Company lists · Data refreshed September 2026
Top 25 Advertising research agencies based in London, United Kingdom
RevenueBase identified 116 company matches for advertising research agencies associated with London, United Kingdom as of September 2026 and tracks 2,976 professional contacts across them, including 1,006 with verified work emails and 243 with mobile numbers. Across the United Kingdom, London is the largest hub for this category.
This list covers company matches for advertising research 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 19, 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 advertising research agencies based in London, United Kingdom
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 1,306 contacts → | ||||
Exact match “Kantar Media is now Fifty5Blue.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 2 | 625 contacts → | ||||
Exact match “Ebiquity is the independent authority in Marketing Effectiveness.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 3 | 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 19, 2026 · View company records in RevenueBase | |||||
| 4 | 66 contacts → | ||||
Exact match “Research that helps brands glow and grow’ is the simple expression of everything we do.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 5 | 66 contacts → | ||||
Exact match “Powered by client ratings, global awards data, and results from The Drum Awards, The Drum Recommends provides comprehensive research to help you make informed, confident decisions…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 6 | 54 contacts → | ||||
Exact match “Adwanted UK, part of Adwanted Group, is the UK’s leading provider of media tech, data and thought-leadership.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 7 | 40 contacts → | ||||
Exact match “We’re a Certified B Corp™, full-service market research agency based in London, and we're experts in B2B & Technology market research.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 8 | 35 contacts → | ||||
Exact match “RSMB was established in 1987 to offer high quality design and operations in the field of television audience measurement.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 9 | 26 contacts → | ||||
Exact match “KidsKnowBest is an audience-specialist research & marketing agency.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 10 | 24 contacts → | ||||
Exact match “Where people and creativity drive real results.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 11 | 22 contacts → | ||||
Exact match “Operations Built for Custom Recruitment/Interviewing!” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 12 | 18 contacts → | ||||
Exact match “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.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 13 | 16 contacts → | ||||
Exact match “Opinion Matters is a communications driven research specialist providing consultancy and conducting research on behalf of brands, companies and organisations directly as well as…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 14 | 13 contacts → | ||||
Exact match “We're an award winning research agency that believes disruption is a mindset.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 15 | 12 contacts → | ||||
Exact match “Rigorous.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 16 | 11 contacts → | ||||
Exact match “Alligator is now part of Ipsos, and using the Ipsos brand name, following acquisition in June 2025.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 17 | 8 contacts → | ||||
Exact match “Market research is a competitive activity.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 18 | 8 contacts → | ||||
Exact match “Route is an entirely independent research organisation, providing audience estimates to the out-of-home industry in Britain.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 19 | 7 contacts → | ||||
Exact match “At Myriad, we believe that everyone can benefit from guessing less and knowing more – which is where robust, high-quality research can help.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 20 | 6 contacts → | ||||
Exact match “Kanso is a leading marketing effectiveness consultancy.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 21 | 6 contacts → | ||||
Exact match “At ASR We help you understand peoples’ behaviour, motivations and preferences so that you can create better products and services for them.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 22 | 5 contacts → | ||||
Exact match “Identifying the best participants for your qual market research.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 23 | 4 contacts → | ||||
Exact match “The best decisions aren't made on gut feeling alone.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 24 | 4 contacts → | ||||
Exact match “MWI are a full service advertising & marketing agency specialising in everything from media planning, buying & campaign management, digital advertising and creative.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 25 | 4 contacts → | ||||
Exact match “A research consultancy run by experienced business professionals providing commercial advice by understanding needs and behaviours in your market.” Recorded in the RevenueBase company graph · Sep 19, 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 “advertising research 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 116 advertising research agencies based in London, United Kingdom
See the full list, filter by size, metro and specialty, and access 1,006 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Advertising research agencies based in London, United Kingdom at a glance
As of Sep 19, 2026Companies by employee count
Freshness & accuracy
How recently the business emails were verified and the company information checked
Email last verified
Median 22.0dCompany record updated
Median 84.0dHow 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 “advertising research 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 1,006 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 19, 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.
