Companies Using Amazon S3 in London: 1,236 Active Firms (2026)
Companies using cloud storage in London run object-based file hosting and content delivery infrastructure on public websites.
Public-website adoption of Amazon S3 usually points to a business with web, product and operations teams that need more than a brochure site. The buying centre tends to sit between platform engineering, marketing operations and security, with procurement joining where downloadable content, customer portals or media-heavy pages affect service delivery. In this London cohort, the better fit is usually mid-market to enterprise: B2B software vendors, travel operators, fintechs and digitally delivered services where asset availability, caching decisions and access controls matter to acquisition and support teams. Small sites can run the same stack, but the commercial signal is clearest when storage sits alongside measured website performance and recurring digital workflows.
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London has 1,236 companies running Amazon S3 on public websites, making adoption visible beyond a small infrastructure specialist base. Reported employment across this cohort totals 3,133 people, while the median headcount is 5; public-web adoption is therefore not confined to larger IT estates. The sector mix is tilted towards digital operating models: SaaS accounts for 26% of the cohort, startups for 12.1%, AI and machine learning for 10%, travel and hospitality for 8.1%, and fintech for 7.8%. That spread fits object storage being used for customer-facing assets as well as web application plumbing.
Procurement questions tend to centre on where website content is stored, who can alter access permissions, and how retention policies are evidenced. London businesses running Amazon S3 for public assets still need to separate harmless static files from logs, uploads or downloadable material that may carry personal data. GDPR and ICO guidance make controller and processor roles, access logging, encryption settings and deletion routines part of the operating conversation rather than a back-office detail. For regulated buyers, the issue is less the object store itself than the surrounding controls: identity management, change approval, incident response and contractual assurances from the hosting supply chain.
Adoption appears likely to become more governed rather than more conspicuous. Many companies already treat object storage as ordinary web infrastructure, so change tends to arrive through policy, cost control and consolidation of adjacent hosting tools. Mid-market users may keep the stack where migration risk outweighs savings, while larger digital businesses are more likely to formalise ownership across security, engineering and procurement. Smaller adopters may feel pressure from bundled website platforms that hide storage decisions from non-technical teams. That leaves use of this stack as a continuing signal of hands-on web operations, particularly where performance, auditability and content workflows sit close together.
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 Amazon S3 rises with company size across the trading companies in this cohort. 0.2% of the 532,485 companies with under 10 employees run Amazon S3 (844 detected). 2.1% of the 15,364 companies with 10–50 employees run Amazon S3 (326 detected). 2.8% of the 1,763 companies with over 50 employees run Amazon S3 (50 detected). That is a 2.6% gap between the over 50 employees and under 10 employees bands.
1,236
Active firms
2026
97
Above £5M turnover
Trading firms
5
Median headcount
Filed accounts
2,856
Verified directors
Across this cohort
Top companies using Amazon S3 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.
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Computed from 5 filingsDevelops cloud software for supply chain management that tracks shipments, integrates carrier data, stores documents, and provides alerts, maps, and AI-generated reports. The platform enables teams…
Serves B2B supply chain and logistics teams at importers, shippers and freight forwarders managing purchase orders, containers, carrier relationships, and customer shipment updates.
Financial Health
StrongStrong · Hiring · 27% CAGR over 4y
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Computed from 3 filingsProvides an open banking platform and APIs that connect businesses to European banks, enabling access to financial account data, payment initiation, and data enrichment. Supports account‑to‑account…
Sells B2B to banks, lenders, payment providers, fintechs and enterprise merchants across Europe, including product, payments and developer teams using open-banking infrastructure.
Financial Health
StrongStrong
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Computed from 3 filingsProvides workplace auto‑enrolment pension schemes for employers and employees, including pension accounts, contribution management, transfers from existing pensions, and investment options, delivered…
Serves UK businesses with workplace pension needs, especially payroll, HR and people operations teams, alongside individual savers and advisers managing pension arrangements.
Financial Health
StrongStrong
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Computed from 4 filingsPublishes and distributes audiobooks and digital titles, and develops library lending technology. Operates the BorrowBox app, enabling public and school libraries to lend eAudiobooks and eBooks, and…
Serves audiobook consumers worldwide, public and school libraries, and library users via digital borrowing channels; also works with publishers and distributes through major booksellers and online…
Financial Health
StrongStrong · Growing, Hiring · 6% CAGR over 3y
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Computed from 3 filingsDevelops cloud-based human resources information system (HRIS) software with AI features for managing employee data, onboarding and offboarding, performance reviews, absence tracking, workflow…
Serves growing and global businesses, targeting HR and People Operations leaders plus finance, planning and IT teams responsible for employees across the organisation.
