Company lists · Data refreshed September 2026

Top 25 IT B2B marketing agencies based in the United Kingdom

Name: IT 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 26, 2026 5,248 companies tracked

RevenueBase identified 5,248 company matches for IT B2B marketing agencies associated with the United Kingdom as of September 2026 and tracks 49,077 professional contacts across them, including 12,844 with verified work emails and 3,657 with mobile numbers. London is the largest hub.

This list covers company matches for IT 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 26, 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 26, 2026 How this list was built

5,248Companies

49,077Contacts tracked

12,844Verified emails

3,657Mobile numbers

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The 25 largest IT B2B marketing agencies based in the United Kingdom

Ranked by team size

Top 25 of 5,248 company matches for IT B2B marketing agencies based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 26, 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 26, 2026	501-1,000	709 contacts →
	Exact match “We are Digitas.” Recorded in the RevenueBase company graph · Sep 26, 2026 · View company records in RevenueBase
2	Linney	Exact match	Mansfield, United KingdomHQ recorded Sep 26, 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 26, 2026 · View company records in RevenueBase
3	B2B Marketing	Exact match	London, United KingdomHQ recorded Sep 26, 2026	n/a	453 contacts →
	Exact match “B2B Marketing is a professional community where all B2B marketers can easily communicate with like-minded industry peers.” Recorded in the RevenueBase company graph · Sep 26, 2026 · View company records in RevenueBase
4	Qualifa	Exact match	Brighton, United KingdomHQ recorded Sep 26, 2026	51-200	440 contacts →
	Exact match “We are an award winning multilingual lead generation and market research service provider for B2B publishing, marketing, events and tech companies.” Recorded in the RevenueBase company graph · Sep 26, 2026 · View company records in RevenueBase
5	Gravity Global	Exact match	London, United KingdomHQ recorded Sep 26, 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 26, 2026 · View company records in RevenueBase
6	MVF	Exact match	London, United KingdomHQ recorded Sep 26, 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 26, 2026 · View company records in RevenueBase
7	Entourage	Exact match	London, United KingdomHQ recorded Sep 26, 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 26, 2026 · View company records in RevenueBase
8	Transmission	Exact match	London, United KingdomHQ recorded Sep 26, 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 26, 2026 · View company records in RevenueBase
9	Fabrick	Exact match	Maidstone, United KingdomHQ recorded Sep 26, 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 26, 2026 · View company records in RevenueBase
10	Astute.com	Exact match	Bournemouth, United KingdomHQ recorded Sep 26, 2026	201-500	260 contacts →
	Exact match “Welcome to Astute.” Recorded in the RevenueBase company graph · Sep 26, 2026 · View company records in RevenueBase
11	Boutique	Exact match	Leeds, United KingdomHQ recorded Sep 26, 2026	n/a	255 contacts →
	Exact match “You Grow.” Recorded in the RevenueBase company graph · Sep 26, 2026 · View company records in RevenueBase
12	GO Inspire Group	Exact match	Leicester, United KingdomHQ recorded Sep 26, 2026	201-500	210 contacts →
	Exact match “Welcome to Go Inspire - Your Marketing Performance Partner!” Recorded in the RevenueBase company graph · Sep 26, 2026 · View company records in RevenueBase
13	Quantum Marketing	Exact match	Reading, United KingdomHQ recorded Sep 26, 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 26, 2026 · View company records in RevenueBase
14	Account Media	Exact match	London, United KingdomHQ recorded Sep 26, 2026	51-200	186 contacts →
	Exact match “We work exclusively with B2B publishers and lead gen providers.” Recorded in the RevenueBase company graph · Sep 26, 2026 · View company records in RevenueBase
15	Impression	Exact match	Nottingham, United KingdomHQ recorded Sep 26, 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 26, 2026 · View company records in RevenueBase
16	Cc33 Global Limited	Exact match	Sheffield, United KingdomHQ recorded Sep 26, 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 26, 2026 · View company records in RevenueBase
17	Retail Marketing Group RMG	Exact match	Reading, United KingdomHQ recorded Sep 26, 2026	201-500	166 contacts →
	Exact match “We are storytellers, mime-artists, gesticulators.” Recorded in the RevenueBase company graph · Sep 26, 2026 · View company records in RevenueBase
18	Inside Global	Exact match	Liverpool, United KingdomHQ recorded Sep 26, 2026	51-200	164 contacts →
	Exact match “Inside is a global agency dedicated to delivering growth and revenue opportunities for B2B tech companies.” Recorded in the RevenueBase company graph · Sep 26, 2026 · View company records in RevenueBase
19	Gekko Group	Exact match	Newbury, United KingdomHQ recorded Sep 26, 2026	201-500	156 contacts →
	Exact match “Gekko are a creative customer experience marketing agency, seeking to create campaigns which enhance the customer journey and our brands sales across retail, B2B and online…” Recorded in the RevenueBase company graph · Sep 26, 2026 · View company records in RevenueBase
20	Expandi Group	Exact match	London, United KingdomHQ recorded Sep 26, 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 26, 2026 · View company records in RevenueBase
21	Avidity	Exact match	Glasgow, United KingdomHQ recorded Sep 26, 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 26, 2026 · View company records in RevenueBase
22	Incredible Marketeer Ites An ISO 9001 2015 Company	Exact match	London, United KingdomHQ recorded Sep 26, 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 26, 2026 · View company records in RevenueBase
23	Publicis PRO	Exact match	London, United KingdomHQ recorded Sep 26, 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 26, 2026 · View company records in RevenueBase
24	TBT Marketing	Exact match	Frome, United KingdomHQ recorded Sep 26, 2026	51-200	138 contacts →
	Exact match “The B2B marketing agency built for complex tech sales.” Recorded in the RevenueBase company graph · Sep 26, 2026 · View company records in RevenueBase
25	The Focus Agency Group	Exact match	London, United KingdomHQ recorded Sep 26, 2026	51-200	134 contacts →
	Exact match “We’re a full-service marketing agency operating across Media.” Recorded in the RevenueBase company graph · Sep 26, 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 “IT 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 5,248 IT B2B marketing agencies based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 12,844 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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IT B2B marketing agencies based in the United Kingdom at a glance

As of Sep 26, 2026

26.2%Verified-email coverage

7.5%Mobile-number coverage

9.4Average contacts per company

1-10Median size (employees)

31.1%Largest-city concentration · London

Sep 26, 2026Page data refreshed

Companies by employee count

1-10

3,794

11-50

1,174

51-200

207

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 28.0d

8,5120–30

4,03231–60

22861–90

1090–180

62180+

Company record updated

Median 92.0d

00–30

5,27631–60

17,82961–90

23,13690–180

2,836180+

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 “IT 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 12,844 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 26, 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.

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

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

RevenueBase identified 5,248 company matches for IT 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?

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

Which city has the most IT B2B marketing agencies?

London leads with 1632 company records, followed by Manchester (206) and Birmingham (118).

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 12,844 professional contacts with verified work emails tracked across these 5,248 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 26, 2026.

Ready to reach these companies? Verified emails and direct dials for all 5,248 IT 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.