Marketing Agency Companies Using SEOmatic in the UK: 53 Active Firms (2026)
Marketing agencies running specialist SEO tooling build search-led campaigns, analytics and content workflows for clients in the UK.
For marketing agencies, specialist SEO tooling sits close to production workflow rather than at the edge of the martech stack. It helps teams manage page metadata, schema, canonical rules, sitemaps and content templates inside the website build, so adoption usually points to an agency with technical SEO capability as well as campaign planning. The buyer tends to be a founder, digital director or head of search, with delivery owned by content, analytics and web teams. Companies running this kind of stack are typically selling retained search and content work to owner-managed and mid-market clients, where implementation quality and reporting cadence matter alongside creative output.
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The UK adoption picture is small and relatively concentrated: 53 actively trading marketing agencies run this specialist SEO stack. Reported employment totals 248 people across the employers that publish headcount, giving the cohort a lean delivery profile rather than an enterprise-agency profile. Within marketing agencies, the system ranks fourth for detected SEO-tool share, at 2.2% of a 2,404-agency comparison set. Regional skew is clear: London accounts for 39.6% of adopters, followed by the South West at 15.1%, the South East at 13.2%, the East of England at 9.4% and the North West at 7.5%. The pattern looks like selective adoption among web-build and search-led shops, not a default agency stack.
Campaign work sits across several UK regimes rather than a dedicated agency licence. The ICO regulates data protection and PECR duties around tracking, consent and direct marketing, while Ofcom has a role where public electronic communications networks are misused. The CMA and trading standards can act on unfair-trading issues, and the ASA applies the CAP Code to advertisers, agencies and media. For agencies running specialist SEO systems, the practical burden is usually less about formal authorisation and more about auditable consent, substantiated claims, client sign-off and clear separation between organic search advice, paid promotion and content produced for commercial gain.
Adoption appears likely to remain selective. Agencies that sell technical website builds alongside search retainers have a clearer reason to keep specialist optimisation tools in the content-management layer, especially where structured metadata, multilingual pages or templated content are part of delivery. Smaller campaign agencies tend to default to more common plug-ins or whatever their web platform already bundles, which limits migration pressure. Consolidation among marketing stacks may pull some workflow into analytics, consent and reporting suites, but specialist SEO tooling still has a place where agencies want implementation control rather than advice-only retainers.
Adoption by company size
Adoption of SEOmatic varies by company size across the trading UK marketing agency companies in this cohort. 0.1% of the 54,246 companies with under 10 employees run SEOmatic (34 detected). 1% of the 1,903 companies with 10–50 employees run SEOmatic (19 detected). 0% of the 146 companies with over 50 employees run SEOmatic (0 detected). That is a 0.1% gap between the over 50 employees and under 10 employees bands.
53
Active firms
2026
2.2%
Of detected SEO share
UK marketing agency
6
Median headcount
Filed accounts
107
Verified contacts
Across this cohort
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Key facts
About 1% of the trading cohort reports turnover above £5M (1 of 53 firms) — the rest sits below that revenue band.
1% of the cohort was incorporated since 2022 (1 firms), so a sizeable share is in its first few filing cycles.
Among marketing agencies with a detectable SEO system, the profiled tool accounts for 2.2% (53) of installations, behind alternatives at 77.3% (1,859), 12.6% (303) and 7.2% (174).
All 53 agencies also show a specialist content-management platform alongside the SEO tool; 50.9% (27) show an edge-network layer, 47.2% (25) web analytics and 45.3% (24) tag management.
London accounts for 39.6% (21) of the cohort by registered ITL1 region, followed by the South West at 15.1% (8) and the South East at 13.2% (7).
UK ad spend increased by 10.4% in 2024 to £42.6 billion, with online formats growing 13.2% and £4 in every £5 of advertising budgets spent online.
Marketing agency campaign work can fall under the ICO for data protection and PECR, the ASA and CAP Code for advertising standards, the CMA and trading standards for unfair-trading rules, and Ofcom where public electronic communications networks are misused.
SEO market share among UK Marketing Agency
Share of the 2,404 UK Marketing Agency with a detectable system. As of June 2026.
