Company lists · Data refreshed September 2026

Top 25 Personalization marketing agencies based in London, United Kingdom

Name: Personalization 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 5, 2026 784 companies tracked

RevenueBase identified 784 personalization marketing agencies headquartered in London, United Kingdom as of September 2026 and tracks 15,973 professional contacts across them, including 2,180 with verified work emails. London is the largest hub.

This list covers personalization 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, how directly it supports the match, and when it was last checked. Data refreshed September 5, 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 5, 2026 86% judged on-target in blind review

784Companies

15,973Contacts tracked

2,180Verified emails

Explore all 784 companies → Free signup · no credit card · 500 free credits

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

Ranked by team size

Top 25 of 784 personalization marketing agencies based in London, United Kingdom, ranked by team size, largest first. Data refreshed Sep 5, 2026. Evidence rates how directly each company's own description names personalization 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	MONKSPartial evidence	London, United KingdomHQ checked Sep 5, 2026	5,001-10,000	6,237
	“Monks combines an extraordinary range of global marketing and technology services to accelerate business possibilities and redefine how brands and businesses interact with the…” Source: company website · checked Sep 5, 2026
2	MVFIndirect evidence	London, United KingdomHQ checked Sep 5, 2026	201-500	401
	“MVF powers growth for our clients by connecting them to potential customers.” Source: company website · checked Sep 5, 2026
3	MAPPPartial evidence	London, United KingdomHQ checked Sep 5, 2026	201-500	373
	“Mapp helps marketers build personalized customer experiences through our SaaS platform, Mapp Marketing Cloud.” Source: company website · checked Sep 5, 2026
4	EntourageIndirect evidence	London, United KingdomHQ checked Sep 5, 2026	51-200	370
	“In a world where everyone’s shouting the same thing, whisper something truly distinctive in all the right ears.” Source: company website · checked Sep 5, 2026
5	Kinesso Uk&iPartial evidence	London, United KingdomHQ checked Sep 5, 2026	501-1,000	194
	“KINESSO UK is the award-winning, tech-driven performance marketing agency delivering actionable growth for direct clients and agency partners.” Source: company website · checked Sep 5, 2026
6	Expandi GroupIndirect evidence	London, United KingdomHQ checked Sep 5, 2026	201-500	155
	“Expandi Group is a global leader in AdTech, MarTech and Managed Services.” Source: company website · checked Sep 5, 2026
7	Invibes AdvertisingIndirect evidence	London, United KingdomHQ checked Sep 5, 2026	201-500	146
	“At Invibes, our mission is to drive positive brand impact and business outcomes by prioritizing the uniqueness of every ad opportunity through valuable advertising solutions.” Source: company website · checked Sep 5, 2026
8	Havas Media UKIndirect evidence	London, United KingdomHQ checked Sep 5, 2026	201-500	133
	“At Havas Media we believe brands mean more by bringing them closer to people.” Source: company website · checked Sep 5, 2026
9	Actito Previously SmartfocusIndirect evidence	London, United KingdomHQ checked Sep 5, 2026	51-200	99
	“Marketers spend billions on attracting customers and yet more than 70% of first time interactions with a brand are also the last.” Source: company website · checked Sep 5, 2026
10	The Media PeopleIndirect evidence	London, United KingdomHQ checked Sep 5, 2026	11-50	83
	“Powered by our people, our campaigns put your audience first.” Source: company website · checked Sep 5, 2026
11	GA AgencyPartial evidence	London, United KingdomHQ checked Sep 5, 2026	51-200	70
	“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 5, 2026
12	SilverbulletIndirect evidence	London, United KingdomHQ checked Sep 5, 2026	51-200	57
	“Silverbullet is a leading Data-Driven Customer Experience (CX) Company that empowers the world's leading brands to better understand the data they collect, store, and activate to…” Source: company website · checked Sep 5, 2026
13	ROASTIndirect evidence	London, United KingdomHQ checked Sep 5, 2026	51-200	57
	“We are ROAST.” Source: company website · checked Sep 5, 2026
14	PLINCIndirect evidence	London, United KingdomHQ checked Sep 5, 2026	51-200	55
	“Plinc helps brands turn first-party data into competitive advantage.” Source: company website · checked Sep 5, 2026
