Company lists · Data refreshed September 2026

Top 24 Programmatic advertising agencies based in the United Kingdom

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

Compiled by the RevenueBase Data Team Data refreshed Sep 5, 2026 796 companies tracked

RevenueBase identified 796 programmatic advertising agencies headquartered in the United Kingdom as of September 2026 and tracks 26,343 professional contacts across them, including 6,399 with verified work emails and 3,150 with mobile numbers. London is the largest hub.

This list covers programmatic advertising agencies 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, how directly it supports the match, and when it was last checked. Data refreshed September 5, 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 HQ checked on every row Match evidence on every row Refreshed Sep 5, 2026 86% judged on-target in blind review

796Companies

26,343Contacts tracked

6,399Verified emails

3,150Mobile numbers

Explore all 796 companies → Free signup · no credit card · 500 free credits

The 24 largest programmatic advertising agencies based in the United Kingdom

Ranked by team size

Top 24 of 796 programmatic advertising agencies based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 5, 2026. Evidence rates how directly each company's own description names programmatic advertising agencies: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#	Company	Headquarters	Employees	Contacts
1	Publicis MediaIndirect evidence	London, United KingdomHQ checked Sep 5, 2026	10001+	6,901
	“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: company website · checked Sep 5, 2026
2	MG OMDIndirect evidence	London, United KingdomHQ checked Sep 5, 2026	201-500	527
	“MG OMD, part of Omnicom Media, brings innovation, insight and creativity to the world of media.” Source: company website · checked Sep 5, 2026
3	M C Saatchi PerformanceIndirect evidence	London, United KingdomHQ checked Sep 5, 2026	201-500	457
	“We are a Global digital media agency specializing in taking a human approach to connecting brands with people across all channels.” Source: company website · checked Sep 5, 2026
4	Essencemediacom UKIndirect evidence	London, United KingdomHQ checked Sep 5, 2026	501-1,000	416
	“EssenceMediacom is WPP Media's newest and largest agency, committed to delivering breakthroughs for brands in the New Communications Economy.” Source: company website · checked Sep 5, 2026
5	LoopmeIndirect evidence	London, United KingdomHQ checked Sep 5, 2026	201-500	401
	“LoopMe is bringing brands into apps, powered by AI agents.” Source: company website · checked Sep 5, 2026
6	BLISPartial evidence	London, United KingdomHQ checked Sep 5, 2026	201-500	344
	“Blis, part of T-Mobile Advertising Solutions, is an omnichannel advertising platform that helps brands understand, reach, and engage audiences across every major channel and…” Source: company website · checked Sep 5, 2026
7	NewbasePartial evidence	London, United KingdomHQ checked Sep 5, 2026	501-1,000	282
	“At NewBase we provide expert and independent marketing and advertising services across all media channels globally.” Source: company website · checked Sep 5, 2026
8	Brave BisonIndirect evidence	London, United KingdomHQ checked Sep 5, 2026	201-500	210
	“A world where complexity is the only constant demands a new breed of company.” Source: company website · checked Sep 5, 2026
9	ALL Response MediaIndirect evidence	London, United KingdomHQ checked Sep 5, 2026	51-200	178
	“All Response Media is the leading performance media planning and buying agency.” Source: company website · checked Sep 5, 2026
10	Expandi GroupIndirect evidence	London, United KingdomHQ checked Sep 5, 2026	201-500	155
	“Expandi Group is a global leader in AdTech, MarTech and Managed Services.” Source: company website · checked Sep 5, 2026
11	Invibes AdvertisingPartial evidence	London, United KingdomHQ checked Sep 5, 2026	201-500	146
	“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: company website · checked Sep 5, 2026
12	CrimtanStrong evidence	London, United KingdomHQ checked Sep 5, 2026	51-200	130
	“Crimtan was established in 2009 with a clear mission: to be a trusted partner for brands navigating the complex world of programmatic advertising.” Source: company website · checked Sep 5, 2026
13	ZenithIndirect evidence	London, United KingdomHQ checked Sep 5, 2026	5,001-10,000	126
	“Zenith is the ROI Agency.” Source: company website · checked Sep 5, 2026
