Company lists · Data refreshed September 2026

Top 25 Inbound marketing agencies based in the United Kingdom

Name: Inbound 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 3, 2026 2,448 companies tracked

RevenueBase identified 2,448 inbound marketing agencies headquartered in the United Kingdom as of September 2026 and tracks 22,288 professional contacts across them, including 4,751 with verified work emails and 1,722 with mobile numbers. London is the largest hub.

This list covers inbound marketing agencies headquartered in the United Kingdom, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, how directly it supports the match, and when it was last checked. Data refreshed September 3, 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 HQ checked on every row Match evidence on every row Refreshed Sep 3, 2026 86% judged on-target in blind review

2,448Companies

22,288Contacts tracked

4,751Verified emails

1,722Mobile numbers

Unlock all 2,448 companies Free signup · no credit card · 500 free credits

The 25 largest inbound marketing agencies based in the United Kingdom

Ranked by team size

Top 25 of 2,448 inbound marketing agencies based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 3, 2026. Evidence rates how directly each company's own description names inbound marketing agencies: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#	Company	Headquarters	Employees	Contacts
1	MVFIndirect evidence	London, United KingdomHQ checked Sep 3, 2026	201-500	417
	“MVF powers growth for our clients by connecting them to potential customers.” Source: company website · checked Sep 3, 2026
2	EntourageIndirect evidence	London, United KingdomHQ checked Sep 3, 2026	51-200	363
	“In a world where everyone’s shouting the same thing, whisper something truly distinctive in all the right ears.” Source: company website · checked Sep 3, 2026
3	Quantum MarketingPartial evidence	Reading, United KingdomHQ checked Sep 3, 2026	51-200	198
	“Quantum Marketing hangs its hat on one simple promise: one agency, one brief, and one measure of success.” Source: company website · checked Sep 3, 2026
4	ImpressionPartial evidence	Nottingham, United KingdomHQ checked Sep 3, 2026	51-200	183
	“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…” Source: company website · checked Sep 3, 2026
5	Publicis PROPartial evidence	London, United KingdomHQ checked Sep 3, 2026	51-200	140
	“Publicis Pro is the specialist B2B marketing agency within Publicis Groupe, the world's number one marketing holding group.” Source: company website · checked Sep 3, 2026
6	TBT MarketingPartial evidence	Frome, United KingdomHQ checked Sep 3, 2026	51-200	138
	“The B2B marketing agency built for complex tech sales.” Source: company website · checked Sep 3, 2026
7	CHSIndirect evidence	Christchurch, United KingdomHQ checked Sep 3, 2026	51-200	129
	“We connect brands with customers.” Source: company website · checked Sep 3, 2026
8	AIR MarketingPartial evidence	Exeter, United KingdomHQ checked Sep 3, 2026	51-200	123
	“Since 2016, Air Marketing has been the trusted outsourced sales and lead generation agency in the UK for ambitious B2B businesses.” Source: company website · checked Sep 3, 2026
9	DurhamlaneIndirect evidence	Newcastle Upon Tyne, United KingdomHQ checked Sep 3, 2026	51-200	114
	“More than SDR Outsourcing.” Source: company website · checked Sep 3, 2026
10	TigerbondPartial evidence	London, United KingdomHQ checked Sep 3, 2026	51-200	105
	“We’re an integrated marketing agency who are fiercely proud of our work, our clients and our people.” Source: company website · checked Sep 3, 2026
11	The SEO WorksPartial evidence	Sheffield, United KingdomHQ checked Sep 3, 2026	51-200	104
	“The SEO Works are an award-winning provider of search marketing, websites and paid social for leading brands and prospering SME’s.” Source: company website · checked Sep 3, 2026
12	Pursuit MarketingPartial evidence	Glasgow, United KingdomHQ checked Sep 3, 2026	51-200	96
	“Pursuit Marketing are Experts in Demand Generation, Telemarketing, Digital Marketing and Creative Design - your 360 Marketing Provider.” Source: company website · checked Sep 3, 2026
13	BrainsoulsIndirect evidence	Birmingham, United KingdomHQ checked Sep 3, 2026	51-200	81
	Source: company website · checked Sep 3, 2026
14	StickyeyesPartial evidence	Leeds, United KingdomHQ checked Sep 3, 2026	201-500	78
	“Search Marketing \| Content \| Strategy Delivered by passionate people.” Source: company website · checked Sep 3, 2026
15	Paramount Digital LTDIndirect evidence	St Helens, United KingdomHQ checked Sep 3, 2026	11-50	77
	“Simple.” Source: company website · checked Sep 3, 2026
16	OMNEPartial evidence	Ampthill, United KingdomHQ checked Sep 3, 2026	51-200	72
	“B2B Marketing Agency of the Year 2025 A Top 10 UK B2B Agency, 2025/2026 Expertise is everything.” Source: company website · checked Sep 3, 2026
17	GA AgencyPartial evidence	London, United KingdomHQ checked Sep 3, 2026	51-200	72
	“GA Agency is an award-winning digital marketing agency helping brands all over the world grow their business and revenue in the online space.” Source: company website · checked Sep 3, 2026
18	StarberryIndirect evidence	London, United KingdomHQ checked Sep 3, 2026	51-200	70
	“Starberry is a decentralised global digital agency specialising in brand strategy, web design and lead generation for estate agents, new homes developers and the proptech industry.” Source: company website · checked Sep 3, 2026
19	Creative MediaPartial evidence	London, United KingdomHQ checked Sep 3, 2026	51-200	70
	“Creative Media is a global marketing agency specializing in B2B lead generation.” Source: company website · checked Sep 3, 2026
20	MABOPartial evidence	Middlesbrough, United KingdomHQ checked Sep 3, 2026	51-200	69
	“Unlock exceptional business growth with Mabo - an award-winning digital marketing agency specialist in paid search, social media, search engine optimisation (SEO) and Amazon…” Source: company website · checked Sep 3, 2026
21	Armstrongb2bPartial evidence	Chester, United KingdomHQ checked Sep 3, 2026	51-200	67
	“ArmstrongB2B® is a B2B marketing agency for industrial and manufacturing brands, with offices in the UK and USA.” Source: company website · checked Sep 3, 2026
22	Hunterlodge AdvertisingPartial evidence	Rickmansworth, United KingdomHQ checked Sep 3, 2026	51-200	67
	“Hunterlodge Advertising is an integrated marketing agency focused on delivering measurable outcomes through strategy, creative, content, media, digital, and technology.” Source: company website · checked Sep 3, 2026
23	PropellernetPartial evidence	Brighton, United KingdomHQ checked Sep 3, 2026	51-200	66
	“We are search experts, storytellers and strategists – trusted by ambitious brands to deliver performance and brand marketing that fuels growth.” Source: company website · checked Sep 3, 2026
24	HallamPartial evidence	Nottingham, United KingdomHQ checked Sep 3, 2026	51-200	66
	“We’re the B2B marketing agency helping brands capture attention, build trust and be chosen before the search begins.” Source: company website · checked Sep 3, 2026
25	Unity OnlineIndirect evidence	Needham Market, United KingdomHQ checked Sep 3, 2026	51-200	55
	“At Unity Online, we exist to help businesses of all shapes and sizes achieve real success online.” Source: company website · checked Sep 3, 2026

