Companies Using Google Sign-in in London: 139 Active Firms (2026)
Companies using federated sign-in in London let website users authenticate through third-party identity providers under UK GDPR security duties.
Account-based digital services tend to adopt federated sign-in once login friction starts to affect acquisition, support load and repeat usage. Third-party identity sign-in handles authentication without asking users to create another password, while still leaving the service responsible for consent, session security and account recovery. In practice, adoption signals a public website with genuine customer or member accounts, an engineering owner for authentication, and enough budget for external identity dependencies. The buyer shape is usually SME or mid-market rather than enterprise-only: marketplaces, education platforms, media subscriptions, SaaS dashboards and finance services with recurring logins.
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London has 139 companies running this federated sign-in pattern on public websites. Reported employment totals 1,117 people, pointing to an adoption base weighted toward small operating teams rather than large enterprise estates. Companies can sit in more than a single commercial category, but the visible mix is mostly software and service platforms: SaaS accounts for 20.9% of the cohort, Travel and Hospitality 10.8%, Marketing Agency 7.9%, Field Services and Trades 7.9%, and Real Estate and Property 7.2%. Running adjacent website infrastructure and analytics tools is common, which fits a marketing-led acquisition model with recurring customer login.
UK services running third-party sign-in generally face horizontal data-protection and security duties rather than a sector-specific licence. The ICO treats online identifiers as personal data, with biometric identification falling into special category data. Its authentication guidance expects appropriate technical and organisational measures; single sign-on may reduce password burden, but organisations are expected to document the security assessment and consider the consequences if the federated route is compromised. Identity-verification providers sit closer to the Office for Digital Identities and Attributes regime: the gamma trust framework became statutory under section 28 of the Data (Use and Access) Act, with effect from 1 December 2025.
Adoption appears likely to keep following product maturity rather than a compliance trigger. Consumer-facing platforms and business software services tend to add federated sign-in when acquisition teams want lower registration friction, then revisit account recovery, logging and consent as privacy scrutiny rises. Smaller operators may keep using bundled website authentication for longer, while scale-ups push identity work into owned engineering roadmaps. Vendor consolidation in the wider identity stack may make procurement easier, but it also concentrates operational dependency around external login routes, which security teams will need to evidence and test.
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 532,485 companies with under 10 employees run Google Sign-in (102 detected). 0.2% of the 15,364 companies with 10–50 employees run Google Sign-in (32 detected). 0.3% of the 1,763 companies with over 50 employees run Google Sign-in (5 detected). That is a 0.3% gap between the over 50 employees and under 10 employees bands.
139
Active firms
2026
6
Above £5M turnover
Trading firms
5
Median headcount
Filed accounts
262
Verified directors
Across this cohort
Top companies using Google Sign-in in London
Ranked by sales-readiness score: an AI model assesses what each company does, its sector and size, and scores its overall fit. Best-fit prospects appear first.
Financial sub-scores
Computed from 5 filingsOperates an online marketplace connecting authors with freelance publishing professionals, including editors, designers, marketers, translators and ghostwriters. Also provides writing software,…
Serves authors and writers, especially independent and self-publishing authors, looking to hire publishing professionals and use writing, learning, review, and promotion resources.
Financial Health
StableStable · Hiring · 13% CAGR over 4y
Location
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Provides a cloud-based website building platform offering drag‑and‑drop design tools, templates and AI features to create websites. Includes web hosting, domain registration, e‑commerce tools,…
Serves B2C and B2B users: individuals, entrepreneurs, small businesses, online retailers, restaurants, bloggers and portfolio creators, plus agencies, freelancers, developers and enterprise teams.
Financial Health
N/AN/A
Location
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Computed from 3 filingsOperates an online marketplace for buying and selling vintage and antique furniture and homeware, including lighting, art, rugs and decor. Connects independent dealers and sellers with consumers…
Serves consumers and interior buyers seeking vintage and antique furniture, homeware, lighting, art and rugs, alongside dealers and sellers listing items on its marketplace.
