Companies Using hCaptcha in London: 312 Active Firms (2026)
London companies running bot-defence challenge technology use website verification to reduce automated abuse across digital services.
Adoption tends to sit with product, security, growth and ecommerce operations teams rather than only central IT. hCaptcha users usually have public acquisition or transaction paths where forms, account creation, basket flows or gated content attract unwanted automation. Running the stack signals a business with enough web traffic, fraud exposure and internal ownership to tune verification rather than leave abuse controls entirely to hosting defaults. The cohort therefore leans towards revenue-generating SMEs and mid-market operators with digital customer journeys, while enterprise users tend to treat challenge placement as part of conversion, privacy and risk trade-offs.
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London has 312 active companies running hCaptcha on public websites, making the adoption picture a small but identifiable slice of the capital’s digital-business base. Reported employment totals 1,745 people, so the footprint is dispersed rather than dominated by a handful of very large employers. The mix points towards operators with practical exposure to account abuse, form spam or checkout risk: online retail, wholesale distribution, property platforms and SaaS appear more visible than offline sectors. Many adopters look like lean commercial teams, with larger revenue bands present but not setting the tone for the whole cohort.
Challenge-verification tools sit close to personal-data handling because they evaluate browser, device and behavioural signals before allowing a user to continue. London organisations running hCaptcha therefore need clear vendor-contract terms, retention settings and privacy notices that explain how verification works across account, payment and enquiry flows. Procurement is often shared between security, engineering and marketing operations, since the control can affect conversion rates as well as abuse prevention. The market structure also matters: many users pair challenge checks with content management, analytics, hosting and checkout tooling, which makes change control more complicated than a simple website plug-in swap.
Adoption appears likely to remain tied to risk-sensitive customer journeys rather than brand preference alone. Smaller London firms tend to add challenge verification after spam or credential-stuffing pressure becomes visible, while larger teams are more likely to test placement, accessibility and drop-off as part of a wider fraud-control stack. Migration pressure may come from privacy reviews, changes in browser tracking limits and supplier consolidation across security and website infrastructure. The category does not look like a universal default; it looks more like a selective control used where abuse costs are felt directly.
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 hCaptcha rises with company size across the trading companies in this cohort. 0% of the 532,485 companies with under 10 employees run hCaptcha (218 detected). 0.6% of the 15,364 companies with 10–50 employees run hCaptcha (85 detected). 0.6% of the 1,763 companies with over 50 employees run hCaptcha (10 detected). That is a 0.6% gap between the over 50 employees and under 10 employees bands.
312
Active firms
2026
26
Above £5M turnover
Trading firms
6
Median headcount
Filed accounts
611
Verified directors
Across this cohort
Top companies using hCaptcha 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.
Provides payment processing and merchant services including card acquiring, digital wallets, prepaid and online cash payment methods, pay-by-bank and crypto payments. Also offers consumer payment…
Serves a mix of B2B and B2C customers: SMBs, large enterprises, platforms, ISVs and referral partners, plus consumers. Key merchant sectors include iGaming, retail, travel and airlines, video gaming,…
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Provides payment processing and digital payment services for businesses and consumers, including card acquiring, online payment gateways, digital wallets (Skrill, Neteller), prepaid PaysafeCard,…
Serves large enterprises, SMBs, software platforms, referral partners and consumers, with business customers in charities, financial services, iGaming, retail, travel and airlines, and video gaming.
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Financial sub-scores
Computed from 2 filingsProvides online payment processing and financial infrastructure for businesses. Offers APIs and tools to accept in‑person and online payments, manage subscriptions and billing, issue cards, move…
Serves businesses of all sizes, from startups and online platforms to large enterprises, retailers, marketplaces and subscription businesses needing global commerce and money-movement infrastructure.
