B2B Companies Using Apollo.io in the UK: 357 Active Firms (2026)
UK B2B companies running sales-engagement technology sell goods or services to other organisations across regulated and unregulated markets.
For B2B suppliers, this sales-engagement stack sits between CRM, web analytics and the commercial website, helping teams identify accounts, enrich contacts, sequence outreach and measure response. Adoption usually points to a repeatable demand-generation motion rather than opportunistic referrals: sales, marketing and revenue-operations teams are trying to manage named accounts, consent and opt-out handling, and attribution across inbound and outbound channels. The buying centre tends to be commercial leadership or revenue operations, with implementation light enough for lean specialist teams but still carrying compliance and data-quality work.
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At 357 actively trading B2B companies, UK adoption is visible but selective. Within the sector's CRM stack ranking, the system sits fourth at 8.4%, against a comparison denominator of 4,258. The reported employment footprint totals 2,280 people. Registered addresses skew towards London at 32.2%, followed by the South East at 17.1%, the North West at 12.0%, the East of England at 7.8% and the West Midlands at 6.4%.
B2B outreach sits in a mixed regulatory position rather than a single licensing regime. The underlying activity may bring a firm into financial services, telecoms, data-processing or professional-services rules, while marketing workflows add their own constraints. ICO guidance treats PECR as relevant to direct marketing by calls, electronic mail and fax. Corporate-subscriber emails and texts do not need PECR consent, but senders must identify themselves and offer a valid opt-out route. UK GDPR still applies when business-contact data is personal data, and live calling requires screening against CTPS and TPS as well as respect for objections.
Adoption appears tied to pressure on outbound productivity and to tighter scrutiny of contact sourcing. The cohort tends to look commercially mature enough to care about attribution, CRM hygiene and named-account targeting, but not always large enough to maintain dedicated data-governance teams. Vendor bundling may pull some spend back into broader CRM suites, while specialist tools remain useful where sales teams need list building, sequencing and enrichment in the same workflow. Consolidation seems more likely than a clean shift to a uniform stack, because compliance preferences, sales motion and legacy systems differ by subsector.
Adoption by company size
Adoption of Apollo.io varies by company size across the trading UK B2B companies in this cohort. 0.3% of the 76,784 companies with under 10 employees run Apollo.io (195 detected). 0.4% of the 31,788 companies with 10–50 employees run Apollo.io (143 detected). 0.3% of the 3,773 companies with over 50 employees run Apollo.io (13 detected).
357
Active firms
2026
8.4%
Of detected CRM share
UK B2B
8
Median headcount
Filed accounts
834
Verified contacts
Across this cohort
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Key facts
About 7% of the trading cohort reports turnover above £5M (27 of 357 firms) — the rest sits below that revenue band.
9% of the cohort was incorporated since 2022 (34 firms), so a sizeable share is in its first few filing cycles.
B2B firms running the sales-engagement tool account for 8.4% (357) of the 4,258 companies with a detectable CRM system, behind three larger detected CRM systems at 50.2% (2,137), 18.3% (778) and 10.8% (459).
London accounts for 32.2% (115) of the cohort by registered ITL1 region, followed by the South East at 17.1% (61) and the North West at 12.0% (43).
Website stack overlap is common: 66.1% (236) also run a web analytics tag, 61.1% (218) use tag management and 57.1% (204) show a traffic-protection layer.
Sector tags skew towards software and services, with SaaS at 30.5% (109), IT Services & Managed Services at 19.3% (69), Marketing Agency at 16.8% (60) and AI & Machine Learning at 14.6% (52).
ICO guidance keeps B2B outreach inside PECR and UK GDPR: corporate email does not need PECR consent, but senders must identify themselves, provide a valid opt-out address and screen live calls against CTPS and TPS.
Lead generation market share among UK B2B
Share of the 4,258 UK B2B with a detectable system. As of June 2026.
What else do Apollo.io-running B2B run?
Share of the 357 Apollo.io-running UK companies where each technology was also detected. As of June 2026.
Where Apollo.io B2B are, and how healthy they look
By region
By registered-office region; companies without a regional match count toward Rest of UK.
By financial health
From filed accounts; firms with fewer than two filings show as insufficient history.
8
Median headcount
£678.2K
Median UK turnover
7.6%
Above £5M turnover
34
Incorporated since 2022
834 verified decision-maker contacts
across these 357 companies, with emails available in Firmbase. Filter by role, seniority and stack.
