B2B Companies Using Constant Contact in the UK: 169 Active Firms (2026)
B2B companies using email marketing sell products or services to other organisations across the UK with structured digital outreach.
For business-to-business suppliers, this email-marketing platform is usually a contact-management and outbound-nurture layer rather than the core system of record. It supports newsletter capture, campaign segmentation, opt-out handling and routine customer updates, often alongside a sales database and website analytics. Adoption tends to signal a company with a named marketing owner, a repeatable direct-channel motion and enough budget discipline to manage lists, templates and compliance processes. The fit is clearest where sales cycles are consultative, customer communication is regular and teams want a lighter-weight tool before moving into broader marketing-automation suites.
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In the UK, 169 actively trading business-to-business companies are detected running this email-marketing platform. Reported headcount totals 1,831 people, which points to a cohort with some employer footprint rather than a list made up only of dormant web estates. Among detected marketing-automation systems in this sector, the platform profiled here ranks ninth at 1.8%. The regional skew is led by London at 22.5%, followed by the North West at 16.0%, the South East at 13.6%, the East of England at 11.2% and the West Midlands at 9.5%.
Business-to-business is not licensed as a category in the UK, so regulatory exposure follows the underlying activity: financial services, telecoms, data processing or professional services can each bring different rulebooks. For marketing operations, the ICO treats direct marketing by electronic mail, calls and fax under PECR. The electronic-mail consent rule does not apply to corporate subscribers, but senders still need to identify themselves and provide a valid opt-out address. UK GDPR still applies where business-contact data identifies individuals, and live marketing calls require screening against the relevant telephone preference registers where organisations or individuals have objected.
Adoption appears more tactical than platform-defining. Companies running this stack tend to be at the stage where newsletters, nurture emails and customer updates need process, but where marketing operations may still sit close to sales rather than as a separate systems function. Over time, email tools are likely to be pulled further into sales databases, consent-management workflows and analytics reporting. Switching pressure may come less from message volume and more from governance, integration burden and the desire to reduce the number of overlapping tools in the commercial stack.
Adoption by company size
Adoption of Constant Contact varies by company size across the trading UK B2B companies in this cohort. 0.1% of the 76,784 companies with under 10 employees run Constant Contact (112 detected). 0.2% of the 31,788 companies with 10–50 employees run Constant Contact (53 detected). 0.1% of the 3,773 companies with over 50 employees run Constant Contact (3 detected).
169
Active firms
2026
1.8%
Of detected Marketing automation share
UK B2B
6
Median headcount
Filed accounts
365
Verified contacts
Across this cohort
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Key facts
About 10% of the trading cohort reports turnover above £5M (18 of 169 firms) — the rest sits below that revenue band.
6% of the cohort was incorporated since 2022 (11 firms), so a sizeable share is in its first few filing cycles.
B2B firms running this email-marketing platform account for 1.8% (169) of 9,511 detectable marketing-automation systems in the sector.
London accounts for 22.5% (38) of the cohort, followed by the North West at 16.0% (27) and the South East at 13.6% (23).
Sector tags skew towards supplier and production markets, with Wholesale & Distribution at 19.5% (33), Advanced Manufacturing at 16.6% (28) and SaaS at 11.2% (19).
Co-occurring website tools suggest a content-led stack: 69.8% (118) also run a publishing system, 61.5% (104) use analytics tracking and 42.0% (71) use tag-management tooling.
ICO guidance says PECR covers direct marketing by live or automated calls, electronic mail and fax, while UK GDPR still applies where business-contact data is processed.
Email market share among UK B2B
Share of the 9,511 UK B2B with a detectable system. As of June 2026.
What else do Constant Contact-running B2B run?
Share of the 169 Constant Contact-running UK companies where each technology was also detected. As of June 2026.
Where Constant Contact 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.
6
Median headcount
£618.4K
Median UK turnover
10.7%
Above £5M turnover
11
Incorporated since 2022
365 verified decision-maker contacts
across these 169 companies, with emails available in Firmbase. Filter by role, seniority and stack.
