SaaS Companies Using RankMath SEO in the UK: 220 Active Firms (2026)
SaaS companies running SEO tooling sell subscription cloud software while signalling content-led acquisition capability in the UK market.
Marketing, growth and web operations teams are the usual buying centre for SaaS providers running this SEO tooling. The system sits on the public website, where it helps manage search metadata, indexation cues and content templates across product, use-case and resource pages. Adoption tends to signal a direct-channel posture: a firm is investing in organic search, attribution and repeatable content operations rather than relying only on outbound sales or partner referrals. Engagements are normally website-stack decisions, not board-level software programmes, though security, consent and customer-data handling still matter once forms and analytics connect to sales systems.
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Across the UK, 220 trading SaaS firms are detected running this SEO tooling on their public websites. Reported employment across that cohort is 2,223 people, with 121 of 121 firms showing headcount, or 100%. Within detected SEO tooling across 1,780 SaaS sites, the system sits second at 12.4%, behind an alternative at 77.9% and ahead of alternatives at 7.5%, 2.0%, 1.4% and 0.1%. Registered offices skew towards London at 38.6%, followed by the South East at 13.2%, the South West at 11.4%, the West Midlands at 6.8% and the North West at 6.4%.
Companies running this stack are SaaS suppliers rather than licensed SEO-tool operators, so regulation usually follows the service they sell and the data they process. The ICO frames personal-data duties under UK GDPR, including controller and processor roles, retention, lawful basis and security. Public-facing marketing sites add consent and tracking considerations where analytics, forms and gated content feed sales systems. Cloud dependency matters structurally: the CMA has examined UK public cloud infrastructure services and found competition concerns requiring remedies. For adopters, that points less to licensing risk than to procurement checks on hosting, portability, vendor concentration and customer-sector obligations.
Adoption appears tied to content-led acquisition rather than technology fashion. Among SaaS users, the tool tends to suit lean growth teams that want editorial control without moving the whole website estate. Scale-up adoption may be more selective, especially where marketing operations teams prefer fewer plug-ins, stricter consent governance and closer integration with revenue systems. The likely pattern is steady churn between website stacks, with agencies and in-house operators shaping choices more than formal enterprise procurement.
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 RankMath SEO rises with company size across the trading UK SaaS companies in this cohort. 0.4% of the 37,913 companies with under 10 employees run RankMath SEO (134 detected). 4.2% of the 1,886 companies with 10–50 employees run RankMath SEO (80 detected). 3.6% of the 166 companies with over 50 employees run RankMath SEO (6 detected). That is a 3.2% gap between the over 50 employees and under 10 employees bands.
220
Active firms
2026
12.4%
Of detected SEO share
UK SaaS
7
Median headcount
Filed accounts
595
Verified directors
Across this cohort
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Key facts
About 7% of the trading cohort reports turnover above £5M (16 of 220 firms) — the rest sits below that revenue band.
7% of the cohort was incorporated since 2022 (17 firms), so a sizeable share is in its first few filing cycles.
Among 1,780 SaaS firms with a detectable SEO system, this SEO system accounts for 12.4% of detections, compared with 77.9% for the largest system and 7.5% for the next largest.
The cohort is London-skewed, with London at 38.6% (85), the South East at 13.2% (29) and the South West at 11.4% (25).
Website stacks are content-management heavy: 99.1% (218) also run a common publishing platform, while 67.3% (148) run tag-management tooling and 60.5% (133) run web analytics.
UK SaaS suppliers are not generally licensed as a single sector, but the ICO, UK GDPR and the Data Protection Act 2018 matter where personal data is processed.
The CMA closed its public-cloud infrastructure investigation on 31 July 2025, reporting an adverse effect on competition and setting out remedies rather than creating a SaaS-provider licensing regime.
SEO market share among UK SaaS
Share of the 1,780 UK SaaS with a detectable system. As of June 2026.
What else do RankMath SEO-running SaaS run?
Share of the 220 RankMath SEO-running UK companies where each technology was also detected. As of June 2026.
Where RankMath SEO SaaS are, and how healthy they look
By region
By registered-office region; companies without a regional match count toward Rest of UK.