Financial Health
HealthyHealthy · Hiring · 24% CAGR over 1y
Location
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Computed from 2 filingsProvides cloud-based work management and collaboration software. Platform includes project and task management, CRM, service management and development tools, with automation and AI features for…
Serves businesses from SMBs to enterprises, including Fortune 500 organisations, across teams such as marketing, sales, operations, product, IT, HR and PMO, with stated industry focus on retail,…
Financial Health
HealthyHealthy · Hiring · 29% CAGR over 1y
Location
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Computed from 5 filingsProvides a technology platform for employers to manage worker financial benefits, including earned wage access, insurance products and reward programmes. Integrates with workforce shift data and…
Sells to businesses managing flexible, shift-based or on-demand workforces, with workers as end users. Targets employers of contractors, gig workers and hourly staff.
Financial Health
StrongStrong · Hiring · 82% CAGR over 5y
Location
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Computed from 5 filingsProvides biometric identity verification and automated KYC and AML screening software. Uses facial recognition, liveness detection, OCR and document verification to authenticate identity documents,…
Serves businesses with regulated or fraud-prone onboarding, including financial services, gaming, healthcare, legal and accounting firms, marketplaces, real estate, recruitment, retail/e-commerce,…
Financial Health
StrongStrong · Hiring · 28% CAGR over 4y
Location
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Computed from 5 filingsProvides international payment services and electronic money accounts for businesses and institutions. Offers multi‑currency accounts, virtual IBANs, cross‑border payments and collections, foreign…
Serves B2B organisations with cross-border financial needs, from scaling SMEs and corporate clients to private market firms and institutions managing international entities, currencies and capital…
Financial Health
StableStable · -58% CAGR over 5y
Location
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Computed from 5 filingsDesigns and sells luxury streetwear and fashion collections, including ready‑to‑wear clothing, knitwear, denim, outerwear, hats, bags, shoes and accessories. Also develops seasonal collections and…
Sells B2C to fashion consumers buying luxury streetwear, ready-to-wear and accessories online, with shopping options for Europe, the UK, the US and Japan.
Financial Health
StableStable · Hiring · 29% CAGR over 4y
Location
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Computed from 2 filingsProvides technology and agency services for mergers and acquisitions and loan transactions, including virtual data rooms, escrow and payment administration, shareholder representation, digital deal…
Serves businesses and professional advisers involved in M&A and loan transactions, including deal parties, shareholders, lenders, and legal and financial practitioners.
Financial Health
StrongStrong · Hiring · 117% CAGR over 1y
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Computed from 5 filingsDevelops software and data solutions for the automotive and insurance sectors, including tools for vehicle damage assessment, repair cost estimation, and management of claims, maintenance, and fleet…
Serves B2B automotive and insurance organisations: insurers, claims assessors, repair workshops, dealerships, fleet managers, rental/leasing firms and mechanical warranty providers across Europe.
Financial Health
StrongStrong · Hiring · 32% CAGR over 4y
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Computed from 5 filingsDesigns and sells men’s clothing and accessories, including shirts, overshirts, knitwear, jackets, trousers, denim and footwear. Products are sold through an online store as well as wholesale and…
Serves male consumers shopping for contemporary clothing and accessories online or in retail, with worldwide shipping, and also sells wholesale to fashion retailers and stockists.
Financial Health
HealthyHealthy · Hiring · 49% CAGR over 5y
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Computed from 5 filingsProvides digital platforms and managed services for capital markets deal marketing, including online investor roadshows, moderated conference calls and webinars, secure distribution of pre‑IPO…
Serves B2B capital markets participants, including global and regional investment banks, corporate issuers and institutional investors involved in transaction marketing and deal execution.
Financial Health
StableStable · -68% CAGR over 4y
Location
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Computed from 3 filingsDesigns and sells made‑to‑order men’s clothing, including suits, overcoats, jackets, trousers, shirts, and accessories. Orders are placed online or in store and produced after purchase, with…
Sells to fashion-conscious consumers, primarily men, seeking smart casual wardrobe pieces and occasionwear online or through in-store appointments.
