Companies Using Concrete CMS in London: 80 Active Firms (2026)
Companies using a web CMS publish and manage website content through structured templates, in the London market.
Editorial and web-operations teams are the main buying centres for Concrete CMS users, with IT usually involved where hosting, patching and access control sit outside an agency retainer. Adoption tends to signal an organisation that needs governed publishing rather than a brochure site: service pages, customer updates, policy material, support content and campaign pages all need controlled workflows. The buyer profile is usually business-to-business or public-facing, not consumer-app led. Engagements look more like retained maintenance, template extension, analytics governance and accessibility work than short-lived redesign projects, which points to some budget discipline and an in-house stakeholder who owns the website.
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Across London, 80 active trading companies are running Concrete CMS on public websites, making this a small adoption cohort rather than a general CMS market proxy. Reported employment across the cohort is 294 people, so the footprint is visible but fairly concentrated; many adopters appear to be lean organisations with external web-build or support capacity around them. The commercial shape also leans towards maintained sites rather than platform estates: only a small minority clear mid-market turnover thresholds, while recent incorporations form a limited slice of the group.
Personal data collection through forms, analytics tags and cookies brings Concrete CMS users within UK GDPR and the Data Protection Act 2018, with the ICO the relevant regulator for privacy and data-handling practice. Public-sector website projects add a separate accessibility layer: the Public Sector Bodies website and app accessibility regulations require public bodies to meet WCAG 2.2 AA where applicable and publish an accessibility statement. GOV.UK guidance also keeps legal responsibility with the public sector body when build or operation is outsourced, which matters for CMS procurement, support contracts and change-control evidence.
Adoption appears likely to be shaped less by new CMS selection than by maintenance pressure inside existing estates. London users look like organisations with continuing editorial needs, but not always large in-house web teams, so agency support and managed hosting will remain part of the operating model. Privacy-by-design, accessibility testing and evidence of patching tend to matter more as buyers formalise procurement. Consolidation may also pull some workloads into broader digital experience suites, while specialist CMS users keep systems where editorial control, lower migration risk and supplier familiarity outweigh the case for replacement.
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
Adoption by company size
Adoption of Concrete CMS rises with company size across the trading companies in this cohort. 0% of the 532,485 companies with under 10 employees run Concrete CMS (70 detected). 0.1% of the 15,364 companies with 10–50 employees run Concrete CMS (11 detected). 0.1% of the 1,763 companies with over 50 employees run Concrete CMS (2 detected). That is a 0.1% gap between the over 50 employees and under 10 employees bands.
80
Active firms
2026
6
Above £5M turnover
Trading firms
£607k
Median UK turnover
Filed accounts
160
Verified directors
Across this cohort
Top companies using Concrete CMS in London
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.
Publishes national and regional newspapers and digital news brands, producing journalism covering news, sport and entertainment, and distributing content across print, websites and social media while…
Serves businesses seeking advertising and commercial media services, as well as consumers who read national and regional news, entertainment and sport content across the UK, Ireland and online…
Location
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Provides charitable support to NHS hospitals through fundraising, grants, volunteering programmes, and arts initiatives. Funds hospital building improvements, medical equipment and clinical research,…
Serves patients, NHS staff and hospital communities at five London hospitals, while engaging individual donors, fundraisers, volunteers and grant applicants connected to those hospitals.
Location
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Financial sub-scores
Computed from 5 filingsOperates an online comparison platform for international money transfer services, providing exchange rate data, provider comparisons, reviews, and tools such as currency converters and rate alerts to…
Serves individuals and businesses making cross-border payments, including expats, overseas property buyers, inheritance recipients, e-commerce sellers, payroll teams and companies managing mass…
Financial Health
StrongStrong
Location
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Operates an online platform for the marketing and advertising industry, providing agency directories, campaign case studies, industry insights, and tools that connect brands with creative and…
Serves B2B brand-side marketing teams and creative, media and digital agencies, with registered user categories for brands and agencies.
Financial Health
N/AN/A
Location
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Provides agency search and pitch consultancy services for brands, helping identify, evaluate and appoint marketing and creative agencies. Operates an online intelligence hub offering industry…
Serves B2B brand marketing teams and marketing leaders seeking agency partners, plus advertising, creative and media agencies looking to join its agency community and reach brand clients.
