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AdTech Companies in the UK: 200+ Active Firms (2026)
AdTech companies in the UK build advertising software, data platforms and campaign tools for brands, agencies and publishers.
Buying decisions tend to sit with marketing, media, revenue operations and publisher commercial teams, rather than a single central IT owner. The customer mix runs from brands and agencies to media owners and publishers, with engagements ranging from low-touch platform subscriptions for specialist teams to larger managed-service or usage-based contracts tied to campaign volume. The more investable end of the market usually connects directly to campaign execution, audience data, measurement, creative optimisation or advertising marketplaces.
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The UK cohort contains 240 actively trading AdTech firms, making it a relatively narrow software category rather than a broad horizontal one. Reported employment totals 2,068 people, which points to a market made up largely of specialist teams and mid-sized operators rather than very large domestic platforms. Revenue concentration is visible as well: 30 firms report turnover above £5M, so the upper end of the list is a distinct minority rather than the norm.
Operating constraints are set more by privacy, consent and platform access than by a dedicated AdTech licence. Audience profiling, identity resolution, attribution and real-time bidding workflows tend to bring data-protection and electronic-communications obligations into normal product design. Publishers and agencies also carry their own contractual controls over brand safety, placement transparency and reporting quality, so vendors often sell into procurement processes that look closer to media governance than ordinary software buying.
AdTech appears likely to remain a buyer-budget-sensitive software category: spend follows campaign cycles, agency mandates and publisher monetisation pressure. Specialist vendors with defensible measurement, workflow depth or publisher-side access tend to look less exposed than those built mainly around commoditised audience reach. The cohort also has a visible scale-up scarcity, which may favour consolidation, partnerships and managed-service overlays over pure self-serve platform expansion. Privacy pressure has been a continuing constraint, not a passing compliance exercise.
240
Active firms
2026
30
Above £5M
Companies with revenue above £5M
33
Recent incorporations
Incorporated since 2022
Key facts
About 12% of the trading cohort reports turnover above £5M (30 of 240 firms) — the rest sits below that revenue band.
13% of the cohort was incorporated since 2022 (33 firms), so a sizeable share is in its first few filing cycles.
AdTech providers sell into brands, agencies and publishers, so the buyer base is broader than media agencies alone.
Common products include audience tools, campaign management systems, publisher monetisation software and measurement platforms.
Publisher-facing systems often connect campaign workflow, targeting, reporting and yield management in the same sales conversation.
Business models can mix software licensing, managed-service work and pass-through advertising spend, which makes reported revenue less comparable across firms.
Top UK AdTech companies
VERVE MARKETING LONDON LTD
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsDevelops advertising technology that connects advertisers with publishers across mobile apps, connected TV and other digital channels. Provides AI‑driven tools for campaign targeting and measurement,…
Serves B2B digital advertising buyers and sellers worldwide, including brands, media agencies, CPG/shopper marketers, app marketers, publishers, mobile app developers, and DSPs.
Financial Health
StableStable · Hiring · 14% CAGR over 2y
Location
SMARTLY.IO SOLUTIONS LTD
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsDevelops an AI-powered advertising platform for creating, managing, and optimizing digital marketing campaigns across social media, video, connected TV, and open web channels, with tools for creative…
Serves B2B marketing organizations, advertising agencies, and in-house brand, performance and creative teams running cross-channel digital campaigns across social, CTV, open web, video and…
Financial Health
HealthyHealthy · Hiring · 45% CAGR over 2y
Location
StackAdapt UK Limited
Trajectory
5y · 2022–NowFinancial sub-scores
Computed from 5 filingsProvides a programmatic advertising platform that enables agencies and brands to plan, buy, and optimise digital ad campaigns. Offers AI‑driven targeting, campaign management and analytics across…
Serves advertising agencies, brands and in-house digital marketing teams running programmatic campaigns, across sectors including B2B, political, retail, travel, healthcare, finance and regulated…
Financial Health
StrongStrong · Growing, Hiring · 52% CAGR over 4y
Location
Azerion UK Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsDevelops and operates digital advertising technology platforms that connect advertisers with online publishers. Provides demand‑side and supply‑side platforms, ad formats, audience data tools, and…
Serves B2B customers: brands and advertising agencies seeking omnichannel digital advertising, plus digital publishers and game/media owners monetising inventory, across Europe and global markets.
