Companies Using RankMath SEO in Cardiff: 83 Active Firms (2026)
Cardiff companies running website SEO software use search-optimisation tooling on public sites across the city and surrounding metro area.
Adoption here points less to software production than to owned-channel operating discipline. The tool’s main job is to keep page titles, metadata, structured content and indexing signals under editorial control, usually inside the content-management workflow rather than a separate enterprise SEO suite. At the median, users of this SEO tooling have 7 staff and roughly £499k turnover, so the buying centre is often an owner-manager, marketer or external web agency rather than a dedicated search team. Use of the stack tends to signal a company that treats organic search as a managed acquisition channel, but still works with relatively modest operating budgets.
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Cardiff has 83 actively trading companies running this SEO software, a small but visible adoption base across local services and B2B supply chains. Reported employment totals 2,389 people, giving the cohort a footprint beyond founder-led websites even though many adopters remain small teams. Sector overlap is weighted towards field services and trades at 22.9%, construction at 15.7%, and smaller groups in advanced manufacturing and healthcare providers at 8.4% each. That mix fits a market where search visibility matters for enquiries, quotations and location-led demand, rather than only for online retail.
Search controls do not create a regulated activity in themselves, but the surrounding website stack can carry compliance work. Public-site analytics, enquiry forms, spam prevention and lead capture bring cookie consent, privacy notices and retention practices into scope under UK GDPR and ICO guidance. Procurement is usually lighter than for core finance or clinical systems, particularly where an agency manages the site. Larger adopters still tend to need change control around redirects, schema edits, administrator access and content approvals, because small website changes can affect search traffic, attribution and inbound demand.
Adoption appears likely to remain tied to website rebuilds and content-management renewal rather than standalone procurement. As more site functions are bundled into fewer administration layers, the dedicated SEO plug-in role may become less visible, though marketers still need control over metadata, schema and indexing rules. Cardiff’s cohort tends to favour practical lead-generation and local search tasks, so switching pressure will depend on agency preference, migration effort and tolerance for traffic disruption. Scale-up scarcity may keep adoption fragmented, with gradual tooling consolidation rather than a clear shift to enterprise SEO platforms.
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 RankMath SEO rises with company size across the trading companies in this cohort. 0.2% of the 25,287 companies with under 10 employees run RankMath SEO (49 detected). 2.3% of the 1,326 companies with 10–50 employees run RankMath SEO (30 detected). 3% of the 167 companies with over 50 employees run RankMath SEO (5 detected). That is a 2.8% gap between the over 50 employees and under 10 employees bands.
83
Active firms
2026
4
Above £5M turnover
Trading firms
7
Median headcount
Filed accounts
168
Verified directors
Across this cohort
Top companies using RankMath SEO in Cardiff
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 3 filingsManufactures and supplies disposable medical devices for ostomy care, including stoma bags, seals and related accessories. Provides stoma care products and educational resources for patients and…
Serves people living with a stoma and ostomy patients seeking ongoing stoma care products and support, alongside healthcare professionals needing education, case studies and wound care resources.
Financial Health
StableStable · -89% CAGR over 2y
Location
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Provides work-based training programmes including apprenticeships, employability training and professional development courses. Works with employers to deliver skills development, workforce…
Serves employers across Wales seeking workforce training, apprenticeships and skills development, plus apprentices and 16–19-year-old learners preparing for work, further training or self-employment.
Location
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Computed from 5 filingsProvides funeral director services, arranging burials, cremations, and memorial services. Offers direct cremations, traditional and bespoke funerals, religious and non‑religious ceremonies, and…
Serves bereaved families and individuals arranging funerals, cremations, burials or funeral plans across Cardiff, Caerphilly, Barry, Bridgend and wider South Wales.
Financial Health
HealthyHealthy · Hiring · 7% CAGR over 4y
Location
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Computed from 5 filingsProvides construction and civil engineering services including building development, refurbishment, and facilities management. Delivers projects for public and private sector clients such as…
Serves public and private sector organisations, including education providers, healthcare and care operators, airports, hotels, housing developers, and commercial property or industrial clients.
