Marketing Agency Companies Using Lead Forensics in the UK: 71 Active Firms (2026)
Marketing agencies running website visitor analytics identify business website visitors and route engagement signals into UK sales workflows.
For marketing agencies, the buying centre sits between marketing operations, demand-generation managers and sales development rather than the creative studio. Running visitor-identification software usually signals an agency with retained business-to-business programmes, a direct sales motion and enough CRM discipline to act on account-level engagement before a form-fill. The fit is clearest where paid search, content, account-based marketing and sales-enablement work are sold to clients with longer buying cycles. Engagements tend to be commercially managed retainers, not isolated campaign builds, because the value depends on hand-off quality and follow-up cadence.
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UK adoption is narrow: 71 marketing agencies are actively trading and detected running this visitor-identification system on their public websites. Within the sector’s analytics ranking, it sits sixth at 2.4% detected share, behind the more widely deployed web analytics and tag-management tools used for routine reporting. Registered offices skew to London at 32.4%, then the South East at 14.1%, the West Midlands at 12.7%, the South West at 11.3% and the East of England at 8.5%. Reported headcount across these users totals 712 people, so this is a visible but specialist slice of the agency market.
Marketing agencies are not licensed as a sector, but visitor-identification workflows touch several UK regimes once browsing signals are linked to prospecting. The ICO regulates data protection and PECR for direct marketing, which makes consent, lawful basis, cookie notices and retention periods relevant to deployment. Ofcom has a role where misuse of public electronic communications networks is alleged, while the CMA and trading standards can act on unfair-trading rules. The ASA enforces the CAP Code for advertisers, agencies and media, and the DMA code adds a trade-body standard for direct marketing where membership applies.
Adoption appears selective, tied less to agency discipline than to whether sales teams can act on account-level intent. Smaller agencies may keep visitor identification as a sales-enablement layer while relying on broader analytics and tag-management tools for reporting. Larger agency groups tend to ask harder questions about consent capture, client disclosure and the hand-off between marketing operations and outbound sales. Vendor bundling also appears to be a constraint: when adjacent platforms fold in lighter identification features, standalone systems have to justify themselves through workflow fit, enrichment quality and sales follow-through rather than dashboard novelty.
Adoption by company size
Adoption of Lead Forensics 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 Lead Forensics (32 detected). 1.7% of the 1,903 companies with 10–50 employees run Lead Forensics (33 detected). 5.5% of the 146 companies with over 50 employees run Lead Forensics (8 detected). That is a 5.4% gap between the over 50 employees and under 10 employees bands.
71
Active firms
2026
2.4%
Of detected Analytics share
UK marketing agency
11
Median headcount
Filed accounts
163
Verified contacts
Across this cohort
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Key facts
About 11% of the trading cohort reports turnover above £5M (8 of 71 firms) — the rest sits below that revenue band.
2% of the cohort was incorporated since 2022 (2 firms), so a sizeable share is in its first few filing cycles.
Within marketing agencies with a detectable analytics system, this visitor-identification tool appears on 2.4% of sites in a 3,016-company denominator.
General web analytics is also detected across 62.0% of the cohort, suggesting visitor-identification tags are usually layered onto existing measurement stacks rather than used alone.
Tag-management tooling appears across 49.3% of the cohort, pointing to agencies that can route campaign and visitor signals through centralised deployment workflows.
Registered offices skew towards London, which accounts for 32.4% of the cohort, followed by the South East at 14.1%.
Campaign activity sits across ICO data-protection and PECR rules, ASA enforcement of the CAP Code, CMA and trading standards rules on unfair trading, and Ofcom oversight of misuse of public electronic communications networks.
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 Lead Forensics-running Marketing Agency run?
Share of the 71 Lead Forensics-running UK companies where each technology was also detected. As of June 2026.
Where Lead Forensics 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.
11
Median headcount
£773.6K
Median UK turnover
11.3%
Above £5M turnover
2
Incorporated since 2022
163 verified decision-maker contacts
across these 71 companies, with emails available in Firmbase. Filter by role, seniority and stack.
Top UK Marketing Agency using Lead Forensics
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 data-driven marketing and demand generation services for technology vendors, including lead generation, telemarketing, digital advertising, email campaigns, and market research. Uses IT…
Serves B2B technology vendors, managed service providers and IT channel partners targeting UK and Ireland IT budget holders, influencers and end-user organisations.
