Companies Using Firebase in London: 160 Active Firms (2026)
Companies running app-backend technology build websites and apps with hosted data, authentication, analytics or deep-linking features across London.
Adoption usually sits with product engineering, mobile engineering and growth teams rather than with a central IT procurement function. Companies running this app-backend stack tend to be business-to-business software, media, startup and IT services operators that need hosted data, sign-in, event tracking or deep-link behaviour inside customer-facing products. The buyer is often a product or engineering lead with enough budget for managed infrastructure, but not always a dedicated platform team. Typical commitments look like continuing cloud subscriptions, SDK maintenance, consent tooling and agency or contractor support, rather than a single software licence. That makes usage a marker of live product operations and measurable acquisition channels.
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London has 160 actively trading companies running this app-backend stack. Reported headcount across the group totals 1,409, so employment is spread across relatively small product teams rather than large enterprise estates. The cohort includes SaaS, media and publishing, startup-labelled and IT services operators, with adoption most visible where the website is part of the product or acquisition funnel rather than a static marketing surface. Turnover scale is mixed: a small subset sits above the high-revenue threshold, while many remain closer to early-commercial or owner-managed profiles.
Companies running SDKs, analytics, deep links or device storage are governed mainly by UK data protection law, not a sector licence. PECR applies when an organisation stores information on, or accesses information from, a user's device, including in apps. ICO guidance expects clear explanations of what cookies and similar technologies do, why they are used, and consent unless an exemption applies. Where personal data is processed, the Data Protection Act and UK GDPR sit alongside those consent duties. gov.uk's voluntary app developer code also points to security basics: permission minimisation, encryption in transit and local protection where needed.
The cohort's early-commercial weight suggests churn in the stack will continue: some teams will outgrow managed backends, while others will prefer bundled services that reduce operational overhead. Privacy work tends to make adoption stickier, because consent records, event schemas and authentication flows are expensive to revisit once live. Scale-up scarcity points to a market where the technology is common enough among product-led businesses, but not a simple proxy for company maturity. Procurement may also become more formal as security reviews, app permissions and external SDK inventories move closer to board-level risk registers.
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 Firebase rises with company size across the trading companies in this cohort. 0% of the 532,485 companies with under 10 employees run Firebase (114 detected). 0.3% of the 15,364 companies with 10–50 employees run Firebase (39 detected). 0.3% of the 1,763 companies with over 50 employees run Firebase (6 detected). That is a 0.3% gap between the over 50 employees and under 10 employees bands.
160
Active firms
2026
9
Above £5M turnover
Trading firms
6
Median headcount
Filed accounts
388
Verified directors
Across this cohort
Top companies using Firebase 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 4 filingsProvides cloud-based HR, payroll and recruitment software for businesses. Platform includes tools for payroll processing, pension submissions, employee onboarding, time and attendance tracking,…
Serves UK SMEs and SMB employers, especially HR, payroll and hiring teams. Also targets accounting firms, payroll bureaus and referral partners serving small-business clients.
Financial Health
StrongStrong · Hiring · 100% CAGR over 3y
Location
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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
Location
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Provides personalised weight‑loss programmes combining prescription GLP‑1 medication or meal‑replacement products with behavioural support delivered through a mobile app. Also sells nutrition…
Serves adults seeking weight management support, including self-paying consumers and NHS patients referred through partner programmes such as Momenta, Oviva and Xyla.
Financial Health
N/AN/A
Location
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Computed from 5 filingsProvides cloud communications platforms including CPaaS messaging, voice, video and email APIs, plus contact centre and unified communications services. Offers chatbots, campaign management,…
Serves businesses adopting customer engagement, contact centre and collaboration platforms, including customer experience, IT and workforce teams. Targets organisations needing CPaaS, UCaaS and…
Financial Health
DistressedDistressed · -7% CAGR over 4y
Location
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Computed from 4 filingsDevelops software that provides digital receipt and post‑purchase engagement tools for retailers. Platform links in‑store transactions to customer profiles, delivers receipts via digital channels,…
Serves independent, mid-sized and enterprise retailers and growing consumer brands, with their shoppers as end users.
Financial Health
StrongStrong · Hiring · 63% CAGR over 3y
Location
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Computed from 2 filingsProvides a web platform offering audience engagement tools for publishers and websites, including comment systems, interactive widgets, quizzes, social sharing features, and analytics tools for…
Sells to B2B customers operating websites, especially digital publishers, media brands and content teams with audience communities and first-party data needs.
