Marketing Agency Companies Using Elfsight in the UK: 80 Active Firms (2026)
UK marketing agencies running third-party website widgets use embedded forms, reviews and conversion modules to support digital campaign delivery.
For agencies, embedded-widget adoption usually sits between web delivery, performance marketing and client-services teams: it lets them place forms, social proof, galleries and prompts on campaign sites without rebuilding templates each time. Running this kind of widget stack signals an agency with a live website estate, some direct-response work, and enough delivery discipline to maintain scripts, consent wording and conversion reporting. Buyers tend to be small and mid-market businesses rather than public-sector commissioners, with engagements shaped around retained marketing support, campaign landing pages and website iteration rather than standalone creative projects.
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80 active UK marketing agencies run this widget stack, making it a niche adoption pocket within agency web technology. The cohort has 819 reported employees in total, so the visible footprint tilts towards small operating teams rather than scaled network agencies. In the sector’s widget mix, the stack accounts for 9.9% of 812 visible implementations, behind alternatives at 39.0% and 21.4%. London has the clearest regional skew at 30.0%, followed by the South East at 13.8%, West Midlands at 12.5%, Yorkshire and The Humber at 11.3%, and the East Midlands at 10.0%.
Marketing agencies are not subject to a single sector licence, but campaign work still runs across overlapping rulebooks: the ICO covers data protection and PECR for direct marketing, the ASA enforces the CAP Code for advertisers, agencies and media, and the CMA plus trading standards can act on unfair-trading issues. Website widgets add a practical layer because forms, popups and review modules can collect personal data, set cookies, or present claims that clients expect agencies to operationalise. Procurement therefore tends to turn on consent wording, script governance, subcontractor terms and evidence that campaign claims can be substantiated.
Adoption appears likely to remain tied to agency website-maintenance cycles rather than pure software preference. Agencies that build and manage client sites tend to keep embeddable widgets when they reduce delivery effort, but governance pressure makes unmanaged script sprawl less comfortable over time. More mature firms may consolidate forms, consent capture and analytics into fewer approved tools, while smaller agencies continue to use prebuilt modules for speed and cost control. The cohort therefore looks more like a pragmatic layer in agency delivery stacks than a standalone market bet.
Adoption by company size
Adoption of Elfsight 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 Elfsight (58 detected). 1.1% of the 1,903 companies with 10–50 employees run Elfsight (21 detected). 0.7% of the 146 companies with over 50 employees run Elfsight (1 detected). That is a 0.6% gap between the over 50 employees and under 10 employees bands.
80
Active firms
2026
9.9%
Of detected Widgets share
UK marketing agency
6
Median headcount
Filed accounts
147
Verified contacts
Across this cohort
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Key facts
About 1% of the trading cohort reports turnover above £5M (1 of 80 firms) — the rest sits below that revenue band.
7% of the cohort was incorporated since 2022 (6 firms), so a sizeable share is in its first few filing cycles.
Among 812 marketing agencies with a detectable widget system, the widget used by this cohort ranks third by detected share at 9.9% (80), behind two larger systems at 39.0% (317) and 21.4% (174).
London accounts for 30.0% (24) of the cohort, followed by the South East at 13.8% (11) and the West Midlands at 12.5% (10).
Analytics tooling appears on 63.8% (51) of these agencies’ sites, while tag-management tooling appears on 43.8% (35).
Marketing agencies using website widgets need to account for ICO data-protection and PECR rules, ASA CAP Code standards, CMA and trading standards unfair-trading enforcement, and Ofcom rules on misuse of public electronic communications networks.
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 ad budgets spent online.
Widgets market share among UK Marketing Agency
What else do Elfsight-running Marketing Agency run?
Share of the 80 Elfsight-running UK companies where each technology was also detected. As of June 2026.
Where Elfsight 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
£459.1K
Median UK turnover
1.3%
Above £5M turnover
6
Incorporated since 2022
147 verified decision-maker contacts
across these 80 companies, with emails available in Firmbase. Filter by role, seniority and stack.