By financial health
From filed accounts; firms with fewer than two filings show as insufficient history.
7
Median headcount
£720.2K
Median UK turnover
7.3%
Above £5M turnover
17
Incorporated since 2022
Verified directors — included in the file
Director names and roles for these 400 businesses, alongside financials and websites, in one Excel + CSV file.
Top UK SaaS using RankMath SEO
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 filingsDevelops and provides cloud-based accounting software for small businesses and accountants. The platform supports bookkeeping, invoicing, expense tracking, VAT returns, payroll management, payment…
Sells to UK small businesses needing accounting, bookkeeping and payroll support, and to accountancy practices managing client accounts through partner tools.
Financial Health
HealthyHealthy
Location
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Financial sub-scores
Computed from 3 filingsProvides cloud-based software platform for subscription and quote-to-cash management including billing, payments, revenue recognition, pricing, usage metering, accounts receivable automation, and…
Serves B2B finance, billing, revenue and operations teams at companies running subscription, usage-based or hybrid monetization models, especially those managing complex quote-to-cash and subscriber…
Financial Health
StableStable · Hiring · 9% CAGR over 2y
Location
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Computed from 4 filingsProvides online background screening and identity verification services for employers. Offers criminal record checks, right‑to‑work verification, employment and education verification, credit and…
Serves SMBs and enterprises hiring staff or contractors, plus staffing, property, healthcare, logistics, tech, retail, manufacturing, gig economy, financial services, construction, non-profit,…
Financial Health
StrongStrong · Hiring · 27% CAGR over 5y
Location
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Computed from 3 filingsDevelops experience management and market research software platforms including survey tools, online panel management, voice‑of‑customer and employee feedback systems, qualitative research…
Serves B2B enterprises, market research agencies and insight teams, especially CX, EX, market research and marketing leaders in sectors such as retail, insurance, travel, healthcare and consumer…
Financial Health
HealthyHealthy · 0% CAGR over 2y
Location
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Computed from 3 filingsDevelops cloud-based IT management software that enables organisations and managed service providers to monitor and manage endpoints, deploy patches, automate IT tasks, perform remote support, manage…
Sells to enterprise IT teams, managed service providers, and IT departments in sectors including software, healthcare, education, financial services, and federal, state and local government.
Financial Health
StrongStrong · Hiring · 51% CAGR over 2y
Location
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Computed from 5 filingsDevelops partner relationship management (PRM) software that helps companies manage partner programmes. Provides tools for partner onboarding, training, marketing automation, deal registration,…
Serves B2B companies with channel, referral and partner ecosystems, especially partner revenue and marketing teams in cybersecurity, high tech, manufacturing, fintech and telecom sectors.
Financial Health
StrongStrong · Hiring · 8% CAGR over 4y
Location
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Computed from 5 filingsProvides international payroll services through a cloud platform that manages payroll processing, compliance monitoring, reporting, and cross‑border employee payments. Includes HR system…
Serves B2B employers with international workforces, from SMEs to Fortune 500 enterprises. Targets HR, payroll, rewards and finance leaders across varied industries managing multi-country employees…
Financial Health
StrongStrong · -1% CAGR over 4y
Location
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Computed from 5 filingsProvides marketing automation and performance tracking software including lead tracking and distribution, call tracking, email and SMS marketing, click tracking, cloud phone systems, suppression list…
Serves B2B marketing and operations teams, lead generators, and firms in insurance, financial services, and home services that manage high-volume leads, calls, clicks, email, SMS, and partner…
Financial Health
StrongStrong · Growing, Hiring · 28% CAGR over 4y
Location
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Computed from 5 filingsProvides cloud-based security and data protection tools for Microsoft 365 environments, including email spam and malware filtering, threat protection, encryption, backup and recovery, email…
Serves businesses using Microsoft 365, especially IT and security teams, administrators, and managed service providers managing multiple tenants. Also targets channel partners and distributors.
