Company lists · Data refreshed September 2026

Top 24 B2B advertising platforms based in the United Kingdom

Name: B2B advertising platforms based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 27, 2026 1,051 companies tracked

RevenueBase identified 1,051 B2B advertising platforms headquartered in the United Kingdom as of September 2026 and tracks 24,992 professional contacts across them, including 4,918 with verified work emails. London is the largest hub.

This list covers B2B advertising platforms headquartered in the United Kingdom, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 27, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 27, 2026 86% judged on-target in blind review

1,051Companies

24,992Contacts tracked

4,918Verified emails

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The 24 largest B2B advertising platforms based in the United Kingdom

Ranked by team size

Top 24 of 1,051 B2B advertising platforms based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 27, 2026. RevenueBase Smart Search rates how each company's information relates to B2B advertising platforms: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Publicis Media	Indirect evidence	London, United KingdomHQ checked Sep 27, 2026	10001+	6,901 contacts →
	Indirect evidence “Publicis Media harnesses the power of modern media through leading agency brands Dysrupt, Infinite Roar, Publicis Collective, Publicis Health Media, Spark Foundry, Starcom and…” Source: RevenueBase Database · checked Sep 27, 2026
2	M C Saatchi Performance	Indirect evidence	London, United KingdomHQ checked Sep 27, 2026	201-500	457 contacts →
	Indirect evidence “We are a Global digital media agency specializing in taking a human approach to connecting brands with people across all channels.” Source: RevenueBase Database · checked Sep 27, 2026
3	Loopme	Indirect evidence	London, United KingdomHQ checked Sep 27, 2026	201-500	401 contacts →
	Indirect evidence “LoopMe is bringing brands into apps, powered by AI agents.” Source: RevenueBase Database · checked Sep 27, 2026
4	Qogita	Strong evidence	London, United KingdomHQ checked Sep 27, 2026	51-200	184 contacts →
	Strong evidence “Qogita is a leading global wholesale B2B platform that offers a wide variety of products, brands and categories across geographies.” Source: RevenueBase Database · checked Sep 27, 2026
5	ALL Response Media	Indirect evidence	London, United KingdomHQ checked Sep 27, 2026	51-200	178 contacts →
	Indirect evidence “All Response Media is the leading performance media planning and buying agency.” Source: RevenueBase Database · checked Sep 27, 2026
6	Expandi Group	Indirect evidence	London, United KingdomHQ checked Sep 27, 2026	201-500	155 contacts →
	Indirect evidence “Expandi Group is a global leader in AdTech, MarTech and Managed Services.” Source: RevenueBase Database · checked Sep 27, 2026
7	Invibes Advertising	Partial evidence	London, United KingdomHQ checked Sep 27, 2026	201-500	146 contacts →
	Partial evidence “At Invibes, our mission is to drive positive brand impact and business outcomes by prioritizing the uniqueness of every ad opportunity through valuable advertising solutions.” Source: RevenueBase Database · checked Sep 27, 2026
8	Publicis PRO	Partial evidence	London, United KingdomHQ checked Sep 27, 2026	51-200	139 contacts →
	Partial evidence “Publicis Pro is the specialist B2B marketing agency within Publicis Groupe, the world's number one marketing holding group.” Source: RevenueBase Database · checked Sep 27, 2026
9	Crimtan	Partial evidence	London, United KingdomHQ checked Sep 27, 2026	51-200	130 contacts →
	Partial evidence “Crimtan was established in 2009 with a clear mission: to be a trusted partner for brands navigating the complex world of programmatic advertising.” Source: RevenueBase Database · checked Sep 27, 2026
10	NRI	Partial evidence	London, United KingdomHQ checked Sep 27, 2026	201-500	126 contacts →
	Partial evidence “NRi Digital creates design-led digital content for B2B and commercial markets.” Source: RevenueBase Database · checked Sep 27, 2026
11	Admixer	Indirect evidence	London, United KingdomHQ checked Sep 27, 2026	201-500	99 contacts →
	Indirect evidence “Admixer is an independent adtech company that develops an ecosystem of full-stack programmatic solutions.” Source: RevenueBase Database · checked Sep 27, 2026
12	Twogether	Indirect evidence	Marlow, United KingdomHQ checked Sep 27, 2026	201-500	92 contacts →
	Indirect evidence “Welcome!” Source: RevenueBase Database · checked Sep 27, 2026
13	Internal Results	Partial evidence	London, United KingdomHQ checked Sep 27, 2026	201-500	88 contacts →
	Partial evidence “The B2B Customer Acquisition Specialists Internal Results specialize in generating leads, promoting content, and driving brand awareness for B2B organizations worldwide through…” Source: RevenueBase Database · checked Sep 27, 2026
14	S4 Capital Group	Partial evidence	London, United KingdomHQ checked Sep 27, 2026	5,001-10,000	74 contacts →
	Partial evidence “S4Capital plc is the tech-led, new age/new era digital advertising and marketing services company, established by Sir Martin Sorrell in May 2018.” Source: RevenueBase Database · checked Sep 27, 2026
15	Nest Commerce	Indirect evidence	London, United KingdomHQ checked Sep 27, 2026	51-200	69 contacts →
	Indirect evidence “Nest Commerce is a technology-led agency working with brands like Urban Outfitters, Hims and Damson Madder.” Source: RevenueBase Database · checked Sep 27, 2026
16	Armstrongb2b	Partial evidence	Chester, United KingdomHQ checked Sep 27, 2026	51-200	67 contacts →
	Partial evidence “ArmstrongB2B® is a B2B marketing agency for industrial and manufacturing brands, with offices in the UK and USA.” Source: RevenueBase Database · checked Sep 27, 2026
17	Agent3 X Pretzl	Indirect evidence	London, United KingdomHQ checked Sep 27, 2026	51-200	62 contacts →
	Indirect evidence “We create powerful, creative, end-to-end Account Based Marketing programs with measurable impact using proprietary and applied technology services.” Source: RevenueBase Database · checked Sep 27, 2026
18	Make Agency	Indirect evidence	London, United KingdomHQ checked Sep 27, 2026	11-50	58 contacts →
	Indirect evidence “Make is one of the UK's fastest-growing Digital Agencies, with a growing team of 50 - servicing clients including IBM, Asana, Eventbrite, Soldo, Campari, Clearpay, Disney…” Source: RevenueBase Database · checked Sep 27, 2026
19	59a	Indirect evidence	London, United KingdomHQ checked Sep 27, 2026	51-200	55 contacts →
	Indirect evidence “59A is a technology business built to engineer opportunity within the ever increasing complexity of media strategy, planning, and buying.” Source: RevenueBase Database · checked Sep 27, 2026
20	OCM Digital Media	Partial evidence	London, United KingdomHQ checked Sep 27, 2026	51-200	54 contacts →
	Partial evidence “OCM is a leading adtech agency providing solutions to advertisers, advertising agencies and to web, mobile & video publishers.” Source: RevenueBase Database · checked Sep 27, 2026
21	The Marketing Practice	Partial evidence	London, United KingdomHQ checked Sep 27, 2026	501-1,000	51 contacts →
	Partial evidence “At The Marketing Practice, we’ve combined the best B2B specialists from across the globe in one business, with capabilities that stretch through the funnel, from brand to demand…” Source: RevenueBase Database · checked Sep 27, 2026
22	Digital Apple	Partial evidence	London, United KingdomHQ checked Sep 27, 2026	51-200	47 contacts →
	Partial evidence “Digital Apple is a full-service creative agency for B2B.” Source: RevenueBase Database · checked Sep 27, 2026
23	BAMBU	Partial evidence	London, United KingdomHQ checked Sep 27, 2026	n/a	45 contacts →
	Partial evidence “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…” Source: RevenueBase Database · checked Sep 27, 2026
24	Direct On Demands	Partial evidence	London, United KingdomHQ checked Sep 27, 2026	51-200	45 contacts →
	Partial evidence “Direct On Demands is a global B2B demand generation and marketing technology solutions provider helping organizations accelerate revenue growth and build high-performing sales…” Source: RevenueBase Database · checked Sep 27, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: B2B advertising platforms. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names B2B advertising platforms.
Partial evidence: Its own public description names part of B2B advertising platforms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name B2B advertising platforms. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 24 of 1,051 B2B advertising platforms based in the United Kingdom

