Company lists · Data refreshed September 2026

Top 25 Direct marketing firms based in London, United Kingdom

Name: Direct marketing firms based in London, United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 172 companies tracked

RevenueBase identified 172 direct marketing firms headquartered in London, United Kingdom as of September 2026 and tracks 3,027 professional contacts across them, including 210 with verified work emails. London is the largest hub.

This list covers direct marketing firms 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 21, 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 21, 2026 86% judged on-target in blind review

172Companies

3,027Contacts tracked

210Verified emails

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The 25 largest direct marketing firms based in London, United Kingdom

Ranked by team size

Top 25 of 172 direct marketing firms based in London, United Kingdom, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to direct marketing firms: 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	Incredible Marketeer Ites An ISO 9001 2015 Company	Indirect evidence	London, United KingdomHQ checked Sep 21, 2026	201-500	147 contacts →
	Indirect evidence “It ain't over 'til it's over." This quote applies very aptly to the way Incredible Marketeer works and performs.” Source: RevenueBase Database · checked Sep 21, 2026
2	D2ms	Strong evidence	London, United KingdomHQ checked Sep 21, 2026	51-200	48 contacts →
	Strong evidence “At D2MS, we believe direct marketing can be done differently.” Source: RevenueBase Database · checked Sep 21, 2026
3	INC Direct	Strong evidence	London, United KingdomHQ checked Sep 21, 2026	51-200	36 contacts →
	Strong evidence “Inc Direct has evolved into one of the UKs most respected, innovative and forward thinking marketing communications companies.” Source: RevenueBase Database · checked Sep 21, 2026
4	WPNC	Partial evidence	London, United KingdomHQ checked Sep 21, 2026	51-200	35 contacts →
	Partial evidence “wpnc is a digital and direct agency.” Source: RevenueBase Database · checked Sep 21, 2026
5	Digiio	Indirect evidence	London, United KingdomHQ checked Sep 21, 2026	11-50	28 contacts →
	Indirect evidence “At digiio we pioneer innovative campaigns, approaches and intelligence that unlock interest and capture the imagination of our client’s customers.” Source: RevenueBase Database · checked Sep 21, 2026
6	Agent3 Group	Partial evidence	London, United KingdomHQ checked Sep 21, 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 21, 2026
7	The Leaflet Company	Indirect evidence	London, United KingdomHQ checked Sep 21, 2026	51-200	21 contacts →
	Indirect evidence “The Leaflet Company is the UK’s leading distributor of unaddressed mail and forms part of a wider group of companies, including The Insert Company, Face to Face, Print Force and…” Source: RevenueBase Database · checked Sep 21, 2026
8	7demand	Partial evidence	London, United KingdomHQ checked Sep 21, 2026	1-10	20 contacts →
	Partial evidence “7Demand is your global channel-focussed partner and customer marketing agency.” Source: RevenueBase Database · checked Sep 21, 2026
9	RED Interactive Limited	Partial evidence	London, United KingdomHQ checked Sep 21, 2026	11-50	18 contacts →
	Partial evidence “RedInteractive is a strategic marketing agency specialising in developing and driving channels for sales and customer acquisition for online companies.” Source: RevenueBase Database · checked Sep 21, 2026
10	BIG Wolf Marketing	Partial evidence	London, United KingdomHQ checked Sep 21, 2026	51-200	16 contacts →
	Partial evidence “Big Wolf Marketing - Leaders in B2B Telemarketing, Lead Generation & Appointment Setting With a vast combined experience, implementing established and cutting edge innovative…” Source: RevenueBase Database · checked Sep 21, 2026
11	Upbeat Agency	Indirect evidence	London, United KingdomHQ checked Sep 21, 2026	1-10	11 contacts →
	Indirect evidence “Hey there.” Source: RevenueBase Database · checked Sep 21, 2026
12	Active Content	Partial evidence	London, United KingdomHQ checked Sep 21, 2026	11-50	11 contacts →
	Partial evidence “At acontent.ai, we’re a team of experienced, endlessly curious marketing and technology professionals dedicated to helping some of the world’s most respected companies- spanning…” Source: RevenueBase Database · checked Sep 21, 2026
13	Media Engineered	Partial evidence	London, United KingdomHQ checked Sep 21, 2026	11-50	11 contacts →
	Partial evidence “Media Engineered helps DTC brands scale ad spend and slash CPA through direct response ad creatives and Meta ads.” Source: RevenueBase Database · checked Sep 21, 2026
14	Callent Tech LTD	Indirect evidence	London, United KingdomHQ checked Sep 21, 2026	51-200	11 contacts →
	Indirect evidence “Welcome to Callent Tech, The Future of B2B Demand Generation.” Source: RevenueBase Database · checked Sep 21, 2026
15	Lavery Rowe Advertising	Strong evidence	London, United KingdomHQ checked Sep 21, 2026	11-50	10 contacts →
	Strong evidence “Lavery Rowe Advertising has over 30 years experience in Direct Response and Performance Marketing.” Source: RevenueBase Database · checked Sep 21, 2026
16	Melusine Studio	Indirect evidence	London, United KingdomHQ checked Sep 21, 2026	1-10	9 contacts →