Financial Health
HealthyHealthy · Growing, Hiring · 4% CAGR over 4y
Location
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Computed from 3 filingsOrganises and delivers mass‑participation running events including marathons, half marathons and 10K races. Provides event management for road races and corporate challenges, supports charity…
Serves individual runners of all abilities, families and junior participants, elite and disabled athletes, running clubs, charity fundraisers and corporate teams taking part in mass-participation…
Financial Health
HealthyHealthy · Hiring · 13% CAGR over 2y
Location
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Computed from 3 filingsManufactures wood finishing and treatment products for interior and exterior use, including hard wax oils, varnishes, stains, waxes, decking oils, cleaners, primers, and wood restoration products,…
Serves professional woodworkers, decorators, flooring and joinery trades, alongside DIY homeowners and wood-care enthusiasts buying through online and decorating-centre channels.
Financial Health
StableStable · 0% CAGR over 2y
Location
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Computed from 3 filingsDesigns and installs solar photovoltaic systems for residential and commercial properties. Provides solar panel installation, battery storage integration, system monitoring, maintenance and repair…
Serves homeowners, domestic energy users and commercial property owners across Cardiff, Newport, Swansea, South Wales and Bristol, including participants in Wales’ Switch Together scheme.
Financial Health
StrongStrong · Growing, Hiring · 35% CAGR over 2y
Location
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Computed from 5 filingsDevelops software platforms for managing cell and gene therapy supply chains. Provides systems that track patients, materials, manufacturing, and logistics across clinical trials and commercial…
Serves cell and gene therapy developers and other advanced therapy organisations, from clinical trial teams to commercial supply chain stakeholders, including healthcare providers, logistics…
Financial Health
StableStable · -68% CAGR over 4y
Location
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Computed from 5 filingsProvides design, installation and maintenance of heating, ventilation and air conditioning (HVAC) systems. Offers air conditioning, heating controls, ventilation systems, and repair and servicing for…
Serves businesses and organisations across the UK in commercial, industrial, healthcare, education, retail, hospitality, leisure, financial services and restaurants, plus high-end residential project…
Financial Health
StableStable · -5% CAGR over 4y
Location
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Computed from 5 filingsOnline retailer of luxury wristwatches, offering new and limited‑edition models from brands such as Rolex, Patek Philippe, Audemars Piguet, Omega and Franck Muller. Also provides watch trade‑in or…
Sells to consumers and watch collectors seeking luxury men’s and women’s timepieces from brands such as Rolex, Patek Philippe, Audemars Piguet, Omega and Franck Muller, with global shipping and…
Financial Health
StrongStrong · Hiring · 15% CAGR over 4y
Location
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Computed from 5 filingsSupplies boiler and heating system spare parts through an online store, including burners, pumps, valves, sensors, heat exchangers, flues, and control components for gas and oil boilers from multiple…
Serves heating and plumbing trade customers, including boiler engineers, installers, facilities maintenance teams and commercial heating contractors needing parts for major boiler and heating brands.
Financial Health
StableStable · 0% CAGR over 4y
Location
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Computed from 3 filingsProduces television and digital content including documentaries, specialist factual series, entertainment formats and scripted programmes. Develops and delivers programmes for broadcasters such as…
Serves TV broadcasters and commissioning editors, including BBC, Channel 4 and S4C, across documentary, factual, entertainment, scripted and digital content markets.
Financial Health
DistressedDistressed · -27% CAGR over 2y
Location
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Computed from 4 filingsManufactures, supplies, installs and maintains industrial and commercial door systems including roller shutters, insulated shutters, sectional doors, steel fire doors, automatic doors, gates and…
Serves business owners, building occupiers and facilities teams in Cardiff and South Wales, plus some residential customers requiring garage door support.
Financial Health
DistressedDistressed
Location
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Computed from 3 filingsSupplies and installs residential windows, doors and conservatories, including uPVC, aluminium, sash and bi-fold systems. Also provides warm roof installations, integral blinds, and maintenance and…
Serves homeowners in Barry and the Vale of Glamorgan seeking residential windows, doors, conservatories, warm roofs, and related maintenance or repair services.
