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B2B Using Auth0 in the UK: 105 Active Firms (2026)
B2B firms using identity technology sell products and services to other organisations across the UK.
Customer identity sits close to the product, revenue and security buying centres: it keeps customer logins, account permissions, secure portals and API access away from ad hoc internal builds. For business-to-business providers, companies running Auth0 tend to have direct digital channels rather than purely relationship-led delivery, with product managers and engineering teams sharing ownership of onboarding, authentication and support access. Adoption also points to some budget headroom. These are rarely brochure-only firms; they usually need auditable account handling for client administrators, sales teams and end users moving between trials, paid accounts and renewal workflows.
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UK adoption is concentrated but not confined to London: 105 companies running Auth0 are actively trading, and reported headcount across the cohort totals 2,186 people. Within the wider detected authentication ranking for business-to-business firms, Auth0 sits second at 20.3%, against a wider category base of 516 authentication detections. Regionally, the skew is towards London, which accounts for 45.7% of the cohort, followed by the South East at 13.3%, the South West at 10.5%, the North West at 7.6% and the East of England at 5.7%. The sector mix is mostly software-led rather than agency-led.
Business-to-business adoption does not sit inside a unified licensing regime in the UK; the relevant rules follow the activity being carried out. Financial services, telecoms, data processing and professional services each bring their own supervisory perimeter, so identity procurement tends to be assessed alongside client contracts, audit rights and hosting terms. Identity systems also touch UK GDPR because business-contact details, login events and permission records can be personal data. For direct marketing, ICO guidance treats live calls, automated calls, electronic mail and fax under PECR. Corporate-subscriber email is treated differently from consumer email, but senders still need to identify themselves, provide a valid opt-out route and screen live calling against CTPS and TPS where objections apply.
Adoption appears tied to product maturity rather than company age. Firms with customer portals, self-serve onboarding or partner access tend to keep external identity tooling in place once it is wired into billing, support and permission workflows. Migration pressure is likely to come less from fashion than from procurement consolidation, security-review fatigue and bundled identity features in adjacent software stacks. For smaller providers, the main constraint is ownership: someone has to maintain policies, consent flows and account recovery when the login layer becomes part of the client experience.
105
Active firms
2026
20.3%
Of detected Authentication share
UK B2B
7
Median headcount
Filed accounts
265
Verified contacts
Across this cohort
Key facts
About 11% of the trading cohort reports turnover above £5M (12 of 105 firms) — the rest sits below that revenue band.
9% of the cohort was incorporated since 2022 (10 firms), so a sizeable share is in its first few filing cycles.
Among 516 B2B firms with a detectable authentication system, Auth0 is second by detected share at 20.3% (105), behind Google Sign-in at 48.1% (248).
Auth0-running B2B firms tend to sit in web and analytics-heavy stacks: 81.9% (86) also run Cloudflare, 74.3% (78) run Google Tag Manager and 31.4% (33) run Datadog.
The sector mix is weighted towards SaaS, with 70.5% (74) tagged SaaS, 22.9% (24) AI & Machine Learning and 16.2% (17) Cybersecurity.
London accounts for 45.7% (48) of B2B firms running Auth0, followed by the South East at 13.3% (14) and the South West at 10.5% (11).
ICO guidance says PECR electronic-mail consent does not apply to corporate subscribers, but UK GDPR still applies where personal data is processed.
Authentication market share among UK B2B
Share of the 516 UK B2B with a detectable system. As of June 2026.
What else do Auth0-running B2B run?
Share of the 105 Auth0-running UK companies where each technology was also detected. As of June 2026.
Where Auth0 B2B 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
£1m
Median UK turnover
11.4%
Above £5M turnover
10
Incorporated since 2022
265 verified decision-maker contacts
across these 105 companies, with emails available in Firmbase. Filter by role, seniority and stack.
Top UK B2B using Auth0
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.