Top UK Marketing Agency using Elfsight
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 web design and development and digital marketing services for service-based businesses, including search engine optimisation, pay-per-click advertising, conversion rate optimisation, email…
Serves small and medium-sized service-based businesses, including home services firms, medical clinics and business services providers seeking more leads and commercial clients.
Financial Health
StableStable · 0% CAGR over 2y
Location
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Computed from 3 filingsProvides web design and digital marketing services, including SEO, PPC campaign management and digital PR. Also develops bespoke software, mobile apps and custom GPT tools, and offers digital…
Serves businesses across the UK and internationally that need to generate qualified enquiries and manage digital growth, including organisations seeking joined-up support for websites, search…
Financial Health
HealthyHealthy · 0% CAGR over 2y
Location
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Computed from 5 filingsProvides digital marketing and web development services including search engine optimisation, pay‑per‑click advertising management, website design, custom web and e‑commerce development, and hosting…
Serves UK businesses and organisations needing digital agency support, including SMEs and mid-market clients in ecommerce, property, telecoms, horticulture, healthcare/optics and charities.
Financial Health
HealthyHealthy · -2% CAGR over 4y
Location
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Computed from 5 filingsProvides digital marketing services including media strategy, paid search and social advertising, programmatic media buying, SEO and conversion optimisation, creative production, and marketing data…
Serves businesses, including B2B companies, e-commerce brands, retailers and app-based businesses, targeting marketing teams that need media, creative, SEO, CRO, data and analytics support.
Financial Health
HealthyHealthy · Hiring · 6% CAGR over 4y
Location
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Computed from 5 filingsProvides web design and development services including UX design, ecommerce builds, CMS and Shopify development, and custom software and app development. Also delivers digital marketing services such…
Serves B2B organisations, including law firms, property businesses, health tech companies, ecommerce brands and other UK businesses with marketing, ecommerce or digital teams.
Financial Health
StableStable · -3% CAGR over 4y
Location
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Computed from 5 filingsProvides HubSpot implementation and consultancy services focused on revenue operations. Advises on sales, marketing and customer success processes, CRM configuration, marketing technology and…
Serves B2B organisations across the UK seeking HubSpot, RevOps and growth support, particularly sales, marketing and customer success teams, leadership and under-resourced commercial teams focused on…
Financial Health
WeakWeak · Hiring · 7% CAGR over 4y
Location
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Computed from 5 filingsProvides web design and bespoke WordPress development, branding, and digital marketing services, including SEO, PPC advertising, content marketing and conversion rate optimisation, plus consultancy…
Serves businesses, charities and third-sector organisations, especially arts and culture venues, manufacturers, education providers and health/social care organisations, with a focus on B2B…
Financial Health
StrongStrong · Growing, Hiring · 7% CAGR over 4y
Location
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Computed from 3 filingsProvides B2B marketing services for technology companies, including inbound and outbound marketing campaigns, digital marketing, content creation, website design and development, and support for…
Serves B2B technology companies, targeting marketing leaders, demand generation, field marketing and partner/alliance teams that need agency support for campaigns across UK and EMEA markets.
Financial Health
StrongStrong · Hiring · 12% CAGR over 2y
Location
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Computed from 3 filingsProvides digital marketing and web design services including search engine optimisation (SEO), pay‑per‑click advertising, social media marketing, branding, ecommerce website development, and digital…
Serves startups to blue-chip organisations locally and nationally, including ecommerce retailers, education providers, galleries, consultancies and multi-academy trusts.
Financial Health
StrongStrong · Growing, Hiring · 10% CAGR over 2y
Location
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Computed from 5 filingsProvides digital marketing services including website design and development, search engine optimisation (SEO), Google Ads pay‑per‑click campaign management, and digital marketing strategy. Works…
Serves UK businesses, especially professional services firms in Milton Keynes and surrounding areas, targeting owners and marketing teams seeking measurable customer acquisition.
