Computed from 2 filingsProvides road recycling and regeneration services for road maintenance projects. Uses specialised machinery to repair damaged roads by reprocessing and reusing existing road stone and materials in…
Serves public-sector road maintenance bodies and road construction contractors in Ireland and Scotland responsible for repairing and maintaining damaged roads and reducing project costs and…
Financial Health
StableStable
Location
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Computed from 3 filingsProvides soundproofing installation services for residential and commercial properties, including wall, ceiling and floor soundproofing systems. Designs and fits acoustic treatments and noise…
Serves domestic and commercial customers in London and surrounding areas, including homeowners, residents with noisy neighbours, music room or studio users, and businesses needing office, wall,…
Financial Health
DistressedDistressed · 0% CAGR over 2y
Location
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Computed from 5 filingsFinancial Health
HealthyHealthy
Location
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Computed from 3 filingsProvides supply and installation of conservatories, orangeries, garden rooms, replacement windows and doors, including PVC and aluminium systems. Also installs solid conservatory roofs, blinds and…
Sells mainly to homeowners seeking replacement windows, doors, conservatories, orangeries and garden rooms, especially around Bristol and Thornbury. Also serves commercial customers needing blinds…
Financial Health
StableStable · 0% CAGR over 2y
Location
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Computed from 5 filingsSupplies and installs windows and doors for residential and commercial properties. Provides window and door replacement, custom measurement and design, and repair services, including maintenance and…
Serves homeowners and businesses in Anglesey and the Gwynedd area, including residential customers planning home improvements and commercial premises needing window, door or repair services.
Financial Health
DistressedDistressed · -14% CAGR over 5y
Location
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Computed from 5 filingsProvides scaffolding services for domestic and construction projects, including design, supply and installation of tailored scaffold structures. Prepares risk assessments, method statements and…
Serves homeowners, landlords and residential building contractors in London’s domestic property sector, including projects of varying size and complexity.
Financial Health
StrongStrong · Growing, Hiring · 8% CAGR over 5y
Location
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Computed from 5 filingsSupplies and installs resin bound driveway systems. Sells resin bound kits, permeable resins, aggregates, decorative gravel, drainage profiles and installation tools, and provides training and…
Serves UK homeowners seeking driveway upgrades and trade customers such as landscapers, driveway installers and contractors buying resin bound kits, aggregates, tools and drainage products.
Financial Health
StrongStrong · Hiring · 41% CAGR over 4y
Location
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Computed from 5 filingsProvides property maintenance and renovation services for residential and commercial buildings, including kitchen and bathroom refurbishments, home extensions, loft conversions, painting and…
Serves homeowners, landlords and businesses across Somerset needing residential or commercial property work, from small repairs to larger refurbishment projects.
Financial Health
HealthyHealthy
Location
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Computed from 2 filingsManufactures and installs uPVC and aluminium windows and doors for residential properties, including casement and sash windows, composite and patio doors, bifold systems, double glazing, and…
Serves homeowners and local businesses in Preston, Leyland, Chorley, Blackburn and the North West, especially property owners upgrading residential or commercial premises.
Financial Health
HealthyHealthy · Hiring · 66% CAGR over 1y
Location
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Computed from 3 filingsDesigns and constructs timber buildings using post-and-beam and timber-frame methods. Builds new homes, mobile homes, garages, barns, sheds and garden studios, supplying structures as flat-pack kits…
Serves private clients and self-builders seeking bespoke timber buildings, including new homes, mobile homes, garages, sheds, barns and garden studios, from drawings or early project ideas.
Financial Health
StableStable · -7% CAGR over 2y
Location
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Financial sub-scores
Computed from 5 filingsProvides bespoke stonemasonry services, fabricating and installing marble, granite and limestone features such as kitchen worktops, fireplaces and bathroom elements, and undertaking restoration of…
Serves affluent private homeowners, interior designers, architects and renovation contractors seeking bespoke stone features and historic stone restoration for residential and heritage properties in…
Financial Health
HealthyHealthy · Hiring · 11% CAGR over 4y
Location
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How Blocksy 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.
Blocksy 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 Blocksy?
What share of UK construction companies run Blocksy?
How is Blocksy usage detected?
What size construction companies use Blocksy in the UK?
What do Blocksy-running construction companies also run?
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