Financial Health
StrongStrong
Location
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Computed from 4 filingsDevelops cloud-based recruitment software including applicant tracking, CRM, recruitment marketing and analytics tools. Platform posts jobs to boards, manages candidate pipelines, matches candidates…
Serves UK recruitment and staffing agencies, plus in-house HR and talent acquisition teams across sectors, including recruiters responsible for candidate pipelines, client accounts and hiring…
Financial Health
StrongStrong · Growing · 1% CAGR over 3y
Location
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Computed from 4 filingsProvides secure virtual data room software used in mergers and acquisitions, real estate transactions, fundraising and due diligence. Platform offers document storage, sharing, analysis and AI tools…
Serves B2B dealmakers and transaction teams in M&A, real estate, financial services, legal, energy and startups, including advisory firms, asset managers and fundraising teams managing due diligence…
Financial Health
HealthyHealthy · -12% CAGR over 3y
Location
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Computed from 3 filingsProvides a digital platform for employers to manage and deliver flexible employee benefits programmes, including discounts, salary sacrifice and wellbeing options, with automated administration,…
Sells to employers and HR teams seeking flexible employee benefits, voluntary benefits, salary sacrifice schemes and corporate wellness programmes for their staff.
Financial Health
StrongStrong
Location
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Computed from 5 filingsDevelops cloud software for third‑party, supplier and client management. Platform supports vendor onboarding, due diligence, cost and invoice management, workflow automation, performance monitoring,…
Targets regulated B2B organisations with teams responsible for supplier, vendor, counterparty and client relationship management, including network management, due diligence and operational…
Financial Health
StrongStrong · Hiring · 21% CAGR over 4y
Location
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Computed from 3 filingsDevelops cloud-based compliance and risk management software for organisations managing multiple sites. The platform supports audits, safety inspections, asset tracking, maintenance records, and…
Sells to organisations managing multi-site estates and compliance-heavy facilities, including property and facilities management teams in construction, retail, social housing, transport and…
Financial Health
StrongStrong · 20% CAGR over 1y
Location
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Computed from 3 filingsProvides customer experience management software that collects and analyses customer and employee feedback across multiple channels. Offers survey tools, reputation management, conversational…
Serves B2B customer experience, marketing, insights, contact centre and HR teams at mid-market and enterprise organisations, especially consumer-facing brands managing customer feedback, reviews and…
Financial Health
HealthyHealthy · Profitable · -31% CAGR over 2y
Location
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Computed from 4 filingsDevelops software for compliance and security in unified communications platforms, capturing, archiving and analysing voice, video, chat and other collaboration data. Provides tools for supervision,…
Serves regulated enterprises and public-sector organisations, especially financial services, state and local government, telemedicine, education and manufacturing teams responsible for communications…
Financial Health
StrongStrong · Hiring · 52% CAGR over 3y
Location
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Computed from 5 filingsProvides production accounting software and payroll SaaS for film and television productions, including budgeting, purchase orders, accounts payable, digital forms, e-signatures, timecards, and…
Serves B2B customers in film and television production, especially production accountants, production finance teams and freelance crew, with separate Australia and UK resources.
Financial Health
StrongStrong · Growing, Hiring · 12% CAGR over 4y
Location
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Computed from 4 filingsProvides an online Single Central Record (SCR) management system for schools and multi‑academy trusts. The platform replaces spreadsheets with a portal that tracks staff safeguarding checks, orders…
Sells to UK educational establishments, including schools and Multi Academy Trusts, that need to manage staff safeguarding records and maintain Ofsted or ISI compliance.
Financial Health
StrongStrong · Growing, Hiring · 19% CAGR over 3y
Location
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Computed from 5 filingsDevelops and supplies cloud-based care management software for healthcare and social care providers. The platform includes electronic care planning, medication administration records (eMAR), staff…
Serves UK care providers including residential care homes, domiciliary care agencies, supported living services, large care groups, council day centres and specialist colleges, targeting managers and…
Financial Health
HealthyHealthy · -63% CAGR over 4y
Location
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Computed from 5 filingsProvides an online customer review management platform that collects and aggregates reviews, enables businesses to request and reply to customer feedback, and displays ratings across websites, social…
Sells to businesses that want to manage online reviews and reputation, especially multi-site retailers, estate agencies, franchise businesses and children’s activity providers, and also works with…
Financial Health
HealthyHealthy · Hiring · 14% CAGR over 4y
Location
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Computed from 5 filingsDevelops workforce management software and biometric terminal hardware used to track employee time and attendance, manage scheduling, HR records and compliance, capture real-time workforce data, and…
Sells to B2B organisations with shift-based or distributed workforces, targeting HR, operations and workforce managers across the UK, Europe and Canada.