Financial Health
StrongStrong · Hiring · 22% CAGR over 4y
Location
Equativ
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsDevelops and operates a digital advertising technology platform that enables advertisers, publishers and retailers to manage programmatic campaigns, deliver and optimise ads across web, video and…
Serves global B2B customers in digital advertising: advertisers, media agencies, publishers, broadcasters/CTV providers and retailers running retail media or programmatic ad operations.
Financial Health
DistressedDistressed · -15% CAGR over 2y
Location
Operates a programmatic advertising supply‑side platform and ad exchange that enables digital publishers to sell advertising inventory and allows advertisers to buy targeted ad placements across web,…
Serves B2B buyers and sellers in programmatic advertising, including digital publishers, advertisers, agencies, brands and data partners seeking omnichannel ad inventory and audience targeting across…
Location
Onetag Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides a programmatic advertising platform that curates and filters ad inventory for demand‑side platforms. Uses AI and contextual data to shape traffic, optimise bidding, and connect advertisers…
Serves B2B programmatic advertising buyers, including marketers, advertisers, agencies and DSP users, as well as digital publishers in the open internet ecosystem.
Financial Health
StrongStrong · Growing, Hiring · 82% CAGR over 4y
Location
Trajectory
4y · 2020–NowFinancial sub-scores
Computed from 4 filingsDevelops and operates an omnichannel demand‑side advertising platform that enables brands and agencies to plan, buy and measure digital advertising campaigns. Uses mobile app and location‑based data…
Serves B2B customers: brands, advertisers and media agencies managing omnichannel digital campaigns, especially marketing and media-buying teams focused on privacy-first audience activation and…
Financial Health
HealthyHealthy · Hiring · 8% CAGR over 4y
Location
Unicorn Ventures Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsDevelops and operates advertising technology software that enables digital publishers, media buyers and ad networks to distribute and monetise online content programmatically. Provides optimisation…
Serves B2B digital advertising customers, including digital media buyers, ad networks, media networks, ad exchanges, publishers and content creators seeking programmatic monetisation and distribution…
Financial Health
StableStable · Hiring · 11% CAGR over 4y
Location
TEADS LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsOperates a digital advertising platform that delivers and manages campaigns across websites, mobile apps, and connected TV. Provides ad formats, creative production, audience data, and performance…
Serves B2B customers: brand advertisers and marketing teams, plus premium media owners, publishers and OEMs, across open-internet digital advertising channels.
Financial Health
StableStable · Hiring · 5% CAGR over 4y
Location
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsDevelops advertising technology software providing a self‑serve platform for publishers and media companies to sell and manage digital advertising. Tools support campaign booking, inventory…
Serves B2B publishers, media owners, and brands with advertising inventory, targeting ad sales and operations teams that manage direct campaigns for SMB and enterprise advertisers globally.
Financial Health
WeakWeak · 0% CAGR over 4y
Location
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsProvides programmatic advertising technology and services including high‑impact display and video ad formats, creative production, campaign management, and attention measurement tools that help…
Serves B2B customers in digital advertising, including brands, media agencies and advertisers running programmatic campaigns, plus publishers seeking premium demand, audience attention insights and…
Financial Health
HealthyHealthy · Hiring · 39% CAGR over 3y
Location
FENESTRA HOLDINGS LTD
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides AI-based software platform for digital advertising teams that collects and analyses impression-level campaign and transaction data, automates reporting and data consolidation, and optimises…
Sells to B2B advertisers, biddable media teams and paid media agencies managing multi-platform digital advertising campaigns, including marketing and digital data leaders seeking campaign performance…
Financial Health
StableStable · -3% CAGR over 4y
Location
GUMGUM UK LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsDevelops and operates a digital advertising platform that enables advertisers and publishers to buy and sell ad inventory using contextual analysis and attention metrics, delivering brand-safe ads…
Serves advertisers, media agencies, publishers, and adtech platforms/partners seeking privacy-forward contextual digital advertising, CTV/video inventory monetisation, brand safety and…
Financial Health
WeakWeak · -57% CAGR over 4y
Location
TRADE HOUSE MEDIA LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides advertising technology platform for digital publishers, integrating ad server, header bidding (Prebid), auction management and analytics. Offers tools for inventory control, revenue…
Serves B2B digital publishers, media brands and enterprise publishing teams worldwide, including Adsense users, direct-sales publishers, restricted-content sites and organisations with complex…
Financial Health
HealthyHealthy · Hiring · 5% CAGR over 4y
Location
PUBMATIC LIMITED
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides programmatic advertising technology for digital publishers, app developers, and media buyers. Operates a supply-side platform and related tools for ad inventory monetization, media buying,…
Serves digital publishers, app developers, CTV/OTT publishers, commerce media networks, agencies, and media buyers or advertisers operating programmatic advertising across the open internet.