Financial Health
HealthyHealthy · Hiring · 22% CAGR over 2y
Location
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Develops financial and business software including tax preparation, accounting, credit monitoring and marketing automation tools. Products such as TurboTax, QuickBooks, Credit Karma and Mailchimp…
Targets a mixed B2C and B2B market: individuals managing tax and personal finances, small business owners, mid-market companies, accountants, educators and enterprise teams.
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Computed from 5 filingsOperates e‑commerce stores selling official merchandise for music and entertainment artists, including clothing, accessories and collectibles, and provides merchandise production, distribution and…
Serves music and entertainment artists, labels and rights holders, alongside consumers who are fans of featured artists through a UK-focused online store.
Financial Health
StrongStrong
Location
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Computed from 5 filingsProvides merchant payment processing services, including card terminals for in‑person transactions, virtual terminals for telephone payments, and online payment integration. Also offers payment…
Serves UK SMEs and small business owners in retail, hospitality and service sectors, including merchants taking payments face to face, online or by phone.
Financial Health
StrongStrong · Growing, Hiring · 16% CAGR over 4y
Location
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Computed from 3 filingsProvides market research services including online panel and panel research, quantitative and qualitative studies, CATI and CAWI surveys, and healthcare market research, collecting and analysing…
Serves B2B clients needing market and consumer insights, including product launch and market expansion teams, healthcare organizations, and businesses seeking consumer, business, or healthcare…
Financial Health
StrongStrong · Growing, Hiring · 73% CAGR over 2y
Location
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Computed from 5 filingsProvides software and legal advisory services for international immigration, business travel and workforce mobility. Platform offers compliance guidance, visa and work permit management, relocation…
Serves businesses with cross-border workforces, especially HR, global mobility and legal/compliance teams managing employee travel, relocations, immigration and market entry across multiple countries.
Financial Health
HealthyHealthy · Hiring · 85% CAGR over 4y
Location
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Computed from 5 filingsProvides wealth and asset management services for private and institutional clients, including portfolio management, investment advisory, wealth planning, family office services, and investment…
Serves private clients, families and family offices, institutional investors and external asset managers seeking wealth and asset management support across EMEA, the UK and Asia.
Financial Health
StableStable · 0% CAGR over 0y
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Computed from 5 filingsDevelops and operates social media management software that enables users to plan, schedule, and publish posts across multiple platforms, analyze performance metrics, manage audience engagement,…
Serves B2B and B2C users managing social media, especially creators, small businesses, agencies, nonprofits, and higher education teams seeking tools for publishing, analytics, community management,…
Financial Health
HealthyHealthy · -18% CAGR over 4y
Location
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Computed from 5 filingsDesigns and sells branded clothing including hoodies, T‑shirts, knitwear, polo shirts, outerwear, bottoms, kidswear and accessories through an online store, offering themed collections and…
Serves consumers buying premium streetwear and casual fashion, including adults and children, through an online retail store. Targets shoppers interested in hoodies, tees, outerwear, knitwear and…
Financial Health
StrongStrong
Location
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Computed from 3 filingsOperates the Hidden Disabilities Sunflower scheme, providing lanyards, badges and related materials that allow individuals to discreetly signal hidden disabilities, and offering membership, guidance…
Serves individuals with hidden disabilities and organisations worldwide, including retail, financial services, education, healthcare, sport and leisure businesses seeking to support disabled…
Financial Health
HealthyHealthy · Hiring · 13% CAGR over 2y
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Computed from 5 filingsProvides residential block and estate management services for leaseholder‑controlled and freeholder‑owned buildings, including service charge administration, maintenance coordination, insurance…
Serves leaseholder-led resident management and right-to-manage companies for residential blocks, plus selected freeholders, across London and the South East.