Financial Health
HealthyHealthy · Hiring · 7% CAGR over 4y
Location
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Computed from 3 filingsProvides B2B digital marketing services including brand strategy, demand generation campaigns, SEO and conversion optimisation, and website design and development. Works with businesses and…
Serves medium to large B2B and not-for-profit organisations, including healthcare, technology, charity, manufacturing and construction clients with national or international markets.
Financial Health
StrongStrong · Growing · 0% CAGR over 2y
Location
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Computed from 5 filingsProvides digital marketing services for law firms, including search engine optimisation, pay‑per‑click advertising, web design, branding, content marketing and lead generation, using data and AI…
Serves B2B clients in the legal sector, targeting small and medium-sized law firms and practices in commercial, criminal, employment, personal injury, private client and family law.
Financial Health
WeakWeak · -68% CAGR over 4y
Location
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Computed from 3 filingsProvides marketing and design services including website design and development, branding, graphic design, print design and production, social media management, SEO, online advertising, public…
Serves SMEs in the North of Scotland seeking external marketing support, including business owners needing branding, websites, print, social media, lead generation and account management.
Financial Health
StableStable · Hiring · 18% CAGR over 2y
Location
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Computed from 3 filingsProvides digital marketing services including search engine optimisation (SEO), pay‑per‑click advertising management, website design and development, social media management, digital PR campaigns,…
Serves SMEs and owner-managed businesses seeking outsourced marketing support, including ecommerce, healthcare, bridal, leisure, logistics, construction and land services clients, with an Essex focus.
Financial Health
StableStable · Hiring · 58% CAGR over 2y
Location
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Computed from 5 filingsProvides B2B marketing services for manufacturing, engineering, industrial, and logistics sectors, including marketing strategy, brand positioning, digital marketing, website design and development,…
Serves B2B companies in manufacturing, engineering, industrial and logistics sectors, including firms selling technical products, supply chain technology and materials handling equipment.
Financial Health
StableStable · -2% CAGR over 4y
Location
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Computed from 5 filingsProvides branding, website design and development, digital marketing, SEO, PPC, print design, and advertising services. Works with businesses to plan marketing strategies, create visual identities,…
Sells to businesses needing outsourced marketing support, especially SMEs seeking branding, web and lead generation help. Serves client teams across sectors including dental, industrial, safety and…
Financial Health
StableStable
Location
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Computed from 3 filingsProvides creative marketing and communications services including campaign development, branding, website design and development, event management, print production, and video production. Delivers…
Serves businesses and organisations of all sizes, from local companies to large brands, including marketing and commercial teams needing support for campaigns, events and communications.
Financial Health
DistressedDistressed · -18% CAGR over 2y
Location
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Computed from 5 filingsProvides ecommerce consultancy and digital marketing services including PPC and paid social advertising, search engine optimisation, email and affiliate marketing, Shopify ecommerce website builds,…
Serves small, medium and large eCommerce businesses and retail brands seeking support with online sales growth, digital marketing, site builds and international expansion.
Financial Health
HealthyHealthy · -5% CAGR over 4y
Location
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Provides digital marketing services including website design and development, search engine optimisation (SEO), pay‑per‑click advertising management, social media marketing, branding, and online…
Serves small businesses and SMEs across varied sectors seeking outsourced digital marketing support, including web design, SEO, PPC, social media, branding and business listings.
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Computed from 5 filingsProvides web design and development, search engine optimisation, and digital marketing services. Also offers branding and graphic design, e‑commerce website development, domain hosting, print…
Serves UK businesses, from emerging firms to established brands, across retail, hospitality, construction, IT, healthcare and e-commerce, typically marketing or business owners seeking agency support…
Financial Health
HealthyHealthy · 0% CAGR over 4y
Location
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Computed from 5 filingsProvides website design and web development services including coding, custom apps and plugins, API integration, website management, content creation, email marketing, and social media support for…
Serves SMEs, startups and corporate clients, including ecommerce businesses and local service providers, seeking outsourced support for their online presence across the UK and beyond.
