Marketing Agency Companies Using Leadfeeder in the UK: 92 Active Firms (2026)
Marketing agencies running visitor-identification analytics use website behaviour data to qualify inbound demand across the UK.
Visitor-identification analytics gives marketing agencies a way to connect anonymous website visits with account-level sales follow-up, which suits firms selling demand generation, performance media, SEO, content and account-based marketing to commercial clients. Adoption tends to signal a direct-channel posture: the agency expects its own site to create prospect intent, has sales capacity to work that intent, and is comfortable joining marketing operations with CRM-style follow-up. Typical users look more like B2B revenue partners than campaign-only creative studios.
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92 UK marketing agencies are actively trading with this visitor-identification stack detected on their public websites. Together they report 1,291 employees, pointing to a cohort of specialist teams rather than very large agency groups. Within detected analytics use across 3,016 UK marketing agencies, the system profiled here sits fifth with a 3.1% share. Adoption is regionally tilted towards London at 26.1%, followed by the South East at 17.4% and the South West at 16.3%, which broadly mirrors where B2B digital-agency demand is often concentrated.
Marketing agencies are not licensed under a single sector regime, but the work around visitor identification touches several rulebooks. The ICO regulates data protection and PECR, so cookie consent, privacy notices, lawful basis and direct-marketing permissions matter when website behaviour is tied to follow-up. Ofcom has a role where public electronic communications networks are misused, while the CMA and trading standards can act on unfair-trading issues. Advertising claims also sit under the ASA and CAP Code, with the DMA code adding a trade-body standard for direct-marketing members.
Adoption appears most likely to deepen among agencies that sell accountable demand generation and already operate a joined-up sales process. Smaller creative shops may find the tool harder to justify unless inbound enquiry volume is high enough to support routine follow-up. Procurement pressure is also likely to rise as clients ask how visitor-level signals are collected, consented and used. Over time, visitor-identification features may be absorbed into broader analytics, CRM and campaign-management stacks, leaving specialist tools to compete on data quality, integration depth and compliance posture.
Adoption by company size
Adoption of Leadfeeder rises with company size across the trading UK marketing agency companies in this cohort. 0.1% of the 54,246 companies with under 10 employees run Leadfeeder (45 detected). 2.3% of the 1,903 companies with 10–50 employees run Leadfeeder (43 detected). 2.1% of the 146 companies with over 50 employees run Leadfeeder (3 detected). That is a 2% gap between the over 50 employees and under 10 employees bands.
92
Active firms
2026
3.1%
Of detected Analytics share
UK marketing agency
9
Median headcount
Filed accounts
183
Verified contacts
Across this cohort
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Key facts
About 3% of the trading cohort reports turnover above £5M (3 of 92 firms) — the rest sits below that revenue band.
3% of the cohort was incorporated since 2022 (3 firms), so a sizeable share is in its first few filing cycles.
Within marketing agencies with a detectable analytics system, the visitor-identification system on this page accounts for 3.1% of detected installations, or 92 of 3,016 companies.
London accounts for 26.1% of the cohort, followed by the South East at 17.4% and the South West at 16.3%.
A website publishing system is also detected at 84.8% of the cohort, while a tag-management layer appears at 60.9%.
Marketing agencies are not subject to a single sector licence, but the ICO regulates data protection and PECR for direct marketing, while the ASA applies the CAP Code to advertisers, agencies and media.
UK ad spend increased by 10.4% in 2024 to £42.6 billion, with online formats growing 13.2% and taking £4 in every £5 of budgets.
Lead generation market share among UK Marketing Agency
Share of the 3,016 UK Marketing Agency with a detectable system. As of June 2026.
What else do Leadfeeder-running Marketing Agency run?
Share of the 92 Leadfeeder-running UK companies where each technology was also detected. As of June 2026.
Where Leadfeeder Marketing Agency 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.
9
Median headcount
£621K
Median UK turnover
3.3%
Above £5M turnover
3
Incorporated since 2022
183 verified decision-maker contacts
across these 92 companies, with emails available in Firmbase. Filter by role, seniority and stack.