Financial Health
HealthyHealthy · Hiring · 33% CAGR over 4y
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Computed from 5 filingsDevelops cloud-based tutor management software for tutoring companies. Platform provides scheduling, client and tutor CRM, lesson management, invoicing, payments, payroll automation, reporting, and…
Sells to B2B tutoring providers, including entrepreneurs, small online tutoring businesses, established tutoring agencies, tuition centres, scaling companies and enterprise tutoring organisations.
Financial Health
StrongStrong · Hiring · 16% CAGR over 4y
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Computed from 5 filingsDevelops software for corporate legal departments to source and manage external law firms. The platform supports matter intake, proposal requests, pricing comparison, performance analytics, and legal…
Sells to in-house legal teams and legal leaders at large enterprises, helping corporate law departments manage outside counsel, law firm selection, and legal spend. Also serves law firms…
Financial Health
StrongStrong · Hiring · 40% CAGR over 4y
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Operates a professional basketball club competing in Super League Basketball and the EuroCup. Organises team fixtures and events, sells match tickets and merchandise, publishes club news, and manages…
Targets basketball fans, students, families and community supporters attending Super League Basketball and EuroCup games, plus merchandise buyers and sponsors/partners seeking association with a…
Financial Health
N/AN/A
Location
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Computed from 4 filingsOnline travel agency offering booking of flights, hotels, and package holidays. Provides travel services including airport transfers, car hire, holiday villas, visa assistance, travel insurance,…
Serves UK consumers planning leisure holidays, including families, couples, honeymooners, luxury, spa and golf travellers, plus businesses arranging corporate events, meetings, conferences and…
Financial Health
StableStable · Hiring · 14% CAGR over 3y
Location
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Computed from 5 filingsDesigns and sells solid gold jewellery including earrings, rings, necklaces and bracelets, with options for stackable, gemstone and diamond pieces. Operates an online store offering collections and…
Sells direct to consumers buying fine jewellery for everyday wear, gifting and personal styling, including shoppers interested in customisable earrings, necklaces, bracelets and rings.
Financial Health
HealthyHealthy · Hiring · 8% CAGR over 4y
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Provides credit ratings, financial research, and data for global capital markets. Offers analytics, risk assessment, compliance and entity verification tools, and market insights used by investors,…
Serves institutional investors, banks, asset managers, insurers, corporates and public-sector issuers in global capital markets, plus risk, compliance and treasury teams.
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Provides credit ratings, credit risk research and financial data for governments, corporations and securities. Also offers analytics, compliance and risk management tools used by investors, lenders…
Serves B2B and institutional customers in global capital markets, including investors, lenders, issuers, insurers, risk, compliance and finance teams, plus participants in private credit, sustainable…
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Computed from 2 filingsOperates an online retail store selling perfumes and fragrance products for men and women, including branded collections and themed editions such as floral, luxury and travel sizes, available for…
Sells to online consumers shopping for women’s, men’s and unisex fragrances, including buyers interested in creator-curated perfume ranges and gifts.
Financial Health
StrongStrong
Location
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Computed from 5 filingsOperates an online retail platform selling alcoholic beverages, including wine, champagne, gin, whisky, rum, and beer. Offers individual bottles, mixed cases, and gift options for purchase and home…
Serves adult consumers shopping online for wine, champagne, spirits, beer and related alcoholic drinks.
Financial Health
HealthyHealthy · Growing · 0% CAGR over 4y
Location
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Computed from 3 filingsRetailer of diamond jewellery including engagement rings, wedding bands, earrings, pendants and bracelets. Offers natural and lab‑grown diamonds, bespoke jewellery design, and tools to customise ring…
Serves UK consumers, especially couples and individuals shopping for engagement rings, wedding bands and diamond jewellery online or by appointment in Hatton Garden.