Top UK B2B using Constant Contact
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 B2B direct marketing services including telemarketing, email marketing campaigns and telephone surveys. Supplies marketing databases and contact lists for businesses, schools and public…
Serves B2B organisations targeting decision makers in UK businesses, schools and the public sector, including teams seeking contacts by procurement responsibility across functions such as finance,…
Financial Health
DistressedDistressed · -16% CAGR over 4y
Location
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Computed from 5 filingsProvides a B2B social media management and analytics platform. Tools support publishing, social listening, employee advocacy, and performance measurement, with integrations to CRM and marketing…
Serves B2B marketing, sales/revenue and HR teams at data-driven organisations, especially in tech/software, business services, legal services and manufacturing, with a global customer base of B2B…
Financial Health
HealthyHealthy · Hiring · 35% CAGR over 4y
Location
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Computed from 3 filingsDevelops video‑centric event monitoring and workflow software for security operations centres, central monitoring stations, and guard services. The platform integrates cameras, sensors, and other…
Sells to commercial central monitoring stations, guard companies, systems integrators and security service organisations serving enterprise and large commercial customers, plus multinational…
Financial Health
StableStable · -87% CAGR over 2y
Location
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Computed from 5 filingsProvides marketing services for life science companies, including strategy and research, scientific writing and content creation, creative design, digital marketing, public relations, paid media,…
Serves B2B life science organisations, including biotech firms, contract manufacturers, CROs, diagnostics companies, instrument and reagent suppliers, informatics/software providers, industry…
Financial Health
StableStable · Hiring · 4% CAGR over 4y
Location
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Computed from 5 filingsDevelops cloud-based communication software for businesses. Provides the MultiLine platform enabling secure voice calls, SMS, and messaging on employee mobile devices, including Microsoft Teams…
Sells mainly to businesses needing secure employee-client communications, especially firms in financial services, healthcare/pharma, education, construction and field services,…
Financial Health
StableStable · -51% CAGR over 5y
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Computed from 3 filingsProvides market research services including qualitative and quantitative studies, survey programming, respondent recruitment for B2B, healthcare and consumer audiences, and data collection. Also…
Serves businesses and research teams needing market research participants and data across B2B, healthcare, consumer and hard-to-reach audiences, including organizations running quantitative surveys…
Financial Health
StableStable · 0% CAGR over 2y
Location
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Computed from 3 filingsPublishes industry publications and operates events and conferences across multiple sectors. Also provides content marketing platforms and digital media channels that distribute editorial content and…
Financial Health
StableStable · -4% CAGR over 2y
Location
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Computed from 5 filingsProvides data management software, analytics and consulting services for healthcare organisations, particularly NHS trusts. Offers tools for waiting list management, cancer pathway tracking, capacity…
Serves NHS healthcare organisations, including acute trusts, integrated care systems, community providers and operational teams responsible for elective care, cancer pathways, waiting lists and…
Financial Health
HealthyHealthy · Hiring · 7% 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 AI-powered conversation intelligence software for contact centres, analysing customer interactions, delivering real-time guidance to agents, automating quality assurance scoring, and…
Serves contact centres and customer experience teams in financial services, insurance, credit unions, consumer goods and services, utilities and healthcare, including operations, QA, sales, fraud and…
Financial Health
StrongStrong · Hiring · 20% CAGR over 4y
Location
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Computed from 5 filingsProvides employer branding research and analytics, analysing large datasets on employer reputation to deliver insights, reports, and benchmarking tools such as the Employer Brand Index to help…
Serves HR, talent acquisition and employer brand leaders at large enterprises and multinationals, including Fortune 500 organisations, focused on employer reputation across geographies.