Top UK B2B using Apollo.io
Ranked by sales-readiness score: an AI model assesses what each company does, its sector and size, and scores its overall fit. Best-fit prospects appear first.
Financial sub-scores
Computed from 5 filingsProvides outsourced B2B sales development and marketing services for technology and enterprise organisations, including demand generation, account‑based marketing campaigns, pipeline development,…
Serves B2B technology scale-ups and enterprise organisations with complex go-to-market needs, targeting senior sales and marketing leaders pursuing high-value, hard-to-penetrate accounts.
Financial Health
StrongStrong · Hiring · 12% CAGR over 4y
Location
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Financial sub-scores
Computed from 3 filingsDevelops a market intelligence platform that scans the internet to identify companies and provide B2B data. Offers sales lead generation tools, CRM data enrichment and refresh services, contact and…
Serves B2B companies, particularly enterprise clients, board-level decision makers, and sales and marketing teams seeking market intelligence, contact data, and lead generation across global markets.
Financial Health
StrongStrong · Hiring · 6% CAGR over 2y
Location
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Financial sub-scores
Computed from 5 filingsProvides B2B lead generation and sales development services, including appointment setting, account‑based marketing, event and webinar marketing, and outsourced SDR teams. Uses multichannel outreach…
Serves B2B startups, SMBs and enterprises worldwide, especially software, SaaS, cloud, cybersecurity, AI, fintech, data centre, manufacturing/distribution and healthcare technology firms.
Financial Health
HealthyHealthy · -73% CAGR over 4y
Location
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Provides a data intelligence platform for market research and B2B company analysis. Aggregates global data on companies and decision‑makers, offering tools for company discovery, financial…
Serves B2B organizations including corporates, banks, insurers, governments, dealers, agencies, consultants and system integrators, especially marketing, sales, procurement and M&A teams seeking…
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Computed from 3 filingsDevelops sales enablement and customer onboarding software. Provides digital sales room workspaces where sales teams share content, proposals, quotes and action plans with buyers, track engagement…
Serves B2B revenue teams, including BDR/SDR teams, account executives, customer success, account management, CROs and partnerships managers involved in sales, onboarding, account management and…
Financial Health
StrongStrong · Growing, Hiring · 78% CAGR over 2y
Location
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Financial sub-scores
Computed from 5 filingsProvides B2B account-based marketing and lead generation services, including targeted lead acquisition, programmatic display advertising, intent‑data campaigns, event marketing support, and marketing…
Serves B2B marketing and sales teams seeking account-based growth, lead generation, intent data and pipeline support, typically for brands targeting specific business buyers.
Financial Health
StrongStrong · Growing, Hiring · 41% CAGR over 4y
Location
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Financial sub-scores
Computed from 5 filingsSupplies business and consumer marketing databases and email lists for direct marketing campaigns. Provides bulk email marketing, email campaign management, direct mail services, and data processing…
Sells to businesses, agencies and marketing teams needing B2B, consumer and international audience data for email and direct mail campaigns across the UK, Europe and worldwide.
Financial Health
HealthyHealthy · Growing · 0% CAGR over 4y
Location
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Computed from 3 filingsProvides outsourced telemarketing, lead generation and appointment setting services for businesses. Uses targeted prospect research and outbound calling to identify potential customers, engage…
Serves B2B companies with sales-led growth needs, particularly marketing managers, sales directors and leadership teams in sectors such as packaging, manufacturing, industrial products and lighting.
Financial Health
StrongStrong · Hiring · 18% CAGR over 2y
Location
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Computed from 5 filingsDevelops cloud-based customer relationship management (CRM) software for sales and go-to-market teams. Platform provides customizable data models, workflow automation, AI-assisted search and…
Sells to B2B companies’ go-to-market, revenue, sales and business operations teams, especially teams managing customer data, outreach, pipelines and reporting.
Financial Health
StrongStrong · Growing, Hiring · 23% CAGR over 4y
Location
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Financial sub-scores
Computed from 4 filingsProvides marketing and CRM consultancy services for B2B organisations, specialising in HubSpot implementation, onboarding and integration. Aligns marketing, sales and customer data, develops…
Serves B2B leadership teams in growing organisations using or adopting HubSpot, with sector focus on manufacturing, law and events, and buyers across sales, marketing, service and revenue operations.