Financial Health
StrongStrong · Hiring · 8% CAGR over 2y
Location
Trajectory
5y · 2019–NowFinancial sub-scores
Computed from 5 filingsOperates a digital advertising technology platform providing demand‑side and supply‑side tools, data management and identity resolution. Enables advertisers to run programmatic campaigns and helps…
Serves B2B advertisers, brands, agencies and media publishers seeking programmatic advertising reach, connected TV audiences, data-driven targeting and ad inventory monetisation across global digital…
Financial Health
DistressedDistressed · -21% CAGR over 6y
Location
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides a demand-side platform for B2B digital advertising. Uses intent data, IP targeting, and account-based marketing to deliver programmatic display ads to specific companies and decision‑makers…
Serves B2B marketing and sales teams seeking to target business accounts, plus B2B and media agencies. Industry focus includes technology, software, manufacturing, automotive, healthcare, logistics…
Financial Health
StrongStrong
Location
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsOperates an omnichannel advertising technology platform that connects brands, agencies and publishers. Provides tools for programmatic advertising, audience data activation, mobile app and web…
Sells to B2B media buyers and sellers: brands, agencies, DSPs, publishers and platforms. Targets advertiser teams in brand, performance, CPG and shopper marketing, plus app publishers and…
Financial Health
HealthyHealthy · Hiring · 12% CAGR over 2y
Location
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides a mobile demand-side platform for programmatic advertising, enabling app and game marketers to run user acquisition and retargeting campaigns, manage bidding algorithms, and analyse data…
Serves B2B app and game marketers at performance brands, agencies and holding companies, including entertainment, gaming, finance, food delivery, retail/ecommerce, social media and travel businesses.
Financial Health
StrongStrong · Growing, Hiring · 19% CAGR over 2y
Location
Adloox Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides digital advertising verification software that measures viewability, fraud, brand safety and campaign quality across programmatic advertising. Supplies analytics and monitoring tools for…
Sells to businesses in digital advertising, specifically brands, media agencies and publishers running programmatic campaigns who need ad verification and campaign insights.
Financial Health
DistressedDistressed · -12% CAGR over 4y
Location
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides software platform for marketing measurement, attribution, deep linking, and data collaboration across mobile apps, web, CTV and other channels, helping businesses analyse campaign…
Serves B2B marketing teams at app-led and omnichannel brands, including gaming, finance, eCommerce, entertainment, food and drink, health and fitness, travel and subscription apps, plus agencies and…
Financial Health
StrongStrong · Hiring · 27% CAGR over 5y
Location
Smartology Limited
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides a SaaS contextual advertising platform that uses AI to analyse webpage content and match adverts with relevant articles across a network of publishers. Offers campaign management, brand…
Serves B2B advertisers, brands and marketing teams seeking contextual, cookie-free digital advertising across premium publisher networks, with reporting and brand-safety controls.
Financial Health
WeakWeak · -11% CAGR over 4y
Location
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides an online platform for booking and managing advertising campaigns across linear TV, BVoD, addressable TV and cinema. Connects media agencies, advertisers and broadcasters, enabling campaign…
Serves the UK and Irish advertising industry, selling to media agencies, ad agencies, advertisers, broadcasters and other media owners managing TV, BVoD, addressable TV and cinema campaigns.
Financial Health
WeakWeak
Location
Silverpush Limited
Trajectory
2y · 2024–NowFinancial sub-scores
Computed from 2 filingsProvides marketing technology for digital advertising, including AI-driven contextual video ad targeting, moment-based ad placement, and real-time TV ad synchronisation. Offers platforms for…
Serves B2B marketing teams, media agencies and brand advertisers running digital video, CTV, social and open-web campaigns, especially those needing brand suitability and contextual audience…
Financial Health
StrongStrong · Growing, Hiring · 67% CAGR over 1y
Location
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides software for digital advertising creative automation, enabling brands, agencies, and media platforms to design, generate, manage, and deliver rich media, video, and catalog ads, with tools…
Sells to businesses in digital advertising, especially brand marketing leaders, media teams and creative teams, plus media owners and operators such as publishers and media platforms seeking to scale…
Financial Health
DistressedDistressed · -8% CAGR over 5y
Location
Trajectory
2y · 2024–NowFinancial sub-scores
Computed from 2 filingsProvides an advertising technology platform that enables advertisers and publishers to create, manage, and deliver digital and connected TV ads, run paid social campaigns, and measure reach,…
Serves B2B advertisers, publishers and ad-tech partners, including teams in automotive, CPG, media, financial services, gambling, pharma, retail, telecoms and travel.