GB Group (Corporate) Limited
Financial sub-scores
Computed from 3 filingsProvides digital identity verification, address validation and fraud prevention software and data services for businesses, enabling customer onboarding, identity checks, geocoding and investigation…
Sells to businesses and organisations needing identity, address and fraud checks for their customers, including enterprises operating digitally. Serves a global B2B market, with clients across…
Financial Health
HealthyHealthy · Hiring · 60% CAGR over 2y
Location
Financial sub-scores
Computed from 5 filingsDevelops open-source observability and monitoring software used to collect, visualise and analyse metrics, logs and traces from applications and infrastructure. Provides a cloud platform, plugins and…
Serves B2B engineering, DevOps, SRE and IT operations teams in software-driven organisations, including users of Kubernetes, cloud infrastructure, databases and applications who need observability…
Financial Health
StrongStrong · Growing, Hiring · 64% CAGR over 4y
Location
Demandbase Limited
Financial sub-scores
Computed from 5 filingsDevelops a B2B account‑based marketing and sales platform that uses data, intent signals and AI to identify target accounts, deliver targeted advertising, personalise web experiences, and provide…
Sells to B2B go-to-market teams, especially marketing, sales, customer success and revenue operations leaders at enterprise organisations in sectors such as technology, manufacturing, financial…
Financial Health
WeakWeak · Hiring · 35% CAGR over 4y
Location
Financial sub-scores
Computed from 5 filingsDevelops and provides software platforms for compliance, governance and investor relations. Products include whistleblowing systems, insider and disclosure management, policy management, ESG and data…
Sells to global enterprises and listed companies, targeting compliance, legal, data privacy, ESG/sustainability and investor relations teams across Europe, the US and APAC.
Financial Health
StableStable · 2% CAGR over 4y
Location
HORNETSECURITY LIMITED
Financial sub-scores
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
Financial sub-scores
Computed from 5 filingsProvides a digital business banking platform offering multi‑currency accounts, virtual company cards, cross‑border payments, expense and accounts payable management, accounting integrations, and…
Serves finance teams at growth-oriented businesses operating across multiple markets, including companies with multi-currency payments, supplier spend, team expenses and Fortnox-based accounting…
Financial Health
StrongStrong · Hiring · 37% CAGR over 4y
Location
EVAM ANALYTICS LIMITED
Financial sub-scores
Computed from 3 filingsDevelops real-time data analytics and customer engagement software. Provides platforms for customer journey orchestration, AI-driven optimisation, and omnichannel messaging including mobile push,…
Sells to enterprise marketing, customer experience and digital engagement teams, mainly in financial services, telecoms, retail and eCommerce, and travel and aviation.
Financial Health
StrongStrong · Growing · 0% CAGR over 2y
Location
Financial sub-scores
Computed from 3 filingsDevelops browser-based cybersecurity software that monitors user browser sessions to detect and respond to threats such as phishing, malicious extensions, credential theft, and account takeover,…
Sells to B2B security leaders, CISOs, security operations and IT teams at organisations whose employees use browsers, SaaS and cloud accounts, including companies exposed to phishing, account…
Financial Health
StableStable · Hiring · 143% CAGR over 2y
Location
FUSION RISK MANAGEMENT UK LIMITED
Financial sub-scores
Computed from 2 filingsDevelops enterprise resilience and risk management software that helps organisations plan for and respond to disruptions. Platform supports business continuity, IT disaster recovery, crisis and…
Sells to enterprise organisations, especially financial services firms, technology service providers and manufacturers, targeting risk, operational resilience, business continuity and IT disaster…
Financial Health
StableStable · Hiring · 19% CAGR over 1y
Location
Synthesized Ltd
Financial sub-scores
Computed from 3 filingsDevelops a data automation platform that generates synthetic and production-like datasets for software testing and development. Provides tools for database generation, data masking, subsetting, and…
Serves enterprise technology, QA and data teams in regulated sectors such as banking, insurance, telecoms, energy, healthcare and life sciences, especially organisations running major ERP, CRM and…
Financial Health
StableStable · Hiring · 18% CAGR over 2y
Location
Gravitee Ltd
Develops an open-source API management platform including an API gateway, event management, access control and developer portal tools. Software enables organisations to design, secure, publish and…
Serves enterprise B2B and public-sector technology teams managing API ecosystems, including organisations in financial services, fintech, insurance, government, travel, hospitality, software and…
Financial Health
Insufficient historyInsufficient history
Location
Juni Capital
Provides financial services for businesses including multi‑currency accounts, virtual and company cards, credit cards, invoice financing, and accounts payable tools. Platform includes spend…
Serves businesses using digital banking, particularly ecommerce and growth brands needing working capital for inventory, ad campaigns, supplier invoices, team expenses and cross-border payments.