14	PermutiveIndirect evidence	London, United KingdomHQ checked Sep 5, 2026	51-200	122
	“Permutive is the predictive collaboration platform enabling Walled Garden outcomes on the Open Internet.” Source: company website · checked Sep 5, 2026
15	The Kite FactoryIndirect evidence	London, United KingdomHQ checked Sep 5, 2026	51-200	111
	“We’re The Kite Factory, the independent media agency built on Values and Velocity.” Source: company website · checked Sep 5, 2026
16	The Media ImageIndirect evidence	London, United KingdomHQ checked Sep 5, 2026	51-200	108
	“TMI is an independent global performance marketing agency built for complexity, scale, and growth.” Source: company website · checked Sep 5, 2026
17	EssencemediacomxIndirect evidence	London, United KingdomHQ checked Sep 5, 2026	501-1,000	103
	“EssenceMediacom is GroupM’s newest and largest agency, committed to delivering breakthroughs for brands in the New Communications Economy.” Source: company website · checked Sep 5, 2026
18	AdmixerPartial evidence	London, United KingdomHQ checked Sep 5, 2026	201-500	99
	“Admixer is an independent adtech company that develops an ecosystem of full-stack programmatic solutions.” Source: company website · checked Sep 5, 2026
19	The Media PeopleIndirect evidence	London, United KingdomHQ checked Sep 5, 2026	11-50	83
	“Powered by our people, our campaigns put your audience first.” Source: company website · checked Sep 5, 2026
20	ONE Agency MediaIndirect evidence	Manchester, United KingdomHQ checked Sep 5, 2026	11-50	75
	“One Agency: Creating, Delivering and Connecting brands.” Source: company website · checked Sep 5, 2026
21	S4 Capital GroupPartial evidence	London, United KingdomHQ checked Sep 5, 2026	5,001-10,000	74
	“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: company website · checked Sep 5, 2026
22	Nest CommerceIndirect evidence	London, United KingdomHQ checked Sep 5, 2026	51-200	69
	“Nest Commerce is a technology-led agency working with brands like Urban Outfitters, Hims and Damson Madder.” Source: company website · checked Sep 5, 2026
23	AMAIndirect evidence	London, United KingdomHQ checked Sep 5, 2026	11-50	59
	“AMA is the leader in Dynamic Creative for audio.” Source: company website · checked Sep 5, 2026
24	ROASTIndirect evidence	London, United KingdomHQ checked Sep 5, 2026	51-200	57
	“We are ROAST.” Source: company website · checked Sep 5, 2026

Showing 24 of 796 programmatic advertising agencies based in the United Kingdom

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Programmatic advertising agencies based in the United Kingdom at a glance

As of Sep 5, 2026

1-10Median size (employees)

LondonLargest hub · 442 HQs

3,150Contacts with mobile numbers

Sep 5, 2026Data refreshed

Companies by employee count

1-10

438

11-50

260

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Verified emails by last verification

0–30

5,961

31–60

382

61–90

90–180

180+

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 programmatic advertising agencies, so some rows will be adjacent to the category rather than pure plays. The description and evidence 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 SmartSearch, 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 “programmatic advertising agencies”. Matching reads each company's description, not its industry code or its name.
What we exclude: Companies whose own description does not clearly place them among programmatic advertising agencies, 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 an evidence 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, 6,399 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 5, 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.

Programmatic advertising agencies by metro

Programmatic advertising agencies in London442
Programmatic advertising agencies in Manchester34

Frequently asked

How many programmatic advertising agencies are there based in the United Kingdom?

RevenueBase identified 796 programmatic advertising agencies 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 programmatic advertising agencies?

London leads with 442 headquartered companies, followed by Manchester (34) and Birmingham (13).

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 6,399 verified decision-maker contacts tracked across these 796 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 5, 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.