Financial Health
StrongStrong · Growing · 0% CAGR over 4y
Location
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Computed from 4 filingsProvides datasets, APIs and analytics on companies, professionals, technologies and skills. Aggregates global profile and firmographic data to support sales targeting, marketing intelligence,…
Serves B2B sales and marketing, HR/workforce, product development, data and analytics teams at organisations using professional, company, skills and intent data.
Financial Health
StableStable · -3% CAGR over 3y
Location
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Computed from 3 filingsDevelops data decisioning and automation software for financial and commercial organisations. Provides platforms for credit origination, prescreening, risk and fraud management, customer acquisition,…
Serves B2B enterprises in financial services, retail, automotive and telecoms, especially lenders, credit providers and merchants managing customer acquisition, risk, fraud and credit decisioning.
Financial Health
HealthyHealthy · Hiring · 41% CAGR over 2y
Location
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Computed from 5 filingsDevelops hotel booking software for travel management companies. Platform aggregates hotel content from GDS and other sources, providing agent and traveller booking tools, APIs, payment handling,…
Sells to travel management companies, especially corporate travel agencies managing hotel bookings for business travellers and client travel programmes.
Financial Health
StrongStrong · Hiring · 37% CAGR over 4y
Location
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Computed from 5 filingsProvides cloud-based document and email management software for law firms and in-house legal teams. Platform supports document storage, search, collaboration, workflow automation, security controls,…
Serves legal professionals in small, midsize and large law firms, in-house legal departments, and public sector legal teams, including federal, state, local government and higher education…
Financial Health
StrongStrong · Hiring · 22% CAGR over 5y
Location
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Computed from 4 filingsProvides software and advisory services for private market investors and companies to collect and manage sustainability and ESG data, calculate greenhouse gas emissions, assess climate risk, and…
Sells to private markets participants, especially investors and portfolio companies needing ESG, carbon and regulatory data management. Serves business users handling sustainability, risk, compliance…
Financial Health
StrongStrong · Hiring · 40% CAGR over 3y
Location
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Provides a data intelligence platform for market research and B2B company analysis. Aggregates global data on companies and decision‑makers, offering tools for company discovery, financial…
Serves B2B organizations including corporates, banks, insurers, governments, dealers, agencies, consultants and system integrators, especially marketing, sales, procurement and M&A teams seeking…
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Computed from 3 filingsDevelops financial planning and performance management software for budgeting, forecasting, reporting and financial consolidation. The platform integrates data from enterprise systems and supports…
Serves finance, FP&A and corporate performance teams at companies, including wider business stakeholders involved in budgeting, forecasting, consolidation, management reporting and ESG reporting.
Financial Health
HealthyHealthy · Hiring · 94% CAGR over 2y
Location
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Computed from 3 filingsProvides cloud-based expense management software for businesses, including mobile expense submission, receipt scanning, policy-based approvals, mileage tracking, reimbursement processing, expense…
Serves businesses with employee travel and expense needs, particularly finance teams, CFOs and accounting operations in organisations using ERP, HR and travel platforms such as SAP, Workday, NetSuite…
Financial Health
HealthyHealthy · 0% CAGR over 2y
Location
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Computed from 5 filingsProvides recruitment technology and services including applicant tracking software, job advertising distribution across job boards, and HR consultancy. Platform manages vacancies, candidate…
Serves HR teams and HR directors in UK enterprises, SMEs, public sector bodies, education providers and HR consultancies managing recruitment and hiring processes.