Financial Health
DistressedDistressed · -50% CAGR over 1y
Location
DoubleVerify
Trajectory
1y · 2021–NowProvides digital media measurement and analytics software for advertisers and publishers. Its platform verifies ad impressions, detects fraud, measures viewability and brand suitability, and uses…
Serves global brands, advertisers and media agencies buying digital media, plus publishers, marketplaces, social platforms, streaming TV and commerce/retail media networks.
Financial Health
Insufficient historyInsufficient history
Location
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides advertising monetization technology for websites and apps, including programmatic ad management, display and video ad serving, bid optimisation, and first‑party data identity integration…
Sells to digital publishers and owners of websites, apps, tools, games and content platforms seeking ad monetization, audience data use, and advertising revenue management.
Financial Health
StableStable · 0% CAGR over 4y
Location
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides an AI-powered commerce media platform that helps brands and agencies manage and optimise retail media, search and social advertising. The software centralises marketing data, offers…
Serves B2B marketing teams at brands, including CPG and commerce advertisers, plus media agencies managing retail media, search and social campaigns across publishers and marketplaces.
Financial Health
HealthyHealthy · -6% CAGR over 2y
Location
CRIMTAN CEE LIMITED
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsDevelops programmatic advertising technology and provides digital marketing services, including audience targeting, dynamic creative optimisation, connected advertising, and campaign management…
Serves marketing and digital advertising teams at established consumer brands and agencies, including retail, travel, tourism and fashion advertisers seeking programmatic campaign partners across…
Financial Health
DistressedDistressed
Location
LIFTOFF MOBILE LTD.
Trajectory
2y · 2024–NowFinancial sub-scores
Computed from 2 filingsProvides a mobile advertising and app growth platform offering user acquisition, ad monetisation, programmatic ad exchange, and creative optimisation tools. Uses machine learning and analytics to…
Serves B2B customers in the mobile app ecosystem: app marketers, advertising agencies, demand-side platforms, publishers, and mobile game developers.
Financial Health
HealthyHealthy · -9% CAGR over 1y
Location
App Samurai Limited
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides advertising technology for mobile apps and games, including a demand-side platform for user acquisition and retargeting, OEM-based app discovery placements, and rewarded playtime…
Serves B2B mobile app and game publishers, app marketers, and brands seeking app growth, including teams focused on user acquisition, retargeting, engagement, and monetization.
Financial Health
HealthyHealthy · Hiring · 53% CAGR over 2y
Location
Operates a programmatic advertising exchange and supply-side platform that enables media owners, app developers, and streaming TV publishers to sell digital ad inventory, and allows marketers and…
Serves B2B customers in digital advertising, including media owners, publishers, streaming TV publishers, app developers, marketers, agencies, DSPs and ad tech partners globally.
Location
Doubleverify Ltd
Trajectory
3y · 2020–NowFinancial sub-scores
Computed from 3 filingsProvides a media effectiveness and ad verification platform for digital advertising. Measures viewability, detects ad fraud, assesses brand suitability and context, and offers analytics and…
Serves global brands, advertisers and advertising agencies, plus digital publishers, marketplaces, and commerce media, social media and streaming TV platforms across the digital advertising ecosystem.
Financial Health
StrongStrong · Growing, Hiring · 45% CAGR over 2y
Location
ILLUMA TECHNOLOGY LTD
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsDevelops contextual AI technology for digital advertising. Provides tools that classify and analyse online content and bidstream signals to enable cookie‑free ad targeting, campaign optimisation, and…
Serves enterprise brands, media agencies, broadcasters, publishers, online platforms and adtech partners involved in digital, programmatic and CTV advertising.