Financial Health
StableStable · Hiring · 6% CAGR over 4y
Location
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Computed from 5 filingsDevelops and supplies software development platforms and tools including BBx and BBj Business BASIC interpreters, database management systems, and application components. Provides ERP add‑ons,…
Serves B2B customers worldwide, including software companies, independent software developers, application developers, and end-user IT departments at organisations running or building business…
Financial Health
StrongStrong · Hiring · 7% CAGR over 4y
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Computed from 5 filingsDevelops reservoir modelling and simulation software used by energy and mining companies to analyse subsurface geology, plan wells, simulate fluid flow, and optimise reservoir production and surface…
Sells B2B to oil and gas operators, energy companies, mining firms and new-energy developers, particularly geoscience, reservoir, production engineering and subsurface teams managing reservoirs, CCS,…
Financial Health
StrongStrong · Hiring · 4% CAGR over 4y
Location
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Computed from 5 filingsProvides economic research and consultancy on global macroeconomics, geopolitics and financial markets. Produces economic models, risk scenarios and data analysis, and offers subscription research,…
Serves B2B and public-sector buyers, including governments, policymakers, banks, financial institutions, LGPS clients, pension funds and non-profits seeking macroeconomic, geopolitical and…
Financial Health
HealthyHealthy · Hiring · 7% CAGR over 4y
Location
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Computed from 5 filingsProvides ticketing and visitor management software for attractions such as zoos, museums and events. Its Galaxy platform supports online and on‑site ticket sales, admission control, memberships, CRM,…
Serves B2B operators of visitor attractions, including zoos, gardens, museums, historic houses, exhibitions and events, particularly teams responsible for ticketing, admissions, memberships and guest…
Financial Health
StableStable · -5% CAGR over 4y
Location
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Computed from 5 filingsProvides executive search and leadership consulting services, recruiting senior executives and board members for organisations. Advises on leadership development, organisational effectiveness, team…
Serves businesses, nonprofits and investors needing senior leadership talent, including boards and C-suites across financial services, healthcare, consumer, industrial, technology, private equity and…
Financial Health
HealthyHealthy · Hiring · 7% CAGR over 4y
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Computed from 5 filingsProvides IBM i (AS/400) software development, application modernization, and system integration services. Offers cloud hosting, system monitoring tools, and subscription-based cloud accounting…
Serves businesses that rely on IBM i/AS400 systems, including IT teams, controllers and operations leaders needing hosting, monitoring, integration and cloud accounting software across multiple…
Financial Health
HealthyHealthy · -13% CAGR over 4y
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Computed from 5 filingsProvides managed IT support and network services for businesses, including IT infrastructure management, cybersecurity, email security, and backup and disaster recovery. Supplies and supports…
Sells to businesses needing outsourced IT support, managed services and business software, including users of Microsoft 365, Dynamics 365 and Pegasus Opera. Targets organisations in Croydon, London,…
Financial Health
StableStable · -2% CAGR over 4y
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Computed from 5 filingsProvides research and analysis on vaccines and gene therapies, producing market forecasts, pipeline reviews and disease analyses for pharmaceutical and biotechnology stakeholders. Publishes…
Serves businesses and organisations working in or collaborating with the vaccine and gene therapy industries, particularly teams evaluating development cases for new vaccines, immune-based therapies…
Financial Health
StableStable · 0% CAGR over 4y
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Computed from 3 filingsProvides pay and reward consultancy and HR software, including salary benchmarking, job evaluation, pay framework design, bonus and incentive scheme development, and equal pay audits. Also offers…
Serves B2B organisations from startups to enterprises, primarily HR, reward and compensation teams needing support with pay strategy, benchmarking, job evaluation, equal pay and organisational…
Financial Health
HealthyHealthy · Hiring · 21% CAGR over 2y
Location
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Computed from 5 filingsDevelops a mobile publishing platform used by media companies to create and manage iOS, Android and web apps. The software supports digital editions, live content, podcasts and video, and provides…
Serves B2B publishers and media brands, including newspapers, magazines and digital-first news organisations, targeting product, audience, subscription and editorial teams that manage reader…
Financial Health
HealthyHealthy · Hiring · 10% CAGR over 4y
Location
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Computed from 3 filingsDevelops and supplies business productivity software applications, including tools for asset and inventory management, staff time and attendance, delivery management, inspections and compliance,…
Serves B2B organisations across wholesale, ecommerce, supermarket and food and drink sectors, plus facilities, maintenance and field-service teams managing staff, assets, deliveries and compliance.