What else do SEOmatic-running Marketing Agency run?
Share of the 53 SEOmatic-running UK companies where each technology was also detected. As of June 2026.
Where SEOmatic 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.
6
Median headcount
£499.8K
Median UK turnover
1.9%
Above £5M turnover
1
Incorporated since 2022
107 verified decision-maker contacts
across these 53 companies, with emails available in Firmbase. Filter by role, seniority and stack.
Top UK Marketing Agency using SEOmatic
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 3 filingsProvides digital marketing services focused on search marketing, including search engine optimisation, technical SEO, keyword research, content marketing, pay‑per‑click advertising management, paid…
Serves businesses and consumer brands that rely on online visibility and e-commerce sales, including retailers and hair and beauty companies, in the UK and US markets.
Financial Health
WeakWeak · Hiring · 7% CAGR over 2y
Location
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Financial sub-scores
Computed from 5 filingsProvides search‑focused content marketing services including SEO strategy, onsite optimisation, digital PR, social media campaigns, and data insights, creating and distributing online content to…
Serves marketing and growth teams at consumer brands and B2B companies, including retail, fashion, beauty, travel, pharmacy, car rental, eSIM, payments and trade sectors across the UK, US and EU.
Financial Health
DistressedDistressed · -66% CAGR over 4y
Location
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Financial sub-scores
Computed from 5 filingsProvides digital marketing and web development services including website design, Shopify store development, search engine optimisation, paid media advertising, email marketing automation, and social…
Sells to B2B and B2C brands seeking digital marketing, website and eCommerce support, including Shopify retailers and organisations in automotive, food, events and consumer retail sectors.
Financial Health
StableStable · Hiring · 14% CAGR over 4y
Location
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Computed from 5 filingsProvides performance marketing services including paid search and paid social advertising, ecommerce ad management, performance creative, and conversion rate optimisation. Also delivers landing page…
Serves B2B and consumer-facing businesses, particularly marketing teams at ecommerce, digital, marketplace and growth-focused brands that need a strategic performance marketing partner.
Financial Health
StrongStrong · Growing, Hiring · 25% CAGR over 4y
Location
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Computed from 5 filingsProvides digital marketing, web design and web development services. Specialises in Craft CMS website and e‑commerce development, hosting and maintenance, and delivers SEO, paid media, content…
Serves B2B organisations and in-house marketing teams, particularly those using or adopting Craft CMS, across sectors such as sport, biotech, energy, live events and professional services.
Financial Health
StrongStrong · Hiring · 11% CAGR over 4y
Location
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Computed from 3 filingsProvides digital and creative marketing services including advertising campaign development, brand design, media planning and buying, search engine optimisation, and paid digital advertising…
Serves B2B brands and organisations in travel and tourism, home and interiors, and the silver market, including attractions, holiday companies, wineries, manufacturers and consumer-facing brands.
Financial Health
DistressedDistressed · 4% CAGR over 2y
Location
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Computed from 5 filingsProvides Shopify ecommerce services including website development, UX design, search engine optimisation, conversion rate optimisation, site migrations, and landing page creation, helping brands…
Serves design-led ecommerce and DTC retail brands using Shopify, particularly teams responsible for online store performance, UX and growth. Targets brands seeking agency support for commercially…
Financial Health
HealthyHealthy · -16% CAGR over 4y
Location
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Computed from 5 filingsProvides social media marketing services including social strategy, community management, content creation, paid social and search advertising, influencer marketing, and creative production. Plans…
Sells to ambitious consumer and lifestyle brands, and their CMOs or marketing teams, that rely on social, paid media, creative content and influencer channels to grow communities, revenue and…
Financial Health
StrongStrong · Growing, Hiring · 136% CAGR over 4y
Location
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Computed from 5 filingsProvides branding, design and digital development services, including website and mobile app development, e‑commerce builds, UX design, content planning, SEO/SEM and analytics. Also offers marketing,…
Serves B2B and public-sector clients across varied sectors, including NHS trusts and healthcare bodies, finance brokers, environmental organisations, security firms, consumer brands and product-led…
Financial Health
StrongStrong · Growing, Hiring · 9% CAGR over 4y
Location
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Computed from 4 filingsProvides public relations and marketing services including digital marketing, video production, graphic design, web development, SEO, influencer marketing, crisis communications, email campaigns, and…
Serves B2B companies and brands seeking support with audience engagement, product or service launches, geographic or sector expansion, investor-facing opportunities, public announcements, and brand…
Financial Health
StrongStrong · Hiring · 19% CAGR over 3y
Location
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Computed from 5 filingsProvides digital marketing services including strategy and analysis, website design and development, e‑commerce builds, digital campaigns, and content publishing. Works with organisations to plan,…
Sells to businesses seeking digital marketing, web and publishing support, including marketing teams and brands. Serves clients across sectors shown in case studies such as recruitment, publishing,…
Financial Health
StableStable · -13% CAGR over 4y
Location
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Computed from 3 filingsProvides website design and development services, including user research and planning, bespoke design, responsive website builds, search engine optimisation and digital marketing promotion, along…
Serves businesses seeking digital presence support, including professional services firms such as law practices, with content indicating relevance to financial services and automotive sectors.