Financial Health
HealthyHealthy · -54% CAGR over 5y
Location
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsProvides a data platform for digital marketers and advertisers to collect, connect and manage customer data, build and enrich audience segments, resolve identities across devices, and activate…
Serves B2B digital marketers, advertising agencies, brands, and media/data owners needing audience data, identity, targeting, data collaboration, and monetisation across adtech, CTV, social, and…
Financial Health
HealthyHealthy · 0% CAGR over 3y
Location
RED VOLCANO LIMITED
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsDevelops data platforms for the advertising technology sector, providing tools to discover websites, mobile apps and CTV publishers. Services include crawled ad‑tag and traffic data, publisher…
Serves B2B customers in ad tech, including SSPs, ad networks, DSPs, agencies and publisher monetisation teams seeking publisher, app and ads.txt intelligence.
Financial Health
StrongStrong · Growing, Hiring · 38% CAGR over 5y
Location
CONTENT IGNITE LIMITED
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsProvides an ad monetisation and management platform for online publishers, offering header bidding technology, ad unit deployment via a single tag, integrations with demand partners, experimentation…
Serves B2B digital publishers, media owners and their ad operations, yield and revenue teams, including sites using programmatic advertising and publisher monetisation technology.
Financial Health
HealthyHealthy · Hiring · 3% CAGR over 4y
Location
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides software for TV advertising sales and campaign management, enabling broadcasters and networks to plan, forecast and manage cross‑platform ad inventory, audience segments, proposals, booking…
Serves B2B sales-side TV advertising organisations, including TV platforms, broadcasters, networks and programmers, with additional stakeholders such as advertisers, agencies and inventory partners.
Financial Health
HealthyHealthy · -10% CAGR over 4y
Location
Automated Creative Ltd
Trajectory
5y · 2020–NowFinancial sub-scores
Computed from 5 filingsDevelops advertising technology that generates, tags and tests digital ad creatives using live performance data. Platform enables marketers to produce large volumes of ads and analyse results across…
Serves B2B marketing teams, performance marketers and global CMOs at large consumer brands and agencies running paid social, display, video and retail media campaigns across multiple markets.
Financial Health
StrongStrong · Growing, Hiring · 37% CAGR over 4y
Location
Publisher First Ltd
Trajectory
3y · 2023–NowFinancial sub-scores
Computed from 3 filingsProvides digital advertising monetisation services for website publishers, including managed ad operations, exchange bidding across ad exchanges, multi‑channel ad delivery for different devices, and…
Serves digital publishers across verticals and devices, including website and app owners with online audiences seeking managed ad operations, exchange bidding access and revenue payments.
Financial Health
StableStable · Hiring · 21% CAGR over 2y
Location
Trajectory
3y · 2024–NowFinancial sub-scores
Computed from 3 filingsProvides an online advertising technology platform offering contextual native advertising. Enables publishers to monetise website traffic and allows advertisers to run targeted ad campaigns through…
Serves B2B digital publishers seeking monetisation and advertisers buying contextual native advertising, including sophisticated publishers, advertisers and larger companies globally.
Financial Health
WeakWeak · -18% CAGR over 2y
Location
Segmentstream Ltd
Trajectory
4y · 2022–NowFinancial sub-scores
Computed from 4 filingsDevelops marketing measurement and optimisation software that analyses advertising performance across channels. Provides attribution modelling, incrementality testing, predictive lead scoring,…
Serves growth and performance marketing leaders at brands and agencies investing in paid media, including DTC/ecommerce advertisers and teams managing cross-channel ad budgets.
Financial Health
DistressedDistressed · -26% CAGR over 3y
Location
Trajectory
2y · 2024–NowFinancial sub-scores
Computed from 2 filingsProvides programmatic advertising technology through a sell‑side platform that connects publishers and advertisers. Offers audience targeting, ad inventory monetisation, campaign analytics, and…
Serves B2B customers in digital advertising: brands, advertisers, media agencies and DSP partners seeking premium open-web inventory, plus online publishers looking to monetize audiences through…
Financial Health
StableStable
Location
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsDevelops advertising technology that enables media owners to target and monetise audiences across connected TV, mobile, web, and audio platforms. Provides tools for audience segmentation, campaign…
Sells to B2B media owners and advertising teams, including digital publishers, broadcasters, connected TV platforms, smart speaker, audio and podcast businesses seeking audience monetisation and…
Financial Health
StableStable · -66% CAGR over 4y
Location
ID Ward Ltd
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsDevelops an AI-driven marketing data platform that connects publishers and advertisers. Provides tools for audience targeting, customer discovery and incremental campaign measurement across web,…
Sells to businesses in digital advertising, specifically publishers seeking to monetise audiences and advertisers/marketing teams aiming to reach, analyse and measure incremental audiences across…
Financial Health
StableStable · Hiring · 27% CAGR over 4y
Location
ILLUMA TECHNOLOGY HOLDINGS LTD
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsDevelops contextual AI technology for digital advertising. Provides tools that classify and analyse online content and bidstream signals to enable ad targeting, campaign optimisation and inventory…
Serves enterprise B2B customers in digital advertising: brands, media agencies, broadcasters, publishers, online platforms and adtech partners running programmatic, CTV/OTT and online video campaigns.