Financial Health
StrongStrong · 25% CAGR over 1y
Location
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Computed from 2 filingsProvides cloud-based working capital management software that helps businesses manage payables, receivables and inventory. Offers supply chain finance, dynamic discounting, virtual card payments and…
Serves large enterprises and their treasury, procurement and finance teams, plus their supplier networks, with a focus on industries including energy, retail, consumer goods, and aerospace and…
Financial Health
StrongStrong · Growing, Hiring · 13% CAGR over 1y
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Computed from 5 filingsProvides property search reports and conveyancing support services for legal professionals, including local authority, environmental, mining and drainage searches, compliance and…
Serves B2B legal practices, conveyancing solicitors and property professionals handling residential and commercial property transactions across England and Wales.
Financial Health
StrongStrong · Hiring · 5% CAGR over 4y
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Computed from 2 filingsOperates affiliate marketing websites focused on online gambling. Runs comparison and review platforms for bingo, slots and casino sites, publishing reviews and directing users to regulated gaming…
Serves online bingo, slots and casino operators seeking player acquisition, mainly in the UK regulated iGaming market; also targets consumers comparing online bingo, casino, sportsbook and crypto…
Financial Health
HealthyHealthy · Hiring · 17% CAGR over 1y
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Computed from 5 filingsOperates a private hire minicab service providing passenger transport, including airport transfers. Accepts bookings by phone, online and mobile app, and offers account services for regular or…
Serves consumers and business account customers in South East London, especially Lewisham, Bexleyheath, Eltham and Greenwich, including local passengers and airport travellers.
Financial Health
DistressedDistressed · -39% CAGR over 4y
Location
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Computed from 5 filingsOperates an online store selling kitchen knives, including Japanese and Western chef’s knives, traditional cooking knives, and custom blades. Offers knife engraving services and retail of related…
Sells direct to consumers, especially home cooks, chefs, knife enthusiasts and gift buyers seeking Japanese, Western and custom kitchen knives, including engraved blades. Serves retail customers…
Financial Health
StrongStrong · Growing, Hiring · 32% CAGR over 4y
Location
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Computed from 5 filingsDevelops an AI‑driven platform that enables managed service providers and security consultancies to deliver virtual CISO services. The software automates security posture assessments, risk…
Serves B2B cybersecurity service providers, including MSPs, MSSPs and vCISO consultancies, that deliver security, compliance and risk services to multiple client organisations.
Financial Health
StrongStrong · Growing, Hiring · 22% CAGR over 4y
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Computed from 5 filingsProvides private tutoring services for school and university students across subjects including GCSE, A‑level, IB and degree courses. Also offers support for academic writing, dissertations, and…
Serves students and parents seeking private academic support across GCSE, IGCSE, A-level, IB, university courses, dissertations, admissions tests and professional qualifications, including Oxbridge,…
Financial Health
StrongStrong · Growing, Hiring · 27% CAGR over 4y
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Computed from 5 filingsDevelops and provides event management software for planning and operating events, including guest list management, RSVPs, contact databases, seating plans, digital passes, guest communications,…
Serves B2B event professionals, luxury brands, cultural festivals, media and hospitality organisations, and enterprise teams running guest-focused events worldwide.
Financial Health
HealthyHealthy · Hiring · 11% CAGR over 4y
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Computed from 5 filingsDesigns and manufactures contemporary furniture in collaboration with external designers. Produces and sells products including sofas, tables, chairs, beds, desks, shelving, storage units, and…
Sells to consumers furnishing homes and outdoor spaces, plus trade professionals such as interior designers and specifiers. Serves UK online shoppers, with international ecommerce options indicated.
Financial Health
HealthyHealthy · Hiring · 10% CAGR over 4y
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Computed from 3 filingsSelects, matures and sells British and Irish farmhouse cheeses. Retail via online shop and physical stores, and supplies cheese for wholesale and export. Also offers cheese subscriptions, tasting…
Sells to individual cheese buyers via online orders, shop visits, subscriptions and gifts, and to trade customers including wholesalers, exporters, corporate gift buyers and international stockists.