Financial Health
DistressedDistressed · -7% CAGR over 2y
Location
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Computed from 3 filingsOperates day nurseries and preschools providing childcare and early years education for children aged 6 weeks to 5 years. Uses a Montessori‑inspired approach with structured play, outdoor learning…
Serves parents and families in Cardiff seeking nursery, preschool, wraparound, term-time or holiday childcare for children aged 6 weeks to 5 years.
Financial Health
HealthyHealthy · Hiring · 11% CAGR over 2y
Location
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Computed from 3 filingsProvides home healthcare and nursing services, delivering personalised care for patients in their own homes. Services include in-home nursing, personal care support, and ongoing assistance from…
Serves private patients and families needing home nursing, personal care and healthcare support, with emphasis on people receiving care at home in Cardiff and Newport.
Financial Health
HealthyHealthy · -50% CAGR over 2y
Location
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Computed from 5 filingsProvides vehicle repair, maintenance, and diagnostic services, including car servicing, brake replacement, air‑conditioning servicing, DPF cleaning, and electrical repairs. Also offers performance…
Serves private motorists in Cardiff and the Vale of Glamorgan, particularly owners of prestige, luxury, sports, high-performance, classic and vintage vehicles.
Financial Health
WeakWeak · Hiring · 7% CAGR over 4y
Location
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Computed from 5 filingsOperates a discount retail store selling a wide range of consumer goods including household items, toiletries, DIY tools, electrical accessories, toys, stationery, pet supplies, homeware, textiles,…
Serves local consumers and households in Cardiff, particularly Roath shoppers seeking discount everyday goods for home, DIY, pets, gifts, stationery, travel, parties and personal care.
Financial Health
DistressedDistressed · -10% CAGR over 5y
Location
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Computed from 5 filingsProvides insurance brokerage and comparison services for individuals and businesses, arranging policies such as life insurance, income protection, private medical cover, business protection, and…
Serves UK consumers, families, expatriates and homeowners, plus businesses and employers seeking staff benefits, key person cover, business protection and private medical insurance.
Financial Health
HealthyHealthy
Location
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Computed from 5 filingsProvides temporary healthcare staffing to care homes and healthcare facilities, supplying nurses, carers and support workers. Recruits, vets and places staff to cover short‑term shifts or ongoing…
Serves healthcare facilities in Wales, including care homes and nursing settings, that need temporary carers, support workers and nurses for short-term gaps or ongoing cover.
Financial Health
WeakWeak · Hiring · 15% CAGR over 4y
Location
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Computed from 5 filingsProvides recruitment and staffing services, sourcing permanent and contract professionals across technology, digital, finance, and other sectors. Operates a job board and supports employers with…
Serves employers hiring permanent, interim, temporary and contract staff across technology, finance, engineering, public sector and other industries, alongside candidates seeking UK and international…
Financial Health
HealthyHealthy · -11% CAGR over 5y
Location
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Computed from 3 filingsProvides manned security services to public and private sector organisations, supplying security officers for sites such as campuses, offices and residential properties, and delivering incident…
Serves public and private sector organisations in Wales, including local authorities, universities, property managers and operators of residential, commercial and public-facing sites.
Financial Health
HealthyHealthy · 2% CAGR over 2y
Location
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Computed from 5 filingsDevelops fraud‑prevention technologies including digital certificate platforms, secure document systems, blockchain‑based paper authentication, and payment security tools. Provides software and…
Serves B2B organisations that need fraud-resistant certification and payment processes, including universities, education and training bodies, and organisations issuing certificates, cheques,…
Financial Health
HealthyHealthy · Hiring · 8% CAGR over 4y
Location
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Computed from 3 filingsOperates a multi-brand gambling and bookmaking business offering online betting platforms and on-course betting services, enabling customers to place wagers on sporting events under licences…
Serves adult consumer gambling customers, including racecourse/on-course bettors and online betting users, through multiple brands; its market is B2C rather than business or public-sector buyers.