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 “advertising research agencies”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many advertising research agencies are there based in London, United Kingdom?
RevenueBase identified 116 company matches for advertising research 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?
Kantar Media 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 advertising research agencies?
London leads the United Kingdom with 95 company records, followed by Bristol (5) and Leeds (5).
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 1,006 professional contacts with verified work emails tracked across these 116 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 19, 2026.
Ready to reach these companies? Verified emails and direct dials for all 116 advertising research agencies based in London, United Kingdom. Start with a free account, no credit card.
Download this list →Related lists
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- Advertising research agencies based in Australia
- Advertising research agencies based in Brazil
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- Advertising research agencies based in France
- Advertising research agencies based in Germany
- Advertising research agencies based in India
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
- All company lists
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- Lists A-Z
- New lists
- Advertising research agencies based in Sao Paulo, Brazil
- Advertising research agencies based in Paris, France
- Advertising research agencies based in Mumbai, India
- Advertising research agencies based in New Delhi, India
- Advertising research agencies based in Madrid, Spain
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Company intelligence · public preview
Top 25 advertising research 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 116 matching company records for advertising research agencies based in London, United Kingdom, with 2,976 tracked contacts and 1,006 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 19, 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 advertising research 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 |  Kantar Mediafifty5blue.comHQ: London, United KingdomReported employees: 1,001-5,000 | London, United Kingdom | 1,001-5,000 | Exact match | 1,306 contacts → |
“Kantar Media is now Fifty5Blue.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Ebiquity PLCebiquity.comHQ: London, United KingdomReported employees: 501-1,000 | London, United Kingdom | 501-1,000 | Exact match | 625 contacts → |
“Ebiquity is the independent authority in Marketing Effectiveness.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  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 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  The Nursery Research & Planningthe-nursery.netHQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 66 contacts → |
“Research that helps brands glow and grow’ is the simple expression of everything we do.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  The Drum Recommendsthedrum.comHQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 66 contacts → |
“Powered by client ratings, global awards data, and results from The Drum Awards, The Drum Recommends provides comprehensive research to help you make informed, confident decisions…” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  Adwanted UK B Corpadwanted.comHQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 54 contacts → |
“Adwanted UK, part of Adwanted Group, is the UK’s leading provider of media tech, data and thought-leadership.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Sapio Researchsapioresearch.comHQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 40 contacts → |
“We’re a Certified B Corp™, full-service market research agency based in London, and we're experts in B2B & Technology market research.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  RSMBrsmb.solutionsHQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 35 contacts → |
“RSMB was established in 1987 to offer high quality design and operations in the field of television audience measurement.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Kidsknowbestkidsknowbest.co.uk HQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 26 contacts → |
“KidsKnowBest is an audience-specialist research & marketing agency.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Smithfield Agencysmithfieldagency.comHQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 24 contacts → |
“Where people and creativity drive real results.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  Integral Researchintegralresearch.comHQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 22 contacts → |
“Operations Built for Custom Recruitment/Interviewing!” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  White Spider Mediawhitespidermedia.comHQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 18 contacts → |
“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.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Opinion Mattersopinionmatters.com HQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 16 contacts → |
“Opinion Matters is a communications driven research specialist providing consultancy and conducting research on behalf of brands, companies and organisations directly as well as…” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Disrupt Insightdisrupt-insight.com HQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 13 contacts → |
“We're an award winning research agency that believes disruption is a mindset.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  Metametricsmetametrics.co.ukHQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 12 contacts → |
“Rigorous.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Alligator Digitalalligator-digital.comHQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 11 contacts → |
“Alligator is now part of Ipsos, and using the Ipsos brand name, following acquisition in June 2025.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  FLOODflood.partnersHQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 8 contacts → |
“Market research is a competitive activity.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Route Research LTDroute.org.uk HQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 8 contacts → |