Financial Health
StableStable · 0% CAGR over 1y
Location
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Computed from 5 filingsProvides a platform for managing in‑store digital marketing tools including dynamic QR codes, touchscreen kiosks and syndicated product pages. Enables brands to publish interactive retail content,…
Serves B2B marketing and retail teams at consumer brands and retailers seeking to influence shoppers at the point of purchase across physical stores and digital channels.
Financial Health
StrongStrong · Growing, Hiring · 22% CAGR over 4y
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Computed from 5 filingsProvides AI-based software platform for digital advertising teams that collects and analyses impression-level campaign and transaction data, automates reporting and data consolidation, and optimises…
Sells to B2B advertisers, biddable media teams and paid media agencies managing multi-platform digital advertising campaigns, including marketing and digital data leaders seeking campaign performance…
Financial Health
StableStable · -3% CAGR over 4y
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Computed from 3 filingsDevelops cloud-based management information and finance software for education institutions. Provides systems for pupil data management, school administration, accounting, parent and student portals,…
Serves education-sector organisations, including primary and secondary schools, multi-academy trusts, SEND and all-through schools, maintained schools, local authorities and school finance or…
Financial Health
StrongStrong · Profitable
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Computed from 5 filingsOperates an online platform for residential property transactions, enabling users to search for homes for sale or rent and access related services including estate agent listings, mortgage brokerage,…
Serves UK residential property buyers, sellers, renters and homeowners, including people needing mortgages, conveyancing and estate-agent support during a home move.
Financial Health
HealthyHealthy · Hiring · 42% CAGR over 4y
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Computed from 5 filingsDevelops software for managing, annotating and curating multimodal datasets used to train and evaluate AI models. Platform supports video, images, text, LiDAR and sensor data, with tools for data…
Serves B2B AI and machine learning teams at enterprises building physical, frontier and applied AI systems, including robotics, autonomous vehicles, drones, smart spaces and generative AI.
Financial Health
StrongStrong · Growing, Hiring · 100% CAGR over 4y
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Computed from 5 filingsProvides a mobile app offering short‑term cash advances and income top‑ups, typically up to £500, repaid in instalments through a subscription model. Also offers features intended to help users build…
Serves UK consumers with low credit scores, bad credit histories or fluctuating pay who need short-term cash access, income top-ups and credit-building support via a mobile app.
Financial Health
StableStable · 0% CAGR over 4y
Location
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Computed from 3 filingsOperates an online cryptocurrency exchange and financial platform enabling users to buy, sell, trade, and store digital assets. Provides spot trading, instant purchase, wallet services, and staking…
Sells to retail cryptocurrency users and active traders, plus business customers seeking crypto services and partnerships. Targets global users, with some products and offers tailored by country or…
Financial Health
StableStable · -34% CAGR over 2y
Location
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Computed from 5 filingsDevelops browser extensions, apps and a web browser that allow users to share browsing and online activity data, block trackers and advertisements, and earn points that can be redeemed for gift cards…
Targets individual internet users, especially consumers who want to earn rewards from sharing browsing, app, email or shopping data while using browser and extension products.
Financial Health
StableStable · Hiring · 8% CAGR over 3y
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Provides alternative data analytics platform for investment managers, integrating multiple third‑party and proprietary datasets with financial KPIs. Enables data discovery, evaluation and modelling…
Serves institutional investors and investment teams, including hedge funds, asset managers, pension funds and asset owners, plus alternative data vendors seeking access to discretionary investor…
Financial Health
N/AN/A
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Computed from 5 filingsOperates an online platform that connects individuals seeking home care with vetted private carers. Enables users to search, compare and book carers for live‑in, hourly or overnight care, and…
Sells to private clients and families seeking in-home care for themselves or loved ones, including live-in, hourly and overnight care users. Also serves self-employed private carers looking to find…
Financial Health
StableStable · Hiring · 11% CAGR over 4y
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Computed from 5 filingsDevelops accounts receivable automation software that helps businesses manage outstanding invoices, send automated payment reminders via email, SMS and calls, monitor debtor activity, forecast cash…
Serves B2B finance and accounts receivable teams at businesses worldwide, plus accountants and bookkeepers supporting clients with late-payment and receivables processes.
Financial Health
StableStable · Hiring · 13% CAGR over 4y
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Computed from 5 filingsOperates an online peer‑to‑peer lending platform that connects individual lenders with borrowers, offering consumer loans positioned as an alternative to credit cards and providing supporting web and…
Serves UK consumers seeking an alternative to credit cards, with a peer-to-peer model that also addresses individual lenders/investors.
