Companies Using Google Sign-in in the UK: 528 Active Firms (2026)
UK companies running federated sign-in let users access online accounts through third-party identity credentials on public websites.
Customer identity teams, product managers and security owners tend to drive adoption, with marketing operations involved where sign-in sits close to acquisition and conversion flows. The technology reduces password handling for account-based web or mobile services, while leaving the operator responsible for the user journey, consent language, account linking and fallback access. Companies running it usually have a public digital service, enough account traffic to make friction visible, and some internal capacity to manage authentication risk. It fits mid-market and enterprise buyers better than purely brochureware sites, though many adopters still sit in services, travel, commerce and vertical software rather than dedicated identity provision.
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Among 528 active UK companies running this federated sign-in technology, reported headcount totals 1,746 across 117 firms with employment reporting. The revenue profile looks mixed: 21 companies exceed £5M turnover, while 44 were incorporated since 2022, so adoption is not confined to mature digital services. Sector tags skew toward SaaS, travel and hospitality, field services and trades, e-commerce, and construction, suggesting sign-in reuse across appointment, booking, quote and account-management workflows rather than a single identity industry.
UK operators using third-party sign-in usually face horizontal data-protection and security duties rather than a technology-specific licence. Under UK GDPR, online identifiers can be personal data, and identity signals used to recognise a person can move into more sensitive territory when biometrics are involved. ICO guidance frames authentication as part of appropriate technical and organisational measures: single sign-on can reduce password burden, but the service operator still needs a documented risk assessment, recovery process and view of the consequences if the identity provider is compromised. Identity-verification specialists may also need to consider the statutory UK digital identity and attributes trust framework.
Adoption appears likely to follow the broader customer-account stack rather than a pure identity-software buying cycle. Companies with booking, subscription or repeat-purchase journeys tend to keep federated sign-in because it lowers friction at registration, but security teams may become more selective about fallback access, account linking and incident response. Smaller service businesses may rely on default website integrations, while scale-up and regulated-service users are more likely to formalise ownership between product, security and data-protection roles. Consolidation in identity tooling could also make buyer dependency a more visible procurement question.
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 Google Sign-in rises with company size across the trading companies in this cohort. 0% of the 1,970,933 companies with under 10 employees run Google Sign-in (353 detected). 0.2% of the 86,190 companies with 10–50 employees run Google Sign-in (157 detected). 0.2% of the 9,358 companies with over 50 employees run Google Sign-in (19 detected). That is a 0.2% gap between the over 50 employees and under 10 employees bands.
528
Active firms
2026
21
Above £5M turnover
Trading firms
6
Median headcount
Filed accounts
1,053
Verified directors
Across this cohort
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Key facts
About 3% of the trading cohort reports turnover above £5M (21 of 528 firms) — the rest sits below that revenue band.
8% of the cohort was incorporated since 2022 (44 firms), so a sizeable share is in its first few filing cycles.
70.1% of the cohort also shows a detected content-management platform, while 64.6% has web analytics and 51.9% has tag-management tooling.
SaaS is the largest tagged sector at 16.3% of the cohort, followed by Travel & Hospitality at 11.7% and Field Services & Trades at 11.0%.
25.6% of the cohort is classified as stable, compared with 18.2% weak and 9.5% distressed.
The ICO treats online identifiers as personal data under UK GDPR, so federated sign-in deployments sit inside data-protection and security obligations.
The gamma trust framework became statutory under section 28 of the Data (Use and Access) Act 2025 from 1 December 2025, giving digital verification services a certification route.
What else do Google Sign-in users run?
Share of the 528 Google Sign-in-running UK companies where each technology was also detected. As of June 2026.
Who runs Google Sign-in 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.
6
Median headcount
£468.5K
Median UK turnover
4%
Above £5M turnover
44
Incorporated since 2022
Verified directors — included in the file
Director names and roles for these 918 companies, alongside financials and websites, in one Excel + CSV file.
Top UK companies using Google Sign-in
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 filingsOperates an online food ordering platform that connects customers with restaurants, takeaways and convenience stores, enabling users to browse menus and place delivery or collection orders through a…
Serves consumers ordering takeaway food and B2B outlet partners including restaurants, takeaways and convenience stores in the UK, US, Ireland, New Zealand, Australia and Canada.