Top UK Marketing Agency using Leadfeeder
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 digital marketing services for B2B companies, including SEO, paid search and social advertising, account-based marketing, content strategy, remarketing, conversion rate optimisation,…
Serves mid-market and enterprise B2B technology companies, particularly marketing and growth leaders responsible for demand generation, demand capture and full-funnel performance across multiple…
Financial Health
StableStable · 0% CAGR over 4y
Location
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Financial sub-scores
Computed from 5 filingsProvides B2B digital marketing services for SaaS, AI and technology companies, including go‑to‑market strategy, demand and lead generation, account‑based marketing, paid search and social…
Serves B2B SaaS, AI and technology companies, typically £2M-£20M ARR from seed to Series B, selling to marketing leaders, founders, revenue leaders, CFOs and fractional CMOs.
Financial Health
StrongStrong · Growing, Hiring · 12% CAGR over 4y
Location
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Financial sub-scores
Computed from 5 filingsProvides digital marketing and website development services for construction, property and built‑environment companies. Services include search engine optimisation, pay‑per‑click advertising,…
Sells to B2B clients in construction, property and built-environment manufacturing, including consultancies, software providers and specialist product manufacturers. Targets marketing teams and…
Financial Health
WeakWeak · Hiring · 14% CAGR over 4y
Location
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Financial sub-scores
Computed from 5 filingsProvides B2B digital marketing services including PPC advertising, search engine optimisation, web design and development, content marketing, and conversion rate optimisation. Also implements and…
Serves marketing and sales teams at growth-oriented B2B companies across the UK, including organisations adopting, migrating to, or optimising HubSpot.
Financial Health
StrongStrong · Growing, Hiring · 20% CAGR over 4y
Location
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Financial sub-scores
Computed from 5 filingsProvides marketing and digital strategy services including brand development, website design and build, search engine optimisation, performance marketing, data analysis and campaign management to…
Serves B2B organisations, charities and not-for-profits, including clients in retail, finance, travel and leisure, aerospace/technology and consumer brands, targeting marketing and leadership teams.
Financial Health
HealthyHealthy · -64% CAGR over 4y
Location
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Financial sub-scores
Computed from 5 filingsProvides lead generation and marketing services focused on the telecommunications and broadcast sectors. Identifies and engages decision‑making executives at telecom operators and service providers,…
Serves B2B hardware, software and technology vendors targeting telecoms and broadcast buyers, including teams selling to executives at MNOs, CSPs, MVNOs, broadband providers, broadcasters and network…
Financial Health
DistressedDistressed · -71% CAGR over 4y
Location
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Financial sub-scores
Computed from 3 filingsProvides digital marketing and corporate communications services, including branding, website design and development, data‑driven marketing, performance analytics, and digital transformation…
Serves B2B and B2C organisations, including large manufacturers, industrial firms, retail and consumer goods brands, and their marketing, corporate communications and digital teams.
Financial Health
WeakWeak · 0% CAGR over 2y
Location
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Computed from 5 filingsProvides digital marketing and creative services including branding, graphic design, social media marketing, pay‑per‑click advertising, lead generation, email marketing and data analytics, along with…
Serves B2B organisations, charities and community groups across varied industries, including local organisations and global brands with in-house teams needing external marketing expertise.
Financial Health
DistressedDistressed
Location
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Financial sub-scores
Computed from 5 filingsProvides digital marketing services including marketing strategy and planning, website design and development, search engine optimisation, paid search advertising, social media advertising and…
Serves ambitious specialist businesses across varied industries, including established firms and market leaders seeking clearer positioning, stronger visibility and more effective client acquisition.
Financial Health
DistressedDistressed · -16% CAGR over 4y
Location
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Computed from 5 filingsProvides digital marketing and brand services including brand strategy, creative campaigns, paid media advertising, search engine optimisation, digital PR and content marketing. Also designs and…
Serves B2B organisations and marketing leaders, especially in SaaS, clean energy, ecommerce, education, healthcare, HR software and professional services.
