Company lists · Data refreshed September 2026
Top 25 B2B media agencies based in London, United Kingdom
RevenueBase identified 833 company matches for B2B media agencies associated with London, United Kingdom as of September 2026 and tracks 16,603 professional contacts across them, including 4,306 with verified work emails. Across the United Kingdom, London is the largest hub for this category.
This list covers company matches for B2B media agencies associated with London, United Kingdom, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 23, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 B2B media agencies based in London, United Kingdom
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 2,182 contacts → | ||||
Exact match “Carat is the world’s first media agency and is privileged to work with some of today’s most storied and innovative brands.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase | |||||
| 2 | 527 contacts → | ||||
Exact match “MG OMD, part of Omnicom Media, brings innovation, insight and creativity to the world of media.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase | |||||
| 3 | 370 contacts → | ||||
Exact match “In a world where everyone’s shouting the same thing, whisper something truly distinctive in all the right ears.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase | |||||
| 4 | 295 contacts → | ||||
Exact match “the7stars is the UK’s largest independent media agency, offering the best people, the best service and the best creative media campaigns.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase | |||||
| 5 | 282 contacts → | ||||
Exact match “At NewBase we provide expert and independent marketing and advertising services across all media channels globally.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase | |||||
| 6 | 272 contacts → | ||||
Exact match “The Spafax Group is one of the world’s leading providers of media sales, entertainment curation and content marketing.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase | |||||
| 7 | 247 contacts → | ||||
Exact match “eg+ is now part of OCX.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase | |||||
| 8 | 195 contacts → | ||||
Exact match “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…” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase | |||||
| 9 | 186 contacts → | ||||
Exact match “We work exclusively with B2B publishers and lead gen providers.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase | |||||
| 10 | 178 contacts → | ||||
Exact match “All Response Media is the leading performance media planning and buying agency.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase | |||||
| 11 | 155 contacts → | ||||
Exact match “Expandi Group is a global leader in AdTech, MarTech and Managed Services.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase | |||||
| 12 | 139 contacts → | ||||
Exact match “Publicis Pro is the specialist B2B marketing agency within Publicis Groupe, the world's number one marketing holding group.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase | |||||
| 13 | 136 contacts → | ||||
Exact match “The Drum covers modern marketing, agency business, creativity & the future of media.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase | |||||
| 14 | 132 contacts → | ||||
Exact match “We are an award-winning media planning and buying agency, helping brands cut through the noise with strategic clarity, inventive solutions, and commercial integrity.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase | |||||
| 15 | 128 contacts → | ||||
Exact match “Redactive is a London-based content and publishing agency that focuses on the core professional body membership sector and has unrivalled experience in this field.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase | |||||
| 16 | 126 contacts → | ||||
Exact match “Zenith is the ROI Agency.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase | |||||
| 17 | 126 contacts → | ||||
Exact match “NRi Digital creates design-led digital content for B2B and commercial markets.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase | |||||
| 18 | 115 contacts → | ||||
Exact match “Tarsus Group delivers B2B events across the globe along with digital media & industry-focussed publications.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase | |||||
| 19 | 111 contacts → | ||||
Exact match “We’re The Kite Factory, the independent media agency built on Values and Velocity.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase | |||||
| 20 | 107 contacts → | ||||
Exact match “From pigeons to platforms, from news agency to integrated communications services, our story is one of constant reinvention.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase | |||||
| 21 | 103 contacts → | ||||
Exact match “EssenceMediacom is GroupM’s newest and largest agency, committed to delivering breakthroughs for brands in the New Communications Economy.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase | |||||
| 22 | 96 contacts → | ||||
Exact match “THE NEXT-GENERATION MEDIA COMPANY Production.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase | |||||
| 23 | 95 contacts → | ||||
Exact match “Fox Agency is an integrated agency for global B2B tech brands on a mission: To grow, expand, transform, accelerate, go-to-market, get investment.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase | |||||
| 24 | 93 contacts → | ||||
Exact match “Sunday is an independent content marketing agency based in London.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase | |||||
| 25 | 93 contacts → | ||||
Exact match “We’re Ledger Bennett.” Recorded in the RevenueBase company graph · Sep 23, 2026 · View company records in RevenueBase | |||||
RevenueBase SmartSearch
Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.