Financial Health
StrongStrong
Location
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Computed from 3 filingsDevelops software supply chain management tools for DevOps and security teams, including artifact repositories, package curation, vulnerability and code scanning, release distribution, ML model…
Serves DevOps, DevSecOps, MLOps and security teams at software-driven organisations, from small teams to enterprises, including financial services, public sector, technology, healthcare, gaming,…
Financial Health
StrongStrong · Hiring · 37% CAGR over 2y
Location
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Computed from 5 filingsProvides an online platform for managing and administering employee benefit programmes, including insurance and wellbeing benefits. Enables employers and brokers to manage policies, communicate…
Serves B2B benefit leaders at employers and enterprises managing global employee benefits, as well as employee-of-record providers and benefits brokers serving client workforces.
Financial Health
StableStable · Hiring · 5% CAGR over 6y
Location
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Computed from 3 filingsDevelops customer relationship management (CRM) software for financial services firms. The platform provides tools for managing customer data, communications, payment links, IVR payments, and…
Serves financial services businesses of all sizes, including lenders, BNPL providers, fintechs, leasing and subscription firms, collections teams, legal services providers and insurers.
Financial Health
StrongStrong · Growing, Hiring · 8% CAGR over 2y
Location
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Computed from 4 filingsDevelops and supplies Compucare hospital management software for private healthcare providers and NHS units, including patient administration and electronic patient record systems, appointment…
Serves private healthcare providers and NHS organisations, including private hospital groups, independent hospitals and clinics, NHS private patient units, therapy and orthotic departments, and…
Financial Health
HealthyHealthy · Profitable, Hiring · 10% CAGR over 3y
Location
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Provides identity and payment technology solutions including smart cards, metal and eco‑friendly payment cards, passport booklets and security documents, biometric authentication, and digital…
Serves banks, fintechs and other financial institutions, alongside government agencies responsible for identity, passports, driver licensing, elections and digital public services worldwide.
Location
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Computed from 5 filingsOperates an online platform that recruits and manages verified participants to complete surveys, experiments, and data annotation tasks, enabling researchers and AI developers to collect…
Sells to AI/ML developers, academic researchers, and organizations across industry and academia that need access to verified human participants and domain experts.
Financial Health
HealthyHealthy · Hiring · 6% CAGR over 4y
Location
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Computed from 5 filingsOperates an online automotive marketplace that lists new and used cars from dealerships and private sellers. Provides vehicle search tools, price analysis, deal ratings, dealer reviews, and car…
Serves UK consumers buying, researching or selling cars, alongside motor dealerships and advertisers targeting used-car shoppers.
Financial Health
HealthyHealthy · -5% CAGR over 4y
Location
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Computed from 4 filingsDevelops supply chain risk management software that maps supplier networks, collects supplier self-assessments, and provides monitoring, verification, and analytics to support regulatory compliance,…
Serves large enterprises and organisations with complex global supply chains, especially procurement, compliance, sustainability and risk teams responsible for supplier oversight and regulatory…
Financial Health
StrongStrong · Growing, Hiring · 8% CAGR over 3y
Location
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Computed from 5 filingsDevelops and operates online social platforms and digital products designed to enable people to chat, meet and interact online. Activities include concept research, software development, brand…
Targets consumers worldwide seeking online social connection, chat and meeting services across multiple consumer social platform brands.
Financial Health
HealthyHealthy
Location
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Computed from 5 filingsProvides AI-powered platform and analyst-led services for global due diligence and third‑party risk assessment. Combines automated screening, intelligence gathering and investigation workflows to…
Serves compliance, risk, legal and investigations teams at global enterprises and risk consultancies managing complex third-party risk across jurisdictions and regulated industries.
Financial Health
StableStable · Hiring · 44% CAGR over 4y
Location
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Operates an online job board and career platform focused on financial services and technology roles. Publishes job listings from employers and recruiters, provides candidate profiles and messaging…
Serves finance and technology professionals seeking roles, plus recruiters and employers hiring talent across banking, financial services, fintech, compliance, data, engineering and related functions.
Financial Health
N/AN/A
Location
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Computed from 5 filingsDevelops a mobile and web transport navigation application that provides journey planning across public transit, walking, cycling and other modes. Maintains transit data for cities and offers…
Sells to urban public transport users via its consumer app, and serves city governments, transport agencies and institutions needing journey planning and rider insights. Also targets brands and…
Financial Health
StrongStrong · -10% CAGR over 4y
Location
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Computed from 4 filingsProvides a platform for employee background checks, identity verification, and drug screening, plus compliance monitoring and digital onboarding tools for document collection, screening scheduling,…
Sells to HR, recruiting and people operations teams hiring at scale, especially SMBs, staffing firms and employers in education, healthcare, manufacturing, on-demand work, remote work, retail,…
Financial Health
StableStable · 0% CAGR over 3y
Location
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Computed from 3 filingsDevelops AI-powered software for enterprise revenue forecasting and reporting. Platform integrates sales and financial data to generate forecasts, pipeline analysis, KPI tracking, scenario modelling,…
Targets CEOs, CFOs, CROs, revenue operations, finance and sales leaders at large enterprises, public companies, and private equity-backed businesses globally.