Financial Health
StrongStrong · Hiring · 22% CAGR over 2y
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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 cross‑border payment infrastructure for businesses, including multi‑currency accounts, global payment collection and payouts, foreign exchange services, card issuing, and APIs to integrate…
Serves B2B customers with cross-border payment needs, including fintechs, marketplace and logistics platforms, international trade firms, maritime service providers, corporate treasury teams,…
Financial Health
StrongStrong · 145% CAGR over 2y
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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
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Computed from 5 filingsProvides a cloud‑native SaaS platform for data protection and cyber recovery. Offers backup, ransomware recovery, data governance, eDiscovery and compliance tools for enterprise workloads, public…
Serves enterprise IT, security and compliance teams that manage cloud, SaaS, endpoint and hybrid infrastructure, plus managed service providers and channel partners delivering data protection…
Financial Health
StableStable · Hiring · 7% CAGR over 4y
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Computed from 5 filingsProvides software platform for construction project management including BIM model viewing, document and design management, tendering, on‑site quality and safety workflows, and facility management,…
Serves construction managers, contractors, project owners and facility managers working on building and infrastructure projects, including teams responsible for BIM, site delivery, handover and…
Financial Health
StrongStrong · Hiring · 50% CAGR over 4y
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Computed from 5 filingsDevelops and provides a data integration and analytics platform that connects business systems, unifies data and delivers real-time insights. Offers connectors, integration hubs, data repositories,…
Serves enterprises and mid-market organisations in retail, FMCG/CPG, entertainment/gaming, charity/non-profit and travel, targeting marketing, IT, finance, digital operations, supply chain and…
Financial Health
HealthyHealthy · Hiring · 69% CAGR over 4y
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Computed from 2 filingsDevelops software for managing electric vehicle charging and connected home energy devices. Provides an energy operating system with AI-driven control, data aggregation and white‑label mobile apps…
Serves energy retailers, home electrification businesses and companies in the EV value chain, while also targeting EV drivers and home energy users through its consumer app.
Financial Health
WeakWeak · Hiring · 172% CAGR over 1y
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Computed from 4 filingsDevelops workplace management software that enables organisations to book desks, meeting rooms and other resources, manage visitors, monitor occupancy through sensors, and analyse workspace usage…
Serves public-sector and enterprise buyers, including central and local government, NHS, universities, legal, utilities, insurance, retail, manufacturing, construction, housing associations and…
Financial Health
HealthyHealthy · Hiring · 31% CAGR over 3y
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Computed from 5 filingsProvides cloud-based communications platform services enabling businesses to send and manage messaging via SMS, WhatsApp, RCS, and email. Offers APIs and tools for notifications, marketing campaigns,…
Serves enterprise and mid-market organisations with large customer audiences, including retailers, logistics firms, hospitality and leisure operators, technology companies, financial services…
Financial Health
StrongStrong · Hiring · 30% CAGR over 5y
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Computed from 5 filingsDevelops data and software platforms for brand licensing and retail. Provides product lifecycle management, master data management, digital product catalogues, and royalty reporting tools that…
Serves B2B customers in the brand licensing and retail sectors, especially consumer brands and teams managing product, licensing and royalty programmes, plus partners across the licensing value chain…
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StrongStrong
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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
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Computed from 5 filingsProvides web data extraction tools including residential, mobile and datacenter proxy networks, scraping APIs, and managed data pipelines. Delivers structured datasets such as search engine results,…
Sells to businesses that need large-scale public web data, including market research, ecommerce, recruitment and cybersecurity teams, plus AI/LLM developers needing training, evaluation and RAG…
Financial Health
StrongStrong · Growing, Hiring · 26% CAGR over 4y
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Computed from 5 filingsDevelops digital experience software for marketing and product teams, including content management, A/B testing, personalization, experimentation analytics, and ecommerce tools. Platform uses AI to…
Sells to B2B marketing, digital experience, ecommerce and product teams, including marketers, developers, engineers and digital leaders seeking platforms to manage and optimise customer-facing…
Financial Health
StableStable · Hiring · 38% CAGR over 6y
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Computed from 5 filingsOperates an online wholesale marketplace connecting independent retailers with brands and suppliers. The platform enables businesses to browse and order wholesale products including homeware, beauty…
Serves independent retailers buying wholesale stock for resale, and independent consumer goods brands seeking retailer customers, across homeware, gifts, fashion, beauty, food, pets and kids in the…
Financial Health
StrongStrong · Growing, Hiring · 92% CAGR over 4y
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Computed from 3 filingsProvides investment management services and investment products, including funds, bonds and estate planning solutions. Invests in sectors such as renewable energy, infrastructure, private equity,…
Serves individual investors, financial advisers and institutional investors, alongside businesses seeking funding in sectors such as renewable energy, infrastructure, property and healthcare.
