Company lists · Data refreshed September 2026

Top 25 Co-marketing agencies based in London, United Kingdom

Name: Co-marketing agencies based in London, United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 5,655 companies tracked

RevenueBase identified 5,655 company matches for co-marketing agencies associated with London, United Kingdom as of September 2026 and tracks 113,595 professional contacts across them, including 25,906 with verified work emails. Across the United Kingdom, London is the largest hub for this category.

This list covers company matches for co-marketing agencies 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 28, 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 28, 2026 How this list was built

5,655Companies

113,595Contacts tracked

25,906Verified emails

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The 25 largest co-marketing agencies based in London, United Kingdom

Ranked by team size

Top 25 of 5,655 company matches for co-marketing agencies based in London, United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 28, 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	HH Global	Exact match	London, United KingdomHQ recorded Sep 28, 2026	1,001-5,000	5,657 contacts →
	Exact match “HH Global is the global leader in tech-enabled creative production and procurement.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
2	IMG	Exact match	London, United KingdomHQ recorded Sep 28, 2026	1,001-5,000	3,953 contacts →
	Exact match “IMG is a leading global sports marketing agency, powering growth of revenues, fanbases and IP for more than 250 rightsholders.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
3	Essencemediacom	Exact match	London, United KingdomHQ recorded Sep 28, 2026	10001+	3,692 contacts →
	Exact match “We discover the breakthroughs that brands need to win.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
4	CARAT	Exact match	London, United KingdomHQ recorded Sep 28, 2026	5,001-10,000	2,182 contacts →
	Exact match “Carat is the world’s first media agency and is privileged to work with some of today’s most storied and innovative brands.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
5	Dentsu X	Exact match	London, United KingdomHQ recorded Sep 28, 2026	5,001-10,000	941 contacts →
	Exact match “Welcome to dentsu X.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
6	VCCP	Exact match	London, United KingdomHQ recorded Sep 28, 2026	501-1,000	820 contacts →
	Exact match “VCCP is the global challenger network for challenger brands.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
7	Digitas UK	Exact match	London, United KingdomHQ recorded Sep 28, 2026	501-1,000	709 contacts →
	Exact match “We are Digitas.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
8	CROUD	Exact match	London, United KingdomHQ recorded Sep 28, 2026	501-1,000	643 contacts →
	Exact match “We're an independent global media, creative, and data agency helping our clients make their next best move.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
9	Influencer	Exact match	London, United KingdomHQ recorded Sep 28, 2026	201-500	640 contacts →
	Exact match “Influencer is a global creator marketing agency on a mission to shape the future of marketing by humanizing brands.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
10	Karla Otto	Exact match	London, United KingdomHQ recorded Sep 28, 2026	201-500	524 contacts →
	Exact match “WHO WE ARE Founded in 1982, Karla Otto is a full-service brand-building agency, operating from fifteen cities across the globe, Milan, Paris, London, Munich, Dubai, Riyadh…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
11	AMV Bbdo	Exact match	London, United KingdomHQ recorded Sep 28, 2026	201-500	459 contacts →
	Exact match “We are a creative agency that solves big business problems for brands with big ambitions.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
12	M C Saatchi Performance	Exact match	London, United KingdomHQ recorded Sep 28, 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 28, 2026 · View company records in RevenueBase
13	SMG	Exact match	London, United KingdomHQ recorded Sep 28, 2026	201-500	455 contacts →
	Exact match “We’re the original pioneers in connected commerce marketing.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
14	Gravity Global	Exact match	London, United KingdomHQ recorded Sep 28, 2026	501-1,000	422 contacts →
	Exact match “Hi, we're Gravity - the world’s most awarded brand-to-demand marketing agency!” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
15	MVF	Exact match	London, United KingdomHQ recorded Sep 28, 2026	201-500	401 contacts →
	Exact match “MVF powers growth for our clients by connecting them to potential customers.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
16	Entourage	Exact match	London, United KingdomHQ recorded Sep 28, 2026	51-200	370 contacts →
	Exact match “In a world where everyone’s shouting the same thing, whisper something truly distinctive in all the right ears.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
17	Bulletproof	Exact match	London, United KingdomHQ recorded Sep 28, 2026	201-500	358 contacts →
	Exact match “Bulletproof is the world’s largest independent brand agency, creating desire through disruption to accelerate growth, drive standout, and fuel fandom.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
18	Fast Track	Exact match	London, United KingdomHQ recorded Sep 28, 2026	51-200	354 contacts →
	Exact match “Fast Track works with major brands and Governing Bodies to develop and implement strategies that drive business through sport.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
19	Blackjack Promotions	Exact match	London, United KingdomHQ recorded Sep 28, 2026	1,001-5,000	348 contacts →
	Exact match “Blackjack are specialists in human connection, with expertise in the creation, delivery and deployment of travel retail and experiential campaigns.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
20	FUSE	Exact match	London, United KingdomHQ recorded Sep 28, 2026	51-200	306 contacts →
	Exact match “Culturally Connected, Seriously Effective.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
21	DMS	Exact match	London, United KingdomHQ recorded Sep 28, 2026	51-200	299 contacts →
	Exact match “WE ARE A GLOBAL CREATIVE DIGITAL AGENCY At DMS, we bring together a powerhouse of creative, media intelligence and digital disciplines under one roof to support world-class…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
22	The7stars	Exact match	London, United KingdomHQ recorded Sep 28, 2026	201-500	295 contacts →
	Exact match “the7stars is the UK’s largest independent media agency, offering the best people, the best service and the best creative media campaigns.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
23	Transmission	Exact match	London, United KingdomHQ recorded Sep 28, 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 28, 2026 · View company records in RevenueBase
24	Newbase	Exact match	London, United KingdomHQ recorded Sep 28, 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 28, 2026 · View company records in RevenueBase
25	OK Cool	Exact match	London, United KingdomHQ recorded Sep 28, 2026	51-200	259 contacts →
	Exact match “Strategic and (very) creative partners to the world’s leading brands.” Recorded in the RevenueBase company graph · Sep 28, 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 “co-marketing 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 5,655 co-marketing agencies based in London, United Kingdom

See the full list, filter by size, metro and specialty, and access 25,906 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Co-marketing agencies based in London, United Kingdom at a glance

As of Sep 28, 2026

22.8%Verified-email coverage

20.1Average contacts per company

1-10Median size (employees)

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

3,801

11-50

1,428

51-200

306

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency for this list is measured across the whole United Kingdom list rather than for London, so it is reported there. Company counts and contact totals on this page are exact for London, over 5,655 companies.

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 “co-marketing 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 25,906 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 28, 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.

Co-marketing agencies by metro in the United Kingdom

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 “co-marketing agencies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many co-marketing agencies are there based in London, United Kingdom?

RevenueBase identified 5,655 company matches for co-marketing agencies 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?

HH Global 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 co-marketing agencies?

London leads the United Kingdom with 5,655 company records, followed by Manchester (589) and Birmingham (308).

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 25,906 professional contacts with verified work emails tracked across these 5,655 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 28, 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.