Company lists · Data refreshed September 2026

Top 24 B2B marketing communications agencies based in London, United Kingdom

Name: B2B marketing communications 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 23, 2026 1,815 companies tracked

RevenueBase identified 1,815 company matches for B2B marketing communications agencies associated with London, United Kingdom as of September 2026 and tracks 22,860 professional contacts across them, including 4,338 with verified work emails. Across the United Kingdom, London is the largest hub for this category.

This list covers company matches for B2B marketing communications 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 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

1,815Companies

22,860Contacts tracked

4,338Verified emails

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The 24 largest B2B marketing communications agencies based in London, United Kingdom

Ranked by team size

Top 24 of 1,815 company matches for B2B marketing communications agencies 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.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	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
2	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
3	Premier	Exact match	London, United KingdomHQ recorded Sep 23, 2026	51-200	272 contacts →
	Exact match “Creative communications for entertainment, arts and culture.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
4	SMP Group	Exact match	London, United KingdomHQ recorded Sep 23, 2026	201-500	221 contacts →
	Exact match “We are an insight led marketing communications team, delivering leading innovations and experiences that are proven to drive business growth.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
5	Havas People	Exact match	London, United KingdomHQ recorded Sep 23, 2026	201-500	170 contacts →
	Exact match “At Havas People we shape meaningful brands for the changing worlds of work and study.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
6	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
7	ART Studio	Exact match	London, United KingdomHQ recorded Sep 23, 2026	11-50	139 contacts →
	Exact match “A communication agency specialising in advertising, public relations, and digital media, Artbees' art studio has been in existence since 2006.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
8	Instinctif Partners	Exact match	London, United KingdomHQ recorded Sep 23, 2026	201-500	130 contacts →
	Exact match “Instinctif UK has officially rebranded to TEAM LEWIS.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
9	Battenhall	Exact match	London, United KingdomHQ recorded Sep 23, 2026	51-200	112 contacts →
	Exact match “Battenhall is an award-winning communications agency for the social media age.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
10	MOI Global	Exact match	London, United KingdomHQ recorded Sep 23, 2026	51-200	111 contacts →
	Exact match “We’re MOI Global – the Not-So-B2B agency.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
11	John DOE	Exact match	London, United KingdomHQ recorded Sep 23, 2026	51-200	99 contacts →
	Exact match “John Doe is a creative agency that makes the unknown, known.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
12	FOX Agency	Exact match	London, United KingdomHQ recorded Sep 23, 2026	51-200	95 contacts →
	Exact match “Fox Agency is an integrated agency for global B2B tech brands on a mission: To grow, expand, transform, accelerate, go-to-market, get investment.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
13	Sunday	Exact match	London, United KingdomHQ recorded Sep 23, 2026	51-200	93 contacts →
	Exact match “Sunday is an independent content marketing agency based in London.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
14	Ledger Bennett	Exact match	London, United KingdomHQ recorded Sep 23, 2026	51-200	93 contacts →
	Exact match “We’re Ledger Bennett.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
15	The PHA Group	Exact match	London, United KingdomHQ recorded Sep 23, 2026	51-200	92 contacts →
	Exact match “PHA is an award-winning earned-first integrated communications agency.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
16	Internal Results	Exact match	London, United KingdomHQ recorded Sep 23, 2026	201-500	88 contacts →
	Exact match “The B2B Customer Acquisition Specialists Internal Results specialize in generating leads, promoting content, and driving brand awareness for B2B organizations worldwide through…” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
17	Konica Minolta Marketing Services	Exact match	London, United KingdomHQ recorded Sep 23, 2026	501-1,000	87 contacts →
	Exact match “Head to Indicia Worldwide for our exciting new profile, packed with great content.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
18	BBN	Exact match	London, United KingdomHQ recorded Sep 23, 2026	1,001-5,000	86 contacts →
	Exact match “THIS IS B2B WITHOUT BORDERS THIS IS BBN BBN breaks boundaries.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
19	Publitek	Exact match	London, United KingdomHQ recorded Sep 23, 2026	51-200	85 contacts →
	Exact match “Publitek is now part of Pretzl.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
20	The Specialist Works B Corp	Exact match	London, United KingdomHQ recorded Sep 23, 2026	51-200	85 contacts →
	Exact match “The Specialist Works is built exclusively for marketers at entrepreneurial brands.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
21	Propeller Group	Exact match	London, United KingdomHQ recorded Sep 23, 2026	51-200	71 contacts →
	Exact match “Propeller Group is a global B2B agency with an integrated approach to PR, content, and growth marketing.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
22	FST	Exact match	London, United KingdomHQ recorded Sep 23, 2026	11-50	70 contacts →
	Exact match “We get B2B brands noticed in a world that isn’t looking” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
23	Clarion Communications	Exact match	London, United KingdomHQ recorded Sep 23, 2026	51-200	69 contacts →
	Exact match “At Clarion Communications, we don't just solve brand problems; we seize opportunities that elevate brands to new heights.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
24	Fight OR Flight	Exact match	London, United KingdomHQ recorded Sep 23, 2026	51-200	67 contacts →
	Exact match “Today, B2B brands battle for attention in the same crowded space as everything else.” 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 marketing communications 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 24 of 1,815 B2B marketing communications agencies based in London, United Kingdom

See the full list, filter by size, metro and specialty, and access 4,338 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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B2B marketing communications agencies based in London, United Kingdom at a glance

As of Sep 23, 2026

19.0%Verified-email coverage

12.6Average contacts per company

1-10Median size (employees)

Sep 23, 2026Page data refreshed

Companies by employee count

1-10

1,327

11-50

392

51-200

201-500

501-1,000

1,001-5,000

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 1,815 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 “B2B marketing communications 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 4,338 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 marketing communications 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 “B2B marketing communications agencies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many B2B marketing communications agencies are there based in London, United Kingdom?

RevenueBase identified 1,815 company matches for B2B marketing communications 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?

Digitas UK 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 B2B marketing communications agencies?

London leads the United Kingdom with 1,815 company records, followed by Manchester (230) and Birmingham (133).

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 4,338 professional contacts with verified work emails tracked across these 1,815 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.