Financial Health
StrongStrong · Growing · 0% CAGR over 3y
Location
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Computed from 5 filingsDevelops and operates a cloud-based platform for B2B organisations to create branded online communities and knowledge hubs. The software enables publishing resources, hosting discussions and events,…
Serves B2B brands, particularly revenue, retention and customer engagement teams, that need to educate and engage customers across the customer lifecycle. Targets companies with customer communities,…
Financial Health
WeakWeak · -12% CAGR over 4y
Location
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Computed from 5 filingsProvides integrated B2B marketing services including marketing strategy, digital marketing, branding and design, public relations, content marketing, and marketing technology consultancy. Develops…
Serves ambitious B2B organisations, particularly sustainable businesses, decarbonisation and sustainability firms, high-growth companies, and larger B2B enterprises.
Financial Health
StrongStrong · Growing, Hiring · 25% CAGR over 5y
Location
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Computed from 5 filingsProvides consultancy on growth system design for B2B organisations, helping align marketing, sales and operations. Services include revenue operations and go‑to‑market engineering, account‑based…
Serves B2B SaaS, technology and professional services firms, including scale-ups, enterprise organisations and businesses transitioning from founder-led sales, typically addressing marketing, sales…
Financial Health
StableStable · Hiring · 6% CAGR over 4y
Location
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Computed from 5 filingsProvides outsourced business process and marketing support services including B2B lead generation, data management and enrichment, market research, demand generation, appointment setting, and finance…
Serves B2B marketing, sales, data and finance leaders, CPA firms and enterprises across ICT, marketing and advertising, automotive, transportation, semiconductor and other sectors, with emphasis on…
Financial Health
StrongStrong · Growing, Hiring · 25% CAGR over 5y
Location
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Computed from 5 filingsProvides HubSpot consultancy and revenue operations services, including CRM implementation, system integration, automation, data architecture and user training. Helps organisations configure and…
Serves B2B organisations and nonprofits using HubSpot, especially software, professional services, recruitment, manufacturing, automotive and real estate teams seeking RevOps, CRM and data support.
Financial Health
StrongStrong · Growing, Hiring · 13% CAGR over 4y
Location
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Computed from 5 filingsProvides consulting and implementation services for customer relationship management (CRM) and customer experience systems. Designs, deploys and integrates platforms such as Salesforce, Zendesk,…
Sells to businesses seeking CRM, CX, AI and automation support, particularly sales, marketing and customer service teams. Targets organisations across sectors such as financial services, payroll and…
Financial Health
HealthyHealthy · -9% CAGR over 4y
Location
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Computed from 5 filingsProvides digital identity verification and compliance software for businesses. Offers KYC, KYB and AML screening, document and face verification, liveness checks, transaction monitoring, and fraud…
Serves B2B organisations with online customer onboarding and compliance needs, including banks, fintechs, crypto exchanges, forex platforms, gaming operators, gig-economy firms, marketplaces and…
Financial Health
StrongStrong
Location
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Computed from 5 filingsDevelops governance, risk and compliance (GRC) software for SAP environments, including tools for access risk analysis, identity and access management, continuous controls monitoring, and data…
Targets B2B organisations running SAP worldwide, particularly enterprise IT security, GRC, risk, compliance, internal audit and SAP licensing teams, plus audit firms working with SAP access risk and…
Financial Health
StrongStrong
Location
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Computed from 5 filingsProvides digital marketing services for B2B manufacturing companies, including brand development, website and content creation, growth marketing campaigns, and revenue operations consulting to…
Serves B2B manufacturing companies, particularly industrial firms with complex sales cycles, targeting leadership, sales and marketing teams seeking stronger pipeline, brand visibility and commercial…
Financial Health
StableStable · -15% CAGR over 4y
Location
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Computed from 5 filingsDevelops software for managing and automating changes in SAP enterprise systems, including transport and release management, analytics and integrations. Also provides consultancy, implementation,…
Sells to large enterprises running SAP, especially IT, SAP change, transformation and compliance teams managing complex global operations across finance, supply chain, utilities and customer…
Financial Health
StrongStrong · Hiring · 10% CAGR over 5y
Location
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Computed from 5 filingsProvides recruitment and resourcing services for technology and digital roles, connecting employers with candidates in areas such as software development, cloud infrastructure, data, project…
Serves tech professionals seeking IT, digital and project management roles, alongside employers, HR and hiring managers looking to hire permanent or contract technology talent across the UK.