Financial Health
StableStable · -1% CAGR over 4y
Location
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Financial sub-scores
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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Financial sub-scores
Computed from 3 filingsProvides outsourced B2B sales and lead generation services, including SDR teams, appointment setting, telemarketing, inbound call handling, and inside sales. Also offers sales process audits, HubSpot…
Serves UK B2B companies seeking outsourced sales capacity, lead generation and pipeline growth, including SMEs and mid-market firms across sectors needing qualified meetings, inbound handling or…
Financial Health
WeakWeak · -91% CAGR over 2y
Location
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Financial sub-scores
Computed from 5 filingsProvides B2B marketing services for companies in technical and industrial sectors, including marketing strategy, brand development, creative campaign design, PR and media relations, website and…
Serves marketing leaders at B2B companies operating in complex or highly technical sectors, including construction, building products, energy, utilities and telecoms.
Financial Health
StrongStrong · Growing, Hiring · 8% CAGR over 4y
Location
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Financial sub-scores
Computed from 5 filingsProvides B2B marketing services including account-based marketing (ABM/ABX), campaign strategy, digital marketing, content creation, partner marketing, and digital design and development. Creates…
Serves B2B companies, including technology vendors, AWS partners and channel-led businesses, targeting marketing, demand generation and revenue-focused teams.
Financial Health
WeakWeak · -6% CAGR over 4y
Location
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Financial sub-scores
Computed from 4 filingsProvides channel marketing and partner engagement services for technology vendors, including partner programme strategy, messaging, content creation, campaigns, and enablement aimed at improving…
Serves B2B vendors with indirect sales channels, especially technology and channel-led firms, targeting partner marketing, channel sales and enablement teams managing partner ecosystems.
Financial Health
WeakWeak · -2% CAGR over 3y
Location
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Financial sub-scores
Computed from 5 filingsProvides HubSpot CRM consulting and implementation services, including onboarding, system integrations, user training and ongoing support. Develops revenue operations processes that align marketing,…
Serves B2B organisations using or adopting HubSpot CRM, especially marketing, sales and customer success teams seeking RevOps alignment, onboarding, integrations, support and training.
Financial Health
DistressedDistressed · Hiring · 3% CAGR over 5y
Location
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Financial sub-scores
Computed from 5 filingsProvides business‑to‑business marketing services including strategy development, creative campaign production, experiential and event marketing management, website design and digital development,…
Serves B2B brands and large organisations, including global businesses and public-sector bodies such as the NHS, transport, energy and technical/industrial firms, targeting marketing, communications…
Financial Health
DistressedDistressed
Location
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Financial sub-scores
Computed from 5 filingsProvides marketing services for IT and technology companies, including marketing strategy development, outsourced marketing support, content creation, inbound marketing campaigns, and delivery of…
Serves B2B IT and technology companies, including businesses in the UK technology channel seeking specialist external marketing support, from strategy and content to outsourced marketing and campaign…
Financial Health
StrongStrong · Growing, Hiring · 4% CAGR over 4y
Location
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Financial sub-scores
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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Financial sub-scores
Computed from 5 filingsProvides digital marketing services for businesses, including website design and development, user experience optimisation, SEO, PPC and paid social advertising, content marketing, social media…
Serves independent businesses with growth ambitions, including B2B firms in manufacturing, engineering, professional services and education, from local to global markets.
Financial Health
HealthyHealthy · Growing · 2% CAGR over 4y
Location
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Financial sub-scores
Computed from 5 filingsProvides digital marketing and web development services for businesses, including search engine optimisation, pay‑per‑click advertising management, social media management, email marketing,…
Sells to small and medium-sized businesses and growth companies, typically business owners or marketing teams seeking outsourced digital marketing, web development and analytics support.
Financial Health
WeakWeak · Hiring · 20% CAGR over 4y
Location
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Financial sub-scores
Computed from 5 filingsProvides B2B public relations and marketing services, including communications strategy, brand positioning, content creation, media relations, and campaign management. Develops targeted marketing and…
Serves B2B marketing leaders and complex organisations in aerospace, space, defence, security, construction, built environment, automotive, and health and safety sectors.
Financial Health
StableStable · -4% CAGR over 5y
Location
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Financial sub-scores
Computed from 5 filingsProvides marketing agency services including brand strategy and development, creative design, website and mobile app development, SEO and PPC advertising, social media management, content marketing,…
Serves B2B organisations and public-sector bodies in healthcare, pharma, property, legal, fintech, manufacturing and education, typically working with marketing managers and brand teams.
