Company lists · Data refreshed September 2026

Top 25 Inbound marketing agencies based in London, United Kingdom

Name: Inbound marketing 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 14, 2026 669 companies tracked

RevenueBase identified 669 inbound marketing agencies headquartered in London, United Kingdom as of September 2026 and tracks 10,407 professional contacts across them, including 1,107 with verified work emails. Across the United Kingdom, London is the largest hub for this category.

This list covers inbound marketing agencies headquartered in London, 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, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 14, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 RevenueBase Smart Search rating on every row Refreshed Sep 14, 2026 86% judged on-target in blind review

669Companies

10,407Contacts tracked

1,107Verified emails

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The 25 largest inbound marketing agencies based in London, United Kingdom

Ranked by team size

Top 25 of 669 inbound marketing agencies based in London, United Kingdom, ranked by team size, largest first. Data refreshed Sep 14, 2026. RevenueBase Smart Search rates how each company's information relates to inbound marketing agencies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	MVF	Indirect evidence	London, United KingdomHQ checked Sep 14, 2026	201-500	401 contacts →
	Indirect evidence “MVF powers growth for our clients by connecting them to potential customers.” Source: RevenueBase Database · checked Sep 14, 2026
2	Publicis PRO	Partial evidence	London, United KingdomHQ checked Sep 14, 2026	51-200	139 contacts →
	Partial evidence “Publicis Pro is the specialist B2B marketing agency within Publicis Groupe, the world's number one marketing holding group.” Source: RevenueBase Database · checked Sep 14, 2026
3	MOI Global	Indirect evidence	London, United KingdomHQ checked Sep 14, 2026	51-200	111 contacts →
	Indirect evidence “We’re MOI Global – the Not-So-B2B agency.” Source: RevenueBase Database · checked Sep 14, 2026
4	Tigerbond	Partial evidence	London, United KingdomHQ checked Sep 14, 2026	51-200	105 contacts →
	Partial evidence “We’re an integrated marketing agency who are fiercely proud of our work, our clients and our people.” Source: RevenueBase Database · checked Sep 14, 2026
5	Finixio	Partial evidence	London, United KingdomHQ checked Sep 14, 2026	51-200	96 contacts →
	Partial evidence “Finixio is UK based remote first Marketing & SEO Agency helping clients all over the world.” Source: RevenueBase Database · checked Sep 14, 2026
6	Internal Results	Indirect evidence	London, United KingdomHQ checked Sep 14, 2026	201-500	88 contacts →
	Indirect evidence “The B2B Customer Acquisition Specialists Internal Results specialize in generating leads, promoting content, and driving brand awareness for B2B organizations worldwide through…” Source: RevenueBase Database · checked Sep 14, 2026
7	Publitek	Indirect evidence	London, United KingdomHQ checked Sep 14, 2026	51-200	85 contacts →
	Indirect evidence “Publitek is now part of Pretzl.” Source: RevenueBase Database · checked Sep 14, 2026
8	Starberry	Indirect evidence	London, United KingdomHQ checked Sep 14, 2026	51-200	70 contacts →
	Indirect evidence “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: RevenueBase Database · checked Sep 14, 2026
9	GA Agency	Partial evidence	London, United KingdomHQ checked Sep 14, 2026	51-200	70 contacts →
	Partial evidence “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: RevenueBase Database · checked Sep 14, 2026
10	The Marketing Practice	Partial evidence	London, United KingdomHQ checked Sep 14, 2026	501-1,000	51 contacts →
	Partial evidence “At The Marketing Practice, we’ve combined the best B2B specialists from across the globe in one business, with capabilities that stretch through the funnel, from brand to demand…” Source: RevenueBase Database · checked Sep 14, 2026
11	The Think Tank	Indirect evidence	London, United KingdomHQ checked Sep 14, 2026	11-50	44 contacts →
	Indirect evidence “We are The Think Tank: a fully-integrated, result-oriented agency based in Holborn, London.” Source: RevenueBase Database · checked Sep 14, 2026
12	Bluedot Agency	Partial evidence	London, United KingdomHQ checked Sep 14, 2026	11-50	34 contacts →
	Partial evidence “A disruptive, full-service, award-winning digital marketing & advertising agency for contemporary businesses, specialising in performance marketing, content marketing…” Source: RevenueBase Database · checked Sep 14, 2026
13	Velocity Partners	Partial evidence	London, United KingdomHQ checked Sep 14, 2026	51-200	32 contacts →
	Partial evidence “B2B marketing has a big pipeline problem.” Source: RevenueBase Database · checked Sep 14, 2026
14	Somebody Digital	Indirect evidence	London, United KingdomHQ checked Sep 14, 2026	11-50	32 contacts →
	Indirect evidence “Somebody is a full service digital agency with a one track mind – getting you customers, not just clicks.” Source: RevenueBase Database · checked Sep 14, 2026
15	Iconic Digital Marketing Consultants LTD	Partial evidence	London, United KingdomHQ checked Sep 14, 2026	11-50	30 contacts →
	Partial evidence “Iconic Digital is a leading digital marketing agency based in London, UK.” Source: RevenueBase Database · checked Sep 14, 2026