Financial Health
WeakWeak · Hiring · 123% CAGR over 2y
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Computed from 5 filingsProvides consulting and advisory services to the hospitality industry, including hotel valuations and appraisals, feasibility and market studies, asset management, brokerage and transaction advisory,…
Serves B2B hospitality sector clients, including hotel owners, investors, lenders, developers, operators, brands, and public or private bodies involved in hotels, resorts, and convention, sports or…
Financial Health
HealthyHealthy · -3% CAGR over 4y
Location
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Computed from 3 filingsProvides enterprise data management and modelling software from third‑party vendors, including tools for data intelligence, data cataloguing and enterprise architecture, alongside consultancy,…
Serves businesses, organisations and individual data professionals across industries, targeting enterprise teams responsible for data modelling, data management, data intelligence and enterprise…
Financial Health
WeakWeak · 0% CAGR over 2y
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Computed from 5 filingsDevelops reliability, safety and availability analysis software used in engineering and asset management. Products support fault tree analysis, FMECA, reliability prediction, lifecycle cost…
Serves B2B engineering consultancies and multinational corporations needing reliability, functional safety, availability and security analysis, including teams working to automotive, aerospace and…
Financial Health
HealthyHealthy · Hiring · 5% CAGR over 4y
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Computed from 3 filingsProvides asset and business valuation, restructuring and disposal services for lenders, insolvency practitioners and investors. Assesses and sells property, plant, machinery and businesses, and…
Serves banks, asset-based and alternative lenders, insolvency practitioners, corporate recovery and restructuring professionals, debt advisers and private equity firms handling distressed assets or…
Financial Health
StrongStrong · Growing, Hiring · 12% CAGR over 2y
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Computed from 5 filingsDevelops and supplies software for television and video broadcasters, including integrated playout systems, closed captioning and subtitling tools, time‑delay broadcasting applications, teletext…
Serves B2B broadcast and media organisations, including TV broadcasters and video producers, with teams responsible for playout, captioning, subtitling, transcription and time-delay workflows.
Financial Health
StableStable · -16% CAGR over 4y
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Computed from 5 filingsDevelops natural language processing software for analysing unstructured text data. Provides emotion and sentiment analysis models, insight platforms, APIs, and consultancy to extract themes and…
Serves B2B organisations with large free-text feedback datasets, including healthcare providers, patient experience leaders, employers, mental health and wellbeing teams, consumer insight teams, and…
Financial Health
StableStable · Hiring · 15% CAGR over 4y
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Computed from 5 filingsProvides public relations and marketing services for the automotive aftermarket and related sectors. Services include media relations, social media management, email marketing, paid advertising,…
Serves B2B clients in the automotive aftermarket, commercial vehicle, industrial, agricultural and marine sectors, including suppliers and brands targeting garages, motor factors and trade audiences.
Financial Health
HealthyHealthy · -66% CAGR over 4y
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Computed from 4 filingsManufactures and distributes industrial chain products including roller chain, conveyor chain, agricultural chain, stainless steel chain, leaf chain and attachment chain, along with sprockets and…
Serves B2B customers and distributor networks in agriculture, construction, food, material handling, mining, oil and gas, packaging, printing, timber, waste, recycling, and water treatment sectors.