Financial Health
DistressedDistressed · -19% CAGR over 4y
Location
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Computed from 3 filingsDevelops software providing digital mapping, property data and research tools for commercial property professionals. Platform offers occupier data, transaction comparables, title boundary maps,…
Serves B2B customers in the UK commercial property sector, including property firms, commercial agents, valuers, developers, investors and architects.
Financial Health
StableStable · -2% CAGR over 2y
Location
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Computed from 5 filingsProvides cloud-based invoicing and business management software for small businesses and freelancers. The platform enables creation of invoices, quotes, estimates and purchase orders, tracks expenses…
Serves freelancers, contractors, entrepreneurs and small business owners, especially trades and local service businesses such as construction, HVAC, electrical, plumbing, landscaping, cleaning, auto…
Financial Health
StrongStrong
Location
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Computed from 5 filingsDevelops and operates an online land data and intelligence platform providing GIS-based access to planning applications, local plan policies, land availability assessments, ownership data and…
Sells to UK property developers, land buyers, planners and property professionals evaluating sites and monitoring planning activity across Great Britain.
Financial Health
StableStable · Hiring · 28% CAGR over 4y
Location
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Computed from 3 filingsProvides cloud-based security workforce management software for security firms and enterprise teams, including tools for guard tour tracking, incident reporting, dispatch, scheduling, compliance…
Serves security guarding firms and enterprise corporate security teams in sectors including financial services, healthcare, higher education, hospitality, manufacturing, oil and gas, property…
Financial Health
StrongStrong · Hiring · 18% CAGR over 2y
Location
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Computed from 2 filingsDevelops cloud-based no‑code software for construction and industrial companies to digitise site paperwork and operational processes, including safety management, quality tracking, field reporting,…
Serves B2B industrial and built-environment companies, including construction, engineering, infrastructure and asset-intensive firms with field, safety, quality, fleet, project delivery and…
Financial Health
StrongStrong · Growing, Hiring · 91% CAGR over 1y
Location
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Computed from 5 filingsProvides software that analyses marketing and social media video content using AI to identify visual, narrative and audio elements affecting performance. Generates insights, predictive scores,…
Serves B2B marketing teams at brands and agencies, including media buyers, influencer and creator teams, social teams, and e-commerce brands producing video ads, UGC, influencer and social content.
Financial Health
StrongStrong · Hiring · 32% CAGR over 4y
Location
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Computed from 5 filingsProvides cloud‑based procurement and e‑sourcing software for organisations, including tools for RFQs, reverse auctions, supplier discovery and onboarding, contract management, spend analysis, and…
Serves B2B and public-sector procurement teams, including CPOs, procurement managers and buyers in enterprises, consultancies and organisations managing sourcing, supplier, contract and spend…
Financial Health
StrongStrong · Hiring · 19% CAGR over 4y
Location
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Computed from 5 filingsDevelops cloud-based health and safety management software for workplaces. Provides tools and mobile apps for incident reporting, risk assessments, audits, inspections, action tracking, document…
Sells to B2B organisations managing workplace health and safety, especially safety, compliance and operations teams in construction, manufacturing, transport and logistics, entertainment and leisure,…
Financial Health
StrongStrong · Growing, Hiring · 18% CAGR over 5y
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Computed from 3 filingsProvides cloud-based garage management software for automotive workshops, including booking systems, workshop diaries, job sheets, invoicing, customer and vehicle records, stock control, reporting,…
Sells to UK motor trade businesses, especially independent garages and vehicle workshops ranging from one-person operations to larger multi-bay teams with technicians.
Financial Health
StrongStrong · Growing, Hiring · 5% CAGR over 2y
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Computed from 5 filingsDevelops financial reporting and corporate performance management software for ERP systems including Epicor, SAP Business One, Nextworld and Acumatica. Provides tools for report design, Excel-based…
Serves B2B finance teams, report power users, cost-centre managers and executives in organisations running Epicor, SAP Business One/ByDesign, Nextworld, Acumatica or Coda ERP systems.