Financial Health
Insufficient historyInsufficient history
Location
Provides financial reporting and regulatory compliance software for corporations, funds and advisers, including SEC and ESEF reporting tools, virtual data rooms, and platforms for shareholder…
Serves B2B clients including public and private corporations, fund and investment companies, advisors and law firms, with sector pages for healthcare, energy, technology and franchise management.
Location
Raidiam Services Limited
Financial sub-scores
Computed from 5 filingsProvides SaaS platforms and services for managing secure data sharing via APIs, including trust directories, PKI infrastructure, OAuth authorisation servers, AI‑driven access control, and conformance…
Sells to businesses, governments, regulators, central banks and industry consortia building secure API and open data-sharing ecosystems, especially in financial services, digital identity and…
Financial Health
StrongStrong · Growing, Hiring · 40% CAGR over 4y
Location
Financial sub-scores
Computed from 2 filingsProvides sales, marketing, and research and development services to its parent company, supporting a cloud-based identity platform that delivers user authentication, authorization, single sign-on,…
Serves developers, product and security teams at businesses building customer-facing or B2B SaaS applications, including retail, financial services, healthcare, nonprofits and startups.
Financial Health
HealthyHealthy · -7% CAGR over 1y
Location
Haver Analytics Limited
Financial sub-scores
Computed from 5 filingsProvides technical support and related services for a financial and economic data platform offering global time‑series databases, economic indicators, and research content, with software tools, APIs,…
Serves financial institutions, global research and strategy teams, quant analysts, economists, strategists and risk managers using economic and time-series data.
Financial Health
StrongStrong · Hiring · 21% CAGR over 4y
Location
CREOVAI UK LIMITED
Financial sub-scores
Computed from 5 filingsProvides AI-powered conversation intelligence software for contact centres, analysing customer interactions, delivering real-time guidance to agents, automating quality assurance scoring, and…
Serves contact centres and customer experience teams in financial services, insurance, credit unions, consumer goods and services, utilities and healthcare, including operations, QA, sales, fraud and…
Financial Health
StrongStrong · Hiring · 20% CAGR over 4y
Location
Financial sub-scores
Computed from 3 filingsDevelops identity security and privileged access management software. Platform provides credential vaulting, access governance, privileged remote access, and identity discovery tools to control and…
Sells to IT, IAM, security and compliance teams at businesses and government organisations that need to manage privileged access, workforce, machine, developer and AI identities.
Financial Health
StrongStrong · Profitable · -1% CAGR over 2y
Location
Financial sub-scores
Computed from 5 filingsDevelops cloud-based recruitment software including an applicant tracking system, candidate relationship management tools, career site management, interview workflows, analytics, automation,…
Sells to HR and recruitment teams at businesses worldwide, from small and midsize companies to enterprises with 1,000+ employees, that manage employer branding, candidate relationships, hiring and…
Financial Health
StrongStrong · Hiring · 30% CAGR over 4y
Location
Financial sub-scores
Computed from 5 filingsProvides low‑code digital application software and related services. Offers platforms for building custom applications, managing innovation lifecycles, supporting sales processes, and handling…
Serves B2B enterprises and their innovation, sales, resilience, ESG and compliance teams, plus partner and supplier networks involved in strategic initiatives and emerging cloud products or services.
