Company lists · Data refreshed September 2026
Top 25 Out stream video ad platforms based in the United Kingdom
RevenueBase identified 75 out stream video ad platforms headquartered in the United Kingdom as of September 2026 and tracks 678 professional contacts across them, including 264 with verified work emails. London is the largest hub.
This list covers out stream video ad 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. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 29, 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.
The 25 largest out stream video ad platforms based in the United Kingdom
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 192 contacts → | ||||
Partial evidence “Vidsy helps global brands achieve business goals with effective video ads, created efficiently and consistently for digital.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 2 | 49 contacts → | ||||
Strong evidence “Precise TV is an award-winning HIPAA and COPPA certified contextual video advertising platform offering advanced machine-learning optimization and contextual targeting helping you…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 3 | 43 contacts → | ||||
Partial evidence “Yospace has been at the forefront of the digital video revolution for 25 years.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 4 | 39 contacts → | ||||
Indirect evidence “Nexxen empowers advertisers, agencies, publishers and broadcasters around the world to utilize data and advanced TV in the ways that are most meaningful to them.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 5 | 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 29, 2026Thanks. The Data Team will review it. | |||||
| 6 | 14 contacts → | ||||
Strong 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 29, 2026Thanks. The Data Team will review it. | |||||
| 7 | 13 contacts → | ||||
Partial evidence “Pixels AI uses innovative tech to amplify the potential of video on the Open Web.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 8 | 12 contacts → | ||||
Strong evidence “Smartzer is a SaaS platform used by brands to make live streams and videos interactive and shoppable to drive sales and capture detailed analytics directly from their videos.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 9 | 11 contacts → | ||||
Strong evidence “Sprintty.com is revolutionizing the video streaming landscape by empowering users to build their own cutting-edge streaming services effortlessly and at lightning speed.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 10 | 9 contacts → | ||||
Indirect evidence “At Numodo, we understand the importance of staying ahead in the digital advertising landscape.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 11 | 9 contacts → | ||||
Strong evidence “As Smatch, We help brands reach brand new audiences on mobile games, streamers, blended networks and audio platforms.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 12 | 8 contacts → | ||||
Indirect 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 29, 2026Thanks. The Data Team will review it. | |||||
| 13 | 8 contacts → | ||||
Indirect evidence “Programmatic was built to make media smarter.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 14 | 7 contacts → | ||||
Partial evidence “Coull is an advertising technology company that adds value to any video, for advertisers and web publishers.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 15 | 6 contacts → | ||||
Indirect evidence “Inskin delivers attention: Its specialised formats enable advertising that is unmissable, unforgettable and consistently delivers maximum impact.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 16 | 6 contacts → | ||||
Partial evidence “United4digital is a global marketing company specializing in video and audio advertising solutions.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 17 | 6 contacts → | ||||
Indirect evidence “From the beginning, Open Horizons Media has been a programmatic advertising company dedicated to achieving digital advertising success for businesses of all sizes!” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 18 | 5 contacts → | ||||
Indirect evidence “Octave Audio is live!” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 19 | 5 contacts → | ||||
Strong evidence “Bedrock Platform helps brings forward your competitive advantage with a next generation media buying platform that unifies curated quality and intelligence with high impact Video…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 20 | 5 contacts → | ||||
Strong evidence “VUALTO design, develop and deploy streaming solutions to make your online video happen.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 21 | 5 contacts → | ||||
Partial evidence “SIGWICK MEDIA | A Global Programmatic Advertising Platform, buyers may use real-time bidding on direct premium inventory through SIGWICK MEDIA.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 22 | 5 contacts → | ||||
Partial evidence “Videolity helps businesses to monetise their videos by auto-tagging and making them one-click shoppable.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 23 | 3 contacts → | ||||
Strong evidence “FlixForge is a comprehensive, scalable, cost effective and secure Over-The-Top (OTT) video streaming platform.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 24 | 3 contacts → | ||||
Strong evidence “The Vidium Video Intelligence platform is powered by deterministic video execution signals to help brands deliver the best viewing experiences for their ads across OLV and CTV.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 25 | 2 contacts → | ||||
Strong evidence “AdSpruce has created the technology and platform to make video advertising work on all mobile devices.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
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: out stream video ad platforms. 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 out stream video ad platforms.
- Partial evidence
- Its own public description names part of out stream video ad platforms, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name out stream video ad platforms. 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 75 out stream video ad platforms based in the United Kingdom
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Out stream video ad platforms based in the United Kingdom at a glance
As of Sep 29, 2026Companies by employee count
Email recency for this list is measured worldwide rather than for United Kingdom, so it is reported there. Company counts and contact totals on this page are exact for United Kingdom, over 75 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 out stream video ad platforms, 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 the United Kingdom whose own description of what they do matches “out stream video ad platforms”. 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 out stream video ad platforms), 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 out stream video ad platforms, and records with no verified work email. Companies headquartered outside United Kingdom 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, 264 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 29, 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.
Out stream video ad platforms by metro
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 out stream video ad platforms, 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 out stream video ad platforms are there based in the United Kingdom?
RevenueBase identified 75 out stream video ad platforms headquartered in the 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?
VIDSY, headquartered in London, tops this list with the largest team on record.
Which city has the most out stream video ad platforms?
London leads with 49 headquartered companies, followed by Birmingham (3) and Manchester (2).
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 264 verified decision-maker contacts tracked across these 75 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 29, 2026.
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Out stream video ad platforms by geography
- Out stream video ad platforms based in Tel Aviv, Israel
- Out stream video ad platforms based in London, United Kingdom
- Out stream video ad platforms based in Los Angeles, United States
- Out stream video ad platforms based in New York, United States
- Out stream video ad platforms based in San Francisco, United States
- Out stream video ad platforms based in Canada
- Out stream video ad platforms based in France
- Out stream video ad platforms based in Germany
- Out stream video ad platforms based in India
- Out stream video ad platforms based in Israel
- Out stream video ad platforms based in the Netherlands
- Out stream video ad platforms based in Spain
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.
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- Out stream video ad platforms based in Tel Aviv, Israel
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- Out stream video ad platforms based in Canada