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StrongStrong
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Computed from 3 filingsOperates a hotel group providing short‑stay accommodation through several in‑house brands, offering private rooms and suites as well as budget rooms with shared bathrooms, with 24‑hour reception,…
Serves leisure and business travellers seeking short-stay accommodation in central London, including budget-conscious guests and visitors using King’s Cross St Pancras or the Eurostar terminal.
Financial Health
HealthyHealthy · -4% CAGR over 2y
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Computed from 3 filingsProvides compliant video recording, management and review services for clinical trials, including capture of patient functional assessments and vCOA evidence, patient de‑identification, remote site…
Serves pharmaceutical, biotech and clinical research organisations running clinical trials, as well as clinical sites involved in patient assessments, training, peer review and regulatory submissions.
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StrongStrong · Growing, Hiring · 6% CAGR over 2y
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Computed from 3 filingsProvides protection and warranty-style insurance plans for consumer electronics and household appliances, including smartphones. Partners with retailers and mobile operators to sell plans and manages…
Serves consumers across Europe with smartphones, electronics and appliances, and partners with large retailers and mobile operators that offer device and product cover to their customers.
Financial Health
StrongStrong · Hiring · 25% CAGR over 2y
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Computed from 4 filingsProvides global employment and HR management services, including employer of record, international payroll, contractor management, and onboarding tools. Enables companies to hire, manage, and pay…
Serves HR teams, executives and operations leaders at companies hiring employees or contractors across multiple countries, especially growing businesses expanding into new markets without local…
Financial Health
StrongStrong · Hiring · 8% CAGR over 3y
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Computed from 4 filingsProvides a digital adoption platform that overlays enterprise software applications to analyse usage, guide users with in‑app instructions, automate workflows, and optimise licences and data across…
Serves enterprise organisations and public sector bodies, targeting IT, sales, HR and customer care teams that manage employee workflows across major business applications such as SAP, Salesforce,…
Financial Health
StrongStrong · Hiring · 28% CAGR over 5y
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Computed from 5 filingsOperates an online property platform for student accommodation. Lists houses, flats and studios from landlords and letting agents, enabling students to search, shortlist and enquire about rentals,…
Serves students searching for rental accommodation across the UK, and B2B landlords, letting agents and property managers listing and managing student properties.
Financial Health
HealthyHealthy · -61% CAGR over 4y
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Computed from 5 filingsProvides digital asset management software that enables organisations to store, manage, and share brand assets. Platform includes digital and print templates, approval workflows, logo libraries,…
Serves marketing and brand teams at enterprise and brand-centric organisations, including finance firms, higher education institutions, franchises and global consumer brands.
Financial Health
HealthyHealthy · 1% CAGR over 4y
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Computed from 4 filingsProvides a SaaS audience measurement platform for advertisers, agencies and publishers to analyse advertising campaign performance across channels including web, social media, online video, connected…
Serves advertisers, media agencies and publishers that run or sell multichannel ad campaigns across web, social, video, CTV and TV, especially teams needing independent audience measurement and…
Financial Health
StrongStrong · Hiring · 36% CAGR over 3y
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Computed from 4 filingsProvides cloud-based software for managing company equity and employee share plans, including cap table management, automated financial reporting, compliance across jurisdictions, participant…
Serves private and public companies managing employee equity and share plans, including startups scaling toward IPO and listed businesses with finance, legal, HR, and reward teams responsible for…
Financial Health
StrongStrong · Growing · 0% CAGR over 3y
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Computed from 3 filingsProvides digital asset infrastructure software for financial institutions and fintech companies, including custody and wallet technology, treasury management, payment and settlement tools,…
Serves B2B customers in digital assets, including fintechs, crypto exchanges, trading firms, payments companies, banks, Web3 businesses and startups, from high-volume retail platforms to…
Financial Health
StrongStrong · Hiring · 19% CAGR over 2y
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Computed from 3 filingsDevelops and operates a mobile-first workplace operations platform used to conduct inspections, audits and checklists, manage assets and workflows, deliver training, and monitor safety, quality and…
Serves B2B organisations with frontline operations, including manufacturing, construction, hospitality, retail, transport and logistics, healthcare, facilities management, and energy and mining,…
Financial Health
HealthyHealthy · -7% CAGR over 2y
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Computed from 5 filingsDevelops digital products and software for businesses, providing product strategy, design and engineering services. Builds web and mobile applications, prototypes and data platforms, and supplies…