Financial Health
HealthyHealthy · Hiring · 4% CAGR over 3y
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Computed from 3 filingsSupplies industrial process control and measurement instrumentation, including pressure transmitters, flowmeters, analytical instruments, valves, fittings and regulators. Provides product selection…
Serves B2B engineering, maintenance and procurement teams in industrial process sectors, including energy, chemical processing, wastewater, pulp and paper, and other operators using process control…
Financial Health
StableStable · -6% CAGR over 2y
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Computed from 5 filingsProvides outsourced association and nonprofit management services, including marketing and communications, event planning, website and newsletter management, member engagement, board support, and…
Serves associations, nonprofits, trade bodies, government agencies and private companies, plus owners and executives of independent firms seeking peer knowledge exchange.
Financial Health
StableStable · -65% CAGR over 5y
Location
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Computed from 5 filingsOrganises sector-focused conferences and networking events for public and private sector professionals, particularly in government, healthcare, education, blue light services and enterprise IT,…
Serves senior public-sector and private-sector IT decision-makers, including central and local government, NHS/healthcare, blue light services, education, enterprise IT, security and digital…
Financial Health
StrongStrong · Hiring · 11% CAGR over 4y
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Computed from 5 filingsProvides payroll processing and payroll tax services, along with human resources administration, recruitment support, background checks, time and labour tracking, employee self‑service tools, and…
Serves businesses needing outsourced payroll, tax, HR, benefits and time-management support, targeting owners, finance teams and HR staff at small and mid-sized employers.
Financial Health
StrongStrong
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Computed from 3 filingsProvides executive search and leadership advisory services, recruiting board members, CEOs and senior executives for organisations across multiple sectors. Also offers board advisory, digital and AI…
Serves businesses and investors seeking board, CEO and senior executive talent, with sector focus on technology and software, private equity, consumer, financial services, professional services,…
Financial Health
StrongStrong · -33% CAGR over 1y
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Computed from 5 filingsProvides recruitment and talent services including executive search, HR consulting and contract staffing. Specialises in sourcing leadership and technical personnel for energy, infrastructure and…
Serves B2B clients in energy, infrastructure and supply chain sectors, including organisations in construction, utilities, transport, shipping, warehousing, renewables, nuclear and power generation…
Financial Health
HealthyHealthy · Hiring · 38% CAGR over 5y
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Computed from 3 filingsProvides travel and expense coordination services for clinical trials, arranging patient transport, accommodation, and logistics. Manages clinical trial payments and stipends, supporting…
Sells to biotechnology, pharmaceutical and CRO organisations running clinical trials, including global study teams needing patient travel and expense coordination. Also serves clinical trial patients…
Financial Health
StrongStrong · Hiring · 18% CAGR over 2y
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Computed from 5 filingsDevelops software add-ons and integrations for nonprofit CRM systems, particularly Blackbaud Raiser’s Edge NXT. Offers products including Chimpegration, Importacular and Audit Trail, and provides…
Serves nonprofit organisations, charities and social-good teams using Blackbaud Raiser’s Edge NXT or Salesforce, including fundraising, database and operations staff.
Financial Health
WeakWeak · -54% CAGR over 4y
Location
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Computed from 5 filingsManufactures and supplies window covering products including blinds, shades and motorised window treatment systems. Provides product samples, showroom access and online ordering for retailers and…
Serves B2B trade and wholesale buyers in the window-coverings market, including businesses that order online, request samples, use showroom support or apply for credit.
Financial Health
StrongStrong · Growing, Hiring · 19% CAGR over 4y
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Computed from 3 filingsActs as an insurance broker providing commercial and business insurance policies, including employers’ liability, motor, professional indemnity, product, travel and directors’ and officers’ cover for…
Serves B2B clients ranging from small shops, offices and contractors to established enterprises with international operations, with emphasis on life science firms such as medical device developers…
Financial Health
StrongStrong · Growing · 0% CAGR over 2y
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Computed from 3 filingsProvides import and distribution of audio and video equipment for hi‑fi, home cinema, and professional installations. Supplies amplifiers, speakers, turntables, projectors, cables and AV components…
Serves hi-fi and home cinema retailers, custom installation specialists and commercial AV integrators handling premium audio and video brands.