Financial Health
StableStable · Hiring · 23% CAGR over 5y
Location
Valohai Limited
Financial sub-scores
Computed from 5 filingsDevelops a machine learning operations (MLOps) platform that automates ML pipelines, experiment tracking, and model lifecycle management. Enables teams to run and orchestrate ML workloads across…
Serves B2B data science, ML engineering, IT and DevOps teams at organisations running AI initiatives across cloud, hybrid and on-premise environments.
Financial Health
StrongStrong
Location
SYMPHONY COMMERCE LIMITED
Financial sub-scores
Computed from 5 filingsDevelops B2B ecommerce platforms and digital commerce systems for businesses. Provides white‑label storefront software, B2B portals, payment and discount management tools, API integrations, and…
Sells to B2B companies with complex ecommerce requirements, particularly global businesses needing partner storefronts, customer-specific pricing, integrations, payments and portal capabilities.
Financial Health
StableStable · -71% CAGR over 4y
Location
Financial sub-scores
Computed from 5 filingsDevelops a cloud backup and recovery platform that manages and stores backups across AWS, Azure and Google Cloud. Provides searchable backup storage, ransomware protection, compliance monitoring, and…
Serves enterprise B2B customers running cloud workloads on AWS, Azure and Google Cloud, especially IT, cloud infrastructure, security and data teams needing backup, recovery, compliance and data…
Financial Health
StrongStrong · Growing · 0% CAGR over 4y
Location
Financial sub-scores
Computed from 5 filingsDevelops and publishes process orchestration software that enables organisations to design, automate and monitor business workflows and microservices. The platform includes tools for workflow…
Serves enterprise and public-sector buyers, including transformation executives, IT and business leaders, chief architects, developers and software architects across financial services, healthcare,…
Financial Health
HealthyHealthy · Hiring · 75% CAGR over 4y
Location
Capitalise Business Support Limited
Financial sub-scores
Computed from 2 filingsProvides an online platform for small businesses and accountants to access business credit scores and reports, perform company credit checks, monitor financial risk, and apply for business loans…
Sells to UK limited companies, especially small businesses, and to accountants/advisers supporting clients with business finance, credit health and cash-flow risk decisions.
Financial Health
StableStable · Profitable · 5% CAGR over 1y
Location
Financial sub-scores
Computed from 5 filingsDevelops digital safety and operations management software for process‑intensive industries. Provides the Eclipse Suite, including permit‑to‑work, risk management, logging and compliance tools, with…
Serves B2B engineering, safety and operations teams in process-intensive heavy industries, including power generation and petrochemical production, at industrial sites worldwide.
Financial Health
StableStable · -70% CAGR over 4y
Location
Swoop Finance Ltd
Financial sub-scores
Computed from 5 filingsOperates an online platform that matches businesses with funding options including loans, equity investment and grants. Provides comparison tools and applications for financial products such as asset…
Serves SMEs, startups and growing businesses seeking finance, alongside advisors, brokers, vendors and bookkeepers supporting business clients with funding needs.
Financial Health
StableStable · Hiring · 15% CAGR over 4y
Location
Financial sub-scores
Computed from 3 filingsDevelops banking software platforms used by financial institutions to manage product pricing, billing, and deal lifecycles. Provides data and analytics tools, product catalogues, rates and fees…
Serves financial institutions worldwide, including retail and corporate banks and credit unions. Targets banking leadership and teams in data, IT, marketing, risk, compliance, product, pricing and…
Financial Health
StableStable · -91% CAGR over 2y
Location
Financial sub-scores
Computed from 3 filingsDevelops cloud-based service lifecycle management software for manufacturers of complex equipment. The platform supports spare parts inventory planning, dealer parts planning, pricing optimisation,…
Serves B2B manufacturers of complex equipment and goods, especially aftermarket, service, parts, pricing and warranty teams in industries including agriculture, automotive, construction, mining,…
Financial Health
StableStable · Hiring · 31% CAGR over 2y
Location
Financial sub-scores
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
Financial sub-scores
Computed from 4 filingsProvides software for managing credit assets, loan data and transactions. Platform supports portfolios, securitisations, debt funds, covered bonds and ABCP conduits, with tools for data integration,…
Serves banks, credit investors, asset managers, debt funds and structured finance teams managing loan portfolios, securitisations, covered bonds, ABCP conduits and illiquid credit transactions.