Financial Health
StrongStrong · -4% CAGR over 2y
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Provides credit ratings, financial research and data analytics for global capital markets. Develops credit risk assessment, economic data and compliance tools used by investors, financial…
Serves B2B and institutional customers in global capital markets, including investors, lenders, issuers, insurers, compliance teams and risk professionals. Also targets organisations needing credit,…
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Provides investment management and fund administration services, offering mutual funds and investment strategies across multiple asset classes through affiliated asset managers, and distributing…
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Computed from 5 filingsProvides business support services including treasury management, fraud detection software and analytics, management consultancy, back‑office operations support, and advice on selecting and…
Serves businesses and enterprises, including e-commerce companies, seeking external support to improve operations, manage risk and run back-office functions, often through joint-venture arrangements.
Financial Health
StrongStrong
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Computed from 5 filingsRetailer of Cuban and New World cigars through a physical shop and online store. Sells cigars by brand and size, along with pipes, pipe tobacco, humidors, cutters, lighters, cigar cases, ashtrays,…
Sells to adult cigar and pipe tobacco consumers, including online buyers, gift shoppers and visitors to its London cigar shop, with UK delivery and worldwide ordering.
Financial Health
StrongStrong · Growing, Hiring · 3% CAGR over 4y
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Computed from 5 filingsSells 22‑carat gold jewellery through an online store, including bangles, earrings, nose studs, rings and other traditional Indian‑style pieces, with product listings, pricing and online purchasing.
Sells directly to consumers seeking 22-carat Indian gold jewellery, particularly buyers shopping for bangles, earrings, rings and wedding or gift jewellery linked to Bengali, Bangladeshi and Sylheti…
Financial Health
StrongStrong · Hiring · 32% CAGR over 4y
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Computed from 4 filingsProvides online accounting software and accountancy services for freelancers, contractors and small businesses, including bookkeeping tools, tax and self‑assessment filing, payroll support, financial…
Serves freelancers, contractors, sole traders, limited company directors and small businesses, including e-commerce businesses, across the UK.
Financial Health
HealthyHealthy · -9% CAGR over 2y
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Computed from 3 filingsDevelops web‑based training software for security screening, including X‑ray image analysis simulation for aviation and other high‑risk environments. Provides online courses and training systems used…
Serves B2B and public-sector security operators in high-risk environments, including aviation, major events, critical infrastructure, correctional facilities and maritime, targeting organisations…
Financial Health
HealthyHealthy · 0% CAGR over 2y
Location
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Key facts
About 8% of the trading cohort reports turnover above £5M (26 of 312 firms) — the rest sits below that revenue band.
11% of the cohort was incorporated since 2022 (37 firms), so a sizeable share is in its first few filing cycles.
Stack overlap is concentrated: 52.2% (163) also run a website security or delivery layer, and 46.8% (146) also run a content-management system.
Measurement tools are common across the cohort, with analytics at 39.7% (124) and tag management at 36.2% (113).
E-commerce is the largest vertical tag at 16.7% (52), followed by Wholesale & Distribution at 11.5% (36) and Real Estate & Property at 10.6% (33).
SaaS and Fashion & Retail also appear in the sector mix, at 9.9% (31) and 9.6% (30) respectively.
Financial-health scoring is mixed, with 13.1% (41) classed as weak and 12.2% (38) as distressed.
What else do hCaptcha users run?
Share of the 312 hCaptcha-running UK companies where each technology was also detected. As of June 2026.
Who runs hCaptcha 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
£488.7K
Median UK turnover
8.3%
Above £5M turnover
37
Incorporated since 2022
Verified directors — included in the file
Director names and roles for these 520 companies, alongside financials and websites, in one Excel + CSV file.
How hCaptcha 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.
hCaptcha is a trademark of its respective owner. Firmbase is not affiliated with, sponsored by, or endorsed by the trademark owner.
hCaptcha elsewhere
Frequently asked questions
How many companies in London use hCaptcha?
How is hCaptcha usage detected?
What kinds of companies use hCaptcha in London?
What do hCaptcha users in London also run?
How fresh is this data?
Can I get contact details for these companies?
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