Financial Health
DistressedDistressed · -26% 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 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 3 filingsDevelops and operates an online learning platform offering digital flashcards, practice tests, study guides and textbook solutions. Enables students and teachers to create, share and study learning…
Serves students, teachers and schools seeking digital study tools, classroom activities and subject revision support across a wide range of academic levels and subjects.
Financial Health
DistressedDistressed · -27% CAGR over 2y
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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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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
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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 filingsOperates an online marketplace for discovering and booking event venues. Lists spaces such as meeting rooms, party venues and conference facilities, allowing users to search by location, capacity and…
Serves consumers, event organisers and business teams seeking venues for private parties, meetings, corporate events and gatherings across the UK and other listed international markets.
Financial Health
HealthyHealthy · -24% CAGR over 4y
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
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Computed from 5 filingsProvides an online learning platform offering interactive courses and tutorials in data science, machine learning, artificial intelligence, programming, statistics, data engineering and cloud…
Serves individual learners and organisations seeking data, AI, cloud, analytics and software skills, from beginners to advanced practitioners and business teams using Python, SQL, R, Power BI and…
Financial Health
StableStable · -63% CAGR over 4y
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Develops and operates a SaaS business automation platform using AI agents to manage sales pipelines, customer communications, and marketing workflows, with tools for email responses, SMS and WhatsApp…
Serves small and medium-sized businesses and agencies managing sales, marketing, recruitment, customer support and client communications, including agencies running sub-accounts for their own clients.
Financial Health
N/AN/A
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Provides an online platform for hosting virtual and hybrid events, including conferences, webinars, workshops, meetups, job fairs and trade shows, with tools for scheduling sessions, multiple hosts,…
Serves organisations running virtual or hybrid events, including event, marketing, HR and community teams hosting conferences, webinars, workshops, job fairs, expos, hackathons and meetups.
Financial Health
N/AN/A
Location
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Computed from 5 filingsProvides an online lead intelligence platform that aggregates professional contact data, including email addresses, phone numbers and social profiles, and offers search tools and integrations for…
Serves businesses, particularly sales, marketing and recruiting teams conducting outbound outreach to professional contacts.
Financial Health
DistressedDistressed · -16% CAGR over 4y
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Computed from 3 filingsDevelops a data analytics and marketing platform for mobile games and apps. Provides tools for data integration, attribution analysis, LTV and ROAS prediction, SKAN modelling, and automated insights…
Serves B2B customers in the mobile games and apps sector, including game studios, publishers, and growth or marketing teams using MMP, ad network, monetisation and user acquisition data.
Financial Health
DistressedDistressed · -13% CAGR over 2y
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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
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Computed from 4 filingsOperates an online platform that analyses resumes and LinkedIn profiles using automated tools, providing scores, feedback, keyword matching against job descriptions, resume samples, and writing…
Sells to individual jobseekers, including experienced professionals, graduates and students, who want to improve resumes and LinkedIn profiles for job applications and career progression.
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StableStable · 0% CAGR over 4y
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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
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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
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Computed from 4 filingsOperates an online job board focused on the energy sector, allowing candidates to upload CVs, search and apply for vacancies, and follow employers, while providing recruitment services and job…
Serves both B2C and B2B: energy-sector jobseekers looking for roles, and employers, recruiters and hiring teams in energy and related engineering businesses seeking candidates.
Financial Health
WeakWeak · -80% CAGR over 3y
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Operates an online trading platform providing access to CFD trading on foreign exchange, stocks, cryptocurrencies, indices, commodities and precious metals. Offers web and mobile trading via…
Targets retail, active and high-volume traders seeking access to forex, CFDs, cryptocurrencies, futures and precious metals, with multilingual support across 50+ countries.
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Computed from 3 filingsProvides software tools for landlords and property investors to source and analyse property deals, manage portfolios and tenancies, track rental income and expenses, generate tax reports, and apply…
Serves individual and professional landlords, buy-to-let investors and property portfolio owners, including those sourcing auction or agent-listed properties and seeking mortgages, remortgages or…
Financial Health
StableStable · Hiring · 22% CAGR over 2y
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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
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Computed from 3 filingsProvides a database and software tools that identify business professionals’ email addresses, phone numbers and social profiles, enabling sales, recruiting and marketing teams to research prospects…
Serves B2B sales, marketing, recruiting and business development teams that need professional contact data for prospecting and outreach, from small businesses to larger organisations.