This list uses Exact for “B2B media agencies”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.
Showing 25 of 833 B2B media agencies based in London, United Kingdom
See the full list, filter by size, metro and specialty, and access 4,306 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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B2B media agencies based in London, United Kingdom at a glance
As of Sep 23, 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 833 companies.
How this list was built
The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
- What qualifies
- Company records associated with London, United Kingdom whose business descriptions match “B2B media agencies” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
- RevenueBase SmartSearch
- Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
- Public preview
- The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
- Match quality
- RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
- 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 displayed company carries at least one verified work email. RevenueBase tracks 4,306 professional contacts with verified work emails across the full matched dataset. 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 23, 2026. Lists refresh periodically as the graph is re-checked.
- Record context
- Company records and descriptions can change. Check the company's website for its current services and locations.
B2B media agencies by metro in the United Kingdom
Frequently asked
What is RevenueBase SmartSearch?
RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “B2B media agencies”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many B2B media agencies are there based in London, United Kingdom?
RevenueBase identified 833 company matches for B2B media agencies associated with London, United Kingdom as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.
What is the largest company on this list?
CARAT tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city in the United Kingdom has the most B2B media agencies?
London leads the United Kingdom with 833 company records, followed by Manchester (75) and Birmingham (54).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 4,306 professional contacts with verified work emails tracked across these 833 companies; direct dials are available where recorded.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 23, 2026.
Ready to reach these companies? Verified emails and direct dials for all 833 B2B media agencies based in London, United Kingdom. Start with a free account, no credit card.
Download this list →Related lists
B2B media agencies by geography
- B2B media agencies based in the United States
- B2B media agencies based in the United Kingdom
- B2B media agencies based in Brazil
- B2B media agencies based in Germany
- B2B media agencies based in Canada
- B2B media agencies based in Australia
- B2B media agencies based in France
- B2B media agencies based in Spain
- B2B media agencies based in the Netherlands
- B2B media agencies based in Mexico
- B2B media agencies based in South Africa
- B2B 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 SmartSearch, 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
Company intelligence · public preview
Top 25 B2B media agencies based in London, United Kingdom
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 833 matching company records for B2B media agencies based in London, United Kingdom, with 16,603 tracked contacts and 4,306 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 23, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 B2B media agencies based in London, United Kingdom
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 |  CARATcarat.comHQ: London, United KingdomReported employees: 5,001-10,000 | London, United Kingdom | 5,001-10,000 | Exact match | 2,182 contacts → |
“Carat is the world’s first media agency and is privileged to work with some of today’s most storied and innovative brands.” Recorded description excerpt · September 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  MG OMDmgomd.comHQ: London, United KingdomReported employees: 201-500 | London, United Kingdom | 201-500 | Exact match | 527 contacts → |
“MG OMD, part of Omnicom Media, brings innovation, insight and creativity to the world of media.” Recorded description excerpt · September 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  Entourageentouragebd.comHQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 370 contacts → |
“In a world where everyone’s shouting the same thing, whisper something truly distinctive in all the right ears.” Recorded description excerpt · September 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  The7starsthe7stars.co.ukHQ: London, United KingdomReported employees: 201-500 | London, United Kingdom | 201-500 | Exact match | 295 contacts → |
“the7stars is the UK’s largest independent media agency, offering the best people, the best service and the best creative media campaigns.” Recorded description excerpt · September 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Newbasethenewbase.comHQ: London, United KingdomReported employees: 501-1,000 | London, United Kingdom | 501-1,000 | Exact match | 282 contacts → |
“At NewBase we provide expert and independent marketing and advertising services across all media channels globally.” Recorded description excerpt · September 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  Spafaxspafax.comHQ: London, United KingdomReported employees: 201-500 | London, United Kingdom | 201-500 | Exact match | 272 contacts → |
“The Spafax Group is one of the world’s leading providers of media sales, entertainment curation and content marketing.” Recorded description excerpt · September 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  EG Worldwideomc.comHQ: London, United KingdomReported employees: 1,001-5,000 | London, United Kingdom | 1,001-5,000 | Exact match | 247 contacts → |