Financial Health
StableStable · -89% CAGR over 2y
Location
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Computed from 5 filingsProvides document distribution and customer communication services, including hybrid mail, transactional print and post, and multichannel communication portals that automate the production and…
Serves B2B and public-sector organisations across the UK and Europe, including building societies, local authorities, healthcare providers, distributors, automotive/leasing firms and pensions…
Financial Health
StrongStrong · Growing, Hiring · 11% CAGR over 5y
Location
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Computed from 4 filingsDevelops AI software that analyses publicly available data to detect breaking events, emerging threats, and operational risks in real time. Provides alerting and intelligence platforms used by…
Serves large enterprises, government agencies, public sector emergency and law enforcement teams, newsrooms, nonprofits and humanitarian organisations, with buyers in corporate security, cyber risk,…
Financial Health
StrongStrong · Profitable · -8% CAGR over 3y
Location
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Computed from 5 filingsOperates an online marketplace for holiday apartments and homes, allowing travellers to search and book short‑term accommodation directly from private owners. Provides property listings, booking…
Serves holidaymakers seeking privately owned vacation rentals worldwide, alongside private hosts, professional landlords and property managers looking to list accommodations.
Financial Health
StrongStrong
Location
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Computed from 5 filingsOperates an online gambling platform offering slot games, live casino tables such as blackjack and roulette, video poker, scratch cards, and sports betting. Users can register accounts, deposit…
Targets adult consumers in supported international markets who gamble online, including slots, live casino, table game and sportsbook players using multiple currencies and languages.
Financial Health
StrongStrong · Hiring · 14% CAGR over 4y
Location
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Computed from 3 filingsProvides an online contact data platform that helps sales and recruitment teams find professional email addresses and phone numbers. Offers a search portal, Chrome extension, API access, data…
Serves B2B teams doing outbound prospecting, especially recruiters and sales reps at startups to Fortune 500 companies, plus businesses using APIs for contact data and enrichment.
Financial Health
WeakWeak · 0% CAGR over 2y
Location
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Computed from 5 filingsOperates an online fashion platform that curates clothing, shoes and accessories for women, men and children from multiple brands, enabling users to browse editorial-style selections and shop…
Sells to consumers shopping online for curated fashion, clothing, shoes and accessories for women, men and children, particularly style-conscious buyers seeking products from multiple premium and…
Financial Health
StableStable · Hiring · 7% CAGR over 5y
Location
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Computed from 2 filingsOperates an online platform that connects researchers, AI developers and organisations with verified human participants to collect survey responses, behavioural data and annotations for academic…
Sells to AI/ML developers, academic researchers, research institutions and organizations needing verified human participants, including AI development teams, universities, and industry research…
Financial Health
StableStable · 0% CAGR over 1y
Location
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Computed from 5 filingsDevelops software for law firms and legal departments to plan, budget and manage legal matters. The platform structures tasks, timelines and financial data, links with time recording and finance…
Serves B2B legal teams in law firms and in-house legal departments, particularly lawyers and operations or finance stakeholders managing complex legal matters and client work.
Financial Health
HealthyHealthy · 0% CAGR over 4y
Location
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Computed from 5 filingsDevelops a digital analytics and customer engagement platform that collects and analyses first‑party data from mobile, web, desktop and IoT applications. Provides dashboards, reporting, automation…
Sells to B2B and enterprise teams building digital products, especially product managers and data analysts in automotive, education, finance, healthcare and telecom. Targets organisations needing…
Financial Health
StrongStrong
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Computed from 5 filingsProvides software and legal advisory services for international immigration, business travel and workforce mobility. Platform offers compliance guidance, visa and work permit management, relocation…
Serves businesses with cross-border workforces, especially HR, global mobility and legal/compliance teams managing employee travel, relocations, immigration and market entry across multiple countries.
Financial Health
HealthyHealthy · Hiring · 85% CAGR over 4y
Location
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Computed from 5 filingsProvides a developer platform for building, deploying and managing applications, APIs, databases and AI workloads. Offers CI/CD pipelines, container and Kubernetes orchestration, GPU compute, and…
Sells to engineering and platform teams at startups and enterprises running cloud-native applications, AI workloads, databases and Kubernetes infrastructure across public cloud or their own VPCs.