Financial Health
StrongStrong · Growing, Hiring · 123% CAGR over 2y
Location
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Computed from 5 filingsProvides contract manufacturing and cabinet making services, including CAD design, machining, assembly, spraying and finishing. Produces gaming cabinets and contract furniture for retail, leisure and…
Serves UK businesses in gaming and amusements, retail, leisure, hospitality, catering and office interiors, including buyers needing contract furniture, cabinet-based products, refurbishments or…
Financial Health
HealthyHealthy · -66% CAGR over 4y
Location
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Computed from 5 filingsProvides video production services for businesses and agencies, creating film, animation and motion graphics. Produces promotional, marketing and branded video content and works with digital and…
Serves businesses, public sector bodies, universities and healthcare organisations, and works with digital and advertising agencies as a production partner for clients in the UK and globally.
Financial Health
WeakWeak · -6% CAGR over 4y
Location
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Computed from 3 filingsProvides installation of resin bound surfacing for residential and commercial properties, including driveways, patios, pathways, pool surrounds and landscaping areas. Offers bespoke designs and…
Serves homeowners and commercial clients in Cardiff, including property owners needing driveways, patios, pathways, pool surrounds, car parks and other external paved areas.
Financial Health
DistressedDistressed · 0% CAGR over 4y
Location
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Computed from 3 filingsProvides quantity surveying, project management and development consultancy for construction and property projects, including cost management, fund monitoring and employer’s agent services for…
Serves private property developers, owner occupiers, lenders, local authorities, housing associations, government bodies and charities involved in residential, leisure, retail, business space,…
Financial Health
HealthyHealthy · Growing · 0% CAGR over 2y
Location
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Computed from 5 filingsManufactures extruded plastic profiles and tubes for lighting applications, including PMMA and polycarbonate diffusers, microprismatic and closed‑section profiles, glazing beads, and related…
Sells to B2B customers in the lighting and LED sectors, including manufacturers, luminaire designers and industrial buyers needing custom polymer profiles, tubes and lighting components.
Financial Health
StrongStrong
Location
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Computed from 4 filingsProvides mortgage brokerage and financial advisory services including residential mortgages, remortgaging, equity release, and life and income protection insurance. Also arranges commercial property…
Serves individuals and families, businesses and landlords, and financial professionals including mortgage and protection advisers, appointed representatives and introducers.
Financial Health
StableStable · -73% CAGR over 3y
Location
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Computed from 5 filingsProvides legal services to businesses and entrepreneurs, including corporate law, employment law, commercial litigation, and commercial contracts. Advises company directors and management on…
Serves B2B clients and individual business people, including entrepreneurs, start-ups and established companies across Wales and England; also addresses organisations and professionals in sport.
Financial Health
StableStable · 0% CAGR over 4y
Location
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Computed from 3 filingsOperates a manor house events venue hosting weddings, conferences, meetings and private celebrations. Provides exclusive venue hire, event planning, in-house catering, and on-site accommodation…
Sells to engaged couples planning weddings, businesses and organisations booking conferences, meetings, networking events and charity dinners, and individuals or groups seeking venue hire, event…
Financial Health
WeakWeak · 2% CAGR over 2y
Location
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Computed from 3 filingsManufactures and supplies single-use surgical instruments and devices, including electrosurgical pencils and procedure-specific tools, for hospitals and healthcare providers. Products are designed to…
Sells to healthcare professionals and procurement teams in NHS, HSE and private hospitals, plus international medical device distributors across 30+ territories.
Financial Health
WeakWeak · -91% CAGR over 2y
Location
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Computed from 5 filingsProvides business energy brokerage and comparison services, enabling companies to obtain and switch electricity and gas contracts from multiple suppliers. Also offers energy procurement support, EV…
Serves small, medium and large UK businesses seeking business energy contracts, electricity and gas tariffs, energy procurement, EV charging solutions, and card payment or POS services.