Financial Health
StrongStrong · Growing, Hiring · 26% CAGR over 4y
Location
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Provides digital marketing services for small and medium-sized businesses, including website design and development, branding, pay‑per‑click advertising management, search engine optimisation, social…
Serves small and growing UK businesses, including owners and marketing teams in sectors such as retail, hospitality, logistics and mobility, looking to generate leads and online sales through…
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Computed from 5 filingsProvides web design and development, branding and logo design, identity creation, copywriting and social media services. Also develops design and software solutions for estate agents and offers…
Serves B2B clients including ambitious brands, local businesses and estate agencies, especially organisations needing website, identity, marketing content or property-sector software support.
Financial Health
HealthyHealthy · Hiring · 11% CAGR over 4y
Location
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Computed from 5 filingsProvides digital marketing and lead generation services, creating and managing Facebook and Google advertising campaigns and advising on digital strategy to generate calls and leads for webinars,…
Serves businesses and agencies selling webinars, lead magnets, high-ticket courses and membership sites, including clients seeking white-label digital advertising support.
Financial Health
StableStable · Hiring · 19% CAGR over 4y
Location
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Computed from 2 filingsProvides marketing and lead generation services for small businesses, including outbound telesales, social media management, email campaigns, SEO, website design, and digital advertising. Also offers…
Serves UK small businesses and SMEs across sectors such as hospitality, retail, leisure, recruitment and commercial services, typically owners, sales directors and managers seeking outsourced lead…
Financial Health
DistressedDistressed · 0% CAGR over 1y
Location
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Computed from 5 filingsProvides web design and website development services for businesses, alongside digital marketing including search engine optimisation (SEO), Google Ads management, and social media advertising.…
Serves small business owners and growing companies, mainly local B2B customers, that need websites, ecommerce presence, search visibility, and digital marketing support.
Financial Health
StableStable · Hiring · 14% CAGR over 4y
Location
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Computed from 3 filingsProvides international digital marketing services including paid media management, search engine optimisation, content creation, conversion rate optimisation, social media and PR. Develops…
Serves B2B marketing and digital teams at brands of all sizes seeking growth in international markets, including retail businesses, with buyers such as marketing directors, heads of marketing and…
Financial Health
DistressedDistressed · -1% CAGR over 2y
Location
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Computed from 5 filingsProvides public relations and marketing services, including media relations, editorial content creation, brand strategy, direct marketing, social media management, and media planning. Works with…
Serves B2B and B2C brands in dentistry, design, veterinary, aesthetics, pharmaceuticals, renewable energy, interiors, hospitality, travel and architecture seeking PR and marketing support.
Financial Health
StableStable · Hiring · 12% CAGR over 4y
Location
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Computed from 5 filingsProvides search engine optimisation and digital marketing services, including ecommerce SEO, Shopify and Magento SEO, Google Ads and PPC management, SEO consulting, and digital PR. Focuses on…
Serves ecommerce brands and online retailers seeking SEO, PPC and AI search visibility, including Shopify, Magento and WooCommerce merchants, primarily marketing teams and founders.
Financial Health
StrongStrong · Growing, Hiring · 32% CAGR over 4y
Location
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Computed from 3 filingsProvides website design and development services including WordPress and e‑commerce sites, alongside digital marketing such as SEO, Google Ads, social media advertising, email marketing and…
Serves small and established businesses, e-commerce brands and charities needing digital presence and marketing support, including organisations seeking sales, enquiries, awareness or donor…
Financial Health
StrongStrong · Growing, Hiring · 15% CAGR over 2y
Location
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Computed from 3 filingsProvides web design and development services along with search engine optimisation, social media management, email marketing and content creation. Also offers branding, logo and print design, video…
Serves businesses in Eastbourne, East Sussex and beyond that need website, SEO, social media, branding, print and online marketing support, including firms seeking affordable monthly digital…
Financial Health
WeakWeak · 0% CAGR over 2y
Location
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Computed from 3 filingsProvides marketing services including marketing strategy, social media management, branding and personal branding, videography, graphic design, and website design. Works with businesses to plan…
Targets SMEs and larger organisations, including B2B product firms, education providers, innovation centres and technical businesses, working with founders, managing directors and marketing teams.