Location
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Computed from 3 filingsRepresents companies in the maritime engineering and business sector through a membership organisation that provides industry advocacy, networking events, specialist groups, policy engagement, and…
Serves UK maritime businesses and employers, including companies in commercial marine, maritime defence and security, autonomous systems, marine science and technology, ports and terminals, and…
Financial Health
WeakWeak · -37% CAGR over 2y
Location
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Computed from 3 filingsOrganises and sells escorted small‑group tours and travel packages across Central and South America. Offers structured itineraries including adventure travel, trekking, cycling, wildlife tours,…
Sells to consumers seeking escorted, small-group and adventure travel in Central and South America, including active travellers and holidaymakers wanting curated tour packages, cruises and…
Financial Health
WeakWeak · Hiring · 29% CAGR over 2y
Location
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Provides contract research and biopharmaceutical development services to pharmaceutical and biotechnology companies, including Phase I–IV clinical trial management, regulatory strategy and…
Serves pharmaceutical, biotechnology and biopharmaceutical companies, targeting clinical development, regulatory, market access and medical affairs teams involved in drug development and…
Location
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Operates a public policy research institute focused on economic and social conditions linked to national prosperity. Produces the Legatum Prosperity Index, publishes research and commentary, and runs…
Serves individuals, students, fellows, interns, event attendees and campaign supporters interested in national prosperity, public policy ideas and debanking issues.
Location
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Provides estate agency and property consultancy services, including residential property sales, lettings and acquisitions, marketing of country houses, farms and estates, and advice on rural land and…
Serves property buyers, sellers, landlords, tenants and renters, plus owners and investors in country houses, estates, farms and land. Targets both private individuals and commercial rural property…
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Manages equity investment funds and investment trusts for investors. Operates pooled vehicles focused on long‑term holdings in listed companies across UK, global, Japanese and North American markets,…
Serves investors and financial intermediaries seeking long-term equity exposure through pooled funds and investment trusts, across UK, global, Japanese and North American strategies.
Location
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Financial sub-scores
Computed from 5 filingsProvides hair loss diagnosis and treatment services for men and women through specialist clinics and online consultations. Dispenses prescription medications and hair growth treatments via an…
Serves consumers, primarily men and women experiencing hair loss, including pattern hair loss, telogen effluvium, diffuse thinning and alopecia areata, via in-clinic and online routes.
Financial Health
WeakWeak · -5% CAGR over 4y
Location
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Computed from 3 filingsProvides alternative investment fund management and operational support services to listed investment companies. Activities include fund administration, fund accounting, company secretarial services,…
Serves B2B financial-services clients: London Stock Exchange-listed investment companies across multiple sectors and asset classes, plus their investment managers seeking outsourced operational and…
Financial Health
WeakWeak
Location
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Computed from 5 filingsOperates a contemporary art gallery representing international artists. Organises gallery exhibitions and participates in art fairs, and produces publications, videos and other materials related to…
Serves contemporary art collectors, museums, curators and art institutions engaging with represented artists through gallery exhibitions, art fairs and publications in the international contemporary…
Financial Health
StrongStrong · Growing, Hiring · 16% CAGR over 4y
Location
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Computed from 5 filingsProvides vocational training courses for the construction and rail sectors, including CPCS plant operator training, rail training, Driver CPC courses, first aid training, and NVQ accreditation…
Serves employers and individual workers needing occupational training, particularly in rail, construction plant/CPCS, professional driving, first aid and NVQ qualifications, through regional depots.
Financial Health
StrongStrong
Location
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Computed from 3 filingsInvests in, owns and manages residential build‑to‑rent properties, offering apartments and flats for rent. Provides property letting services, tenant support, maintenance reporting, and online…
Serves private residential renters, including students, seeking managed flats and rental accommodation, with support for existing tenants handling repairs and rent queries.
Financial Health
StrongStrong · 0% CAGR over 1y
Location
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Computed from 5 filingsDevelops and maintains an open‑source software platform for building, deploying and running catastrophe risk models. Provides a simulation engine, APIs, data standards and development tools used by…
Serves global (re)insurance firms, catastrophe model vendors, academic and research groups, and risk professionals, with access also intended for wider organisations seeking to understand risk and…
Financial Health
HealthyHealthy · Growing · 0% CAGR over 4y
Location
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Provides insurance and reinsurance legacy and retrospective solutions, including acquiring portfolios of insurance liabilities and managing claims run‑off. Also offers specialist underwriting through…
Serves B2B insurance and reinsurance companies globally, including carriers and insurance groups with legacy liabilities and teams responsible for risk, capital and claims portfolios.