Financial Health
StrongStrong · Hiring · 19% CAGR over 5y
Location
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Provides homelessness support services including street outreach for rough sleepers, temporary accommodation, and supported housing. Delivers advice, rehabilitation, and programmes focused on skills…
Serves people experiencing homelessness or rough sleeping in Wales, including those needing accommodation, support, learning and employment help; also engages donors, volunteers and corporate…
Location
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Computed from 5 filingsProvides security services including manned guarding, door supervision, CCTV monitoring, mobile patrols, key holding and alarm response. Also delivers event security planning and stewarding, CCTV and…
Serves public and private sector clients across the UK, including commercial, residential, retail, corporate and industrial organisations, plus event organisers.
Financial Health
WeakWeak · -4% CAGR over 4y
Location
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Computed from 5 filingsProvides specialist UK immigration legal services, advising businesses, sports organisations, healthcare providers, public sector bodies, education institutions, and individuals on visas, employee…
Serves employers and institutions needing immigration support, including businesses, sports bodies and clubs, health and care providers, higher education institutions, public sector organisations and…
Financial Health
StrongStrong · Hiring · 32% CAGR over 4y
Location
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Computed from 5 filingsDevelops and provides Microsoft Teams telephony and unified communications software. Its C360 platform integrates calling, contact centre functions and system integrations, with tools for monitoring…
Sells to businesses and organisations using Microsoft Teams, from small teams adopting Teams calling to growing and complex, regulated or mission-critical environments needing contact centre, voice…
Financial Health
HealthyHealthy · Hiring · 14% CAGR over 4y
Location
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Computed from 3 filingsProvides general insurance products and support for financial advisers and brokers. Offers household and landlord insurance policies, quoting and policy systems, and referral services that allow…
Serves insurance brokers and professional advisers arranging household, landlord and general insurance for their clients, with support also provided to policyholders.
Financial Health
StableStable · Profitable · -1% CAGR over 2y
Location
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Computed from 5 filingsProvides security services including managed control room monitoring, installation of security systems, drone-based patrol and surveillance, and cyber security services to protect people, property,…
Serves businesses and organisations needing physical and digital security, including premises owners, facilities/security managers and partners requiring monitoring, security systems, drone patrols…
Financial Health
StableStable · Hiring · 9% CAGR over 4y
Location
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Computed from 4 filingsProvides procurement consulting and managed procurement services, including spend analysis, tender management, contract management and procurement strategy. Also offers energy brokerage and energy…
Serves UK organisations, targeting procurement, operations and finance leaders responsible for supplier contracts, utilities, compliance and cost control.
Financial Health
DistressedDistressed · -84% CAGR over 3y
Location
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Computed from 5 filingsProvides taxi and ride‑hailing services offering on‑demand and pre‑booked journeys via app, online or phone. Operates a fleet for local trips, airport transfers, corporate staff transport and…
Serves UK consumers needing local, airport and event travel, plus businesses and large employers requiring staff transport. Also targets schools, councils or families arranging home-to-school…
Financial Health
StrongStrong · Growing, Hiring · 58% CAGR over 4y
Location
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Computed from 5 filingsOperates out-of-town home department stores and an online shop selling furniture, beds, kitchenware, bathroom products, lighting, home décor, garden furniture and DIY items. Also supplies and…
Serves UK consumers, homeowners and households furnishing, renovating or maintaining their homes, including store and online shoppers across furniture, kitchens, bathrooms, garden and DIY categories.
Financial Health
WeakWeak · -6% CAGR over 4y
Location
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Computed from 4 filingsProvides skip hire and waste removal services for domestic and commercial customers, supplying skips in multiple sizes, roll-on roll-off containers, and skip bags. Also offers wait-and-load services,…
Serves domestic customers, homeowners, tradespeople and commercial businesses needing skip hire and waste services across Caerphilly, Cardiff and wider South Wales.