Financial Health
StableStable
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Computed from 5 filingsServes a mix of B2C and B2B customers, including individuals, small businesses, online sellers, restaurants, agencies, freelancers, developers and enterprises needing websites, eCommerce, booking and…
Financial Health
StableStable · -7% CAGR over 4y
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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
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Computed from 5 filingsOperates an online platform that connects customers with service providers for household services including cleaning, handyman work, pest control, and home moving. Provides booking, account…
Serves household customers and businesses needing local cleaning, handyman, pest control and moving providers, while also targeting tradespeople and service providers who want to join the platform.
Financial Health
StrongStrong
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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 tools and integrations for…
Serves B2B sales, marketing and recruiting teams seeking professional contact data and lead intelligence for outreach.
Financial Health
HealthyHealthy · Hiring · 16% CAGR over 2y
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Computed from 5 filingsOperates an online recruitment portal for the hospitality and catering industry, connecting restaurants and employers with chefs, kitchen staff and waitstaff. Supports hiring for temporary,…
Serves restaurants, catering businesses and event employers needing temporary or permanent kitchen staff, alongside chefs and hospitality workers seeking roles across kitchen and waiting positions.
Financial Health
StableStable · 0% 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
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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 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
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Computed from 5 filingsProvides a lead intelligence platform that searches databases to identify professionals’ email addresses, phone numbers, and social profiles. Offers tools and integrations for sales, recruiting, and…
Serves B2B sales, marketing and recruiting teams that use professional contact data for lead generation and outreach.
Financial Health
WeakWeak · Hiring · 9% CAGR over 4y
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Computed from 4 filingsProvides sales training, certification and software based on the MEDDPICC sales qualification methodology. Offers playbooks, online courses and a SaaS operating system with opportunity management,…
Serves B2B companies with sales, revenue and go-to-market teams, targeting sales leaders, sellers and enablement teams adopting MEDDPICC across their organisation.
Financial Health
StableStable · 0% CAGR over 3y
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Computed from 5 filingsOperates an online platform and mobile app that enables users to create personalised greeting cards and postcards using their own photos and messages. Prints and posts the cards to recipients for…
Serves consumers using mobile and web apps who send personalised greeting cards and postcards to family, partners and friends for birthdays, holidays and life events.
Financial Health
WeakWeak · -11% CAGR over 4y
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Computed from 5 filingsProvides international money transfer services through an online platform and mobile app. Enables users to send funds to bank accounts, payment cards, mobile wallets, or for cash collection, and…
Targets consumers, particularly migrants and expatriates, sending international remittances to family and contacts, with corridors including the Middle East, North Africa and other global…
Financial Health
WeakWeak
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Computed from 3 filingsOperates an online platform and mobile app that connects users with licensed psychologists for remote therapy and psychological counselling. Provides therapist matching, introductory video calls,…
Targets consumers worldwide seeking remote mental health support, including individuals dealing with stress, anxiety, depression or general therapy needs, with multilingual access.
Financial Health
WeakWeak
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Computed from 5 filingsOperates an online pharmacy supplying prescription and over-the-counter medicines. Provides online consultations for treatments such as weight loss, sexual health and dermatology, dispenses…
Serves UK consumers seeking online access to prescription treatments, over-the-counter medicines, skincare, supplements, NHS medicine delivery, and private or veterinary prescription fulfilment.
Financial Health
WeakWeak · 0% CAGR over 4y
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Computed from 4 filingsProvides an online database and search tools for finding professional contact information, including email addresses, phone numbers and social profiles. Offers lead intelligence and integrations to…
Serves B2B sales, marketing and recruitment teams that need professional contact data for prospecting, outreach and lead generation.