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Provides legacy and retrospective reinsurance and insurance solutions, including acquiring and managing discontinued insurance portfolios, assuming liabilities from insurers and reinsurers,…
Targets B2B decision-makers at global insurers and reinsurers, including carriers managing legacy liabilities, capital constraints and specialist underwriting needs in the insurance and reinsurance…
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Supports development and delivery of veterinary vaccines, medicines, and diagnostics for livestock through partnerships with researchers, manufacturers, and regulators. Works on product development,…
Serves small-scale livestock producers, especially women and rural families, in Africa and South Asia, alongside animal health manufacturers, regulators and partners involved in veterinary medicines…
Location
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Financial sub-scores
Computed from 4 filingsNon-profit organisation delivering sustainable development and conservation projects, including education, community health, water and sanitation (WASH), environmental conservation and rural…
Targets individual donors, fundraisers, volunteers and corporate CSR sponsors interested in conservation and development, while serving local communities in southeast Madagascar.
Financial Health
DistressedDistressed · -74% CAGR over 3y
Location
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Computed from 3 filingsInvests in, owns and manages residential build‑to‑rent properties. Markets apartments and studios for rent and provides property management, tenant support, and maintenance services for residential…
Sells to residential renters in the UK, including students and individuals seeking contemporary, value-for-money private rented homes with ongoing tenant support.
Financial Health
HealthyHealthy · Hiring · 3055% CAGR over 2y
Location
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Computed from 3 filingsOperates residential care homes for older people, providing nursing, dementia, respite and end‑of‑life care. Offers accommodation, personal care and wellbeing activities for long‑term residents and…
Serves older adults and their families seeking residential, nursing, dementia, respite, end-of-life or homecare support, including residents and day visitors in Cambridge, Essex, London and Milton…
Financial Health
StableStable · -90% CAGR over 2y
Location
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Computed from 5 filingsProvides project management consulting and digital project controls services using data analytics and software tools to monitor project performance. Also offers strategic advisory, technology and…
Serves B2B and public-sector organisations delivering major projects, including clients in transport infrastructure, defence and energy, from small startups to large firms.
Financial Health
StableStable · -54% CAGR over 4y
Location
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Develops and manages large strategic land sites for residential and mixed‑use communities. Delivers infrastructure, planning, and site preparation to create serviced land for housebuilders and…
Serves public-sector bodies, landowners, housebuilders and commercial occupiers involved in large-scale strategic land, new community and commercial development projects.
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Computed from 2 filingsProvides own‑brand food, clothing, homeware and beauty products through retail stores and online platforms, and offers financial services including banking, credit and insurance via its bank and…
Serves consumers in the UK and internationally shopping for own-brand food, fashion, home and beauty products, alongside retail banking and services customers.
Financial Health
HealthyHealthy · -12% CAGR over 1y
Location
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Provides alternative investment fund management and support services to London Stock Exchange‑listed investment companies, including fund administration, accounting, company secretarial, investor…
Serves B2B clients: London Stock Exchange-listed investment companies across varied sectors and asset classes, plus their investment managers requiring outsourced operational and governance support.
Financial Health
N/AN/A
Location
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Provides contract research and biopharmaceutical development services, including design and management of Phase I–IV clinical trials, regulatory strategy and submissions, market access consulting,…
Serves biotech, pharmaceutical and biopharmaceutical companies, including clinical development, regulatory, market access and medical affairs teams managing drug development from early phase trials…
Location
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Computed from 2 filingsDesigns and arranges tailor‑made tours across the UK and Ireland for groups, organisations, travel agents and independent travellers. Provides destination management services including itinerary…
Serves international travel trade professionals and tour operators, organisations arranging member trips, academic and non-profit groups, companies, professional bodies, and individuals or families…
Financial Health
StableStable · 0% CAGR over 1y
Location
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Computed from 5 filingsProvides channel sales and marketing support services for cyber security and cloud technology companies, including telemarketing, sales training, performance assessments, partner development, and…
Serves B2B cyber and cloud technology companies, including vendors, distributors, resellers, MSPs, MSSPs and systems integrators, plus channel partners and technology executives.
Financial Health
StrongStrong · Growing, Hiring · 41% CAGR over 4y
Location
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Computed from 3 filingsOperates residential care homes for older people, providing accommodation and personal care including residential, nursing, dementia, respite and end‑of‑life care, along with wellbeing activities and…
Serves older adults and their families seeking residential, nursing, dementia, respite and end-of-life care, plus homecare, in Cambridge, Essex, London and Milton Keynes.