“Route is an entirely independent research organisation, providing audience estimates to the out-of-home industry in Britain.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Myriad Researchmyriadresearch.co.uk HQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 7 contacts → |
“At Myriad, we believe that everyone can benefit from guessing less and knowing more – which is where robust, high-quality research can help.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  Kanso Marketingkansomarketing.comHQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 6 contacts → |
“Kanso is a leading marketing effectiveness consultancy.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  ASR Associatesasr-associates.comHQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 6 contacts → |
“At ASR We help you understand peoples’ behaviour, motivations and preferences so that you can create better products and services for them.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  Saros Research LTDsarosresearch.comHQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 5 contacts → |
“Identifying the best participants for your qual market research.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Beautiful Insightsbeautifulinsights.com HQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 4 contacts → |
“The best decisions aren't made on gut feeling alone.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  MWI Globalmwiglobal.comHQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 4 contacts → |
“MWI are a full service advertising & marketing agency specialising in everything from media planning, buying & campaign management, digital advertising and creative.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  IC Researchicresearch.co.ukHQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 4 contacts → |
“A research consultancy run by experienced business professionals providing commercial advice by understanding needs and behaviours in your market.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 116 company matches
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Advertising research agencies: dataset insights
September 19, 2026These summaries describe recorded coverage in this saved dataset. Coverage describes records in RevenueBase, rather than a census of every business in this market.
Reported company sizes
115 records in the displayed employee bands.
1 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Freshness & accuracy
How recently the business emails were verified and the company information checked
Email last verified
Median 22.0dCompany record updated
Median 84.0dHow 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.
Coverage describes records in RevenueBase, rather than a census of every business in this market.
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 19, 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 ↗
Questions about this company list
What does Exact match mean for advertising research 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 advertising research agencies did RevenueBase find based in London, United Kingdom?
The saved snapshot records 116 matching company records, 2,976 tracked contacts and 1,006 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 19, 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
Advertising research agencies by geography
- Advertising research agencies based in Sao Paulo, Brazil
- Advertising research agencies based in Paris, France
- Advertising research agencies based in Mumbai, India
- Advertising research agencies based in New Delhi, India
- Advertising research agencies based in Madrid, Spain
- Advertising research agencies based in New York, United States
- Advertising research agencies based in Australia
- Advertising research agencies based in Brazil
- Advertising research agencies based in Canada
- Advertising research agencies based in France
- Advertising research agencies based in Germany
- Advertising research agencies based in India
Cite this list
RevenueBase Data Team. Top 25 advertising research agencies based in London, United Kingdom. Snapshot: September 19, 2026. https://revenuebase.ai/companies/advertising-research-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
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Advertising research agencies based in Sao Paulo, Brazil
- Advertising research agencies based in Paris, France
- Advertising research agencies based in Mumbai, India
- Advertising research agencies based in New Delhi, India
- Advertising research agencies based in Madrid, Spain
- Advertising research agencies based in New York, United States
Company intelligence · public preview
Top 25 advertising research agencies based in London, United Kingdom
RevenueBase records 116 matching company records for advertising research agencies based in London, United Kingdom, with 2,976 tracked contacts and 1,006 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 19, 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 advertising research 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 | Kantar Mediafifty5blue.com HQ: London, United KingdomReported employees: 1,001-5,000 | London, United Kingdom | 1,001-5,000 | Exact match | 1,306 contacts → |
“Kantar Media is now Fifty5Blue.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Ebiquity PLCebiquity.com HQ: London, United KingdomReported employees: 501-1,000 | London, United Kingdom | 501-1,000 | Exact match | 625 contacts → |
“Ebiquity is the independent authority in Marketing Effectiveness.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | 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 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | The Nursery Research & Planningthe-nursery.net HQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 66 contacts → |
“Research that helps brands glow and grow’ is the simple expression of everything we do.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | The Drum Recommendsthedrum.com HQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 66 contacts → |
“Powered by client ratings, global awards data, and results from The Drum Awards, The Drum Recommends provides comprehensive research to help you make informed, confident decisions…” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Adwanted UK B Corpadwanted.com HQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 54 contacts → |
“Adwanted UK, part of Adwanted Group, is the UK’s leading provider of media tech, data and thought-leadership.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Sapio Researchsapioresearch.com HQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 40 contacts → |