Financial Health
StrongStrong · Growing, Hiring · 18% CAGR over 2y
Location
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Computed from 3 filingsProvides marketing and demand‑generation services, including brand strategy, campaign development, awareness campaigns, and lead generation. Uses a proprietary platform to capture and manage leads…
Serves B2B marketing and growth teams at large technology, fintech, financial services and manufacturing companies, with examples spanning IT software, hardware, networks and marine sectors.
Financial Health
DistressedDistressed
Location
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Computed from 5 filingsProvides website design and development services for businesses, including ecommerce website setup. Also offers digital marketing, graphic design, Google Ads management, and Microsoft 365 support,…
Serves small and medium-sized businesses in and around Nottingham, including trades, professional services, hospitality, healthcare and ecommerce retailers.
Financial Health
WeakWeak · -69% CAGR over 4y
Location
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Computed from 5 filingsProvides web design and development services, creating custom and small‑business websites and e‑commerce sites. Also offers website hosting, maintenance and repair, search engine optimisation, PPC…
Serves businesses, schools, charities and other organisations, with a focus on startups, small business owners and firms needing custom or e-commerce websites. Also targets marketing managers and…
Financial Health
StrongStrong · Growing, Hiring · 27% CAGR over 4y
Location
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Computed from 5 filingsProvides web design and digital marketing services for businesses, including bespoke website development, e‑commerce site creation, branding, search engine optimisation, pay‑per‑click advertising and…
Serves small to medium-sized UK businesses seeking web design, ecommerce and digital marketing support, including local trades, construction firms, training providers and service businesses.
Financial Health
HealthyHealthy · -3% CAGR over 4y
Location
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Computed from 3 filingsProvides digital marketing services including search engine optimisation, website design and development, social media management, and paid advertising campaign management. Also builds SEO‑optimised…
Serves B2B clients across the UK, especially small and medium-sized businesses, FMB-affiliated builders and trade companies, targeting business owners and marketing teams seeking online customer…
Financial Health
HealthyHealthy · Hiring · 123% CAGR over 2y
Location
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Computed from 5 filingsProvides web design and development services, branding and digital design, ecommerce website builds, and digital marketing including SEO. Also develops mobile apps and custom software for businesses…
Serves B2B clients from start-ups to global brands across varied industries, including dental practices, ecommerce businesses, housing developers and hospitality or property brands seeking agency…
Financial Health
StableStable · Hiring · 16% CAGR over 4y
Location
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Computed from 5 filingsProvides digital marketing services for e-commerce brands, including pay‑per‑click advertising, paid social media campaigns, and affiliate programme management. Offers strategy, campaign management,…
Serves ambitious B2C e-commerce and retail brands, from smaller online stores to larger consumer brands, including digital marketing teams targeting UK, EU and international growth.
Financial Health
WeakWeak · Hiring · 2% CAGR over 4y
Location
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Computed from 5 filingsProvides graphic design and branding services including logo design, website design and development, print design, photography and videography, and digital marketing such as SEO and online promotion…
Serves SMEs, brands and local organisations seeking outsourced creative and digital marketing support, including clients in leisure, sports coaching, retail schoolwear and hospitality.
