Company lists · Data refreshed September 2026
Top 25 Traditional media agencies based in London, United Kingdom
RevenueBase identified 73 traditional media agencies headquartered in London, United Kingdom as of September 2026 and tracks 1,370 professional contacts across them, including 611 with verified work emails. Across the United Kingdom, London is the largest hub for this category.
This list covers traditional media 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 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 traditional media agencies based in London, United Kingdom
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 295 contacts → | ||||
Partial evidence “the7stars is the UK’s largest independent media agency, offering the best people, the best service and the best creative media campaigns.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 2 | 195 contacts → | ||||
Partial evidence “Medialab is the UK’s leading independent media agency, Campaign's 2025 & 2024 Independent Media Agency of the Year and Media Week's Independent Media Agency of the Year 2025…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 3 | 63 contacts → | ||||
Indirect evidence “Beast is a flexible, forward-thinking production partner to agencies & brands based in central London.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 4 | 51 contacts → | ||||
Partial evidence “Adgenda Media International (AMI) was established in 2005 as an independent, strategic results-driven media agency.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 5 | 50 contacts → | ||||
Partial evidence “From our office in London & Leeds, we seamlessly plan and buy media across all channels: digital, TV, cinema, OOH, radio, print, social and search.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 6 | 44 contacts → | ||||
Partial evidence “As an independent media agency we think differently.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 7 | 27 contacts → | ||||
Partial evidence “December19 is a media planning and buying agency.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 8 | 24 contacts → | ||||
Indirect evidence “Where people and creativity drive real results.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 9 | 23 contacts → | ||||
Partial evidence “At JWE Media, we take care of your marketing and advertising needs, from TV to Press, Out of Home to Digital, we manage the whole process ensuring we save you time and money.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 10 | 23 contacts → | ||||
Partial evidence “Media Futures Market (MFM) is a high-growth, independent media agency and marketplace.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 11 | 21 contacts → | ||||
Partial evidence “Guerillascope is a full-service media agency, with serious chops across AV, out-of-home, publishers, digital, and partnerships.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 12 | 18 contacts → | ||||
Partial evidence “White Spider Media agency's name has been fraudulently used by third parties, often communicating via messaging services on unofficial websites and apps and targeting job seekers.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 13 | 17 contacts → | ||||
Partial evidence “Media Campaign was started in 1975 and is was of the first Media Independents in the UK Launching and building brands through smart Media Planning and Buying for over forty years…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 14 | 15 contacts → | ||||
Partial evidence “We are Altair Media and we are here to make you famous to the people that matter.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 15 | 12 contacts → | ||||
Partial evidence “We are specialists in representing premium publishers to help grow their media footprint & revenues, whilst providing end to end agency engagement.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 16 | 10 contacts → | ||||
Partial evidence “COUSIN Media Group is a full-service media planning and buying agency focused on the entertainment industry.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 17 | 10 contacts → | ||||
Partial evidence “Excite OOH is a specialised outdoor advertising agency covering all aspects of media planning, buying, creative, reporting, strategy, etc.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 18 | 9 contacts → | ||||
Partial evidence “Water & Lime Media is a full service media buying agency.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 19 | 8 contacts → | ||||
Indirect evidence “We specialise in Display, Social, Native, Video, Search, Programmatic TV, Digital Radio & Digital Out of Home, alongside Creative services, seamlessly unifying cross-channel…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 20 | 8 contacts → | ||||
Partial evidence “Mercury Publicity Ltd is the UK’s leading independent international media representative.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 21 | 8 contacts → | ||||
Strong evidence “WE COVER ALL YOUR MEDIA NEEDS Village Communications is your definitive media authority, excelling in both digital and traditional arenas with passion and professionalism.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 22 | 7 contacts → | ||||
Partial evidence “We are a full service media agency and we offer the best of both worlds: On one hand we are an independent, IPA accredited agency, able to offer unbiased and transparent advice.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 23 | 7 contacts → | ||||
Partial evidence “A media planning and buying agency helping brands exceed their goals through proven strategies, outstanding service, and the passion to see our clients succeed.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 24 | 7 contacts → | ||||
Partial evidence “Capital City Media Ltd is a media planning and buying agency primarily focussed on the financial industry.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 25 | 6 contacts → | ||||
Partial evidence “Oliver Raine is a media planning and buying agency.” 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: traditional media 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 traditional media agencies.
- Partial evidence
- Its own public description names part of traditional media agencies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name traditional media 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 25 of 73 traditional media agencies based in London, United Kingdom
See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 611 reachable decision-makers.
Free signup · no credit card
Traditional media agencies based in London, United Kingdom at a glance
As of Sep 29, 2026Companies by employee count
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 73 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 traditional media 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 “traditional media 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 traditional media 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 traditional media 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, 611 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.
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 traditional media 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 traditional media agencies are there based in London, United Kingdom?
RevenueBase identified 73 traditional media 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?
The7stars, headquartered in London, tops this list with the largest team on record.
Which city in the United Kingdom has the most traditional media agencies?
London leads the United Kingdom with 73 headquartered companies, followed by Manchester (9) and Birmingham (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 611 verified decision-maker contacts tracked across these 73 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.
Ready to reach these companies? Verified emails and direct dials for all 73 traditional media agencies based in London, United Kingdom. Start with a free account, no credit card.
Download this list →Related lists
Traditional media agencies by geography
- Traditional media agencies based in Sydney, Australia
- Traditional media agencies based in Paris, France
- Traditional media agencies based in Madrid, Spain
- Traditional media agencies based in Los Angeles, United States
- Traditional media agencies based in New York, United States
- Traditional media agencies based in Australia
- Traditional media agencies based in Brazil
- Traditional media agencies based in Canada
- Traditional media agencies based in France
- Traditional media agencies based in Germany
- Traditional media agencies based in India
- Traditional media agencies based in Italy
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.
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Traditional media agencies based in Sydney, Australia
- Traditional media agencies based in Paris, France
- Traditional media agencies based in Madrid, Spain
- Traditional media agencies based in Los Angeles, United States
- Traditional media agencies based in New York, United States
- Traditional media agencies based in Australia