Company lists · Data refreshed September 2026

Top 25 Full service B2B marketing agencies based in the United Kingdom

Name: Full service B2B 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 24, 2026 14,229 companies tracked

RevenueBase identified 14,229 company matches for full service B2B marketing agencies associated with the United Kingdom as of September 2026 and tracks 109,795 professional contacts across them, including 28,421 with verified work emails and 8,732 with mobile numbers. London is the largest hub.

This list covers company matches for full service B2B 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 24, 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 24, 2026 How this list was built

14,229Companies

109,795Contacts tracked

28,421Verified emails

8,732Mobile numbers

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The 25 largest full service B2B marketing agencies based in the United Kingdom

Ranked by team size

Top 25 of 14,229 company matches for full service B2B marketing agencies based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 24, 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	Mediacom	Exact match	London, United KingdomHQ recorded Sep 24, 2026	5,001-10,000	3,247 contacts →
	Exact match “Hello.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
2	APS Group	Exact match	Stockport, United KingdomHQ recorded Sep 24, 2026	501-1,000	1,152 contacts →
	Exact match “We’ve been delivering marketing and communications since 1961.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
3	Uber Agency	Exact match	Leeds, United KingdomHQ recorded Sep 24, 2026	n/a	811 contacts →
	Exact match “Uber means over, above more than.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
4	Digitas UK	Exact match	London, United KingdomHQ recorded Sep 24, 2026	501-1,000	709 contacts →
	Exact match “We are Digitas.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
5	Linney	Exact match	Mansfield, United KingdomHQ recorded Sep 24, 2026	1,001-5,000	649 contacts →
	Exact match “We’re Linney, a connected marketing partner helping brands turn complexity into clarity across digital, physical and ecommerce channels.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
6	Ogilvy UK	Exact match	United KingdomHQ recorded Sep 24, 2026	501-1,000	502 contacts →
	Exact match “Ogilvy UK inspires brands and people to impact the world.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
7	Gravity Global	Exact match	London, United KingdomHQ recorded Sep 24, 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 24, 2026 · View company records in RevenueBase
8	MVF	Exact match	London, United KingdomHQ recorded Sep 24, 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 24, 2026 · View company records in RevenueBase
9	Entourage	Exact match	London, United KingdomHQ recorded Sep 24, 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 24, 2026 · View company records in RevenueBase
10	ADD People	Exact match	Altrincham, United KingdomHQ recorded Sep 24, 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 24, 2026 · View company records in RevenueBase
11	Transmission	Exact match	London, United KingdomHQ recorded Sep 24, 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 24, 2026 · View company records in RevenueBase
12	Newbase	Exact match	London, United KingdomHQ recorded Sep 24, 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 24, 2026 · View company records in RevenueBase
13	Spring Studios	Exact match	London, United KingdomHQ recorded Sep 24, 2026	201-500	279 contacts →
	Exact match “Spring is a global creative agency, headquartered in Europe, devoted to creating the exceptional for the world's most prestigious brands.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
14	Fabrick	Exact match	Maidstone, United KingdomHQ recorded Sep 24, 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 24, 2026 · View company records in RevenueBase
15	Astute.com	Exact match	Bournemouth, United KingdomHQ recorded Sep 24, 2026	201-500	260 contacts →
	Exact match “Welcome to Astute.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
16	Boutique	Exact match	Leeds, United KingdomHQ recorded Sep 24, 2026	n/a	255 contacts →
	Exact match “You Grow.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
17	Once Upon A Time	Exact match	London, United KingdomHQ recorded Sep 24, 2026	51-200	230 contacts →
	Exact match “The only full lifecycle creative agency.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
18	Kitchen	Exact match	London, United KingdomHQ recorded Sep 24, 2026	n/a	229 contacts →
	Exact match “Welcome to Kitchen.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
19	GO Inspire Group	Exact match	Leicester, United KingdomHQ recorded Sep 24, 2026	201-500	210 contacts →
	Exact match “Welcome to Go Inspire - Your Marketing Performance Partner!” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
20	Quantum Marketing	Exact match	Reading, United KingdomHQ recorded Sep 24, 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 24, 2026 · View company records in RevenueBase
21	Bray Leino	Exact match	Devon, United KingdomHQ recorded Sep 24, 2026	201-500	187 contacts →
	Exact match “Increasing the size of your business.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
22	Impression	Exact match	Nottingham, United KingdomHQ recorded Sep 24, 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 24, 2026 · View company records in RevenueBase
23	BIG Group	Exact match	London, United KingdomHQ recorded Sep 24, 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 24, 2026 · View company records in RevenueBase
24	Cc33 Global Limited	Exact match	Sheffield, United KingdomHQ recorded Sep 24, 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 24, 2026 · View company records in RevenueBase
25	Retail Marketing Group RMG	Exact match	Reading, United KingdomHQ recorded Sep 24, 2026	201-500	166 contacts →
	Exact match “We are storytellers, mime-artists, gesticulators.” Recorded in the RevenueBase company graph · Sep 24, 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 “full service B2B 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 14,229 full service B2B marketing agencies based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 28,421 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Full service B2B marketing agencies based in the United Kingdom at a glance

As of Sep 24, 2026

25.9%Verified-email coverage

8.0%Mobile-number coverage

7.7Average contacts per company

1-10Median size (employees)

26.6%Largest-city concentration · London

Sep 24, 2026Page data refreshed

Companies by employee count

1-10

9,298

11-50

2,611

51-200

398

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 26.0d

21,5220–30

6,38631–60

36561–90

2490–180

124180+

Company record updated

Median 89.0d

00–30

12,89131–60

48,00861–90

43,24390–180

5,653180+

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 “full service B2B 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 28,421 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 24, 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.

Full service B2B 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 “full service B2B marketing agencies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many full service B2B marketing agencies are there based in the United Kingdom?

RevenueBase identified 14,229 company matches for full service B2B 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?

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

Which city has the most full service B2B marketing agencies?

London leads with 3785 company records, followed by Manchester (468) and Birmingham (282).

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 28,421 professional contacts with verified work emails tracked across these 14,229 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 24, 2026.

Ready to reach these companies? Verified emails and direct dials for all 14,229 full service B2B 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.