Company lists · Data refreshed September 2026

Top 25 B2B digital advertising agencies based in the United Kingdom

Name: B2B digital 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 23, 2026 4,555 companies tracked

RevenueBase identified 4,555 company matches for B2B digital advertising agencies associated with the United Kingdom as of September 2026 and tracks 56,263 professional contacts across them, including 13,669 with verified work emails and 5,643 with mobile numbers. London is the largest hub.

This list covers company matches for B2B digital advertising agencies associated with the 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

4,555Companies

56,263Contacts tracked

13,669Verified emails

5,643Mobile numbers

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The 25 largest B2B digital advertising agencies based in the United Kingdom

Ranked by team size

Top 25 of 4,555 company matches for B2B digital advertising agencies based in the 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.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Publicis Media	Exact match	London, United KingdomHQ recorded Sep 23, 2026	10001+	6,901 contacts →
	Exact match “Publicis Media harnesses the power of modern media through leading agency brands Dysrupt, Infinite Roar, Publicis Collective, Publicis Health Media, Spark Foundry, Starcom and…” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
2	Zenith	Exact match	London, United KingdomHQ recorded Sep 23, 2026	5,001-10,000	4,133 contacts →
	Exact match “Zenith is the ROI Agency.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
3	Iprospect	Exact match	London, United KingdomHQ recorded Sep 23, 2026	5,001-10,000	2,366 contacts →
	Exact match “iProspect, a dentsu company, is a leading global digital-first media agency.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
4	Digitas UK	Exact match	London, United KingdomHQ recorded Sep 23, 2026	501-1,000	709 contacts →
	Exact match “We are Digitas.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
5	MG OMD	Exact match	London, United KingdomHQ recorded Sep 23, 2026	201-500	527 contacts →
	Exact match “MG OMD, part of Omnicom Media, brings innovation, insight and creativity to the world of media.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
6	M C Saatchi Performance	Exact match	London, United KingdomHQ recorded Sep 23, 2026	201-500	457 contacts →
	Exact match “We are a Global digital media agency specializing in taking a human approach to connecting brands with people across all channels.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
7	Essencemediacom UK	Exact match	London, United KingdomHQ recorded Sep 23, 2026	501-1,000	416 contacts →
	Exact match “EssenceMediacom is WPP Media's newest and largest agency, committed to delivering breakthroughs for brands in the New Communications Economy.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
8	Loopme	Exact match	London, United KingdomHQ recorded Sep 23, 2026	201-500	401 contacts →
	Exact match “LoopMe is bringing brands into apps, powered by AI agents.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
9	BLIS	Exact match	London, United KingdomHQ recorded Sep 23, 2026	201-500	344 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
10	ADD People	Exact match	Altrincham, United KingdomHQ recorded Sep 23, 2026	201-500	292 contacts →
	Exact match “We’re Add People, a team of digital marketing professionals dedicated to helping small to medium-sized businesses grow online.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
11	Transmission	Exact match	London, United KingdomHQ recorded Sep 23, 2026	201-500	289 contacts →
	Exact match “We deliver full-service B2B marketing solutions for world-class customer experiences – with an eye always toward the future.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
12	Newbase	Exact match	London, United KingdomHQ recorded Sep 23, 2026	501-1,000	282 contacts →
	Exact match “At NewBase we provide expert and independent marketing and advertising services across all media channels globally.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
13	Brave Bison	Exact match	London, United KingdomHQ recorded Sep 23, 2026	201-500	210 contacts →
	Exact match “A world where complexity is the only constant demands a new breed of company.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
14	Impression	Exact match	Nottingham, United KingdomHQ recorded Sep 23, 2026	51-200	182 contacts →
	Exact match “We're a performance marketing agency setting the new standard of excellence through our people, our performance and our technology, with offices in Manchester, Nottingham, London…” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
15	ALL Response Media	Exact match	London, United KingdomHQ recorded Sep 23, 2026	51-200	178 contacts →
	Exact match “All Response Media is the leading performance media planning and buying agency.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
16	BIG Group	Exact match	London, United KingdomHQ recorded Sep 23, 2026	51-200	177 contacts →
	Exact match “Founded in 1991, with offices in Amsterdam, Bath, Dubai and London our award-winning employee-owned company has consistently ranked as one of the UK's leading independent digital…” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
17	Thomson Local	Exact match	Farnborough, United KingdomHQ recorded Sep 23, 2026	201-500	162 contacts →
	Exact match “Think Local, Think Thomsonlocal!” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
18	Expandi Group	Exact match	London, United KingdomHQ recorded Sep 23, 2026	201-500	155 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
19	Invibes Advertising	Exact match	London, United KingdomHQ recorded Sep 23, 2026	201-500	146 contacts →
	Exact match “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.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
20	Publicis PRO	Exact match	London, United KingdomHQ recorded Sep 23, 2026	51-200	139 contacts →
	Exact match “Publicis Pro is the specialist B2B marketing agency within Publicis Groupe, the world's number one marketing holding group.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
21	TBT Marketing	Exact match	Frome, United KingdomHQ recorded Sep 23, 2026	51-200	138 contacts →
	Exact match “The B2B marketing agency built for complex tech sales.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
22	METIA	Exact match	London, United KingdomHQ recorded Sep 23, 2026	201-500	132 contacts →
	Exact match “Metia is a global marketing agency with offices in London, Seattle, Austin and Singapore.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
23	Crimtan	Exact match	London, United KingdomHQ recorded Sep 23, 2026	51-200	130 contacts →
	Exact match “Crimtan was established in 2009 with a clear mission: to be a trusted partner for brands navigating the complex world of programmatic advertising.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
24	NRI	Exact match	London, United KingdomHQ recorded Sep 23, 2026	201-500	126 contacts →
	Exact match “NRi Digital creates design-led digital content for B2B and commercial markets.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
25	Modern	Exact match	Bristol, United KingdomHQ recorded Sep 23, 2026	11-50	120 contacts →
	Exact match “Modern is an award-winning B2B Marketing Consultancy.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “B2B digital advertising agencies”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 4,555 B2B digital advertising agencies based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 13,669 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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B2B digital advertising agencies based in the United Kingdom at a glance

As of Sep 23, 2026

24.3%Verified-email coverage

10.0%Mobile-number coverage

12.4Average contacts per company

1-10Median size (employees)

36.5%Largest-city concentration · London

Sep 23, 2026Page data refreshed

Companies by employee count

1-10

3,199

11-50

1,092

51-200

184

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Freshness & accuracy

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

Email last verified

Median 25.0d

10,4070–30

3,00031–60

16661–90

790–180

89180+

Company record updated

Median 84.5d

00–30

10,16831–60

26,69661–90

15,93990–180

3,460180+

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 the United Kingdom whose business descriptions match “B2B digital advertising agencies” 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 13,669 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.

B2B digital advertising agencies by metro

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 “B2B digital advertising agencies”; each Exact match badge shows search membership, not an individual similarity or quality score.

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

RevenueBase identified 4,555 company matches for B2B digital advertising agencies associated with the 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?

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

Which city has the most B2B digital advertising agencies?

London leads with 1663 company records, followed by Manchester (199) and Birmingham (100).

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 13,669 professional contacts with verified work emails tracked across these 4,555 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.

Ready to reach these companies? Verified emails and direct dials for all 4,555 B2B digital advertising agencies based in the United Kingdom. Start with a free account, no credit card.

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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.