Financial Health
DistressedDistressed · -90% CAGR over 2y
Location
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Computed from 4 filingsProvides financial planning and advisory services, including pensions planning, investment advice, life and income protection insurance, mortgage advice, and employee benefits consulting, supported…
Serves UK-based consumers seeking personal financial advice, alongside businesses looking for business protection and employee benefit support.
Financial Health
DistressedDistressed · -13% CAGR over 3y
Location
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Computed from 5 filingsProvides structural engineering consultancy services for building and infrastructure projects, including structural design and analysis for new‑build and refurbishment developments. Works on projects…
Serves organisations commissioning building projects in the UK and internationally, including commercial, health, hotel, leisure, community, residential, retail, transport and public-sector clients.
Financial Health
HealthyHealthy · -7% CAGR over 4y
Location
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Computed from 3 filingsDevelops large strategic land sites and master‑planned communities, delivering infrastructure, serviced land and commercial development plots for housebuilders and businesses, and coordinating…
Serves housebuilders, commercial occupiers and public-sector/infrastructure partners involved in large strategic land sites and new communities.
Financial Health
StableStable
Location
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Computed from 2 filingsProvides asset-backed investment solutions including global property investments and private equity. Manages diversified portfolios and protected investment structures aimed at generating returns for…
Serves institutional investors and partners seeking exposure to diversified global property and established private equity portfolios, including cross-border, asset-backed investment allocations.
Financial Health
DistressedDistressed
Location
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Computed from 3 filingsOperates care homes and homecare services for older people, providing residential, nursing, dementia, respite and end‑of‑life care. Also supports residents and day visitors with daily living,…
Serves older adults and their families seeking residential, nursing, dementia, respite or end-of-life care, plus homecare and day visitor support in Cambridge, Essex, London and Milton Keynes.
Financial Health
DistressedDistressed · -89% CAGR over 2y
Location
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Computed from 4 filingsProvides site access management services for construction projects, including on-site access controllers, a remote operations control centre for workforce support, and a cloud-based platform for site…
Serves B2B construction and infrastructure contractors, including major rail and civil engineering firms, joint ventures and project teams needing site access, safety and compliance support.
Financial Health
StableStable · Hiring · 10% CAGR over 3y
Location
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Computed from 5 filingsArranges ski holidays in Megève, France, offering bookings for catered chalets, chalet hotels, self‑catered apartments and partner hotels. Provides holiday planning information, special offers, and…
Serves B2C leisure travellers, families and ski groups booking Megève ski holidays, including guests seeking catered chalets, self-catered apartments, hotels, short breaks and family-friendly trips.
Financial Health
HealthyHealthy · -6% CAGR over 4y
Location
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Computed from 5 filingsProvides independent financial advice and planning for individuals and businesses, covering mortgages, pensions, investments, savings, life insurance and income protection, and business protection,…
Serves private individuals and families, business owners and companies, and trustees seeking independent financial advice across mortgages, pensions, investments, protection and business financial…
Financial Health
DistressedDistressed · 0% CAGR over 4y
Location
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Provides water treatment and hygiene services for buildings, including Legionella risk management, water system cleaning, and drinking water quality testing and monitoring. Conducts air quality and…
Serves businesses and institutions managing built-environment premises, including facilities management, healthcare, hospitality, manufacturing, food and beverage, pharmaceutical, cosmetics,…
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Computed from 4 filingsProvides genealogical and legal research services, tracing heirs and beneficiaries for unclaimed estates. Conducts family history investigations, asset and probate research, and supports solicitors…
Serves potential beneficiaries of unclaimed estates, solicitors and probate professionals handling missing heirs, and public sector bodies dealing with empty homes and related asset matters.
Financial Health
DistressedDistressed
Location
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Computed from 5 filingsProvides financial advisory services including mortgage advice, pension planning, investment advice, personal and business protection, retirement planning, and general insurance through regulated…
Serves UK consumers and families, including homebuyers, retirement planners, investors and people arranging protection cover, with some services for business owners needing protection.