“eg+ is now part of OCX.” Recorded description excerpt · September 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  Medialab Groupmedialabgroup.co.ukHQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 195 contacts → |
“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…” Recorded description excerpt · September 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Account Mediaaccountmedia.comHQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 186 contacts → |
“We work exclusively with B2B publishers and lead gen providers.” Recorded description excerpt · September 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  ALL Response Mediaallresponsemedia.comHQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 178 contacts → |
“All Response Media is the leading performance media planning and buying agency.” Recorded description excerpt · September 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  Expandi Groupexpandigroup.comHQ: London, United KingdomReported employees: 201-500 | London, United Kingdom | 201-500 | Exact match | 155 contacts → |
“Expandi Group is a global leader in AdTech, MarTech and Managed Services.” Recorded description excerpt · September 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Publicis PROpublicispro.comHQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 139 contacts → |
“Publicis Pro is the specialist B2B marketing agency within Publicis Groupe, the world's number one marketing holding group.” Recorded description excerpt · September 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  The Drumthedrum.comHQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 136 contacts → |
“The Drum covers modern marketing, agency business, creativity & the future of media.” Recorded description excerpt · September 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Goodstuffgoodstuff.co.ukHQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 132 contacts → |
“We are an award-winning media planning and buying agency, helping brands cut through the noise with strategic clarity, inventive solutions, and commercial integrity.” Recorded description excerpt · September 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  Redactive Media Groupredactive.co.ukHQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 128 contacts → |
“Redactive is a London-based content and publishing agency that focuses on the core professional body membership sector and has unrivalled experience in this field.” Recorded description excerpt · September 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Zenithzenithmedia.comHQ: London, United KingdomReported employees: 5,001-10,000 | London, United Kingdom | 5,001-10,000 | Exact match | 126 contacts → |
“Zenith is the ROI Agency.” Recorded description excerpt · September 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  NRInridigital.comHQ: London, United KingdomReported employees: 201-500 | London, United Kingdom | 201-500 | Exact match | 126 contacts → |
“NRi Digital creates design-led digital content for B2B and commercial markets.” Recorded description excerpt · September 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Tarsus Grouptarsus.comHQ: London, United KingdomReported employees: 501-1,000 | London, United Kingdom | 501-1,000 | Exact match | 115 contacts → |
“Tarsus Group delivers B2B events across the globe along with digital media & industry-focussed publications.” Recorded description excerpt · September 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  The Kite Factorythekitefactorymedia.comHQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 111 contacts → |
“We’re The Kite Factory, the independent media agency built on Values and Velocity.” Recorded description excerpt · September 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  Havas CX Helialon.havas.comHQ: London, United KingdomReported employees: 201-500 | London, United Kingdom | 201-500 | Exact match | 107 contacts → |
“From pigeons to platforms, from news agency to integrated communications services, our story is one of constant reinvention.” Recorded description excerpt · September 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  Essencemediacomxessencemediacom.comHQ: London, United KingdomReported employees: 501-1,000 | London, United Kingdom | 501-1,000 | Exact match | 103 contacts → |
“EssenceMediacom is GroupM’s newest and largest agency, committed to delivering breakthroughs for brands in the New Communications Economy.” Recorded description excerpt · September 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  Platform Mediaplatformmedia.ukHQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 96 contacts → |
“THE NEXT-GENERATION MEDIA COMPANY Production.” Recorded description excerpt · September 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  FOX Agencyfox.agencyHQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 95 contacts → |
“Fox Agency is an integrated agency for global B2B tech brands on a mission: To grow, expand, transform, accelerate, go-to-market, get investment.” Recorded description excerpt · September 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  Sundaywearesunday.comHQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 93 contacts → |
“Sunday is an independent content marketing agency based in London.” Recorded description excerpt · September 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  Ledger Bennettledgerbennett.comHQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 93 contacts → |
“We’re Ledger Bennett.” Recorded description excerpt · September 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 833 company matches
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B2B media agencies: dataset insights
September 23, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
831 records in the displayed employee bands.