Financial Health
StrongStrong · Hiring · 6% CAGR over 4y
Location
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Computed from 5 filingsDevelops web-based e‑assessment and e‑portfolio platforms for professional and vocational learning. Provides systems such as CPD tracking tools, digital logbooks and online skills passports that…
Serves B2B and public-sector customers including universities, NHS bodies, professional institutions, trade bodies, learning providers and employers in regulated sectors such as healthcare,…
Financial Health
HealthyHealthy · Growing · 0% CAGR over 4y
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Computed from 5 filingsProvides a cloud-based frontline operations platform that enables organisations to manage inspections, checklists, staff communications, training, onboarding and performance observations, helping…
Serves businesses with frontline workforces, including retail, transport and logistics, gyms, facilities management, utilities, hospitality, travel, field engineering and field sales teams.
Financial Health
HealthyHealthy · -70% CAGR over 4y
Location
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Computed from 5 filingsDevelops low‑code B2B portal software integrated with ERP systems, enabling manufacturers, distributors and wholesalers to provide customer, supplier and partner self‑service access to pricing,…
Serves B2B manufacturers, distributors and wholesalers using ERP systems, targeting IT, finance, operations and leadership teams managing customer, supplier, dealer or partner relationships.
Financial Health
HealthyHealthy · -4% CAGR over 4y
Location
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Computed from 3 filingsProvides a cloud-based financial reporting and planning platform for advisers. Aggregates and standardises client investment data from multiple providers, consolidates holdings including private…
Serves financial advisers, wealth managers and other intermediaries who manage clients with complex, multi-provider wealth, including private equity, debt securities and alternative investments.
Financial Health
StrongStrong · 67% CAGR over 1y
Location
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Computed from 4 filingsProvides cloud-based fleet and driver compliance management software. Features include digital vehicle walkaround checks, defect reporting, maintenance scheduling, tachograph analysis, driver licence…
Serves B2B transport operators and organisations managing vehicle fleets and drivers, including logistics, construction, utilities, waste, taxis, food service and other fleet-intensive sectors…
Financial Health
StrongStrong · Growing, Hiring · 14% CAGR over 3y
Location
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Computed from 5 filingsProvides a cybersecurity awareness training platform for organisations, including phishing attack simulations, employee training modules, reporting and analytics on risk and participation, and dark…
Sells to B2B IT and security teams in organisations seeking to manage employee cyber awareness, phishing risk and board-level security reporting. Also targets channel partners serving business…
Financial Health
HealthyHealthy · -33% CAGR over 5y
Location
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Computed from 5 filingsDevelops software and provides training for risk‑based quality management in clinical trials. Offers the OPRA platform for centralized monitoring, risk assessment and subject monitoring, along with…
Serves clinical trial sponsors, CROs and trial managers in life sciences organisations running regulated clinical research.
Financial Health
StrongStrong · Hiring · 33% CAGR over 4y
Location
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Financial sub-scores
Computed from 5 filingsDevelops and provides online booking and scheduling software for public sector organisations, including councils, government departments and NHS services. Platform supports appointment booking, event…
Serves UK public sector organisations, including local councils, central government departments and NHS teams that manage citizen-facing appointments, events, facilities and internal workspace…
Financial Health
HealthyHealthy · -65% CAGR over 4y
Location
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Financial sub-scores
Computed from 3 filingsDevelops clinical IT software used by healthcare providers, including endoscopy reporting systems, diagnostic department solutions, patient portals, order and results management, care pathway tools,…
Serves healthcare organisations globally, including hospitals and clinical departments in endoscopy, bronchoscopy, cystoscopy, cardiology, neurophysiology, respiratory physiology, pre-assessment,…
Financial Health
StrongStrong · Hiring · 17% CAGR over 2y
Location
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Financial sub-scores
Computed from 5 filingsDevelops and provides cloud-based enterprise software for automotive, truck, bus and equipment businesses. Its A365 platform, built on Microsoft Dynamics 365, integrates ERP, CRM and dealer…
Serves B2B organisations in the automotive, truck and bus, and heavy equipment sectors, including dealers, distributors, OEM-linked operations, rental and fleet businesses, and aftersales/service…
Financial Health
StrongStrong · Growing · 0% CAGR over 4y
Location
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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. SaaS 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 SaaS 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.
RankMath SEO 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
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