Sells to B2B product, technology and digital leaders at established organisations needing to build digital products quickly, including teams in retail, travel, media, financial services, higher…
Financial Health
StrongStrong · Growing, Hiring · 50% CAGR over 4y
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Computed from 5 filingsDevelops cloud-based practice management and electronic health record software for private healthcare providers. The platform includes patient records, telehealth, appointment scheduling, billing and…
Serves private healthcare providers, from solo practitioners and clinics to corporate, occupational health and enterprise organisations, across primary care, secondary care, mental health, allied…
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StrongStrong · Growing, Hiring · 36% CAGR over 4y
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Computed from 4 filingsProvides online payment and financial services for businesses, freelancers, and marketplaces, including cross-border payment processing, multi‑currency accounts, mass payouts, invoicing, and tools to…
Serves freelancers, eCommerce sellers, digital marketplaces, agencies, startups, exporters and global businesses that need to pay or get paid across borders, including platforms managing mass payouts…
Financial Health
StrongStrong · Growing, Hiring · 37% CAGR over 3y
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Computed from 5 filingsDevelops software platforms for the specialty and commercial insurance market, providing digital tools for underwriting and broker placement. The technology supports insurers and brokers with…
Serves B2B specialty and commercial (re)insurance markets, targeting brokers, carriers and insurers involved in placement, underwriting and specialty risk transfer.
Financial Health
HealthyHealthy · Hiring · 13% CAGR over 4y
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Computed from 5 filingsDevelops cloud‑based software that connects financial institutions through a shared data network to manage post‑trade operations. Provides tools for data collaboration, workflow management, and…
Serves financial markets firms, including buy-side and sell-side institutions, asset managers, asset servicers, banks, OMS platforms and operations teams involved in trade lifecycle, settlement,…
Financial Health
StrongStrong · Growing, Hiring · 25% CAGR over 4y
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Computed from 5 filingsProvides software infrastructure and platform technology for wealth management firms, enabling financial advisers and discretionary managers to operate investment platforms, manage client portfolios,…
Serves B2B wealth management firms, private banks, platform operators, consolidators, financial advisers and discretionary fund managers that need institutional-grade infrastructure for client…
Financial Health
StrongStrong · Hiring · 6% CAGR over 4y
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Computed from 4 filingsProvides software and services for managing international workforces, including global payroll processing, employer‑of‑record employment, contractor onboarding and payments, HR information…
Serves startups, mid-market companies and enterprises with distributed or international workforces, targeting HR, payroll, recruiting and operations teams hiring employees and contractors across…
Financial Health
StrongStrong · Hiring · 38% CAGR over 3y
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Computed from 3 filingsDevelops governance, risk and compliance (GRC) software platform that automates risk management, compliance tracking, internal audit, incident management, data privacy and regulatory reporting.…
Serves enterprise and complex businesses with governance, risk, compliance, internal audit, information security, data privacy and regulatory reporting teams, including organisations managing…
Financial Health
StrongStrong · Hiring · 52% CAGR over 2y
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Computed from 4 filingsDevelops cloud-based translation and localization management software that helps organizations manage multilingual content. The platform provides AI and machine translation, workflow automation, and…
Sells to enterprises, language service providers, nonprofits, and freelancers managing multilingual content, with buyers including localization managers, developers, marketers, product managers, and…
Financial Health
StrongStrong · Hiring · 157% CAGR over 3y
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Computed from 4 filingsDevelops and operates an online platform for creating interactive forms, surveys, quizzes, and data collection tools. Provides templates, analytics, integrations, and automation features to gather…
Serves B2B and B2C organizations, including GTM teams and larger enterprises, with buyers in marketing, product/UX research, HR, operations, talent, customer success and education.
Financial Health
StrongStrong · Growing, Hiring · 56% CAGR over 3y
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Computed from 2 filingsDistributes British films for theatrical release and promotion. Manages marketing, trailers and ticket links for upcoming and current releases, and provides information on British film and television…
Targets cinema-going consumers and film fans interested in British theatrical releases, with a consumer-facing site promoting current and upcoming films.
Financial Health
HealthyHealthy · Hiring · 100% CAGR over 1y
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Computed from 4 filingsDevelops software and provides technology, business operations and marketing services for companies in the online gaming industry. Supports B2B clients with platform development, operational support…
Serves B2B clients in the global online gaming sector, selling to gaming companies that need technology, business operations and marketing support.