2 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
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 833 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 23, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
B2B media agencies by metro in the United Kingdom
Questions about this company list
What does Exact match mean for B2B media agencies?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many B2B media agencies did RevenueBase find based in London, United Kingdom?
The saved snapshot records 833 matching company records, 16,603 tracked contacts and 4,306 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 23, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
B2B media agencies by geography
- B2B media agencies based in the United States
- B2B media agencies based in the United Kingdom
- B2B media agencies based in Brazil
- B2B media agencies based in Germany
- B2B media agencies based in Canada
- B2B media agencies based in Australia
- B2B media agencies based in France
- B2B media agencies based in Spain
- B2B media agencies based in the Netherlands
- B2B media agencies based in Mexico
- B2B media agencies based in South Africa
- B2B media agencies based in Italy
Cite this list
RevenueBase Data Team. Top 25 B2B media agencies based in London, United Kingdom. Snapshot: September 23, 2026. https://revenuebase.ai/companies/b2b-media-agencies/united-kingdom/london.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
Company intelligence · public preview
Top 25 B2B media agencies based in London, United Kingdom
RevenueBase records 833 matching company records for B2B media agencies based in London, United Kingdom, with 16,603 tracked contacts and 4,306 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 23, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 B2B media agencies based in London, United Kingdom
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | CARATcarat.com HQ: London, United KingdomReported employees: 5,001-10,000 | London, United Kingdom | 5,001-10,000 | Exact match | 2,182 contacts → |
“Carat is the world’s first media agency and is privileged to work with some of today’s most storied and innovative brands.” Recorded description excerpt · September 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | MG OMDmgomd.com HQ: London, United KingdomReported employees: 201-500 | London, United Kingdom | 201-500 | Exact match | 527 contacts → |
“MG OMD, part of Omnicom Media, brings innovation, insight and creativity to the world of media.” Recorded description excerpt · September 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Entourageentouragebd.com HQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 370 contacts → |
“In a world where everyone’s shouting the same thing, whisper something truly distinctive in all the right ears.” Recorded description excerpt · September 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | The7starsthe7stars.co.uk HQ: London, United KingdomReported employees: 201-500 | London, United Kingdom | 201-500 | Exact match | 295 contacts → |
“the7stars is the UK’s largest independent media agency, offering the best people, the best service and the best creative media campaigns.” Recorded description excerpt · September 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Newbasethenewbase.com HQ: London, United KingdomReported employees: 501-1,000 | London, United Kingdom | 501-1,000 | Exact match | 282 contacts → |
“At NewBase we provide expert and independent marketing and advertising services across all media channels globally.” Recorded description excerpt · September 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Spafaxspafax.com HQ: London, United KingdomReported employees: 201-500 | London, United Kingdom | 201-500 | Exact match | 272 contacts → |
“The Spafax Group is one of the world’s leading providers of media sales, entertainment curation and content marketing.” Recorded description excerpt · September 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | EG Worldwideomc.com HQ: London, United KingdomReported employees: 1,001-5,000 | London, United Kingdom | 1,001-5,000 | Exact match | 247 contacts → |
“eg+ is now part of OCX.” Recorded description excerpt · September 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Medialab Groupmedialabgroup.co.uk HQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 195 contacts → |
“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…” Recorded description excerpt · September 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Account Mediaaccountmedia.com HQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 186 contacts → |
“We work exclusively with B2B publishers and lead gen providers.” Recorded description excerpt · September 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | ALL Response Mediaallresponsemedia.com HQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 178 contacts → |
“All Response Media is the leading performance media planning and buying agency.” Recorded description excerpt · September 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Expandi Groupexpandigroup.com HQ: London, United KingdomReported employees: 201-500 | London, United Kingdom | 201-500 | Exact match | 155 contacts → |
“Expandi Group is a global leader in AdTech, MarTech and Managed Services.” Recorded description excerpt · September 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Publicis PROpublicispro.com HQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 139 contacts → |
“Publicis Pro is the specialist B2B marketing agency within Publicis Groupe, the world's number one marketing holding group.” Recorded description excerpt · September 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | The Drumthedrum.com HQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 136 contacts → |