Financial Health
DistressedDistressed
Location
Develops AI-driven advertising technology that analyses live online intent signals to build audience segments and deliver targeted digital advertising campaigns. Its platform provides ID-free…
Serves B2B advertisers, brands, agencies and programmatic media teams seeking privacy-first digital targeting. Targets marketers running display, video and CTV campaigns across multiple markets,…
Financial Health
Insufficient historyInsufficient history
Location
MULTILOCAL MEDIA LTD
Trajectory
5y · 2021–NowFinancial sub-scores
Computed from 5 filingsProvides audience curation services for programmatic digital advertising. Operates a platform that analyses publisher domains, apps and audience data to build curated marketplaces, match advertisers…
Serves B2B customers in digital advertising, primarily advertisers, media agencies, publishers and media owners managing programmatic campaigns across web, app and CTV inventory.
Financial Health
HealthyHealthy
Location
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How UK AdTech companies work and how to sell to them
What they do
AdTech firms usually make money from cloud software, data infrastructure, marketplaces and managed services attached to digital advertising workflows. Pricing tends to follow seat licences, monthly platform fees, usage charges, a share of media spend, or service retainers for teams that want execution support as well as tooling. Products often sit between the advertiser and the media owner: planning campaigns, moving audience data, automating buying, checking placement quality, measuring outcomes or helping publishers package inventory. Gross margin can vary widely where revenue is linked to media buying rather than pure software access.
Who they sell to
Most AdTech vendors sell to marketing, media, commercial and data teams rather than a single technical buyer. Brand-side buyers are typically CMOs, media directors, heads of digital, revenue operations leads and procurement teams; agency buyers often include planning, programmatic, analytics and trading leads. Publisher-side sales tend to involve commercial directors, yield teams, ad operations and product managers. Smaller tools may enter through a trial or team subscription, while larger contracts often require security review, privacy checks, performance evidence and a procurement process shaped by annual campaign budgets or agency roster decisions.
What they buy
Most AdTech firms tend to spend on cloud hosting, data storage, event streaming, analytics, observability, security monitoring and identity or consent tooling. Sales and customer teams usually need CRM, billing, contract management, customer success systems and reporting infrastructure that can cope with usage-based revenue. Compliance support matters where products touch personal data, profiling, consent records or cross-border processing, so legal, privacy and information-security advisers can be credible suppliers. Recruitment, outsourced engineering, design, marketing operations and finance support also fit, particularly for firms moving from specialist services into repeatable platform revenue.
Why and how to sell to them
AdTech buyers tend to evaluate vendors when campaign volume rises, publisher integrations become harder to manage, reporting becomes too manual, or privacy requirements start to slow product releases. New commercial leadership, agency wins, a shift toward enterprise accounts, or a fresh funding round can also create buying intent. Useful outbound angles are usually specific: lower the cost of campaign operations, improve auditability for privacy and brand-safety reviews, shorten customer onboarding, reduce engineering time spent on integrations, or make usage-based revenue easier to invoice and forecast. Generic productivity claims tend to land less well than proof tied to campaign economics.
How this list is built
Data sources
This list is built from UK Companies House filings, XBRL accounts data, and semantic analysis of each company's public website. 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.
Classification
Rather than relying solely on SIC codes, Firmbase classifies each company semantically: the company's website is crawled, an AI model reads what the company actually sells, and the company is placed into the relevant industry and subsectors. SIC codes are used as one signal but not the only one. This means a company that registered under a generic SIC code but pivoted into (for example) fintech is correctly identified as fintech, not as its original SIC category.
Freshness
The underlying company data is refreshed from Companies House continuously; filings appear in the list within days of submission. The curated list ordering is regenerated when the underlying data moves meaningfully (company count changes by more than 5%, a new company enters the top-ranked segment, or the filed-revenue numbers for the top firms change). You can see the last-updated timestamp near the top of the page.
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