Company lists · Data refreshed September 2026

Top 24 In-app advertising agencies based in London, United Kingdom

Name: In-app advertising 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 28, 2026 128 companies tracked

RevenueBase identified 128 in-app advertising agencies headquartered in London, United Kingdom as of September 2026 and tracks 1,507 professional contacts across them, including 552 with verified work emails. Across the United Kingdom, London is the largest hub for this category.

This list covers in-app advertising 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 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

128Companies

1,507Contacts tracked

552Verified emails

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The 24 largest in-app advertising agencies based in London, United Kingdom

Ranked by team size

Top 24 of 128 in-app advertising agencies 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 in-app advertising 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	Loopme	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	201-500	401 contacts →
	Partial evidence “LoopMe is bringing brands into apps, powered by AI agents.” Source: RevenueBase Database · checked Sep 28, 2026
2	OCM Digital Media	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	54 contacts →
	Partial evidence “OCM is a leading adtech agency providing solutions to advertisers, advertising agencies and to web, mobile & video publishers.” Source: RevenueBase Database · checked Sep 28, 2026
3	ADWMG	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	43 contacts →
	Indirect evidence “adWMG, a division of WMG International, is a leading ad-tech company specializing in programmatic game promotion and monetization.” Source: RevenueBase Database · checked Sep 28, 2026
4	Yodel Mobile	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	41 contacts →
	Partial evidence “Yodel Mobile is a global, award-winning app growth consultancy with over 18 years of experience helping brands drive sustainable growth across the entire app lifecycle.” Source: RevenueBase Database · checked Sep 28, 2026
5	Audiomob	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	39 contacts →
	Indirect evidence “Audiomob is a completely new way to monetise mobile games.” Source: RevenueBase Database · checked Sep 28, 2026
6	Automated Creative	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	38 contacts →
	Indirect evidence “Our platform helps performance marketers scale social, display and retail media campaigns.” Source: RevenueBase Database · checked Sep 28, 2026
7	Otherwayaround	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	30 contacts →
	Partial evidence “Not following the same old rules for app marketing, where only the big-spender apps are favored.” Source: RevenueBase Database · checked Sep 28, 2026
8	Terrier Agency	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	28 contacts →
	Partial evidence “Based in London, Terrier has a team that has collectively over 50 years experience in digital advertising.” Source: RevenueBase Database · checked Sep 28, 2026
9	Adludio	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	24 contacts →
	Partial evidence “Adludio is an award-winning, AI-powered platform that delivers brand outcomes through interactive mobile advertising.” Source: RevenueBase Database · checked Sep 28, 2026
10	Mobisharks	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	23 contacts →
	Indirect evidence “Mobisharks is the innovative company that brings together brands, agencies, advertisers and mobile users.” Source: RevenueBase Database · checked Sep 28, 2026
11	Hoopla Digital LTD	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	18 contacts →
	Partial evidence “Hoopla are an independent start-up online advertising network, specialising in online video, display, mobile and branded advertising solutions.” Source: RevenueBase Database · checked Sep 28, 2026
12	KURVE	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	51-200	18 contacts →
	Partial evidence “From precision ASO to award-winning paid social campaigns, Kurve combines data-driven strategies and creative excellence to help ambitious founders scale their apps to category…” Source: RevenueBase Database · checked Sep 28, 2026
13	ADS And More	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	17 contacts →
	Indirect evidence “Ads and More Group is an international holding operating globally in programmatic marketing, built to deliver measurable growth through data, technology, and disciplined execution.” Source: RevenueBase Database · checked Sep 28, 2026
14	SYNKD	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	17 contacts →
	Indirect evidence “Synkd is a unique mobile marketing ecosystem offering an evolving suite of solutions from premium publisher ad serving, creative development, application creation, as well as…” Source: RevenueBase Database · checked Sep 28, 2026
15	Mobile Marketing	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	17 contacts →
	Partial evidence “Mobile Marketing is all about meeting your customers and users through their entire browsing cycle, from when they first hear about your app, to when they become loyal and…” Source: RevenueBase Database · checked Sep 28, 2026
16	Audience2media	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	16 contacts →
	Partial evidence “Audience2Media is an Advertising Technology based company with offices in the UK and Asia, delivering data driven campaigns across all media channels, applying an innovative…” Source: RevenueBase Database · checked Sep 28, 2026
17	Bidinfluence	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	14 contacts →
	Indirect evidence “Welcome to bidinfluence, your premier supply-side platform specializing in the dynamic monetization of mobile applications through top-notch programmatic video ads.” Source: RevenueBase Database · checked Sep 28, 2026
18	mediaverse.ai	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	14 contacts →
	Indirect evidence “The open internet has a signal problem.” Source: RevenueBase Database · checked Sep 28, 2026
19	Playgap	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	10 contacts →
	Indirect evidence “Playgap is an IAP promotion platform powered by predictive AI.” Source: RevenueBase Database · checked Sep 28, 2026
20	Imagine Mobile	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	9 contacts →
	Indirect evidence “We are a leading global premium ad-network with out of this world creative solutions.” Source: RevenueBase Database · checked Sep 28, 2026
21	Smatch	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	1-10	9 contacts →
	Indirect evidence “As Smatch, We help brands reach brand new audiences on mobile games, streamers, blended networks and audio platforms.” Source: RevenueBase Database · checked Sep 28, 2026
22	Node London	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	1-10	8 contacts →
	Indirect evidence “we are node.” Source: RevenueBase Database · checked Sep 28, 2026
23	Deviceful	Indirect evidence	London, United KingdomHQ checked Sep 28, 2026	1-10	8 contacts →
	Indirect evidence “Deviceful are digital ad creative specialists.” Source: RevenueBase Database · checked Sep 28, 2026
24	Adbreak	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	11-50	8 contacts →
	Partial evidence “The vision of this organization is to continuously innovate and improve the field of digital advertising by focusing on the research and development of tools used to optimize the…” 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: in-app advertising 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 in-app advertising agencies.
Partial evidence: Its own public description names part of in-app advertising agencies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name in-app advertising 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 24 of 128 in-app advertising agencies based in London, United Kingdom

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In-app advertising agencies based in London, United Kingdom at a glance

As of Sep 28, 2026

36.6%Verified-email coverage

11.8Average contacts per company

11-50Median size (employees)

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

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 128 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 in-app advertising 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 “in-app advertising 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 in-app advertising 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 in-app advertising 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, 552 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 in-app advertising 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 in-app advertising agencies are there based in London, United Kingdom?

RevenueBase identified 128 in-app advertising 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?

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

Which city in the United Kingdom has the most in-app advertising agencies?

London leads the United Kingdom with 128 headquartered companies, followed by Edinburgh (5) and Birmingham (4).

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 552 verified decision-maker contacts tracked across these 128 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.