“The Drum covers modern marketing, agency business, creativity & the future of media.” Recorded description excerpt · September 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Goodstuffgoodstuff.co.uk HQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 132 contacts → |
“We are an award-winning media planning and buying agency, helping brands cut through the noise with strategic clarity, inventive solutions, and commercial integrity.” Recorded description excerpt · September 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Redactive Media Groupredactive.co.uk HQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 128 contacts → |
“Redactive is a London-based content and publishing agency that focuses on the core professional body membership sector and has unrivalled experience in this field.” Recorded description excerpt · September 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Zenithzenithmedia.com HQ: London, United KingdomReported employees: 5,001-10,000 | London, United Kingdom | 5,001-10,000 | Exact match | 126 contacts → |
“Zenith is the ROI Agency.” Recorded description excerpt · September 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | NRInridigital.com HQ: London, United KingdomReported employees: 201-500 | London, United Kingdom | 201-500 | Exact match | 126 contacts → |
“NRi Digital creates design-led digital content for B2B and commercial markets.” Recorded description excerpt · September 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Tarsus Grouptarsus.com HQ: London, United KingdomReported employees: 501-1,000 | London, United Kingdom | 501-1,000 | Exact match | 115 contacts → |
“Tarsus Group delivers B2B events across the globe along with digital media & industry-focussed publications.” Recorded description excerpt · September 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | The Kite Factorythekitefactorymedia.com HQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 111 contacts → |
“We’re The Kite Factory, the independent media agency built on Values and Velocity.” Recorded description excerpt · September 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Havas CX Helialon.havas.com HQ: London, United KingdomReported employees: 201-500 | London, United Kingdom | 201-500 | Exact match | 107 contacts → |
“From pigeons to platforms, from news agency to integrated communications services, our story is one of constant reinvention.” Recorded description excerpt · September 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Essencemediacomxessencemediacom.com HQ: London, United KingdomReported employees: 501-1,000 | London, United Kingdom | 501-1,000 | Exact match | 103 contacts → |
“EssenceMediacom is GroupM’s newest and largest agency, committed to delivering breakthroughs for brands in the New Communications Economy.” Recorded description excerpt · September 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Platform Mediaplatformmedia.uk HQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 96 contacts → |
“THE NEXT-GENERATION MEDIA COMPANY Production.” Recorded description excerpt · September 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | FOX Agencyfox.agency HQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 95 contacts → |
“Fox Agency is an integrated agency for global B2B tech brands on a mission: To grow, expand, transform, accelerate, go-to-market, get investment.” Recorded description excerpt · September 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Sundaywearesunday.com HQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 93 contacts → |
“Sunday is an independent content marketing agency based in London.” Recorded description excerpt · September 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Ledger Bennettledgerbennett.com HQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 93 contacts → |
“We’re Ledger Bennett.” Recorded description excerpt · September 23, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 833 company matches
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B2B media agencies: dataset insights
September 23, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
831 records in the displayed employee bands.
2 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
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 833 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 23, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
B2B media agencies by metro in the United Kingdom
Questions about this company list
What does Exact match mean for B2B media agencies?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many B2B media agencies did RevenueBase find based in London, United Kingdom?
The saved snapshot records 833 matching company records, 16,603 tracked contacts and 4,306 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 23, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
B2B media agencies by geography
- B2B media agencies based in the United States
- B2B media agencies based in the United Kingdom
- B2B media agencies based in Brazil
- B2B media agencies based in Germany
- B2B media agencies based in Canada
- B2B media agencies based in Australia
- B2B media agencies based in France
- B2B media agencies based in Spain
- B2B media agencies based in the Netherlands
- B2B media agencies based in Mexico
- B2B media agencies based in South Africa
- B2B media agencies based in Italy
Cite this list
RevenueBase Data Team. Top 25 B2B media agencies based in London, United Kingdom. Snapshot: September 23, 2026. https://revenuebase.ai/companies/b2b-media-agencies/united-kingdom/london.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