Financial Health
StrongStrong · Growing · 1% CAGR over 4y
Location
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Financial sub-scores
Computed from 3 filingsProvides B2B marketing services including marketing strategy, board‑level consultancy, campaign planning and evaluation, brand development, creative design, digital design and development, search…
Serves B2B organisations and brands, targeting board-level decision-makers and senior commercial or marketing leaders in businesses seeking growth and new market engagement.
Financial Health
WeakWeak · Hiring · 11% CAGR over 2y
Location
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Computed from 5 filingsProvides digital communications and marketing services including corporate communications, performance marketing, e‑commerce experience design, and creative content production. Develops enterprise…
Serves large and global businesses across sectors, especially corporate communications, investor relations, marketing, e-commerce and brand teams.
Financial Health
StableStable · -71% CAGR over 4y
Location
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Computed from 5 filingsProvides organic digital marketing services including search engine optimisation, content marketing, digital PR and link building. Also supports website migrations, SEO audits, content strategy,…
Serves B2B brands and growth/marketing teams, particularly ecommerce, SaaS, global hiring, healthcare and pharmacy businesses seeking organic search, content and digital PR support.
Financial Health
WeakWeak · -18% CAGR over 4y
Location
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Computed from 3 filingsProvides digital marketing services including website design and development, search engine optimisation, conversion rate optimisation, and digital strategy. Develops online platforms and digital…
Serves B2B organisations, membership bodies, ecommerce businesses, charities and cultural institutions, targeting marketing and digital teams seeking online engagement, lead generation and…
Financial Health
DistressedDistressed · 0% CAGR over 2y
Location
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Computed from 3 filingsProvides public relations and digital marketing services for science, engineering and technology companies, including media relations, content marketing, SEO, social media, PPC advertising, branding,…
Serves B2B science, technology, engineering and manufacturing companies, from small businesses to global enterprises, including automation, cleantech, construction, electronics, energy, industrial IT…
Financial Health
DistressedDistressed · 0% CAGR over 2y
Location
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Computed from 5 filingsProvides marketing and sales support for companies in the scientific, laboratory and life sciences sectors, including digital marketing, SEO, PPC, content creation, database building, market…
Sells to B2B organisations in the chemistry, life sciences, laboratory, medical and wider technical sectors, from organisations of all sizes to scientific businesses seeking support for sales,…
Financial Health
StrongStrong · Growing, Hiring · 8% CAGR over 4y
Location
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Computed from 5 filingsProvides digital marketing services for businesses, including digital strategy, search engine optimisation, content marketing, paid search and social advertising, email marketing, and website…
Serves SMEs and growing small businesses looking for external digital marketing support, including owners or marketing teams needing help with online growth channels.
Financial Health
StableStable · Hiring · 32% CAGR over 4y
Location
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Computed from 5 filingsProvides digital marketing and web development services, including SEO, PPC advertising, UX audits, conversion rate optimisation, and digital strategy. Designs and builds websites and web…
Serves businesses and business owners seeking digital growth support, including organisations needing marketing strategy, websites, UX, eCommerce, AI adoption, and consultancy across varied sectors.
Financial Health
StableStable · -62% CAGR over 4y
Location
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Computed from 3 filingsProvides digital marketing services including search engine optimisation, pay‑per‑click advertising, content marketing, digital PR and email marketing. Also designs and develops websites and…
Serves B2B and D2C brands seeking digital growth, particularly in home & garden, food & drink, lifestyle, SaaS and service industries, plus storage and removals companies. Targets ambitious ecommerce…
Financial Health
WeakWeak · -5% CAGR over 2y
Location
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Computed from 2 filingsProvides public relations and digital marketing services including media relations, website design, search engine optimisation, content creation, graphic design, video and animation production,…
Serves B2B organisations, including legal firms and professional services businesses, that need to reach prospects, attract clients and support sales pipelines through marketing communications.