Financial Health
StrongStrong · Hiring · 3% CAGR over 4y
Location
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Computed from 5 filingsDevelops advertising technology that generates, tags and tests digital ad creatives using live performance data. Platform enables marketers to produce large volumes of ads and analyse results across…
Serves B2B marketing teams, performance marketers and global CMOs at large consumer brands and agencies running paid social, display, video and retail media campaigns across multiple markets.
Financial Health
StrongStrong · Growing, Hiring · 37% CAGR over 4y
Location
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Computed from 3 filingsOperates an online platform providing verified student reviews of UK universities, courses and student accommodation. Lists purpose-built student housing and university halls, enables comparison of…
Serves UK students choosing universities, courses and accommodation, plus B2B audiences including PBSA operators, universities, accommodation advisors, developers and investors.
Financial Health
HealthyHealthy · Hiring · 44% CAGR over 2y
Location
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Computed from 5 filingsProvides an online assessment platform for schools featuring subject‑specific quizzes and question banks. Software automatically marks student responses, tracks performance by topic and class, and…
Sells to primary and secondary schools, particularly teachers and subject leaders across core and specialist subjects. Also serves students through school accounts and some at-home learners.
Financial Health
HealthyHealthy · Hiring · 21% CAGR over 4y
Location
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Computed from 5 filingsOperates an online lead intelligence platform providing searchable data on professionals, including email addresses, phone numbers and social media profiles, used by sales and marketing teams for…
Serves B2B sales, marketing, recruiting and business development teams seeking professional contact data for prospecting and outreach automation.
Financial Health
StableStable · 0% CAGR over 4y
Location
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Computed from 3 filingsProvides an online lead intelligence platform that aggregates professional contact data, including email addresses, phone numbers and social profiles, and offers search and export tools for…
Serves B2B sales, marketing, recruiting and business development teams seeking professional contact data for prospecting and outreach.
Financial Health
HealthyHealthy
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Computed from 3 filingsProvides a lead intelligence platform that aggregates contact data for professionals, including email addresses, phone numbers and social profiles, and offers search tools and integrations to support…
Sells to B2B sales, marketing and recruiting teams that need professional contact data for lead generation, prospecting and outreach.
Financial Health
WeakWeak · 0% CAGR over 2y
Location
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Computed from 5 filingsProvides lead intelligence software that searches databases of professionals to find email addresses, phone numbers and social media profiles, enabling sales, recruitment and marketing teams to…
Targets B2B sales, recruiting and marketing professionals and teams, including individual prospectors and organisations running outbound outreach and lead generation campaigns.
Financial Health
StableStable · -16% CAGR over 4y
Location
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Computed from 3 filingsProvides a lead intelligence platform that searches databases of professional profiles to find email addresses, phone numbers and social media details, and offers tools to automate prospecting and…
Serves B2B sales and marketing teams, recruiters, and other business users seeking professional contact data for lead generation and outreach.
Financial Health
WeakWeak · 2% CAGR over 2y
Location
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Computed from 5 filingsProvides a lead intelligence platform that searches a database of professionals to identify work email addresses, phone numbers and social profiles, supporting sales, recruiting and marketing teams…
Serves B2B sales, marketing and recruiting teams, including individual prospectors and organisations running outbound lead generation or professional outreach.
Financial Health
StableStable · 0% CAGR over 5y
Location
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Computed from 4 filingsProvides a contact data platform that helps sales and recruitment teams find professional email addresses and phone numbers. Offers a searchable database, Chrome extension, API access, data…
Serves B2B sales teams, recruiters, recruitment coordinators, and data/operations teams at startups, mid-market firms, and Fortune 500 companies.
Financial Health
StrongStrong · Growing · 0% CAGR over 3y
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Computed from 4 filingsDevelops quantum‑safe cybersecurity technology including key exchange protocols and endpoint verification tools for passwordless authentication and secure messaging. Provides cryptographic solutions…
Sells to businesses, large enterprises and government security services seeking quantum-safe security products, particularly in defence and national security, financial services, fraud and identity…
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StrongStrong · Growing, Hiring · 6% CAGR over 3y
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Computed from 4 filingsDevelops a cloud-based customer platform that consolidates customer data, communications and transactions, and provides AI-driven automation, analytics and workflow tools for sales, customer success…
Serves B2B companies from start-ups to enterprises, targeting commercial, customer success, sales/GTM and professional services teams that manage customer relationships and revenue growth.