Financial Health
HealthyHealthy · Hiring · 9% CAGR over 3y
Location
SEND TECHNOLOGY SOLUTIONS LIMITED
Financial sub-scores
Computed from 5 filingsDevelops enterprise software for commercial and specialty insurers to manage underwriting operations. Provides a SaaS platform that connects underwriting data, workflows, pricing, and submissions,…
Sells to commercial and specialty insurance organisations, including Tier 1 and Tier 2 carriers, MGAs, reinsurers, Lloyd’s syndicates, and London market insurers managing complex underwriting…
Financial Health
HealthyHealthy · -43% CAGR over 4y
Location
Fiscal Technologies
Financial sub-scores
Computed from 5 filingsDevelops accounts payable risk management software that analyses invoices and supplier data to detect duplicate payments, fraud and anomalies. Provides automated statement reconciliation, supplier…
Serves finance, audit and procurement teams in UK local government, NHS and private healthcare, and corporate/business services organisations, including national retailers and international currency…
Financial Health
StableStable · Hiring · 3% CAGR over 4y
Location
Financial sub-scores
Computed from 4 filingsProvides a cloud-based observability platform offering managed ELK and OpenSearch stacks for log management and analytics. Delivers hosted tools including Grafana, Prometheus, Kibana and Logstash for…
Serves B2B DevOps, IT operations, sysadmin, security and engineering teams needing observability, logging, monitoring, compliance and analytics across cloud, container and application environments.
Financial Health
StableStable · -13% CAGR over 3y
Location
Financial sub-scores
Computed from 3 filingsProvides a cloud-based application security and risk management platform that scans software for vulnerabilities across the development lifecycle, including static and dynamic testing, open‑source…
Serves B2B software and security teams, from startups to Fortune 500 enterprises, targeting CISOs, AppSec leaders, developers and security teams in financial services, public sector, healthcare,…
Financial Health
StableStable · Profitable · -7% CAGR over 2y
Location
Financial sub-scores
Computed from 4 filingsDevelops contract lifecycle management software with AI tools for drafting, reviewing, approving, signing and storing contracts. Platform includes workflow automation, collaboration, e-signing, and…
Serves B2B enterprise in-house legal teams and contract-owning departments that manage high-volume contract creation, review, approval, signing, storage and ongoing legal workflows.
Financial Health
StableStable · Hiring · 52% CAGR over 3y
Location
Financial sub-scores
Computed from 4 filingsProvides usage‑based billing infrastructure software that processes product usage data, calculates charges, and automates quote‑to‑cash billing workflows. Integrates with CRM and ERP systems to…
Sells to B2B SaaS and software scale-ups using usage-based or complex pricing, especially finance, billing, operations, product, engineering, sales and customer success teams using CRM and ERP…
Financial Health
StableStable · Hiring · 5% CAGR over 3y
Location
Financial sub-scores
Computed from 4 filingsProvides a software platform for creating and managing employee recognition, customer loyalty and sales incentive programmes. Offers customizable e‑commerce reward stores, global reward sourcing and…
Serves enterprises, sales and HR teams, channel partners, consultants, resellers, agencies, brands and distributors across technology, automotive, financial services, retail, healthcare and…
Financial Health
StableStable · -42% CAGR over 3y
Location
Provides cloud-based HR software for managing employee records, payroll, recruitment, onboarding, learning management and benefits. Also offers eLearning content, HR analytics tools, outsourced…
Serves HR, payroll and learning teams in UK-based organisations, including care homes, charities, financial firms, law firms, manufacturers, media and communications businesses, professional services…
Location
Provides cloud‑based cybersecurity services including zero trust network access, secure web gateways, cloud application security, data loss prevention, and threat protection. Platform enables secure…
Serves large enterprises and public-sector organisations, including healthcare, banking and financial services, manufacturing, education and government teams, plus partners needing secure B2B access.