Financial Health
StableStable · -20% CAGR over 1y
Location
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Computed from 5 filingsProvides B2B branding and marketing services including brand strategy, positioning, brand identity design, digital experience and website design, and campaign development. Works with organisations on…
Sells to B2B organisations, from growth companies to FTSE/global businesses, targeting leadership and marketing teams in sectors such as technology, events, professional services, construction and…
Financial Health
WeakWeak · -12% CAGR over 4y
Location
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Computed from 4 filingsProvides public relations, content marketing and social media services for B2B technology companies, particularly AI and emerging tech firms. Develops media campaigns, communications strategies and…
Serves B2B technology scaleups and challenger brands, including AI, deeptech and healthtech firms, often headquartered in Europe or internationally, with marketing and communications teams targeting…
Financial Health
WeakWeak · -11% CAGR over 3y
Location
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Computed from 5 filingsProvides digital marketing services including search engine optimisation, pay‑per‑click advertising, web design, social media management, email marketing, and content marketing, supporting businesses…
Serves businesses, primarily in London, seeking support with online customer acquisition, website performance and digital campaigns, including owners and marketing teams across varied sectors.
Financial Health
DistressedDistressed · -64% CAGR over 4y
Location
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Computed from 5 filingsProvides B2B marketing and business development consultancy services, including marketing strategy, lead generation campaigns, brand development, website design, content creation, PR, and…
Serves B2B companies, particularly leadership, sales and marketing teams seeking support with market awareness, lead generation, brand presence and business development across sectors such as…
Financial Health
DistressedDistressed
Location
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Computed from 5 filingsProvides e‑commerce consultancy and management services for consumer goods brands selling on online marketplaces, particularly Amazon. Services include marketplace strategy, account management,…
Serves B2B FMCG and grocery brands selling on Amazon and other marketplaces, especially food and drink, health and hygiene, pet care, and home and garden product businesses.
Financial Health
DistressedDistressed · -25% CAGR over 5y
Location
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Computed from 5 filingsProvides data‑driven marketing and lead generation services, including sourcing and trading consumer leads, managing and verifying personal data, and offering SaaS and technical integration tools to…
Serves B2B advertisers, marketing agencies, publishers and brands seeking compliant personal-data-led lead generation and customer acquisition, including large organisations managing customer…
Financial Health
DistressedDistressed · -7% CAGR over 4y
Location
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Computed from 5 filingsProvides digital marketing services including search engine optimisation, pay‑per‑click advertising, paid social media campaigns and Amazon advertising. Also offers digital strategy, conversion rate…
Serves growing UK and international brands, including eCommerce companies and B2B businesses, whose marketing teams need support scaling online revenue, visibility and lead generation.
Financial Health
HealthyHealthy · Hiring · 24% CAGR over 4y
Location
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Computed from 5 filingsDesigns and develops eCommerce and B2B websites, including Shopify and WordPress builds and Magento‑to‑Shopify migrations. Provides branding, digital marketing strategy, SEO, performance marketing,…
Serves eCommerce and purpose-led brands, particularly B Corps and sustainability-focused businesses, plus organisations in home, health and lifestyle, technology, professional services, and design…
Financial Health
HealthyHealthy · Growing · 0% CAGR over 4y
Location
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Computed from 5 filingsProvides eCommerce development and digital marketing services. Designs and builds Adobe Commerce (Magento) websites, offers platform integration, UX design, technical support and maintenance, and…
Serves growing national and international eCommerce brands operating across B2B, B2C and D2C, typically retailers and product-led businesses needing scalable commerce and marketing support.