	Indirect evidence “With over 10 years of experience in the e-commerce space, we know a thing or two about delivering results.” Source: RevenueBase Database · checked Sep 21, 2026
17	LGG Marketing LTD	Strong evidence	London, United KingdomHQ checked Sep 21, 2026	11-50	8 contacts →
	Strong evidence “LGG Marketing are a direct marketing company based in North London specializing in leaflet distributions, bespoke distributions, printing and design, as well as street and event…” Source: RevenueBase Database · checked Sep 21, 2026
18	Blue Market Media	Strong evidence	London, United KingdomHQ checked Sep 21, 2026	11-50	7 contacts →
	Strong evidence “Through package inserts, door drops, and direct mail; we boost brands that want to add to their digital marketing.” Source: RevenueBase Database · checked Sep 21, 2026
19	Demand Studio	Partial evidence	London, United KingdomHQ checked Sep 21, 2026	51-200	7 contacts →
	Partial evidence “Demand Studio is a B2B marketing services company with a highly experienced team and 250+ operational resources worldwide.” Source: RevenueBase Database · checked Sep 21, 2026
20	Kontiki Media	Partial evidence	London, United KingdomHQ checked Sep 21, 2026	11-50	7 contacts →
	Partial evidence “Kontiki Media: Your Partner in Digital and Relationship Marketing Kontiki Media is a rapidly growing digital marketing company with a team of 45 professionals, headquartered in…” Source: RevenueBase Database · checked Sep 21, 2026
21	Growth Alliance	Indirect evidence	London, United KingdomHQ checked Sep 21, 2026	11-50	4 contacts →
	Indirect evidence “We partner with our clients to help them connect with prospects, customers and employees in ways that drive rapid growth in an ever-changing business environment.” Source: RevenueBase Database · checked Sep 21, 2026
22	OUTBX	Indirect evidence	London, United KingdomHQ checked Sep 21, 2026	1-10	3 contacts →
	Indirect evidence “We’re the unorthodox outreach agency that places you front and centre of your target audience.” Source: RevenueBase Database · checked Sep 21, 2026
23	Capital C Digital Marketing	Indirect evidence	London, United KingdomHQ checked Sep 21, 2026	1-10	3 contacts →
	Indirect evidence “Want data-driven campaigns that generate real pipeline?” Source: RevenueBase Database · checked Sep 21, 2026
24	Fixate	Strong evidence	London, United KingdomHQ checked Sep 21, 2026	1-10	3 contacts →
	Strong evidence “Fixate leverages direct marketing channels (email, SMS, and push) to transform your business trajectory.” Source: RevenueBase Database · checked Sep 21, 2026
25	KSO Media	Strong evidence	London, United KingdomHQ checked Sep 21, 2026	1-10	3 contacts →
	Strong evidence “KSO Media is a performance marketing firm with the goal of helping companies generate leads and sales by utilizing direct-response marketing channels.” Source: RevenueBase Database · checked Sep 21, 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: direct marketing firms. 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 direct marketing firms.
Partial evidence: Its own public description names part of direct marketing firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name direct marketing firms. 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 172 direct marketing firms based in London, United Kingdom

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Direct marketing firms based in London, United Kingdom at a glance

As of Sep 21, 2026

6.9%Verified-email coverage

17.6Average contacts per company

1-10Median size (employees)

100.0%Largest-city concentration · London

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

106

11-50

51-200

201-500

501-1,000

1,001-5,000

10001+

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 172 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 direct marketing firms, 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 “direct marketing firms”. 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 direct marketing firms), 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 direct marketing firms, 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, 210 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 21, 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.

Direct marketing firms by metro in the United Kingdom

Direct marketing firms in London172
Direct marketing firms in Manchester29
Direct marketing firms in Birmingham26

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 direct marketing firms, 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 direct marketing firms are there based in London, United Kingdom?

RevenueBase identified 172 direct marketing firms 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?

Incredible Marketeer Ites An ISO 9001 2015 Company, headquartered in London, tops this list with the largest team on record.

Which city has the most direct marketing firms?

London leads with 172 headquartered companies, followed by Manchester (29) and Birmingham (26).

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 210 verified decision-maker contacts tracked across these 172 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 21, 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.