Financial Health
DistressedDistressed · -23% CAGR over 3y
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Computed from 3 filingsDevelops and provides RiskStore, a software platform for managing organisational risk, vendor risk and compliance. Enables risk assessments, supplier evaluations, remediation tracking and reporting.…
Serves businesses and organisations with cyber, vendor and compliance risk responsibilities, including teams needing supplier assessments, internal compliance oversight, managed services or…
Financial Health
DistressedDistressed · -11% CAGR over 2y
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Computed from 3 filingsProvides cloud-based contact centre software for call centres and workgroups, including IVR and ACD systems, call queue management, omnichannel routing for phone, chat, email and messaging, plus…
Sells to B2B contact centres, workgroups and help desks, from small businesses to large enterprises, especially managers responsible for inbound and outbound customer communications.
Financial Health
DistressedDistressed · -12% CAGR over 2y
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Computed from 5 filingsTargets consumers, entrepreneurs, small businesses, online retailers, restaurants, bloggers, portfolio-led creatives, agencies, freelancers, developers and enterprise teams managing an online…
Financial Health
HealthyHealthy · -67% CAGR over 4y
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Computed from 5 filingsServes consumers, small businesses and entrepreneurs building websites, plus agencies, freelancers, developers and enterprise teams managing client or large-scale web projects.
Financial Health
HealthyHealthy · Hiring · 19% CAGR over 4y
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Computed from 5 filingsProvides an online lead intelligence platform that identifies business professionals and supplies associated email addresses, phone numbers and social profiles, enabling users to search contacts and…
Sells to B2B teams that need prospecting data, especially sales, marketing, recruiting and business development users seeking contact details for professionals and companies.
Financial Health
HealthyHealthy · Hiring · 14% CAGR over 4y
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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
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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
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Computed from 3 filingsProvides online travel safety and workplace security training for organisations, including customised e‑learning courses and short micro‑video modules covering risk awareness, crisis management, and…
Serves businesses and organisations with travelling or globally deployed staff, targeting security, risk, HR and travel management teams responsible for employee travel safety, workplace security and…
Financial Health
HealthyHealthy · Growing, Hiring · 5% CAGR over 2y
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Computed from 3 filingsProvides an online lead intelligence platform and database that identifies email addresses, phone numbers and social media profiles for professionals and companies, used by sales and marketing teams…
Serves B2B sales, marketing and recruiting teams that need professional contact data for lead generation, prospecting and outreach.
Financial Health
StableStable · -29% CAGR over 2y
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Operates an online investment platform enabling users to co‑invest in collections of fine wine through syndicates, providing fractional ownership. Manages sourcing, storage, insurance and sale of…
Serves retail and higher-net-worth investors seeking access to fine wine as an alternative asset, including those wanting fractional wine syndicates or private wine portfolios.
Financial Health
N/AN/A
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Key facts
About 4% of the trading cohort reports turnover above £5M (6 of 139 firms) — the rest sits below that revenue band.
10% of the cohort was incorporated since 2022 (15 firms), so a sizeable share is in its first few filing cycles.
UK GDPR treats online identifiers as personal data, so companies running third-party sign-in need ICO-aligned authentication controls rather than a sector-specific licence.
The ICO says online services protecting personal data must use “appropriate technical and organisational measures”; its authentication guidance says single sign-on can reduce password burden if the security assessment is documented.
Content-management tooling is the most common adjacent website component, detected at 73.4% of the London cohort; analytics and tag-management tools follow at 66.9% and 56.8%.
SaaS is the largest sector tag at 20.9%, followed by travel and hospitality at 10.8%; tags overlap, so these shares are not a clean industry split.
The UK digital identity benchmark counted 266 firms in 2025, with 69% offering identity or attribute verification and 51% supporting digital identity creation and management.
What else do Google Sign-in users run?
Share of the 139 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.
5
Median headcount
£501.8K
Median UK turnover
4.3%
Above £5M turnover
15
Incorporated since 2022
Verified directors — included in the file
Director names and roles for these 241 companies, alongside financials and websites, in one Excel + CSV file.
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.
Google Sign-in elsewhere
Frequently asked questions
How many companies in London use Google Sign-in?
How is Google Sign-in usage detected?
What kinds of companies use Google Sign-in in London?
What do Google Sign-in users in London also run?
How fresh is this data?
Can I get contact details for these companies?
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