Financial Health
StableStable · -10% CAGR over 4y
Location
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Computed from 5 filingsProvides public relations and communications services for B2B technology companies, including media relations, digital PR, content creation, social media management, executive visibility, and support…
Serves B2B technology companies, including cyber security, fintech, healthtech and digital infrastructure brands, seeking PR support for awareness, growth, product launches, thought leadership and…
Financial Health
DistressedDistressed · -8% CAGR over 4y
Location
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Computed from 5 filingsProvides digital marketing services including search engine optimisation, AI search strategy, pay‑per‑click advertising, content marketing, email automation, analytics, conversion rate optimisation,…
Serves businesses seeking digital marketing growth, including eCommerce brands, B2B and B2C companies, and firms in finance, healthcare and legal sectors, from retailers to professional services…
Financial Health
HealthyHealthy · Hiring · 15% CAGR over 4y
Location
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Computed from 5 filingsProvides marketing services to financial advisers, planners and financial services firms, including website design, branding, newsletters and blogs, social media management and advertising, client…
Serves B2B customers in financial services, especially financial advisers, planners and advisory firms. Also targets new start practices, established advisory businesses, support providers such as…
Financial Health
HealthyHealthy · Growing, Hiring · 18% CAGR over 4y
Location
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Computed from 5 filingsProvides conversion rate optimisation and customer experience consulting for digital products and ecommerce. Conducts user research, UX design, experimentation and data analytics, and supports…
Serves B2B clients, mainly enterprise and mid-market ecommerce, retail, consumer brand, technology, financial services and pharmaceutical organisations, including teams using Shopify.
Financial Health
StableStable · Hiring · 47% CAGR over 4y
Location
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Computed from 5 filingsProvides marketing and communications services including public relations, influencer marketing, creative campaign development, social media management, content production, performance marketing,…
Serves UK and international consumer and B2B brands, including beauty, sports, food and drink, fashion, lifestyle, ecommerce and corporate clients, typically marketing and communications teams.
Financial Health
StableStable · -2% CAGR over 4y
Location
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Computed from 5 filingsProvides marketing and creative agency services including brand strategy, advertising, digital campaigns, content production, social media and influencer marketing. Works with brands across sectors…
Serves B2B marketing teams and brand leaders at large organisations, growing brands and start-ups across healthcare, pharma, travel, hospitality, finance, insurance, fashion, retail, technology and…
Financial Health
StableStable · -62% CAGR over 4y
Location
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Computed from 4 filingsProvides digital design and development services including UX/UI consulting, website design and development, branding, and graphic design. Also develops software, ecommerce platforms, and mobile…
Serves B2B clients from start-ups to Fortune 100 companies, including ecommerce brands, SaaS logistics firms, education organisations and other businesses seeking digital agency support.
Financial Health
WeakWeak · 0% CAGR over 3y
Location
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Computed from 4 filingsProvides public relations, analyst relations and marketing services for B2B technology companies, including brand positioning, communications strategy, media relations, content creation, social media…
Serves B2B technology companies, from startups to established enterprise software, SaaS, AI and emerging tech vendors, targeting marketing and communications leaders.
Financial Health
WeakWeak
Location
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Computed from 3 filingsProvides digital agency services including web design, UI/UX, bespoke web and ecommerce development, technical consultancy, and paid media management such as paid search and paid social, along with…
Sells to ambitious B2B and consumer brands needing ecommerce and digital growth support, particularly marketing and ecommerce teams at retailers and multi-site businesses in sectors such as…
Financial Health
StableStable · 0% CAGR over 2y
Location
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Computed from 3 filingsProvides digital marketing and optimisation services for e‑commerce businesses, including conversion rate optimisation, experimentation, technical SEO, performance marketing, email automation, and…
Serves B2C eCommerce brands and multi-million-pound online retailers, especially Shopify and Magento merchants, with buyers including heads of eCommerce, digital marketing and growth teams.