16	MG Empower	Partial evidence	London, United KingdomHQ checked Sep 14, 2026	51-200	30 contacts →
	Partial evidence “London-based integrated marketing agency, MG Empower is a global collective with diverse expertise and a deep understanding of culture to make work that matters – to brands and…” Source: RevenueBase Database · checked Sep 14, 2026
17	Gripped B2B Digital Marketing Agency For Saas & Tech	Partial evidence	London, United KingdomHQ checked Sep 14, 2026	11-50	29 contacts →
	Partial evidence “Gripped is a digital first sales & marketing agency for B2B SaaS, technology & IT companies.” Source: RevenueBase Database · checked Sep 14, 2026
18	AXONN	Partial evidence	London, United KingdomHQ checked Sep 14, 2026	11-50	29 contacts →
	Partial evidence “Axonn is an established Digital Marketing Agency that specialises in content creation and campaign management.” Source: RevenueBase Database · checked Sep 14, 2026
19	Prominence Marketing Specialists For Recruitment Agencies	Partial evidence	London, United KingdomHQ checked Sep 14, 2026	11-50	29 contacts →
	Partial evidence “Prominence was founded out of the desire to help those in the recruitment sector respond to changes in consumer behaviour, namely the shift towards digital marketing and social…” Source: RevenueBase Database · checked Sep 14, 2026
20	KAU Media Group	Partial evidence	London, United KingdomHQ checked Sep 14, 2026	11-50	27 contacts →
	Partial evidence “KAU Media Group is a full service media agency that deliver compelling digital marketing solutions.” Source: RevenueBase Database · checked Sep 14, 2026
21	Ceek Marketing	Partial evidence	London, United KingdomHQ checked Sep 14, 2026	11-50	26 contacts →
	Partial evidence “CEEK is a strategic digital marketing agency that believes in the power of digital channels to increase revenue by utilising our specialist in-house resources in social media…” Source: RevenueBase Database · checked Sep 14, 2026
22	Local Fame	Partial evidence	London, United KingdomHQ checked Sep 14, 2026	11-50	25 contacts →
	Partial evidence “Local Fame is an internet marketing agency in London established in 2012 by Rune Sovndahl.” Source: RevenueBase Database · checked Sep 14, 2026
23	Agent3 Group	Partial evidence	London, United KingdomHQ checked Sep 14, 2026	51-200	24 contacts →
	Partial evidence “Formed in 2013, the Agent3 Group was an early pioneer of Account-Based Marketing and has spent its first decade helping some of the largest B2B organizations in the world build…” Source: RevenueBase Database · checked Sep 14, 2026
24	Ellipsis	Partial evidence	London, United KingdomHQ checked Sep 14, 2026	11-50	22 contacts →
	Partial evidence “Ellipsis® is a world-class organic inbound lead gen agency.” Source: RevenueBase Database · checked Sep 14, 2026
25	Rooster Punk	Indirect evidence	London, United KingdomHQ checked Sep 14, 2026	11-50	21 contacts →
	Indirect evidence “The only outcome that truly matters in B2B is growth.” Source: RevenueBase Database · checked Sep 14, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: inbound marketing agencies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names inbound marketing agencies.
Partial evidence: Its own public description names part of inbound marketing agencies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name inbound marketing agencies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 669 inbound marketing agencies based in London, United Kingdom

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Inbound marketing agencies based in London, United Kingdom at a glance

As of Sep 14, 2026

10.6%Verified-email coverage

15.6Average contacts per company

1-10Median size (employees)

Sep 14, 2026Page data refreshed

Companies by employee count

1-10

446

11-50

179

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

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 669 companies.

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 RevenueBase Smart Search 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 Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in London, 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.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names inbound marketing agencies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
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 London 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 its RevenueBase Smart Search 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, 1,107 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 14, 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 in the United Kingdom

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names inbound marketing agencies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

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

RevenueBase identified 669 inbound marketing agencies headquartered in London, 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 in the United Kingdom has the most inbound marketing agencies?

London leads the United Kingdom with 669 headquartered companies, followed by Manchester (96) and Birmingham (62).

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 1,107 verified decision-maker contacts tracked across these 669 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 14, 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 Smart Search, 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.