15	Engage HUBIndirect evidence	London, United KingdomHQ checked Sep 5, 2026	51-200	49
	“Every customer is unique.” Source: company website · checked Sep 5, 2026
16	D2msPartial evidence	London, United KingdomHQ checked Sep 5, 2026	51-200	48
	“At D2MS, we believe direct marketing can be done differently.” Source: company website · checked Sep 5, 2026
17	gotu.ioPartial evidence	London, United KingdomHQ checked Sep 5, 2026	11-50	44
	“GotU is a marketing technology company developing hyperlocal advertising and marketing solutions for retailers, SMB marketing partners and local businesses everywhere.” Source: company website · checked Sep 5, 2026
18	Acorn-IIndirect evidence	London, United KingdomHQ checked Sep 5, 2026	51-200	38
	“Acorn Intelligence is part of The Brandtech Group.” Source: company website · checked Sep 5, 2026
19	Charlie OscarIndirect evidence	London, United KingdomHQ checked Sep 5, 2026	11-50	38
	“We’re strategists, analysts and creatives obsessed with building category leading brands.” Source: company website · checked Sep 5, 2026
20	VutureIndirect evidence	London, United KingdomHQ checked Sep 5, 2026	1,001-5,000	37
	“Where relationships take root.” Source: company website · checked Sep 5, 2026
21	INC DirectPartial evidence	London, United KingdomHQ checked Sep 5, 2026	51-200	36
	“Inc Direct has evolved into one of the UKs most respected, innovative and forward thinking marketing communications companies.” Source: company website · checked Sep 5, 2026
22	Haarty HanksPartial evidence	London, United KingdomHQ checked Sep 5, 2026	11-50	35
	“Haarty Hanks is a digital marketing agency comprised of tech nerds, creative designers and innovative strategists that plan and execute exceptional brand communications and web…” Source: company website · checked Sep 5, 2026
23	Acquisition INCPartial evidence	London, United KingdomHQ checked Sep 5, 2026	11-50	34
	“Customer Acquisition seems to be the end goal of so much global marketing spend, yet the complexity of all the moving parts is often overlooked.” Source: company website · checked Sep 5, 2026
24	StoneshotPartial evidence	London, United KingdomHQ checked Sep 5, 2026	51-200	34
	“StoneShot is a digital marketing technology and services provider specializing in financial services.” Source: company website · checked Sep 5, 2026
25	Bluedot AgencyPartial evidence	London, United KingdomHQ checked Sep 5, 2026	11-50	34
	“A disruptive, full-service, award-winning digital marketing & advertising agency for contemporary businesses, specialising in performance marketing, content marketing…” Source: company website · checked Sep 5, 2026

Showing 25 of 784 personalization marketing agencies based in London, United Kingdom

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

As of Sep 5, 2026

1-10Median size (employees)

LondonLargest hub · 784 HQs

Contacts with mobile numbers

Sep 5, 2026Data refreshed

Companies by employee count

1-10

513

11-50

211

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 this city, so it is reported there. Company counts and contact totals on this page are exact for London, over 784 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 personalization 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 London, United Kingdom whose own description of what they do matches “personalization 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 personalization 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 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, 2,180 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 5, 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.

Personalization marketing agencies by metro in the United Kingdom

Personalization marketing agencies in London784
Personalization marketing agencies in Manchester92
Personalization marketing agencies in Leeds48
Personalization marketing agencies in Birmingham45
Personalization marketing agencies in Glasgow31
Personalization marketing agencies in Liverpool25

Frequently asked

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

RevenueBase identified 784 personalization 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?

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

Which city has the most personalization marketing agencies?

London leads with 784 headquartered companies, followed by Manchester (92) and Leeds (48).

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 2,180 verified decision-maker contacts tracked across these 784 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 5, 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.