Company lists · Data refreshed September 2026

Top 25 Marketing data integration software companies based in London, United Kingdom

Name: Marketing data integration software companies based in London, United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 121 companies tracked

RevenueBase identified 121 marketing data integration software companies headquartered in London, United Kingdom as of September 2026 and tracks 2,719 professional contacts across them, including 626 with verified work emails. Across the United Kingdom, London is the largest hub for this category.

This list covers marketing data integration software companies 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 28, 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 28, 2026 86% judged on-target in blind review

121Companies

2,719Contacts tracked

626Verified emails

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The 25 largest marketing data integration software companies based in London, United Kingdom

Ranked by team size

Top 25 of 121 marketing data integration software companies based in London, United Kingdom, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to marketing data integration software companies: 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	MAPP	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	201-500	373 contacts →
	Partial evidence “Mapp helps marketers build personalized customer experiences through our SaaS platform, Mapp Marketing Cloud.” Source: RevenueBase Database · checked Sep 28, 2026
2	OUTRA	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	n/a	189 contacts →
	Partial evidence “Outra provides the audience data that household names like Sky, Shell, Zoopla and AXA rely on to power their campaigns.” Source: RevenueBase Database · checked Sep 28, 2026
3	Expandi Group	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	201-500	155 contacts →
	Indirect evidence “Expandi Group is a global leader in AdTech, MarTech and Managed Services.” Source: RevenueBase Database · checked Sep 28, 2026
4	Actito Previously Smartfocus	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	99 contacts →
	Indirect evidence “Marketers spend billions on attracting customers and yet more than 70% of first time interactions with a brand are also the last.” Source: RevenueBase Database · checked Sep 28, 2026
5	Acteol	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	85 contacts →
	Partial evidence “We're an award-winning CRM agency who specialise in knitting together complex and disparate data to create a powerful single customer view that can deliver significant returns to…” Source: RevenueBase Database · checked Sep 28, 2026
6	PLINC	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	55 contacts →
	Partial evidence “Plinc helps brands turn first-party data into competitive advantage.” Source: RevenueBase Database · checked Sep 28, 2026
7	Baresquare	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	37 contacts →
	Indirect evidence “Never let a dead-end button sink conversion rates, lose visitors to slow page loads, or miss metrics that matter.” Source: RevenueBase Database · checked Sep 28, 2026
8	Cognifide	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	201-500	31 contacts →
	Partial evidence “Cognifide is a WPP marketing technology consultancy that works with some of the world’s leading businesses to deliver exceptional customer experiences.” Source: RevenueBase Database · checked Sep 28, 2026
9	IMG Intermedia Global	Strong evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	29 contacts →
	Strong evidence “We are an award-winning marketing agency helping ambitious businesses unlock growth by connecting data, technology, processes and campaigns into a single, effective marketing…” Source: RevenueBase Database · checked Sep 28, 2026
10	Orphex	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	23 contacts →
	Partial evidence “Orphex is the Digital Marketing Orchestrator.” Source: RevenueBase Database · checked Sep 28, 2026
11	Alveo Technology	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	19 contacts →
	Partial evidence “Where Data Flows.” Source: RevenueBase Database · checked Sep 28, 2026
12	Zzgtech	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	18 contacts →
	Partial evidence “ZZGTech builds secure and scalable infrastructure for modern marketing and customer communication.” Source: RevenueBase Database · checked Sep 28, 2026
13	Audiencerate	Strong evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	17 contacts →
	Strong evidence “Audiencerate is the Marketing Data Platform that helps agencies, brands, and public organizations turn fragmented data into precise audiences and activate them across every…” Source: RevenueBase Database · checked Sep 28, 2026
14	Sweet Analytics	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	14 contacts →
	Partial evidence “Sweet Analytics, at the centre of all your data.” Source: RevenueBase Database · checked Sep 28, 2026
15	Audiences	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	12 contacts →
	Partial evidence “AUDIENCES is the pioneer of in-cloud data activation.” Source: RevenueBase Database · checked Sep 28, 2026
16	Dexata	Strong evidence	London, United KingdomHQ checked Sep 28, 2026	201-500	12 contacts →
	Strong evidence “Dexata is your value-focused MarTech and customer data partner, specialising in unlocking tangible, measurable growth from your marketing technology investments.” Source: RevenueBase Database · checked Sep 28, 2026
17	FIH Consultancy	Strong evidence	London, United KingdomHQ checked Sep 28, 2026	1-10	12 contacts →
	Strong evidence “FIH Consultancy empowers you to attract, engage, and convert your target audience through data-driven marketing solutions.” Source: RevenueBase Database · checked Sep 28, 2026
18	Active Content	Partial evidence	London, United KingdomHQ checked Sep 28, 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 28, 2026
19	TAU Marketing Solutions	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	10 contacts →
	Partial evidence “TAU is a independent marketing AI partner helping marketing teams use AI to deliver real commercial impact, not more complexity.” Source: RevenueBase Database · checked Sep 28, 2026
20	Bright Analytics	Strong evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	10 contacts →
	Strong evidence “Bright Analytics is a modern data analysis and data-visualisation platform focused on Marketing and Business Performance, that can be deployed as an end-to-end solution or on a…” Source: RevenueBase Database · checked Sep 28, 2026
21	IIRIS	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	201-500	9 contacts →
	Partial evidence “IIRIS is Informa's centralised data and analytics engine for all our B2B Markets customer data to capture opportunities from using data to enhance our existing products and…” Source: RevenueBase Database · checked Sep 28, 2026
22	Marketing Town	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	9 contacts →
	Indirect evidence “We are in the midst of a shift in business models, powered by the modern SaaS economy, developments in technology and digitalisation of consumer behaviour.” Source: RevenueBase Database · checked Sep 28, 2026
23	Unifida	Strong evidence	London, United KingdomHQ checked Sep 28, 2026	1-10	8 contacts →
	Strong evidence “Welcome to UniFida, where we specialise in transforming your marketing strategies with cutting-edge data science and pioneering marketing technology.” Source: RevenueBase Database · checked Sep 28, 2026
24	Lumendash	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	8 contacts →
	Partial evidence “Unified marketing campaigns and dashboards See your entire growth story in one place-no more logging into 6 different platforms - create and visualise all your platforms in one.” Source: RevenueBase Database · checked Sep 28, 2026
25	It's Personal Retention For DTC Brands	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	1-10	7 contacts →
	Partial evidence “Does your Email Marketing bring you 30-60% of revenue?” Source: RevenueBase Database · checked Sep 28, 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: marketing data integration software companies. 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 marketing data integration software companies.
Partial evidence: Its own public description names part of marketing data integration software companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name marketing data integration software companies. 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 121 marketing data integration software companies based in London, United Kingdom

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Marketing data integration software companies based in London, United Kingdom at a glance

As of Sep 28, 2026

23.0%Verified-email coverage

22.5Average contacts per company

11-50Median size (employees)

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

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 121 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 marketing data integration software companies, 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 “marketing data integration software companies”. 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 marketing data integration software companies), 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 marketing data integration software companies, 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, 626 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 28, 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.

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 marketing data integration software companies, 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 marketing data integration software companies are there based in London, United Kingdom?

RevenueBase identified 121 marketing data integration software companies 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?

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

Which city in the United Kingdom has the most marketing data integration software companies?

London leads the United Kingdom with 121 headquartered companies, followed by Manchester (9) and Leeds (5).

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 626 verified decision-maker contacts tracked across these 121 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 28, 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.