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HealthyHealthy · Hiring · 100% CAGR over 3y
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Computed from 5 filingsOperates restaurants and delicatessens and sells prepared foods, bakery items, pantry ingredients, hampers and gifts through physical locations and an online shop. Publishes recipes and offers…
Sells directly to consumers seeking premium food, dining and gifting, including restaurant guests, deli shoppers, home cooks and buyers of hampers, bakery items, books and vouchers, with an emphasis…
Financial Health
HealthyHealthy · -56% CAGR over 5y
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Computed from 4 filingsProvides a customer data platform that collects, unifies and processes customer data from multiple digital sources, enabling businesses to build customer profiles, analyse behaviour, and activate…
Serves B2C multi-channel consumer brands, including ecommerce, media, fintech and subscription businesses, targeting marketing, product, CRM and data teams managing large-scale customer engagement.
Financial Health
StrongStrong · Hiring · 41% CAGR over 3y
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Computed from 2 filingsSupplies office products and workplace consumables via an online store, and provides facilities management services including furniture installation, managed print, document archiving and shredding,…
Sells to UK businesses needing workplace supplies and facilities services, including office managers, procurement teams and operations teams buying office products, furniture, print, archiving,…
Financial Health
HealthyHealthy · 4% CAGR over 1y
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Computed from 5 filingsProvides online professional learning platforms delivering expert‑led video courses on finance, sustainability, AI and data. Offers subscription and white‑label training platforms used by…
Serves enterprise and large business clients seeking workforce learning in AI, data, finance and sustainability, including teams responsible for employee, customer, supplier or public stakeholder…
Financial Health
StrongStrong · Growing, Hiring · 32% CAGR over 4y
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Computed from 2 filingsDevelops an AI revenue orchestration platform that analyses customer interactions and sales conversations to generate structured go‑to‑market data, automate CRM updates, capture notes, provide sales…
Serves B2B go-to-market teams, especially CROs, RevOps, sales, SDR/BDR, customer success, enablement, marketing and product leaders at companies managing CRM-driven revenue operations.
Financial Health
StrongStrong · Growing, Hiring · 150% CAGR over 1y
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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
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Computed from 5 filingsOperates theatre venues and produces and hosts live stage productions. Manages performance spaces including Troubadour Canary Wharf Theatre and Troubadour Wembley Park Theatre, presenting musicals,…
Serves theatre audiences and cultural eventgoers in London, alongside producers, promoters and organisations seeking large-scale theatre venues or studio spaces in Canary Wharf, Wembley Park and…
Financial Health
HealthyHealthy · Hiring · 10% CAGR over 4y
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Key facts
About 7% of the trading cohort reports turnover above £5M (97 of 1,236 firms) — the rest sits below that revenue band.
11% of the cohort was incorporated since 2022 (148 firms), so a sizeable share is in its first few filing cycles.
Half of the London object-storage cohort also shows a content-delivery or network-security layer at 50.8% (628).
Tag-management and analytics tooling appear alongside object storage on 49.4% (610) and 45.2% (559) of sites respectively.
A same-provider content-delivery layer is visible at 40.0% (495), suggesting a sizeable group has kept storage and distribution close together in the cloud stack.
SaaS is the largest tagged sector at 26.0% (321), ahead of Startup at 12.1% (149) and AI & Machine Learning at 10.0% (123).
Financial-health screening puts 18.3% (226) in the weak band and 9.8% (121) in the distressed band, so supplier risk work is not just an enterprise-account issue.
What else do Amazon S3 users run?
Share of the 1,236 Amazon S3-running UK companies where each technology was also detected. As of June 2026.
Who runs Amazon S3 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
£575.8K
Median UK turnover
7.8%
Above £5M turnover
148
Incorporated since 2022
Verified directors — included in the file
Director names and roles for these 2,494 companies, alongside financials and websites, in one Excel + CSV file.
How Amazon S3 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.
Amazon S3 is a trademark of its respective owner. Firmbase is not affiliated with, sponsored by, or endorsed by the trademark owner.
Amazon S3 elsewhere
Frequently asked questions
How many companies in London use Amazon S3?
How is Amazon S3 usage detected?
What kinds of companies use Amazon S3 in London?
What do Amazon S3 users in London also run?
How fresh is this data?
Can I get contact details for these companies?
Buy all 2,494 companies as a spreadsheet.
One Excel/CSV file with company details, websites and key data — yours to download and use.