Company lists · Data refreshed September 2026

Top 25 B to b marketing agencies based in the United Kingdom

Name: B to b marketing 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 12,913 companies tracked

RevenueBase identified 12,913 company matches for b to b marketing agencies associated with the United Kingdom as of September 2026 and tracks 97,322 professional contacts across them, including 20,288 with verified work emails and 7,327 with mobile numbers. London is the largest hub.

This list covers company matches for b to b marketing 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

12,913Companies

97,322Contacts tracked

20,288Verified emails

7,327Mobile numbers

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest b to b marketing agencies based in the United Kingdom

Ranked by team size

Top 25 of 12,913 company matches for b to b marketing 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	YELL	Exact match	Reading, United KingdomHQ recorded Sep 23, 2026	501-1,000	1,284 contacts →
	Exact match “Since 1966, we’ve been helping UK businesses grow – from printed ads in the Yellow Pages to powerful, AI-driven digital marketing that delivers real results.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
2	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
3	Gravity Global	Exact match	London, United KingdomHQ recorded Sep 23, 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 23, 2026 · View company records in RevenueBase
4	MVF	Exact match	London, United KingdomHQ recorded Sep 23, 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 23, 2026 · View company records in RevenueBase
5	Entourage	Exact match	London, United KingdomHQ recorded Sep 23, 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 23, 2026 · View company records in RevenueBase
6	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
7	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
8	Fabrick	Exact match	Maidstone, United KingdomHQ recorded Sep 23, 2026	n/a	269 contacts →
	Exact match “Fabrick is the 2021 Construction Marketing Awards Agency of the Year, with 40 years’ experience specialising exclusively in the construction and built environment sectors.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
9	Astute.com	Exact match	Bournemouth, United KingdomHQ recorded Sep 23, 2026	201-500	260 contacts →
	Exact match “Welcome to Astute.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
10	Boutique	Exact match	Leeds, United KingdomHQ recorded Sep 23, 2026	n/a	255 contacts →
	Exact match “You Grow.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
11	GO Inspire Group	Exact match	Leicester, United KingdomHQ recorded Sep 23, 2026	201-500	210 contacts →
	Exact match “Welcome to Go Inspire - Your Marketing Performance Partner!” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
12	Quantum Marketing	Exact match	Reading, United KingdomHQ recorded Sep 23, 2026	51-200	198 contacts →
	Exact match “Quantum Marketing hangs its hat on one simple promise: one agency, one brief, and one measure of success.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
13	Bray Leino	Exact match	Devon, United KingdomHQ recorded Sep 23, 2026	201-500	187 contacts →
	Exact match “Increasing the size of your business.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
14	Account Media	Exact match	London, United KingdomHQ recorded Sep 23, 2026	51-200	186 contacts →
	Exact match “We work exclusively with B2B publishers and lead gen providers.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
15	Cc33 Global Limited	Exact match	Sheffield, United KingdomHQ recorded Sep 23, 2026	201-500	172 contacts →
	Exact match “CC33 is a boutique agency with big ideas providing marketing solutions tailored to specifically meet your sales and marketing needs.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
16	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
17	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
18	Avidity	Exact match	Glasgow, United KingdomHQ recorded Sep 23, 2026	1,001-5,000	149 contacts →
	Exact match “Our purpose is singular: we exist to help brands sell more.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
19	Incredible Marketeer Ites An ISO 9001 2015 Company	Exact match	London, United KingdomHQ recorded Sep 23, 2026	201-500	147 contacts →
	Exact match “It ain't over 'til it's over." This quote applies very aptly to the way Incredible Marketeer works and performs.” 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	CHS	Exact match	Christchurch, United KingdomHQ recorded Sep 23, 2026	51-200	129 contacts →
	Exact match “We connect brands with customers.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase
24	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
25	GCL	Exact match	Birmingham, United KingdomHQ recorded Sep 23, 2026	51-200	119 contacts →
	Exact match “GCL, with its unique, non-scripted approach to telemarketing and related marketing services, has for over 30 years established an enviable reputation for providing winning lead…” 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 “b to b 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 12,913 b to b marketing agencies based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 20,288 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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B to b marketing agencies based in the United Kingdom at a glance

As of Sep 23, 2026

20.8%Verified-email coverage

7.5%Mobile-number coverage

7.5Average contacts per company

1-10Median size (employees)

21.3%Largest-city concentration · London

Sep 23, 2026Page data refreshed

Companies by employee count

1-10

7,463

11-50

1,935

51-200

287

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

15,3910–30

4,54131–60

25061–90

1790–180

89180+

Company record updated

Median 89.0d

00–30

10,74631–60

45,37461–90

36,50690–180

4,696180+

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 “b to b 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 20,288 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.

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

How many b to b marketing agencies are there based in the United Kingdom?

RevenueBase identified 12,913 company matches for b to b marketing 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?

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

Which city has the most b to b marketing agencies?

London leads with 2755 company records, followed by Manchester (371) and Birmingham (227).

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 20,288 professional contacts with verified work emails tracked across these 12,913 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 12,913 b to b marketing 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.