Company lists · Data verified August 2026

Top 25 Digital advertising platforms based in the United Kingdom

Name: Digital advertising platforms based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 772 companies tracked

There are 772 digital advertising platforms headquartered in the United Kingdom (RevenueBase, August 2026). RevenueBase tracks 11,621 professional contacts across them, including 2,516 with verified work emails and 1,030 with mobile numbers. London is the largest hub.

This list covers digital advertising platforms headquartered in the United Kingdom, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Data current as of August 28, 2026.

772Companies

11,621Contacts tracked

2,516Verified emails

1,030Mobile numbers

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The 25 largest digital advertising platforms based in the United Kingdom

Ranked by team size

Top 25 of 772 digital advertising platforms based in the United Kingdom, ranked by team size, largest first. Data verified Aug 28, 2026. Click a count to unlock that company's people.
#	Company	HQ	Employees	Contacts	Verified emails
1	OGURY	London	501-1,000	591	100
2	VERVE	London	501-1,000	443	180
3	Loopme	Manchester	201-500	401	237
4	Jcdecaux UK	Brentford	501-1,000	163	15
5	Thomson Local	Farnborough	201-500	162	9
6	Expandi Group	London	201-500	155	46
7	Ozone The Audience Connection Platform	London	51-200	145	109
8	I-Media	London	51-200	143	39
9	Crimtan	London	51-200	128	94
10	Admixer	London	201-500	98	15
11	DCMN	London	51-200	94	64
12	Smarter Ecommerce Smec	London	51-200	92	55
13	REVX	London	51-200	88	44
14	Efficient Frontier	London	201-500	85	2
15	S4 Capital Group	n/a	5,001-10,000	74	27
16	Admaxim INC	London	51-200	74	27
17	Onetag	London	51-200	71	61
18	Nest Commerce	London	51-200	69	50
19	Airnow Media	London	201-500	68	1
20	Zitcha	London	51-200	65	54
21	LUNIO	Chorley	51-200	64	40
22	Sharethrough	London	51-200	62	38
23	Adylic	London	51-200	58	25
24	OCM Digital Media	London	51-200	54	38
25	DAX	London	201-500	51	10

Showing 25 of 772 digital advertising platforms based in the United Kingdom

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Digital advertising platforms based in the United Kingdom at a glance

As of Aug 28, 2026

1-10Median size (employees)

LondonLargest hub · 423 HQs

1,030Contacts with mobile numbers

5Emails re-verified in last 30 days

Companies by employee count

1-10

452

11-50

240

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

Digital advertising platforms by metro

Metro	Companies
Digital advertising platforms in London	423
Digital advertising platforms in Manchester	26
Digital advertising platforms in Birmingham	16
Digital advertising platforms in Leeds	11
Digital advertising platforms in Nottingham	10
Digital advertising platforms in Edinburgh	9
Digital advertising platforms in Bristol	8

How this list was built

Source: The RevenueBase company graph: 21.3 million companies and 398.9 million professional contacts resolved from primary sources.
Inclusion: Companies whose own business descriptions match “digital advertising platforms”, with match quality audited by blind human judging, and headquartered in the United Kingdom.
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: Contact records re-verify on a rolling cadence; 5 contacts on this list were re-verified in the last 30 days.
Refresh: Lists are refreshed periodically as the underlying company graph is re-verified. Last verified Aug 28, 2026.

Frequently asked

How many digital advertising platforms are there based in the United Kingdom?

There are 772 digital advertising platforms headquartered in the United Kingdom as of August 2026 (RevenueBase).

What is the largest company on this list?

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

Which city has the most digital advertising platforms?

London leads with 423 headquartered companies, followed by Manchester (26) and Birmingham (16).

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 2,516 verified decision-maker contacts tracked across these 772 companies.

How current is this list?

The list is refreshed periodically as the underlying company graph is re-verified. It was last verified on August 28, 2026.

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About this data

RevenueBase is a B2B contact data platform. Its company graph covers 21.3 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, the same data that powers RevenueBase's B2B data products and the free research portal.