Financial Health
StableStable · -72% CAGR over 4y
Location
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Computed from 5 filingsDevelops and supplies core insurance software platforms for insurers, brokers and managing general agents. Products support policy administration, claims management, billing, underwriting,…
Serves B2B insurance organisations, including Lloyd’s and London Market syndicates, carriers, MGAs, brokers, and global insurers needing core operational platforms and market-specific technology.
Financial Health
StrongStrong · Growing, Hiring · 12% CAGR over 4y
Location
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Computed from 5 filingsDevelops data analytics software that transforms and enriches business data to support decision‑making. Provides tools for activity‑based costing, cost‑to‑serve analysis, profitability modelling, and…
Serves B2B customers in FMCG, retail, manufacturing and investment banking, including supply chain, finance, sales and marketing teams, plus corporates, institutional investors and asset managers…
Financial Health
HealthyHealthy · -55% CAGR over 4y
Location
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Computed from 3 filingsProvides B2B lead generation through managed cold email outreach campaigns. Services include prospect data sourcing and verification, copywriting, campaign setup, domain and mailbox provisioning,…
Serves B2B companies, particularly SME brands, that want to reach decision-makers through outbound email. Targets sales and marketing teams across multiple sectors, including businesses testing new…
Financial Health
StrongStrong · Hiring · 50% CAGR over 4y
Location
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Computed from 5 filingsProvides Salesforce consulting, development and implementation services, specialising in Experience Cloud portals and online communities. Develops Salesforce-native applications for knowledge…
Serves Salesforce-using organisations worldwide, from enterprise brands to small nonprofits, including member associations, higher education, healthcare, manufacturing, IT/high-tech and government…
Financial Health
StrongStrong · Growing, Hiring · 7% CAGR over 6y
Location
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Computed from 5 filingsProvides search engine marketing services, managing and optimising paid search advertising campaigns on platforms such as Google and Bing. Uses proprietary AI tools and analytics to audit accounts,…
Serves marketing and growth teams at global brands and high-growth companies, especially mature, high-spend advertisers in travel and ecommerce operating across multiple markets and languages.
Financial Health
StrongStrong
Location
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Computed from 3 filingsDevelops software and analytics tools for industrial process control, including PID tuning and loop performance monitoring. Provides PlantESP and LOOP‑PRO platforms, process analytics, system health…
Serves B2B industrial manufacturers and operators in chemicals, food and beverage, oil and gas, pulp and paper, power and utilities, basic materials, plus academic process-control programs.
Financial Health
StrongStrong · Growing · 4% CAGR over 2y
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Computed from 4 filingsDevelops cybersecurity software that detects and blocks automated bot traffic across websites, APIs and mobile apps. Provides AI‑driven server-side protection against threats such as credential…
Serves enterprise security, fraud and digital teams at online businesses, especially retail and eCommerce, media and streaming, telecommunications, travel and hospitality firms with websites, APIs…
Financial Health
StrongStrong
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Computed from 5 filingsProvides digital marketing services for B2B SaaS companies, including demand generation strategy, Google and LinkedIn advertising, content marketing, lead magnet campaigns, landing page development,…
Serves B2B SaaS startups and scale-ups, particularly founders and marketing leaders at companies with limited or no in-house marketing resources, from pre-£1m ARR to £20m ARR.
Financial Health
StrongStrong · Growing, Hiring · 44% CAGR over 4y
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Computed from 5 filingsDevelops event management software for planning and running corporate events, including registration websites, scheduling, budgeting, attendee apps, badge printing, email marketing, travel and…
Serves B2B enterprise event and marketing teams, particularly in legal, finance, automotive and pharmaceutical organisations running live, virtual and hybrid corporate events.