Showing 25 of 2,448 inbound marketing agencies based in the United Kingdom

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Inbound marketing agencies based in the United Kingdom at a glance

As of Sep 3, 2026

1-10Median size (employees)

LondonLargest hub · 700 HQs

1,722Contacts with mobile numbers

Sep 3, 2026Data refreshed

Companies by employee count

1-10

1,808

11-50

531

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Verified emails by last verification

0–30

31–60

397

61–90

2,651

90–180

1,676

180+

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among inbound marketing agencies, so some rows will be adjacent to the category rather than pure plays. The description and evidence rating on every row are there so you can check each match yourself.

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: Companies headquartered in the United Kingdom whose own description of what they do matches “inbound marketing agencies”. Matching reads each company's description, not its industry code or its name.
What we exclude: Companies whose own description does not clearly place them among inbound marketing agencies, and records with no verified work email. Companies headquartered outside United Kingdom are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and an evidence rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
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 listed company carries at least one verified work email, 4,751 across the full list. 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 3, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Inbound marketing agencies by metro

Frequently asked

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

RevenueBase identified 2,448 inbound marketing agencies headquartered in the United Kingdom as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

MVF, headquartered in London, tops this list with the largest team on record.

Which city has the most inbound marketing agencies?

London leads with 700 headquartered companies, followed by Manchester (110) and Birmingham (71).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 4,751 verified decision-maker contacts tracked across these 2,448 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 3, 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.