Financial Health
StrongStrong · Growing · 0% CAGR over 2y
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Computed from 3 filingsProvides serviced office space for businesses, including private offices for small teams, meeting room hire, co‑working space, and virtual office and mailing address services, with broadband,…
Serves freelancers, start-ups, SMEs and international corporates seeking flexible workspace across UK locations, typically for teams of 1–30 people.
Financial Health
HealthyHealthy · 2% CAGR over 2y
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Computed from 5 filingsDevelops and provides online booking and scheduling software for public sector organisations, including councils, government departments and NHS services. Platform supports appointment booking, event…
Serves UK public sector organisations, including local councils, central government departments and NHS teams that manage citizen-facing appointments, events, facilities and internal workspace…
Financial Health
HealthyHealthy · -65% CAGR over 4y
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Computed from 3 filingsProvides accountancy and business advisory services including audit and accounts preparation, tax and VAT compliance, payroll and HR support, and business growth advisory. Uses digital accounting…
Serves businesses of varying sizes, including startups and overseas-headquartered firms with UK compliance needs, plus individuals seeking tax and accountancy support in the UK and globally.
Financial Health
HealthyHealthy · 0% CAGR over 2y
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Computed from 2 filingsDesigns and manufactures RF antenna systems and related accessories for wireless communications. Product range includes cellular, 5G, Wi‑Fi, GNSS, LPWA and VHF/UHF antennas, plus mounting hardware,…
Serves B2B and public-sector buyers in public safety, transport, enterprise networking, industrial IoT, utilities, mobile networks, and military/defence communications.
Financial Health
StrongStrong · Profitable, Growing · 1% CAGR over 1y
Location
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Computed from 3 filingsDesigns and installs professional audio‑visual and unified communications systems for workplaces and public venues, including video conferencing, meeting room technology, digital signage, audio…
Serves B2B and public sector organisations needing professional AV and collaboration systems, particularly corporate workplaces, education providers, healthcare, hospitality and leisure venues,…
Financial Health
HealthyHealthy · Profitable, Hiring · 13% CAGR over 2y
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Computed from 3 filingsDesigns, builds and operates modular high‑density data centres for AI and high‑performance computing. Provides co‑location hosting and deploys waterless facilities that capture and supply waste heat…
Serves B2B compute users needing AI and HPC colocation hosting, and heat-network partners such as district heating scheme operators, public-sector estates, housing and industrial sites seeking…
Financial Health
HealthyHealthy · Hiring · 50% CAGR over 2y
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Computed from 5 filingsProvides marketing services including digital marketing, SEO, PPC advertising, web design and development, branding, content and email marketing, social media management, media planning, and…
Serves businesses, charities and other organisations, including retail, consumer-facing and B2B companies across a broad range of industries.
Financial Health
HealthyHealthy · Hiring · 3% CAGR over 4y
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Computed from 3 filingsProvides leadership, management and team development training for organisations. Delivers courses, apprenticeships and coaching covering leadership skills, team building, talent development, mental…
Serves public and private sector organisations across the UK and Europe, targeting HR, L&D and senior management teams responsible for developing leaders, managers, graduates, apprentices and staff…
Financial Health
StableStable · -12% CAGR over 2y
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Computed from 3 filingsProvides shared steel keg pooling and supply chain services for breweries. Supplies, tracks, cleans and redistributes reusable kegs through a pay‑per‑fill model, managing inventory, logistics and…
Serves brewers and breweries, from craft producers to large global brewing operations, seeking outsourced keg supply chains and reusable keg pools across international markets.
Financial Health
StableStable · Hiring · 17% CAGR over 2y
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How Constant Contact 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.
Constant Contact is a trademark of its respective owner. Firmbase is not affiliated with, sponsored by, or endorsed by the trademark owner.
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Frequently asked questions
How many UK B2B companies use Constant Contact?
What share of UK B2B companies run Constant Contact?
How is Constant Contact usage detected?
What size B2B companies use Constant Contact in the UK?
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