Financial Health
WeakWeak · -10% CAGR over 4y
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Computed from 5 filingsDevelops digital healthcare platforms including patient apps and online portals, and builds virtual wards and remote clinics for clinicians. Also develops smartwatch‑based monitoring tools to track…
Serves patients seeking healthcare services, including general practice and specialist clinics, via online clinics, virtual wards and apps. Targets multilingual patient groups, with dedicated…
Financial Health
StableStable · 0% CAGR over 4y
Location
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Computed from 5 filingsProvides software for e‑commerce brands to manage ambassador and influencer marketing programmes. The platform supports recruiting ambassadors, coordinating campaigns, tracking referrals and…
Sells to eCommerce brands and marketing teams that use ambassadors, influencers, affiliates, customers and fans to drive community-led sales, content, launches and social media engagement.
Financial Health
StableStable · Hiring · 13% CAGR over 4y
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Computed from 3 filingsDevelops product performance management software for e‑commerce retailers. Platform analyses product‑level marketing and business data, manages product catalogue promotion, and generates dynamic…
Serves e-commerce retailers and online brands, targeting performance marketers, digital designers, category managers and CMOs responsible for product-level advertising, catalogues and creative.
Financial Health
DistressedDistressed · -15% CAGR over 2y
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Computed from 2 filingsProvides ad technology for online publishers that detects and measures traffic from users with ad blockers (“dark traffic”) and serves alternative ads to recover blocked impressions, with analytics…
Sells primarily to digital publishers and media owners, including publisher operations and revenue teams, plus adtech/ad-management partners working with publishers. The site also addresses…
Financial Health
DistressedDistressed · 0% CAGR over 1y
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Computed from 4 filingsOperates an online food ordering and delivery platform connecting customers with restaurants. Provides mobile and web ordering, order tracking, and a network of delivery partners that collect and…
Serves consumers ordering restaurant meals, restaurant owners seeking online ordering and delivery, and independent couriers looking for flexible delivery work.
Financial Health
HealthyHealthy · Hiring · 9% CAGR over 3y
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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 4 filingsProvides treasury advisory and software for businesses trading internationally, including FX risk analysis and hedging, cash management, bank relationship management, and working capital advice,…
Serves B2B finance teams and CFOs at internationally trading startups, scaleups and mid-market firms, especially e-commerce, travel, logistics, wholesale, staffing and professional services, plus…
Financial Health
StrongStrong · Hiring · 14% CAGR over 3y
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Computed from 5 filingsDevelops an online software platform for mortgage intermediaries and advisers that supports managing client cases, processing mortgage applications, and administering related documentation and…
Serves UK mortgage intermediaries and advisers, including broker firms and advisory teams operating in the mortgage advice market.
Financial Health
HealthyHealthy · Hiring · 19% CAGR over 4y
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Computed from 5 filingsOperates an online and app-based minicab booking service providing private hire transport for local journeys and airport transfers. Accepts bookings via website, mobile app, phone and WhatsApp, and…
Serves consumers and business account customers in London, including families, airport passengers, business travellers, hotel and hospital transport users, and courier or removal customers.
Financial Health
HealthyHealthy · -8% CAGR over 4y
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Computed from 3 filingsProvides a fintech platform that finances telecom and digital economy receivables. Connects businesses with institutional lenders through automated funding, reverse factoring, and asset‑based…
Serves fast-growing B2B telecom and digital-economy companies with receivables, including suppliers, sellers and debtors in supply chains, plus institutional lenders, insurers and partners involved…
Financial Health
StableStable · Hiring · 100% CAGR over 2y
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Computed from 5 filingsOperates an online marketplace that connects businesses and individuals with student freelancers to complete short-term tasks such as marketing, promotions, and administrative work. Also provides a…
Serves startups, established companies, brands and marketing teams seeking student talent or Gen Z audiences, alongside members of the public posting tasks and students seeking flexible work.
Financial Health
StableStable · -50% CAGR over 4y
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Computed from 5 filingsProvides an online platform for creating, marketing and delivering online courses. Includes tools for course hosting, membership sites, community features, email marketing, sales funnels, webinars,…
Serves online course creators, coaches, educators and training businesses selling digital courses, memberships, communities, live classes or webinars, with a focus on users needing sales and…
Financial Health
HealthyHealthy · 0% CAGR over 4y
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Computed from 4 filingsDevelops cloud-based payroll software for accountants, bookkeepers and payroll bureaux. Platform automates pay runs, timesheets, employee self‑service, pension auto‑enrolment, HMRC RTI reporting,…
Sells to UK payroll bureaux, accountancy firms and bookkeeping businesses that manage payroll for client employers, including firms needing bureau or reseller arrangements.