Financial Health
StrongStrong
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Computed from 3 filingsProvides an online contact discovery and outreach platform offering email and phone lookup for professionals. Includes a searchable database, Chrome extension, data enrichment tools, API access,…
Serves B2B sales teams, recruiters, recruitment coordinators and growth teams, including users in Fortune 500 companies and startups seeking professional contact data for prospecting, hiring and…
Financial Health
StrongStrong · Hiring · 22% CAGR over 2y
Location
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Computed from 5 filingsProvides a lead intelligence platform that searches a database of professionals to find work email addresses, phone numbers and social profiles, and offers tools and APIs to automate prospecting,…
Serves B2B teams that need professional contact data for outreach, including sales, marketing, recruiting and lead generation users.
Financial Health
HealthyHealthy · -70% CAGR over 4y
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Computed from 5 filingsProvides a lead intelligence platform that searches for professional contact information, including email addresses, phone numbers and social media profiles, and offers tools to automate prospect…
Serves B2B sales, marketing, recruiting and business development teams seeking professional contact data for lead generation and outreach.
Financial Health
StableStable · 0% CAGR over 4y
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Computed from 3 filingsProvides an online lead intelligence platform that searches large databases of professionals to identify email addresses, phone numbers and social media profiles, enabling sales, recruiting and…
Serves B2B sales, marketing, recruiting and business development teams that need professional contact data and lead intelligence for outreach to companies and decision-makers.
Financial Health
HealthyHealthy · Hiring · 12% CAGR over 2y
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Computed from 5 filingsDevelops IoT-based monitoring systems and software for housing providers and property managers, including sensors and platforms for boiler performance, damp and mould detection, heat network…
Sells to housing providers, social landlords and property management teams responsible for rented homes, including asset, maintenance, compliance and sustainability teams.
Financial Health
HealthyHealthy · Hiring · 21% CAGR over 4y
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Computed from 2 filingsProvides a lead intelligence platform that helps users find professional contact details, including email addresses, phone numbers and social profiles, and search a database of professionals to…
Sells to B2B sales, marketing and recruiting teams, plus business development professionals and agencies running prospecting and outreach campaigns.
Financial Health
StableStable · 0% CAGR over 1y
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Computed from 5 filingsDevelops and operates a software platform providing marketing and sales automation tools, including sales funnel builders, website and landing page creation, email and SMS marketing, CRM management,…
Sells to small businesses, online entrepreneurs and creators that need marketing, sales funnel, CRM, course, membership, booking and customer communication tools to launch or grow an online business.
Financial Health
StableStable · 0% CAGR over 4y
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Computed from 5 filingsProvides an online lead intelligence platform that searches databases of professionals to find work email addresses, phone numbers and social media profiles, with tools and integrations for…
Serves B2B sales, marketing and recruiting teams that need professional contact data for lead generation, prospecting and outreach.
Financial Health
WeakWeak · -0% CAGR over 4y
Location
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Computed from 2 filingsProvides mapping and location-based APIs for developers, including address autocomplete, geocoding, geolocation, distance calculations, store locator, geofencing and indoor mapping tools used in…
Serves B2B developers, product teams and enterprises, plus public service organisations, in retail, ecommerce, insurance, automotive, logistics, health and wellness, travel, hospitality, finance, and…
Financial Health
StableStable · -50% CAGR over 1y
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Computed from 3 filingsDevelops a cloud-based content collaboration platform for video production teams. Provides HD video conferencing, live streaming from editing software, media review and approval tools, dailies…
Serves solo content creators, production and post-production teams, media companies managing multiple projects, and education institutions including schools, colleges and universities. Also targets…
Financial Health
HealthyHealthy · Hiring · 32% CAGR over 2y
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Computed from 5 filingsProvides a software platform for e‑commerce and retail brands to run referral marketing programmes, enabling customers to share recommendations on social channels, track referrals, reward advocates,…
Serves eCommerce and retail brands, particularly marketing, affiliate and partnerships teams focused on customer acquisition, retention and brand advocacy across online shopping journeys.
Financial Health
WeakWeak · Hiring · 8% CAGR over 4y
Location
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How Google Sign-in 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.
Google Sign-in is a trademark of its respective owner. Firmbase is not affiliated with, sponsored by, or endorsed by the trademark owner.
Other Authentication platforms
Companies using Google Sign-in by city
Frequently asked questions
How many UK companies use Google Sign-in?
How is Google Sign-in usage detected?
What kinds of companies use Google Sign-in in the UK?
What do Google Sign-in users also run?
How fresh is this data?
Can I get contact details for these companies?
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