Financial Health
WeakWeak · -3% CAGR over 4y
Location
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Financial sub-scores
Computed from 5 filingsProvides marketing and communications services including public relations, brand strategy, digital marketing, website development, and campaign content. Works with organisations in sectors such as…
Serves B2B organisations in technology, financial services, energy, industrials and professional services, including SaaS, cybersecurity, fintech, asset management, renewables, manufacturing, legal…
Financial Health
HealthyHealthy · Hiring · 9% CAGR over 4y
Location
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Financial sub-scores
Computed from 5 filingsProvides brand strategy, creative design, web development and digital marketing services. Delivers SEO, PPC, social media, advertising and PR campaigns, alongside video production and event…
Serves B2B organisations across the UK and internationally, including education providers, energy and low-carbon businesses, medical education organisations and corporate marketing, communications…
Financial Health
HealthyHealthy · Growing, Hiring · 3% CAGR over 5y
Location
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Financial sub-scores
Computed from 3 filingsProvides data-driven marketing services including data strategy, email marketing campaigns, direct mail and door-drop distribution. Supports clients with marketing data management, audience…
Serves businesses and marketing teams using customer data for direct marketing, including email, direct mail and door-drop campaigns.
Financial Health
WeakWeak · 0% CAGR over 2y
Location
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Financial sub-scores
Computed from 5 filingsProvides branding, digital design and campaign activation services for financial technology and capital markets companies, including brand identity development, marketing campaigns and creative…
Serves B2B fintech and financial markets firms worldwide, including capital markets technology providers, trading platforms, post-trade infrastructure, collateral management and enterprise financial…
Financial Health
HealthyHealthy · 0% CAGR over 5y
Location
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Computed from 5 filingsProvides advertising, branding and digital marketing services. Develops creative campaigns, account-based marketing and fundraising communications for charities, asset management firms and…
Serves charities and B2B organisations, especially asset management and professional services firms, working with marketing, brand and fundraising teams.
Financial Health
WeakWeak · -68% CAGR over 4y
Location
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Financial sub-scores
Computed from 4 filingsProvides outsourced marketing services for B2B companies, particularly in engineering, manufacturing, electronics and aviation. Develops marketing strategies, marketing roadmaps, and delivers digital…
Serves B2B companies in engineering, manufacturing, electronics, aviation and related sectors, particularly businesses in Sussex, Surrey and Hampshire needing outsourced marketing support.
Financial Health
DistressedDistressed · -31% CAGR over 3y
Location
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Financial sub-scores
Computed from 5 filingsProvides integrated marketing services including brand development, creative design, public relations, social media management, performance marketing, content creation, stakeholder engagement, and…
Serves SMEs and organisations in B2B, B2C, construction, industrial and property sectors, including firms needing marketing support and stakeholder engagement around planning and construction…
Financial Health
StableStable · -7% CAGR over 5y
Location
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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 4 filingsProvides digital marketing services including social media advertising, pay‑per‑click advertising, search engine optimisation, digital PR, website design and development, content creation, email…
Serves UK SMEs and growing businesses, including eCommerce and D2C brands in fashion, jewellery, food and drink, health and beauty, pet care, FMCG, home and garden, education, and professional…
Financial Health
HealthyHealthy · Growing · 2% CAGR over 3y
Location
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Computed from 3 filingsProvides communications marketing and public relations services, including consumer and B2B PR, corporate communications, crisis management and employee relations. Develops data‑driven media and…
Serves global consumer and B2B brands, including retail, fashion, real estate and financial services businesses, typically marketing leaders seeking agency support.
Financial Health
DistressedDistressed · -92% CAGR over 2y
Location
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Computed from 5 filingsProvides performance marketing services for brands, including PPC and paid social advertising, Amazon Ads management, TikTok Shop and affiliate campaigns, Apple Search Ads and Google App campaigns,…
Serves B2B and consumer brands with in-house marketing teams, especially ecommerce, app and retail businesses seeking support across paid media, Amazon, TikTok Shop, app acquisition and customer…
Financial Health
HealthyHealthy · -3% CAGR over 4y
Location
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Computed from 5 filingsProvides pay‑per‑click (PPC) and paid media management services, planning and optimising online advertising campaigns across platforms including Google Ads, Microsoft Advertising, Meta (Facebook and…
Serves B2B clients and consumer brands, particularly ecommerce and retail businesses, targeting marketing leaders, ecommerce managers and business owners managing paid advertising budgets.