Financial Health
WeakWeak · -4% CAGR over 3y
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Computed from 5 filingsDevelops event management software for organising in‑person, virtual and hybrid events. Platform includes online registration, event websites, mobile apps, virtual venues, attendee check‑in, badging,…
Serves B2B event organisers and organisations managing in-person, virtual or hybrid events, including teams needing attendee registration, event websites, mobile apps, badging and check-in workflows.
Financial Health
DistressedDistressed · -24% CAGR over 4y
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Computed from 5 filingsProvides technology-enabled B2B survey services for due diligence and market research. Recruits and vets global respondents, runs qualitative and quantitative surveys, and offers a platform with…
Serves private equity, growth equity, venture capital and private debt firms, strategy consultancies, public markets teams and major corporations seeking global B2B and niche B2C respondent access.
Financial Health
WeakWeak · -5% CAGR over 3y
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Develops an AI software platform for e‑commerce operations that integrates with platforms such as Shopify, BigCommerce and Adobe Commerce to monitor data, automate workflows, run AI agents, and…
Serves eCommerce merchants and brands, commerce and brand teams, digital agencies managing client portfolios, and SaaS/technology partners, particularly those using Shopify Plus, BigCommerce or Adobe…
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Computed from 5 filingsDevelops a cloud-based analytics platform that connects to databases and business tools, enabling teams to query data with AI, build metric trees and dashboards, perform collaborative analysis, and…
Sells to B2B data, analytics and business teams at organisations that need collaborative BI across data warehouses, semantic layers, spreadsheets and SaaS tools.
Financial Health
StrongStrong · Growing, Hiring · 24% CAGR over 4y
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Computed from 5 filingsProvides foreign exchange and international payment services for private and corporate clients, enabling currency trading, overseas transfers, and FX risk management products including spot trades,…
Serves private individuals making overseas payments or purchases, and corporate clients with international payment needs, including importers/exporters and businesses using spot, forward, stop or…
Financial Health
WeakWeak · -73% CAGR over 4y
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Computed from 5 filingsDevelops mobile health and wellbeing applications and motion‑sensing technology. Products include apps for recording and tracking snoring, sleep monitoring and smart alarms, exercises for snorers,…
Serves B2C mobile app users, particularly people who snore, want to track sleep or improve waking routines, and consumers interested in relaxation, breathing exercises and ASMR experiences.
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StrongStrong · Growing, Hiring · 26% CAGR over 4y
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Computed from 5 filingsDevelops and operates an online educational platform for children focused on reading and writing skills. Provides interactive lessons, creative writing activities, worksheets, and teaching resources,…
Serves parents, homeschool families and primary/elementary teachers seeking reading and writing support for children, with materials for classrooms, summer learning and home use.
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StableStable · Hiring · 26% CAGR over 4y
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Computed from 5 filingsDevelops cloud-based transport management software for logistics companies, providing tools for order entry, route planning, documentation, invoicing, integrations, and CO2 tracking, with AI features…
Sells to transport and logistics businesses, especially carriers, freight forwarders and 3PLs. Targets operational, planning, finance and leadership teams managing haulage, distribution, intermodal,…
Financial Health
StrongStrong · Growing, Hiring · 47% CAGR over 4y
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Computed from 4 filingsOperates a network of automated parcel lockers and partner shops enabling users and retailers to send, collect and return parcels. Provides contact‑free drop‑off, temporary storage and tracking…
Serves UK consumers, online shoppers, marketplace sellers, and ecommerce retailers needing parcel sending, collection and returns options through lockers and shops.
Financial Health
StableStable · Hiring · 20% CAGR over 3y
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Computed from 5 filingsDevelops legal technology platforms that connect entrepreneurs and high‑net‑worth individuals with law firms. Provides tools for managing legal transactions, client relationships, compliance, and…
Serves both B2B and end clients in legal services: law firms seeking client management and lead generation, plus entrepreneurs and high-net-worth individuals needing legal support across business…
Financial Health
WeakWeak · Hiring · 19% CAGR over 4y
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Computed from 5 filingsProvides a data collection and market intelligence platform that gathers geospatial, retail, and survey data through a global network of contributors. Delivers location intelligence, audience…
Serves B2B and public-sector decision-makers needing local market, geospatial, audience and situation insights, including international development organisations, location-driven businesses, public…
Financial Health
StrongStrong · Hiring · 71% CAGR over 4y
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Computed from 5 filingsOperates an online marketplace for rubbish removal and waste collection services, allowing users to post clearance jobs, receive quotes from licensed collectors, compare prices and reviews, and…
Targets consumers and businesses with ad hoc rubbish clearance needs, including homeowners, tenants, builders, decorators, solar installers and organisations disposing of reusable items.