Financial Health
StrongStrong · Growing, Hiring · 18% CAGR over 4y
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Computed from 4 filingsProvides recruitment and staffing services, supplying contract and permanent professionals to client organisations. Offers contractor sourcing, candidate placement, and IR35 compliance solutions…
Serves employers and hiring teams seeking contract or permanent personnel, particularly in finance, supply chain management, manufacturing, technology and HR, across the UK, Europe and USA; also…
Financial Health
HealthyHealthy · 0% CAGR over 3y
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Computed from 5 filingsProvides software for managing corporate giving and employee volunteering programmes, including payroll giving, donation matching, charity payments, grant management, reporting, and charity due…
Serves HR, CSR/ESG and community engagement teams at large enterprises, especially banks, building societies and other global corporations managing employee giving, volunteering and grant programmes…
Financial Health
StableStable · -2% CAGR over 4y
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Computed from 5 filingsDevelops identity verification and KYC software that captures and analyses ID documents, biometrics and payment cards. Provides tools for document verification, liveness and deepfake detection,…
Serves B2B customers in financial services, payments, crypto, marketplaces, healthcare, telecoms, hospitality and travel, and iGaming, especially teams responsible for onboarding, compliance, fraud…
Financial Health
StrongStrong
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Computed from 5 filingsDesigns and develops B2B e‑commerce and lead‑generation websites. Provides platform selection, systems integration, and digital marketing services, working with platforms such as Magento, Shopify,…
Serves B2B manufacturers, wholesalers and distributors, plus D2C businesses, seeking eCommerce platforms, integrations and digital marketing support for domestic or international sales.
Financial Health
StrongStrong · Growing, Hiring · 8% CAGR over 4y
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Computed from 3 filingsDevelops industrial data operations software that connects, models and streams data from manufacturing systems and equipment to enterprise and cloud applications, supporting analytics, unified…
Sells to industrial manufacturers and enterprise operations teams pursuing Industry 4.0, including life sciences, regulated manufacturing, OEMs, and companies with plant-floor, cloud, and analytics…
Financial Health
StrongStrong · Growing, Hiring · 80% CAGR over 3y
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Computed from 5 filingsDevelops and operates a software platform for customer success teams. The platform centralises customer data, tracks customer health metrics, automates workflows, manages onboarding and post‑sales…
Serves B2B SaaS companies’ customer success and post-sales teams, including executives, CS leaders, CS managers, onboarding, sales, product and customer marketing teams managing high-touch or…
Financial Health
StrongStrong · Growing, Hiring · 46% CAGR over 4y
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Computed from 5 filingsProvides digital marketing services focused on paid media advertising. Manages and optimises campaigns across platforms such as Google, Meta and TikTok, and offers a proprietary technology platform…
Serves B2C and B2B businesses, targeting marketing leaders, founders and commercial teams that run digital advertising, including ecommerce, SaaS, fintech and consumer brands.
Financial Health
StrongStrong · Hiring · 68% CAGR over 4y
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Computed from 5 filingsProvides consulting, technology selection, deployment and managed services for unified communications, contact centre and AI platforms. Designs and integrates collaboration, CRM and automation tools…
Serves B2B organisations, particularly IT, operations, customer service and sales leaders seeking unified communications, contact centre, CX and AI platform support.
Financial Health
StrongStrong · Hiring · 26% CAGR over 5y
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Computed from 2 filingsDevelops decision‑intelligence software for real-assets investors and asset managers. Platform integrates data from internal systems and documents, analyses investment information, and provides…
Sells to B2B real-assets investors and managers, including asset managers and investment managers. Targets institutional firms that need decision support for deal evaluation, portfolio oversight, and…
Financial Health
StrongStrong · Growing, Hiring · 140% CAGR over 1y
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Computed from 3 filingsDevelops engineering software and provides technical services for computer‑aided engineering and product lifecycle management. Offers simulation tools for thermal, structural and manufacturing…
Serves B2B engineering and manufacturing organizations, including OEMs, suppliers and startups, across aerospace, automotive, electronics, energy, medical, heavy equipment, marine, construction and…
Financial Health
StrongStrong · Growing, Hiring · 11% CAGR over 2y
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Computed from 2 filingsProvides technology and operational support for a securities finance platform, enabling the arrangement and processing of securities lending and financing transactions, including automated trading,…
Serves global financial institutions active in securities finance, including agent lenders, broker-dealers, beneficial owners, repo and collateral desks, and trading, operations, compliance and data…
Financial Health
HealthyHealthy · Profitable, Hiring · 12% CAGR over 1y
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Computed from 2 filingsProvides B2B marketing services for technology companies, including brand positioning, go‑to‑market strategy, campaign and content production, web development, organic search optimisation and paid…
Serves scaling B2B technology companies, primarily marketing and go-to-market teams seeking support with pipeline growth, positioning, campaigns, content, web, organic growth and paid advertising.