“We’re a Certified B Corp™, full-service market research agency based in London, and we're experts in B2B & Technology market research.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | RSMBrsmb.solutions HQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 35 contacts → |
“RSMB was established in 1987 to offer high quality design and operations in the field of television audience measurement.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Kidsknowbestkidsknowbest.co.uk HQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 26 contacts → |
“KidsKnowBest is an audience-specialist research & marketing agency.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Smithfield Agencysmithfieldagency.com HQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 24 contacts → |
“Where people and creativity drive real results.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Integral Researchintegralresearch.com HQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 22 contacts → |
“Operations Built for Custom Recruitment/Interviewing!” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | White Spider Mediawhitespidermedia.com HQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 18 contacts → |
“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.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Opinion Mattersopinionmatters.com HQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 16 contacts → |
“Opinion Matters is a communications driven research specialist providing consultancy and conducting research on behalf of brands, companies and organisations directly as well as…” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Disrupt Insightdisrupt-insight.com HQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 13 contacts → |
“We're an award winning research agency that believes disruption is a mindset.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Metametricsmetametrics.co.uk HQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 12 contacts → |
“Rigorous.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Alligator Digitalalligator-digital.com HQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 11 contacts → |
“Alligator is now part of Ipsos, and using the Ipsos brand name, following acquisition in June 2025.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | FLOODflood.partners HQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 8 contacts → |
“Market research is a competitive activity.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Route Research LTDroute.org.uk HQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 8 contacts → |
“Route is an entirely independent research organisation, providing audience estimates to the out-of-home industry in Britain.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Myriad Researchmyriadresearch.co.uk HQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 7 contacts → |
“At Myriad, we believe that everyone can benefit from guessing less and knowing more – which is where robust, high-quality research can help.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Kanso Marketingkansomarketing.com HQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 6 contacts → |
“Kanso is a leading marketing effectiveness consultancy.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | ASR Associatesasr-associates.com HQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 6 contacts → |
“At ASR We help you understand peoples’ behaviour, motivations and preferences so that you can create better products and services for them.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Saros Research LTDsarosresearch.com HQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 5 contacts → |
“Identifying the best participants for your qual market research.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Beautiful Insightsbeautifulinsights.com HQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 4 contacts → |
“The best decisions aren't made on gut feeling alone.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | MWI Globalmwiglobal.com HQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 4 contacts → |
“MWI are a full service advertising & marketing agency specialising in everything from media planning, buying & campaign management, digital advertising and creative.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | IC Researchicresearch.co.uk HQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 4 contacts → |
“A research consultancy run by experienced business professionals providing commercial advice by understanding needs and behaviours in your market.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 116 company matches
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Advertising research agencies: dataset insights
September 19, 2026These summaries describe recorded coverage in this saved dataset. Coverage describes records in RevenueBase, rather than a census of every business in this market.
Reported company sizes
115 records in the displayed employee bands.
1 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Freshness & accuracy
How recently the business emails were verified and the company information checked
Email last verified
Median 22.0dCompany record updated
Median 84.0dHow 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.
Coverage describes records in RevenueBase, rather than a census of every business in this market.
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 19, 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 ↗
Questions about this company list
What does Exact match mean for advertising research 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 advertising research agencies did RevenueBase find based in London, United Kingdom?
The saved snapshot records 116 matching company records, 2,976 tracked contacts and 1,006 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 19, 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.
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- Advertising research agencies based in Germany
- Advertising research agencies based in India
Cite this list
RevenueBase Data Team. Top 25 advertising research agencies based in London, United Kingdom. Snapshot: September 19, 2026. https://revenuebase.ai/companies/advertising-research-agencies/united-kingdom/london.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
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