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B2B advertising platforms based in the United Kingdom at a glance

As of Sep 27, 2026

19.7%Verified-email coverage

23.8Average contacts per company

1-10Median size (employees)

43.5%Largest-city concentration · London

Sep 27, 2026Page data refreshed

Companies by employee count

1-10

668

11-50

289

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency for this list is measured worldwide rather than for United Kingdom, so it is reported there. Company counts and contact totals on this page are exact for United Kingdom, over 1,051 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among B2B advertising platforms, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in the United Kingdom whose own description of what they do matches “B2B advertising platforms”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names B2B advertising platforms), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among B2B advertising platforms, and records with no verified work email. Companies headquartered outside United Kingdom are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
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 listed company carries at least one verified work email, 4,918 across the full list. 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 27, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

B2B advertising platforms by metro

B2B advertising platforms in London457
B2B advertising platforms in Manchester55

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names B2B advertising platforms, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many B2B advertising platforms are there based in the United Kingdom?

RevenueBase identified 1,051 B2B advertising platforms headquartered in the United Kingdom as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Publicis Media, headquartered in London, tops this list with the largest team on record.

Which city has the most B2B advertising platforms?

London leads with 457 headquartered companies, followed by Manchester (55) and Birmingham (24).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 4,918 verified decision-maker contacts tracked across these 1,051 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 27, 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 Smart Search, 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.