Financial Health
DistressedDistressed · -10% CAGR over 4y
Location
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Computed from 5 filingsProvides maintenance, refurbishment and construction of electricity distribution infrastructure for UK distribution network operators, including overhead power lines, underground distribution…
Serves UK Distribution Network Operators and utility-sector buyers responsible for electricity distribution infrastructure, including teams procuring overhead line, underground network, public…
Financial Health
HealthyHealthy · -68% CAGR over 4y
Location
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Develops and operates an offshore wind farm generating electricity from wind turbines. Manages offshore substations and cable infrastructure that collect and transmit up to 950MW of renewable…
Serves the UK electricity market, supplying power into the National Grid for homes and businesses. Also engages public-sector stakeholders, local communities, maritime users and supply-chain…
Location
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Computed from 2 filingsSupplies timber and building materials to trade and public, including decking, fencing, gates, sheds, mouldings and skirting. Provides sand, cement, fixings and DIY supplies, with timber cut‑to‑size…
Sells to both trade and public customers, including builders, specified trades and individual consumers buying timber, fencing, decking and building supplies. Primarily serves customers in London,…
Financial Health
WeakWeak · -9% CAGR over 1y
Location
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Computed from 3 filingsOperates a residential care home providing accommodation, personal care and support for elderly residents, including those with dementia or nursing needs. Services include long‑term residential care,…
Serves older adults and their families seeking residential, nursing, dementia, respite, end-of-life and homecare support in Cambridge, Essex, London and Milton Keynes.
Financial Health
DistressedDistressed · -90% CAGR over 2y
Location
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Computed from 3 filingsOperates a residential care home providing accommodation and personal care for elderly residents. Services include residential, nursing, dementia, respite, and end‑of‑life care, supporting…
Serves older adults needing residential, nursing, dementia, respite or end-of-life care, plus families arranging care for loved ones, in Cambridge, Essex, London and Milton Keynes.
Financial Health
DistressedDistressed · -89% CAGR over 2y
Location
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Computed from 3 filingsProvides financial planning and advisory services including retirement and pension planning, savings and investments advice, mortgage brokerage, personal and business protection insurance, and…
Serves UK consumers, homeowners, savers, pre-retirees and retirees, plus business owners seeking financial protection, with advice aimed at individual clients and businesses rather than a specific…
Financial Health
StableStable · Hiring · 123% CAGR over 2y
Location
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Computed from 5 filingsProvides international postal and distribution services for business mail, publications, and e‑commerce shipments. Handles mailing management, trackable deliveries, and related distribution support…
Serves B2B organisations with postal, publication and ecommerce distribution needs, including publishers, online retailers, membership bodies and institutions sending items to customers…
Financial Health
HealthyHealthy · -3% CAGR over 5y
Location
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Computed from 5 filingsProvides design, consultancy, supply and installation services for building envelope systems in construction projects, including cladding, curtain walling, windows and doors, roofing, architectural…
Serves B2B construction industry clients nationwide, including project teams and organisations commissioning large-scale commercial building projects.
Financial Health
HealthyHealthy · Hiring · 10% CAGR over 5y
Location
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Key facts
About 7% of the trading cohort reports turnover above £5M (6 of 80 firms) — the rest sits below that revenue band.
8% of the cohort was incorporated since 2022 (7 firms), so a sizeable share is in its first few filing cycles.
This London cohort tends to sit in service-heavy website estates: 58.8% also run a content-delivery or security layer, while 45.0% show bot-protection tooling.
Healthcare providers are the largest visible sector group at 26.3%, followed by real estate and property at 12.5% and construction at 11.3%.
UK organisations processing personal data through CMS-backed websites fall under UK GDPR and the Data Protection Act 2018, with the ICO as the relevant data-protection regulator.
Public sector website projects face the Public Sector Bodies (Websites and Mobile Applications) (No. 2) Accessibility Regulations 2018, including WCAG 2.2 AA where applicable.
W3Techs places this CMS at 0.1% of websites with a known CMS and less than 0.1% of all websites, suggesting a niche installed base rather than a default web stack.
What else do Concrete CMS users run?
Share of the 80 Concrete CMS-running UK companies where each technology was also detected. As of June 2026.
Who runs Concrete CMS in the UK?
By sector
Sectors overlap, so shares need not sum to 100%.
By financial health
From filed accounts; firms with fewer than two filings show as insufficient history.
1
Median headcount
£607.2K
Median UK turnover
7.5%
Above £5M turnover
7
Incorporated since 2022
Verified directors — included in the file
Director names and roles for these 129 companies, alongside financials and websites, in one Excel + CSV file.
How Concrete CMS 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.
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.
Concrete CMS is a trademark of its respective owner. Firmbase is not affiliated with, sponsored by, or endorsed by the trademark owner.
Concrete CMS elsewhere
Frequently asked questions
How many companies in London use Concrete CMS?
How is Concrete CMS usage detected?
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