Financial Health
StrongStrong · Hiring · 17% CAGR over 4y
Location
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Computed from 5 filingsProvides marketing communications and public relations services for B2B and deep technology companies, including enterprise software, cybersecurity, quantum, robotics, telecoms, space and green tech,…
Serves disruptive and emerging B2B technology companies, from startups to growth-stage firms, including enterprise software/SaaS, quantum, robotics, space, cybersecurity, telecoms and green tech…
Financial Health
HealthyHealthy · Hiring · 23% CAGR over 4y
Location
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Computed from 5 filingsProvides marketing and advertising services including brand development, creative design, digital marketing, campaign planning and analytics. Works with clients to develop branding, advertising…
Serves business clients seeking marketing support, including brand, advertising, design and digital buyers. Targets organisations needing integrated agency services rather than consumers, with no…
Financial Health
StableStable · -10% CAGR over 4y
Location
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Computed from 5 filingsProvides web development and digital agency services, including UX/UI design, ecommerce website development, digital strategy, system integrations, hosting, and digital marketing such as SEO, PPC,…
Serves UK businesses and brands across sectors, including ecommerce retailers, software companies, hospitality groups and property developers, typically marketing, digital and leadership teams.
Financial Health
StableStable · Hiring · 3% CAGR over 4y
Location
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Computed from 3 filingsProvides branding and creative services including brand strategy, brand identity development, advertising campaigns, packaging and editorial design, website design, film and animation, and digital…
Serves businesses, startups and public-sector organisations needing brand-led creative support, with examples spanning local government, healthcare, fintech, car finance and consumer brands.
Financial Health
StableStable · -9% CAGR over 2y
Location
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Computed from 5 filingsProvides public relations consultancy and digital marketing services, including media relations, broadcast PR and crisis communications. Works with organisations in sectors such as B2B technology,…
Serves B2B organisations in technology, cybersecurity, healthcare, fintech, education, recruitment, eCommerce and retail, typically marketing and communications leaders seeking agency support.
Financial Health
WeakWeak · 2% CAGR over 4y
Location
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Provides public relations and communications services including media relations, digital marketing, content creation, corporate communications, public affairs, and campaign strategy for technology,…
Serves B2B and consumer brands, corporates and organisations in technology, energy, built environment, financial services, fintech, health and healthtech, including clients needing UK or…
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Computed from 3 filingsProvides creative production services including brand strategy, graphic and digital design, website and app development, film and animation production, and planning and delivery of corporate events,…
Serves B2B marketing, communications and brand teams at corporate clients across sectors including healthcare, technology, imaging and professional services, plus organisations running events,…
Financial Health
DistressedDistressed · -18% CAGR over 2y
Location
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Computed from 5 filingsProvides contact centre and marketing support services for automotive and other sectors, including inbound and outbound call handling, sales and aftersales campaigns, website design and hosting,…
Serves B2B customers, mainly UK automotive businesses of all sizes, plus organisations in financial services and the public sector that need customer contact, digital marketing, CRM, training or…
Financial Health
StableStable · Hiring · 23% CAGR over 4y
Location
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Computed from 5 filingsProvides media planning and buying services for brands, managing advertising campaigns across channels such as TV and digital media. Develops media strategies, optimises campaigns, and supports…
Serves brand-side marketing teams at new and established businesses, including consumer brands in sectors such as fintech, beauty, sport, insurance and ecommerce.
Financial Health
StrongStrong · Hiring · 8% CAGR over 4y
Location
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Computed from 5 filingsProvides digital marketing and design services including website design and development, branding, software and IT solutions, online advertising, social media management, and website hosting,…
Serves B2B and public/third-sector organisations, including manufacturers, leisure trusts, museums, chambers of commerce, professional services firms, local growth bodies and international client…
Financial Health
HealthyHealthy · Hiring · 6% CAGR over 4y
Location
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Computed from 5 filingsProvides B2B content marketing and copywriting services, including writing, editing, proofreading, translation and localisation. Produces marketing and technical content such as articles, press…
Sells to B2B organisations needing marketing, communications and copywriting support, including firms expanding between the UK, Australia, Europe and Asia, and teams working with digital, web, design…
Financial Health
StableStable · -4% CAGR over 4y
Location
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Computed from 3 filingsProvides public relations, marketing and communications services for veterinary, animal health, agricultural and pet trade organisations, including content creation, copywriting, digital marketing,…
Serves B2B organisations in the veterinary, animal health, agriculture, pet trade and equine sectors, including veterinary suppliers, pet food brands, animal health start-ups and pet content…
Financial Health
HealthyHealthy · Hiring · 5% CAGR over 2y
Location
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Computed from 4 filingsProvides business and marketing consultancy services, including white‑label digital marketing solutions, creative design, and business strategy support. Also offers sales training, event…
Serves B2B clients, especially agencies and service providers targeting small and medium business clients, as well as SMEs needing marketing, sales and business consultancy support.