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StrongStrong · Hiring · 19% CAGR over 4y
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Computed from 5 filingsDevelops software that processes alternative datasets, mapping data to listed companies and analysing signals for financial markets. Provides tools that help investment funds and data providers…
Serves capital markets organisations, particularly investment funds using alternative data and data providers selling datasets to investors.
Financial Health
HealthyHealthy · Hiring · 16% CAGR over 4y
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Computed from 5 filingsProvides an online financial wellbeing platform offering educational content, tools and guidance on pensions, additional voluntary contributions (AVCs), budgeting, insurance and savings. The platform…
Sells to employers seeking financial wellbeing support for their workforce, and to employees using workplace-provided financial education and guidance. Targets organisations offering pension, AVC and…
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HealthyHealthy · Hiring · 32% CAGR over 4y
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Computed from 5 filingsDevelops a mobile app that provides digital relationship and sex therapy programmes for couples. The platform offers assessments, guided courses, journaling tools, educational articles and exercises…
Serves consumers, particularly couples and individuals seeking app-based support for libido challenges, desire differences, sex therapy topics, relationship stress and intimacy.
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HealthyHealthy · -11% CAGR over 4y
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Computed from 5 filingsDevelops mobile and web applications for inspections and site audits, including tools for managing projects, completing checklists, documenting issues with photos, and generating PDF reports and…
Serves App Store users and businesses, including small and large enterprises that manage site audits, inspections, project documentation and reporting across varied industries.
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HealthyHealthy · Growing · 0% CAGR over 4y
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Computed from 3 filingsProvides e‑commerce logistics and fulfilment services for online brands, including warehousing, order processing, shipping, delivery tracking, and returns management. Offers software integrations…
Serves e-commerce and omnichannel brands, especially scaling consumer brands in fashion, accessories, beauty, wellness and food, across direct-to-consumer, wholesale, retail locations and…
Financial Health
StrongStrong · Hiring · 29% CAGR over 2y
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Computed from 2 filingsDevelops workplace experience software that enables organisations to manage employee communications, intranet content, digital signage, room and desk reservations, visitor management, and workplace…
Sells to organisations managing employee communications and workplaces, including communications, workplace, facilities and IT teams. Targets businesses in financial services, healthcare, industrial…
Financial Health
StableStable · Hiring · 13% CAGR over 1y
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Computed from 2 filingsProvides software and consultancy for managing payments in construction and infrastructure projects. Platform supports ring‑fenced trust accounts, digital approvals, reporting, and automated…
Serves public and private sector construction project stakeholders, including developers, lenders, contractors and project owners across housing, regeneration, commercial development, civils,…
Financial Health
HealthyHealthy · Hiring · 75% CAGR over 1y
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Key facts
About 5% of the trading cohort reports turnover above £5M (9 of 160 firms) — the rest sits below that revenue band.
10% of the cohort was incorporated since 2022 (17 firms), so a sizeable share is in its first few filing cycles.
50.6% of the London app-backend cohort also run an edge-security or CDN service, which points to public-facing web products rather than only internal tooling.
SaaS is the largest overlapping sector tag at 21.9%, followed by Media & Publishing at 16.3% and Startup at 15.0%.
The UK Digital Sector accounted for 6.8% of UK GVA in 2024, worth £177.2 billion in current prices.
ICO guidance says PECR regulation 6 applies where an organisation stores information on, or gains access to information on, a user’s device.
GOV.UK’s voluntary app code says developers should use industry-standard encryption for data in transit and should not request permissions that are not functionally required.
What else do Firebase users run?
Share of the 160 Firebase-running UK companies where each technology was also detected. As of June 2026.
Who runs Firebase 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
£468.4K
Median UK turnover
5.6%
Above £5M turnover
17
Incorporated since 2022
Verified directors — included in the file
Director names and roles for these 267 companies, alongside financials and websites, in one Excel + CSV file.
How Firebase 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.
Firebase is a trademark of its respective owner. Firmbase is not affiliated with, sponsored by, or endorsed by the trademark owner.
Firebase elsewhere
Frequently asked questions
How many companies in London use Firebase?
How is Firebase usage detected?
What kinds of companies use Firebase in London?
What do Firebase users in London also run?
How fresh is this data?
Can I get contact details for these companies?
Buy all 267 companies as a spreadsheet.
One Excel/CSV file with company details, websites and key data — yours to download and use.