Financial Health
HealthyHealthy · 0% CAGR over 1y
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Computed from 3 filingsProvides digital transformation and IT services including implementation and support of Microsoft Dynamics 365 Business Central and Dynamics NAV, Microsoft Power Platform solutions, business…
Serves businesses seeking Microsoft Dynamics, Business Central, NAV and Power Platform support, including finance, sales, operations and manufacturing teams needing digital transformation and IT…
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HealthyHealthy · Hiring · 13% CAGR over 2y
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Computed from 3 filingsDevelops a cloud-based carbon accounting and sustainability reporting platform for businesses. Provides carbon calculators, regional emissions data, AI-driven analysis, and tools for employees and…
Sells to businesses and sustainability/ESG teams needing carbon accounting across their organisation, including employee and supplier engagement. Targets companies with Scope 3 reporting needs and…
Financial Health
StrongStrong · Hiring · 29% CAGR over 2y
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Computed from 5 filingsProvides IT and technology recruitment services, sourcing permanent and contract professionals for sectors including fintech, digital start-ups, defence and iGaming. Offers candidate search,…
Serves start-ups, scale-ups and enterprise employers hiring IT and tech talent, with focus on digital/SaaS, fintech, defence and government, and iGaming companies across Europe and the Americas.
Financial Health
StrongStrong · Growing, Hiring · 19% CAGR over 4y
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Computed from 3 filingsDevelops software platform that integrates with Shopify, Brightpearl and Peoplevox to manage intermediary retail operations, centralising order, inventory and operational workflows for e‑commerce and…
Sells to ecommerce and retail businesses using Shopify, Brightpearl and Peoplevox, particularly operations and customer experience teams managing retail workflows across multiple systems.
Financial Health
HealthyHealthy · 0% CAGR over 2y
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Computed from 5 filingsProvides recruitment and talent search services focused on technology roles in energy, commodities and fintech sectors, placing permanent and contract professionals. Also offers technology advisory…
Serves energy, commodities and fintech organisations hiring technology talent, including founders, C-suite leaders and technology hiring managers building permanent or contract teams in E/CTRM, data,…
Financial Health
HealthyHealthy · -11% CAGR over 4y
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Computed from 5 filingsProvides an embedded integration platform for SaaS applications, offering API connectors, a low‑code workflow builder and multi‑tenant infrastructure to orchestrate data between SaaS systems, APIs…
Serves B2B SaaS vendors, AI software companies and service providers, particularly product and engineering teams managing multi-tenant platforms and customer-facing integrations.
Financial Health
StrongStrong · Hiring · 9% CAGR over 4y
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Computed from 5 filingsProvides managed IT services including help desk support, network and data centre management, cybersecurity monitoring, firewall management, and cloud services. Also conducts penetration testing,…
Serves business owners and IT decision-makers across charity, financial services, hospitality, legal, healthcare, retail, manufacturing, education and public sector organisations.
Financial Health
StrongStrong · Growing, Hiring · 17% CAGR over 4y
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Computed from 5 filingsProvides recruitment and headhunting services for venture‑backed SaaS and technology companies, focusing on go‑to‑market roles such as sales, marketing and revenue leadership, and connecting…
Serves venture-capital-backed SaaS and tech companies worldwide, particularly founders and go-to-market leaders scaling commercial teams; also engages SaaS candidates seeking new roles.
Financial Health
StableStable · -70% CAGR over 4y
Location
Unlock all 357 leads
Showing 50 of 357 — +307 more with verified decision-maker contacts, live data, and CRM sync.
Unlock all 357 leads
Showing 50 of 357 — +307 more with verified decision-maker contacts, live data, and CRM sync.
How Apollo.io 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. B2B companies are identified using Firmbase's semantic classification of company activity, built from filings, websites and registered SIC codes rather than SIC codes alone. The detected counts and share figures on this page are computed within that sector cohort, so "share" always means share of B2B companies with a detectable system — not of all UK companies.
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.
Apollo.io is a trademark of its respective owner. Firmbase is not affiliated with, sponsored by, or endorsed by the trademark owner.
UK B2B by Lead generation
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Frequently asked questions
How many UK B2B companies use Apollo.io?
What share of UK B2B companies run Apollo.io?
How is Apollo.io usage detected?
What size B2B companies use Apollo.io in the UK?
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