Location
Shipserv Limited
Financial sub-scores
Computed from 2 filingsProvides an online procurement and trading platform for the maritime industry, connecting ship operators and suppliers. Enables supplier discovery, RFQ management, catalogue search and workflow…
Serves B2B maritime procurement buyers and marine suppliers worldwide, including vessel operators, ship managers and vendors of chandlery, spares, safety equipment, provisions and repair services.
Financial Health
StableStable · Hiring · 13% CAGR over 1y
Location
Zappi
Provides an online consumer insights and market research platform that uses consumer data and AI to test product concepts, evaluate advertising, track brand health, and collect real-time consumer…
Sells to B2B brand, innovation, advertising, and insights teams at consumer-facing brands seeking continuous consumer feedback for product development, ad testing, and brand tracking.
Location
ALLVUE SYSTEMS LIMITED
Financial sub-scores
Computed from 5 filingsDevelops software platforms for alternative investment managers and fund administrators supporting private equity, venture capital and credit strategies. Products provide fund and investment…
Sells B2B to private capital firms, including private equity and venture capital managers, credit asset managers, fund administrators, banks and insurance companies managing private debt, CLOs, funds…
Financial Health
WeakWeak · 2% CAGR over 4y
Location
Audiense Limited
Financial sub-scores
Computed from 5 filingsProvides audience intelligence and social media analytics platforms that analyse digital activity and social signals to segment audiences, identify influencers, track hashtags, manage communities,…
Serves B2B marketing teams, agencies, brands and analysts in sectors including media and entertainment, financial services and retail that need consumer and audience insight for campaigns, content,…
Financial Health
DistressedDistressed · -14% CAGR over 4y
Location
Financial sub-scores
Computed from 4 filingsDevelops cloud-based treasury and liquidity management software for hedge funds, private markets firms, and fund administrators. The platform consolidates cash, credit facilities, margin, and…
Sells to alternative investment management firms, particularly hedge funds, private markets firms, fund administrators and banks. Targets treasury, liquidity and finance teams managing cash, credit…
Financial Health
StrongStrong · Hiring · 116% CAGR over 4y
Location
Axia Digital Limited
Financial sub-scores
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
Location
Financial sub-scores
Computed from 3 filingsProvides cloud-based human resources software for managing employee performance, engagement, goals and compensation. Platform includes performance reviews, surveys, analytics, OKR tracking and AI…
Serves B2B HR and people operations teams, managers and executives at companies seeking support for employee performance, engagement, compensation and workforce analytics.
Financial Health
StrongStrong · Hiring · 123% CAGR over 2y
Location
PALMER FUND SERVICES (UK) LIMITED
Financial sub-scores
Computed from 2 filingsProvides administration services for private capital funds and structures, including fund launch support, capital call and distribution processing, cash management, investor services, accounting and…
Serves private capital fund managers, investment firms and institutional finance teams managing complex funds, SPVs and loan structures across jurisdictions, including CFOs and operations teams.
Financial Health
HealthyHealthy · -20% CAGR over 1y
Location
Funnel Operations Ltd
Financial sub-scores
Computed from 5 filingsDevelops a marketing data platform that collects data from advertising and marketing services, cleans and models it, and provides reporting, attribution analysis, and automated exports to data…
Serves B2B and B2C companies, marketing agencies, and in-house digital marketing, BI/data, and IT teams that manage multi-channel marketing data and reporting.
Financial Health
HealthyHealthy · Hiring · 32% CAGR over 4y
Location
Financial sub-scores
Computed from 5 filingsProvides a cloud‑native SaaS platform for data protection and cyber recovery. Offers backup, ransomware recovery, data governance, eDiscovery and compliance tools for enterprise workloads, public…
Serves enterprise IT, security and compliance teams that manage cloud, SaaS, endpoint and hybrid infrastructure, plus managed service providers and channel partners delivering data protection…
Financial Health
StableStable · Hiring · 7% CAGR over 4y
Location
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How Auth0 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. B2B 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 B2B 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.
Auth0 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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How is Auth0 usage detected?
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