Financial Health
WeakWeak · -11% CAGR over 3y
Location
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Computed from 4 filingsDesigns, supplies and installs fitted bathrooms for residential customers, including wet rooms, en suites and shower rooms. Provides showroom-based product selection, bathroom planning, and…
Sells mainly to homeowners in Cardiff and South Wales seeking fitted bathroom upgrades, including family bathrooms, ensuites, wet rooms, shower rooms and cloakrooms. Serves a range of budgets and…
Financial Health
StrongStrong · Growing, Hiring · 14% CAGR over 3y
Location
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Computed from 3 filingsOperates serviced accommodation including apartments, houses and rooms for short‑term stays. Offers online booking and property management services for furnished rental properties used by business…
Serves leisure and business travellers seeking serviced accommodation in South Wales, including visitors to Cardiff, Swansea, Barry and nearby valleys for events, special occasions, outdoor trips and…
Financial Health
HealthyHealthy · -15% CAGR over 2y
Location
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Computed from 5 filingsSupplies, installs and services straight and curved stairlifts for residential use, offering new, reconditioned and rental units. Provides stairlift repairs and maintenance, and sells mobility…
Serves private homeowners, older adults and people with mobility needs across South Wales and the South West, including families seeking home accessibility support.
Financial Health
HealthyHealthy · Hiring · 3% CAGR over 5y
Location
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Computed from 3 filingsSupplies landscaping materials including cultivated turf, topsoil grades, timber, bark, decorative aggregates, and garden tools. Sells products online for lawn installation, ground preparation, and…
Serves homeowners, gardeners, landscapers and outdoor construction trades needing landscaping materials, with emphasis on South Wales customers and UK-wide online buyers.
Financial Health
StableStable · -11% CAGR over 2y
Location
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Computed from 3 filingsSupplies and converts refrigerated and freezer vans for commercial use, including temperature‑controlled vehicles for food, pharmaceutical and specialist transport. Offers bespoke van conversions,…
Serves UK businesses needing temperature-controlled or specialist vans, including food and drink operators, fishmongers, caterers, pharmaceutical transport providers, dog-related businesses and fleet…
Financial Health
StableStable · -2% CAGR over 2y
Location
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Computed from 2 filingsProvides roofing contracting services including slate and tile roof installation, shingling, leadwork, and single‑ply flat roofing. Undertakes new build and refurbishment roofing projects for…
Serves private householders, large UK housebuilders, building contractors and public-sector clients across Wales and South West England, including commercial, education, care, medical, leisure,…
Financial Health
StableStable · 2% CAGR over 1y
Location
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Key facts
About 4% of the trading cohort reports turnover above £5M (4 of 83 firms) — the rest sits below that revenue band.
7% of the cohort was incorporated since 2022 (6 firms), so a sizeable share is in its first few filing cycles.
Every company in the Cardiff cohort runs the same underlying website content-management platform, with 100.0% (83) showing that dependency.
Analytics tagging appears on 62.7% (52) of sites, while tag-management tooling appears on 42.2% (35).
Page-building and form-protection tooling each appear on 41.0% (34) of sites, suggesting a sizeable share of template-led or agency-managed website builds.
Field services and trades form the largest tagged segment at 22.9% (19), ahead of construction at 15.7% (13).
There are 168 verified directors across the Cardiff companies running this SEO tooling.
What else do RankMath SEO users run?
Share of the 83 RankMath SEO-running UK companies where each technology was also detected. As of June 2026.
Who runs RankMath SEO 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.
7
Median headcount
£498.6K
Median UK turnover
4.8%
Above £5M turnover
6
Incorporated since 2022
Verified directors — included in the file
Director names and roles for these 144 companies, alongside financials and websites, in one Excel + CSV file.
How RankMath SEO 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.
RankMath SEO is a trademark of its respective owner. Firmbase is not affiliated with, sponsored by, or endorsed by the trademark owner.
RankMath SEO elsewhere
Frequently asked questions
How many companies in Cardiff use RankMath SEO?
How is RankMath SEO usage detected?
What kinds of companies use RankMath SEO in Cardiff?
What do RankMath SEO users in Cardiff also run?
How fresh is this data?
Can I get contact details for these companies?
Buy all 144 companies as a spreadsheet.
One Excel/CSV file with company details, websites and key data — yours to download and use.