Company lists · Data refreshed September 2026

Top 25 Ad software companies based in London, United Kingdom

RevenueBase identified 201 company matches for ad software companies associated with London, United Kingdom as of September 2026 and tracks 2,111 professional contacts across them, including 693 with verified work emails and 156 with mobile numbers. Across the United Kingdom, London is the largest hub for this category.

This list covers company matches for ad software companies associated with London, United Kingdom, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 23, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list RevenueBase SmartSearch · Exact Recorded Sep 23, 2026 How this list was built
201Companies
2,111Contacts tracked
693Verified emails
156Mobile numbers
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The 25 largest ad software companies based in London, United Kingdom

Ranked by team size
Top 25 of 201 company matches for ad software companies based in London, United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 23, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchLondon, United KingdomHQ recorded Sep 23, 2026201-500155 contacts →

Exact match

“Expandi Group is a global leader in AdTech, MarTech and Managed Services.”

Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
2Exact matchLondon, United KingdomHQ recorded Sep 23, 202651-200122 contacts →

Exact match

“Permutive is the predictive collaboration platform enabling Walled Garden outcomes on the Open Internet.”

Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
3Exact matchLondon, United KingdomHQ recorded Sep 23, 2026201-50099 contacts →

Exact match

“Admixer is an independent adtech company that develops an ecosystem of full-stack programmatic solutions.”

Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
4Exact matchLondon, United KingdomHQ recorded Sep 23, 202651-20069 contacts →

Exact match

“Nest Commerce is a technology-led agency working with brands like Urban Outfitters, Hims and Damson Madder.”

Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
5Exact matchLondon, United KingdomHQ recorded Sep 23, 202651-20054 contacts →

Exact match

“OCM is a leading adtech agency providing solutions to advertisers, advertising agencies and to web, mobile & video publishers.”

Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
6Exact matchLondon, United KingdomHQ recorded Sep 23, 2026n/a45 contacts →

Exact match

“Bambu is an online marketing and advertising agency based in London, working with startup and growth brands across the UK, Europe and North America, founded by two ex-WPP…”

Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
7Exact matchLondon, United KingdomHQ recorded Sep 23, 2026201-50044 contacts →

Exact match

“Peach is working to radically simplify ad workflows.”

Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
8Exact matchLondon, United KingdomHQ recorded Sep 23, 202651-20043 contacts →

Exact match

“adWMG, a division of WMG International, is a leading ad-tech company specializing in programmatic game promotion and monetization.”

Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
9Exact matchLondon, United KingdomHQ recorded Sep 23, 2026501-1,00039 contacts →

Exact match

“Nexxen empowers advertisers, agencies, publishers and broadcasters around the world to utilize data and advanced TV in the ways that are most meaningful to them.”

Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
10Exact matchLondon, United KingdomHQ recorded Sep 23, 202611-5039 contacts →

Exact match

“Focus on strategy, not manually time-consuming tasks.”

Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
11Exact matchLondon, United KingdomHQ recorded Sep 23, 202611-5038 contacts →

Exact match

“Our platform helps performance marketers scale social, display and retail media campaigns.”

Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
12Exact matchLondon, United KingdomHQ recorded Sep 23, 202611-5038 contacts →

Exact match

“We're an ad-tech company, serving the £23bn global market for audio advertising with software-as-a-service solutions for revenue optimisation, planning and scheduling.”

Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
13Exact matchLondon, United KingdomHQ recorded Sep 23, 202611-5032 contacts →

Exact match

“illuma is a British AI company, pioneering contextual solutions for enterprise since 2015.”

Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
14Exact matchLondon, United KingdomHQ recorded Sep 23, 202611-5031 contacts →

Exact match

“Pattrns was founded on years of first class experience in all elements of biddable media from Search Ads 360, Google Ads and Meta Ads.”

Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
15Exact matchLondon, United KingdomHQ recorded Sep 23, 202611-5029 contacts →

Exact match

“Future-proofing B2B digital advertising and analytics in a cookieless world.”

Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
16Exact matchLondon, United KingdomHQ recorded Sep 23, 202611-5025 contacts →

Exact match

“At Voise Tech, we simplify the complexity of digital advertising through.”

Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
17Exact matchLondon, United KingdomHQ recorded Sep 23, 202651-20024 contacts →

Exact match

“Adludio is an award-winning, AI-powered platform that delivers brand outcomes through interactive mobile advertising.”

Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
18Exact matchLondon, United KingdomHQ recorded Sep 23, 202651-20023 contacts →

Exact match

“Naritive is a media owner dedicated to offering brands and companies better optimised and effective programmatic and display ad solutions.”

Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
19Exact matchLondon, United KingdomHQ recorded Sep 23, 202611-5018 contacts →

Exact match

“Hoopla are an independent start-up online advertising network, specialising in online video, display, mobile and branded advertising solutions.”

Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
20Exact matchLondon, United KingdomHQ recorded Sep 23, 202611-5017 contacts →

Exact match

“Anonymised is a data platform using AI to drive incremental outcomes for advertisers.”

Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
21Exact matchLondon, United KingdomHQ recorded Sep 23, 202611-5017 contacts →

Exact match

“Ads and More Group is an international holding operating globally in programmatic marketing, built to deliver measurable growth through data, technology, and disciplined execution.”

Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
22Exact matchLondon, United KingdomHQ recorded Sep 23, 202651-20017 contacts →

Exact match

“AccountInsight helps you put your B2B ads in front of the companies that matter most, even when their teams are working remotely.”

Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
23Exact matchLondon, United KingdomHQ recorded Sep 23, 202611-5016 contacts →

Exact match

“Audience2Media is an Advertising Technology based company with offices in the UK and Asia, delivering data driven campaigns across all media channels, applying an innovative…”

Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
24Exact matchLondon, United KingdomHQ recorded Sep 23, 202611-5014 contacts →

Exact match

“Welcome to bidinfluence, your premier supply-side platform specializing in the dynamic monetization of mobile applications through top-notch programmatic video ads.”

Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
25Exact matchLondon, United KingdomHQ recorded Sep 23, 202611-5013 contacts →

Exact match

“As agencies grow, they’re often obsessed with trying to ‘own’ as much of the customer journey as possible, over time turning into broader generalists.”

Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase

Showing 25 of 201 ad software companies based in London, United Kingdom

See the full list, filter by size, metro and specialty, and access 693 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Ad software companies based in London, United Kingdom at a glance

As of Sep 23, 2026
32.8%Verified-email coverage
7.4%Mobile-number coverage
10.5Average contacts per company
11-50Median size (employees)
Sep 23, 2026Page data refreshed

Companies by employee count

1-10
89
11-50
85
51-200
18
201-500
5
501-1,000
3

Freshness & accuracy

How recently the business emails were verified and the company information checked

Email last verified

Median 26.0d

Company record updated

Median 77.0d

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies
Company records associated with London, United Kingdom whose business descriptions match “ad software companies” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
Ranking
Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification
Every displayed company carries at least one verified work email. RevenueBase tracks 693 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh
This page's figures were pulled from the company graph on September 23, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “ad software companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many ad software companies are there based in London, United Kingdom?

RevenueBase identified 201 company matches for ad software companies associated with London, United Kingdom as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Expandi Group tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city in the United Kingdom has the most ad software companies?

London leads the United Kingdom with 229 company records, followed by Manchester (10) and Belfast (6).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 693 professional contacts with verified work emails tracked across these 201 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 23, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.