Financial Health
WeakWeak · -55% CAGR over 4y
Location
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Computed from 5 filingsProvides graphic design, branding and digital media services. Designs and develops WordPress websites, produces animated explainer videos and marketing graphics, and creates visual identities,…
Serves businesses, public sector bodies, universities, healthcare organisations, cultural venues and events across Wales and the UK, typically teams commissioning brand, web, graphic design or…
Financial Health
StableStable · 0% CAGR over 4y
Location
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Computed from 3 filingsProvides public relations and strategic communications services, including media relations, brand storytelling, digital and influencer campaigns, and corporate communications, helping companies…
Serves purpose-driven brands and organisations, including B2B tech, finance, consumer, nonprofit and impact-led clients across the UK, Europe, Singapore and the US.
Financial Health
DistressedDistressed · -18% CAGR over 2y
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Computed from 5 filingsDesigns and develops Shopify e‑commerce websites for jewellery, watch and luxury retail brands. Provides website support, search engine optimisation, email marketing campaigns, and custom Shopify…
Targets B2C retail businesses in jewellery, watches and luxury lifestyle, especially jewellers, diamond retailers and luxury brands with online stores and physical retail operations.
Financial Health
StrongStrong · Growing, Hiring · 24% CAGR over 4y
Location
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Computed from 5 filingsDesigns and develops bespoke websites for businesses, including user interface design, site build, and launch. Provides branding services and search engine optimisation, managing projects from…
Serves businesses seeking web design, branding and SEO, including organisations in private medical, tech, hospitality, marine, financial, luxury and construction. Targets companies across Hampshire…
Financial Health
HealthyHealthy · Hiring · 10% CAGR over 6y
Location
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Computed from 4 filingsProvides website design and development services, including e‑commerce websites, search engine optimisation, logo and brand design, and content writing. Also offers digital marketing support and…
Serves UK-wide businesses across sectors, especially SMEs and owner-managed firms such as contractors, caterers, retailers and e-commerce businesses seeking external digital support.
Financial Health
StableStable · -16% CAGR over 3y
Location
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Computed from 5 filingsProvides B2B lead generation services for software and hardware vendors, using content syndication, email and web campaigns to reach technology decision‑makers. Manages campaign planning, copy…
Serves B2B software and hardware companies, particularly marketing teams seeking lead generation campaigns that reach business decision-makers across EMEA, APAC, LATAM and North America.
Financial Health
HealthyHealthy · -52% CAGR over 4y
Location
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Computed from 5 filingsProvides marketing and consultancy services for franchise businesses, including franchisee recruitment campaigns, franchise resale support, customer marketing, and strategic marketing planning aimed…
Serves B2B franchisors, franchise network owners, and franchise development or marketing teams across multiple sectors, with some focus on franchise owners considering resales.
Financial Health
StrongStrong · Hiring · 38% CAGR over 4y
Location
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Computed from 5 filingsProvides digital marketing services focused on social media advertising for e‑commerce brands. Produces user‑generated content ads, brand-style video and image creatives, graphics and GIFs, and…
Serves B2B clients, primarily DTC and eCommerce brands seeking paid social growth, including early-stage brands scaling from launch and established 6–8 figure online retailers.
Financial Health
StrongStrong · Hiring · 29% CAGR over 4y
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Computed from 4 filingsProvides B2B lead generation and demand generation services using AI‑driven data analysis, predictive personalisation and account‑based digital advertising. Combines proprietary technology with…
Serves B2B sales and marketing teams, particularly large technology companies, seeking support with lead generation, demand generation and account-based customer acquisition.
Financial Health
StrongStrong · Hiring · 17% CAGR over 3y
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Computed from 5 filingsProvides marketing and design services including content marketing, marketing strategy, social media management, email marketing campaigns, branding development, digital and print design, animated…
Serves B2B and public sector clients, including professional services firms, sports and events organisations, and local government bodies across a range of industries.
Financial Health
StableStable · -66% CAGR over 4y
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How Elfsight 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.
Elfsight 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 marketing agency companies use Elfsight?
What share of UK marketing agency companies run Elfsight?
How is Elfsight usage detected?
What size marketing agency companies use Elfsight in the UK?
What do Elfsight-running marketing agency companies also run?
Can I get contact details for these companies?
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