Financial Health
DistressedDistressed · -11% CAGR over 2y
Location
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Computed from 5 filingsProvides e‑commerce development and consultancy services, including Magento/Adobe Commerce and Shopify implementation, website design and UX, systems integration, hosting, technical support, and…
Serves B2B, B2C and D2C businesses, including retailers and brands that sell online and need ecommerce platforms, support, hosting, digital marketing, UX and integration services.
Financial Health
DistressedDistressed · -10% CAGR over 4y
Location
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Computed from 5 filingsProvides web design and development services, building custom websites and digital platforms with UX design, content and system integrations. Also delivers digital marketing and SEO strategies to…
Serves B2B and public-sector organisations, especially arts, culture, tourism, travel and attraction brands, targeting marketing and digital teams that need customer-facing websites and online…
Financial Health
StableStable · -1% CAGR over 6y
Location
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Computed from 5 filingsProvides brand strategy, visual identity design, website design and development, and digital marketing services. Works with businesses on branding projects, website creation, and integrated marketing…
Serves B2B organisations and brand/marketing leaders in finance, manufacturing, property, place-making and professional services, including large enterprises, transport operators and property…
Financial Health
WeakWeak · -30% CAGR over 4y
Location
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Computed from 3 filingsProvides web design and development services including branding, website builds using Craft CMS, Shopify e‑commerce development, and search engine optimisation. Works with businesses to design, build…
Serves businesses of any size and sector, including ecommerce retailers, consultancies, talent groups and personal brands seeking an agency partner for their digital presence.
Financial Health
WeakWeak · -4% CAGR over 2y
Location
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Computed from 5 filingsProvides website development, digital design and branding services, digital marketing, and technology strategy. Develops and supports custom web platforms and applications, and offers managed hosting…
Serves B2B organisations across aerospace and aviation, engineering and manufacturing, finance, legal and professional services, membership bodies, retail and eCommerce, science and health, training,…
Financial Health
HealthyHealthy · 0% CAGR over 4y
Location
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Provides graphic design and creative agency services including brand naming and identity development, brand guidelines, advertising and marketing collateral, digital strategy, website design and…
Serves small and large businesses needing brand, communications and digital support, including corporate marketing teams and organisations with CRM-enabled websites.
Financial Health
N/AN/A
Location
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Computed from 5 filingsProvides B2B communications and content marketing services, including PR, thought leadership development and insight‑led content strategy. Also delivers accredited sustainability and carbon literacy…
Serves B2B organisations, especially sales and marketing teams, seeking support with communications, thought leadership, content strategy and sustainability messaging.
Financial Health
WeakWeak · -11% CAGR over 4y
Location
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Computed from 5 filingsProvides branding and design services including brand strategy, naming, visual identity, graphic design, and brand architecture. Also delivers website design, digital marketing campaigns, and support…
Sells to businesses and organisations needing branding support, especially in highly regulated sectors. Targets startups, scaling companies, and established local or global brands, including housing…
Financial Health
WeakWeak · -2% CAGR over 4y
Location
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How SEOmatic 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.
SEOmatic 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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