Financial Health
StableStable · -87% CAGR over 2y
Location
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Computed from 5 filingsProvides social media marketing services including strategy development, content and creative production, paid social advertising, and performance analysis. Works with brands to plan, manage and…
Serves growth-focused consumer and B2B brands, including companies in technology, media, food, travel and professional information services, typically marketing teams seeking business impact from…
Financial Health
DistressedDistressed · -7% CAGR over 4y
Location
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Computed from 5 filingsProvides digital marketing services including pay‑per‑click advertising, paid social media campaigns, search engine optimisation, and performance creative. Plans, manages and optimises online…
Sells to businesses seeking outsourced digital marketing, including e-commerce, telecoms, utilities and consumer brands. Targets marketing decision-makers that want PPC, paid social, SEO and creative…
Financial Health
HealthyHealthy · -5% CAGR over 4y
Location
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Computed from 5 filingsProvides digital marketing services including digital advertising, web and e‑commerce development, brand strategy, film and motion production, and media campaign management. Also develops data‑driven…
Serves B2B brands in personalised retail, mobile leisure and related sectors, targeting organisations needing digital marketing, web and eCommerce, brand strategy, film, motion and media campaign…
Financial Health
StrongStrong · Growing, Hiring · 8% CAGR over 4y
Location
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Computed from 5 filingsProvides digital marketing and advertising services for tourism, cultural and visitor attractions. Services include marketing strategy, campaign planning and execution, and marketing optimisation to…
Serves B2B visitor-economy organisations, including tourism attractions, cultural venues, heritage sites, conservation bodies, nature destinations and activity/farm parks, from smaller attractions to…
Financial Health
WeakWeak · Hiring · 5% CAGR over 4y
Location
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Computed from 5 filingsProvides social media marketing services for brands, including social strategy development, creative content production, paid social advertising, influencer and creator partnerships, community…
Serves B2B marketing teams and CMOs at global brands and fast-moving challenger brands across consumer, retail, hospitality, technology and entertainment sectors.
Financial Health
HealthyHealthy · Hiring · 16% CAGR over 4y
Location
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Computed from 5 filingsProvides database marketing services including data processing, marketing database design and development, customer insight and analysis, marketing automation, and campaign support. Also offers…
Serves B2B brands and marketing teams needing database marketing support, customer insight and campaign automation. Targets organisations using customer data for 1-to-1 marketing, including users of…
Financial Health
DistressedDistressed · -31% CAGR over 4y
Location
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Computed from 5 filingsProvides sports marketing services including strategic consultancy, creative design, content marketing, video production, media planning, and campaign activations. Works with sports organisations and…
Serves B2B clients in the sports sector, including sports properties, rights holders, leagues, clubs, event organisers, sports councils and global consumer brands seeking to reach and monetise sports…
Financial Health
StableStable · -7% CAGR over 4y
Location
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Computed from 3 filingsProvides marketing strategy and delivery services including branding, website development, advertising campaigns, events, performance marketing, conversion funnels and lead generation. Also trains…
Serves businesses and brand owners with in-house marketing teams, especially organisations looking to replace or supplement an agency and develop internal marketing, AI and automation capability.
Financial Health
StrongStrong · Growing, Hiring · 18% CAGR over 2y
Location
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Computed from 5 filingsProvides marketing consultancy and services for investment and wealth management firms, including marketing strategy development, campaign implementation, digital marketing performance benchmarking,…
Serves B2B clients in the wealth and asset management sector, especially investment and wealth marketing teams seeking specialist marketing support, training, and benchmarking.
Financial Health
StableStable · Hiring · 20% CAGR over 4y
Location
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Computed from 5 filingsProvides digital marketing and technology services for membership organisations and trade associations, including PPC advertising, SEO, email automation and social media marketing, alongside…
Serves trade associations and membership bodies seeking to grow, engage and retain members, including teams responsible for member recruitment, engagement and digital member experience.
Financial Health
DistressedDistressed · -13% CAGR over 4y
Location
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Computed from 4 filingsProvides marketing and communications services for agriculture and animal health businesses, including public relations, branding, campaign development, media planning, digital and social media…
Serves B2B agribusiness, animal health and sustainability brands, including marketing and leadership teams seeking specialist agricultural communications expertise and farming audience insight.
Financial Health
WeakWeak · -10% CAGR over 4y
Location
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How Leadfeeder 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. marketing agency 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 marketing agency 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.
Leadfeeder 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
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