Financial Health
DistressedDistressed · Hiring · 5% CAGR over 3y
Location
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Provides marketing and communications services including creative campaign development, digital content, print production, retail displays, event materials and fulfilment. Works with brands to…
Serves B2B marketing and communications teams at brands and organisations in retail, FMCG, beauty, leisure, hospitality, online retail, education, transport and non-profit sectors.
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Computed from 3 filingsProvides communications and marketing services including brand strategy, messaging frameworks, go-to-market campaign planning, employer branding, and multimedia storytelling. Develops brand…
Serves B2B organisations and institutions, including financial services firms, asset managers, universities, scholarship foundations and Fortune 500 companies, typically senior marketing, ESG,…
Financial Health
DistressedDistressed · -17% CAGR over 2y
Location
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Computed from 5 filingsProvides web design and development services, including e‑commerce and WordPress websites, alongside search engine optimisation, PPC advertising, social media marketing, branding, and mobile app…
Serves businesses and organisations, including ecommerce retailers on Shopify, Magento, WooCommerce and OpenCart, local and national firms, healthcare and life insurance marketers, trade union…
Financial Health
StrongStrong · Growing, Hiring · 14% CAGR over 4y
Location
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Computed from 2 filingsProvides direct mail marketing services including campaign planning, print and mailing, customer acquisition and retention communications, billing and statements, and personalised mail packs. Also…
Serves B2B organisations and charities across sectors, including retail, automotive, housing, betting, ecommerce and fundraising teams seeking customer acquisition, retention, supporter…
Financial Health
StrongStrong · -9% CAGR over 2y
Location
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Computed from 5 filingsProvides creative and digital agency services including brand strategy and development, website and app design, digital experience design, augmented and mixed reality experiences, 3D visualisation,…
Serves large brands, enterprises and public-sector organisations across retail, finance, travel, infrastructure, education and technology, typically marketing, brand, digital and innovation teams…
Financial Health
HealthyHealthy · 0% CAGR over 5y
Location
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Computed from 5 filingsProvides creative communications and public relations services, developing brand campaigns, managing media relations, and producing content and digital communications strategies for commercial and…
Serves ambitious and innovative brands, primarily business marketing and communications teams seeking an external creative communications agency partner.
Financial Health
WeakWeak · -68% CAGR over 4y
Location
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Computed from 5 filingsProvides media planning and buying services for direct marketing campaigns across channels including direct mail, door drops, inserts, digital, press and out‑of‑home. Also offers data processing and…
Serves B2B and B2C organisations, including blue chip PLCs, agencies, mail order companies, retailers and charities in the UK and internationally.
Financial Health
WeakWeak · 0% CAGR over 4y
Location
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Computed from 5 filingsProvides brand strategy, advertising campaign development and creative services for businesses. Produces digital content, marketing communications, and immersive or in‑store retail experiences,…
Serves global businesses and brand or marketing teams across diverse sectors, including sportswear, outdoor apparel, automotive and retail, seeking agency support for brand, advertising, digital…
Financial Health
HealthyHealthy · Hiring · 6% CAGR over 4y
Location
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Computed from 3 filingsProvides branding, graphic design and digital agency services, including website design and development, e‑commerce development using Shopify and Umbraco, packaging design, digital strategy, and…
Serves B2B clients including international brands, blue-chip companies, theatre and entertainment organisations, property developers, sports clubs, and businesses seeking creative and digital agency…
Financial Health
StableStable · 0% CAGR over 2y
Location
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Computed from 4 filingsProvides web design and development services, building websites, web applications and back‑end systems. Also offers search engine optimisation, digital marketing, and ongoing technical support for…
Serves B2B clients, particularly businesses in legal and professional services, hotels and accommodation, e-commerce and retail, from the North East and across the UK.
Financial Health
StableStable · Hiring · 5% CAGR over 3y
Location
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Provides marketing services including campaign creation and activation, creative design, print production, retail display and in‑store marketing materials, digital content, events, and fulfilment and…
Sells to businesses and organisations needing marketing support, especially teams in retail, FMCG, beauty, leisure, hospitality, online retail, education, transportation and non-profit sectors.
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How Lead Forensics 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.
Lead Forensics 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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