Company lists · Data refreshed November 2026
Top 25 In-depth interview services worldwide
RevenueBase identified 3,794 company matches for in-depth interview services worldwide as of November 2026 and tracks 47,889 professional contacts across them, including 10,271 with verified work emails. The United States is the largest market and London the largest hub.
This list covers company matches for in-depth interview services worldwide, 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 November 6, 2026. Country and city lists for in-depth interview services follow the table.
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 in-depth interview services worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 841 contacts → | ||||
Exact match “Today’s markets demand new research methods.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 2 | 766 contacts → | ||||
Exact match “Hansa Research is a full-service global market research agency conducting research in over 100 countries.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 3 | 709 contacts → | ||||
Exact match “At Market Xcel, we're dedicated to delivering high-quality results for our clients.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 4 | 571 contacts → | ||||
Exact match “Market Research Future (MRFR) is one of the most trusted firms for syndicated research services.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 5 | 536 contacts → | ||||
Exact match “HBG is a market intelligence firm offering insightful, validated & high quality qualitative & quantitative research data solutions to clients across the globe.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 6 | 502 contacts → | ||||
Exact match “Driven by innovation and value addition approach, Allied Market Research is instrumental in market research and business consulting across various industry verticals since its…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 7 | 410 contacts → | ||||
Exact match “TKW Research Group is Australia's most trusted research data collection and recruitment organisation.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 8 | 406 contacts → | ||||
Exact match “Hanover is a leading provider of research and analytics for thousands of organizations worldwide.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 9 | 393 contacts → | ||||
Exact match “INJ Partners is a leading provider of end-to-end market research solutions, helping businesses navigate complex market landscapes with data-driven insights that drive real impact.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 10 | 385 contacts → | ||||
Exact match “American Directions Research Group is one of the largest and most experienced market research survey providers in the United States.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 11 | 351 contacts → | ||||
Exact match “RONIN International is an independent B2B market research company specialising in business, healthcare and tech studies.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 12 | 337 contacts → | ||||
Exact match “Plus 94 Research is a market research company that is so unique in its thinking and vision it is set to significantly enhance the service experience of clients.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 13 | 302 contacts → | ||||
Exact match “Fieldwork is a qualitative research partner.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 14 | 293 contacts → | ||||
Exact match “The Logit Group is an innovative, technology-driven research execution company.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 15 | 280 contacts → | ||||
Exact match “OTR is a leading platform for primary research and one of the largest channel research firms servicing the institutional investment community.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 16 | 277 contacts → | ||||
Exact match “Schlesinger Group is a technology-led data company that delivers a broad range of qualitative and quantitative research solutions to connect human answers to business questions as…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 17 | 271 contacts → | ||||
Exact match “With 25 years of experience as a research and consulting firm, we help organizations and businesses find direction in an increasingly data-complex world, transforming vast…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 18 | 269 contacts → | ||||
Exact match “Markelytics Solutions Ltd.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 19 | 257 contacts → | ||||
Exact match “ActionEdge helps organizations turn questions into clarity through reliable market research and data collection.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 20 | 248 contacts → | ||||
Exact match “Blackstone Group is a full-service custom marketing research and consulting firm providing clients with actionable insights for over 25 years.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 21 | 243 contacts → | ||||
Exact match “C&C Market Research is an industry leading market research field service firm based in Fort Smith, AR, which owns and operates over 36 research facilities in major markets all…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 22 | 235 contacts → | ||||
Exact match “Six Degrees is a leading qualitative research platform driven by expert intelligence.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 23 | 232 contacts → | ||||
Exact match “CID Gallup, leader in market research, has all the tools to design the study that your company needs.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 24 | 228 contacts → | ||||
Exact match “Kudos Research is no longer trading.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 25 | 220 contacts → | ||||
Exact match “At L&E we make connections to create conversations that help our clients make better decisions, allowing us to give back to our communities and grow our connections.” Recorded in the RevenueBase company graph · Nov 6, 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 “in-depth interview services”. 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 3,794 in-depth interview services worldwide
See the full list, filter by size, metro and specialty, and access 10,271 tracked professional contacts with verified work emails. Direct dials are available where recorded.
Free signup · no credit card
In-depth interview services worldwide at a glance
As of Nov 6, 2026Companies by employee count
Email recency is reported on each country list linked below.
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.
- Coverage
- Every country. Country and city lists for in-depth interview services are linked below.
- What qualifies
- Company records worldwide whose business descriptions match “in-depth interview services” 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. 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 10,271 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 November 6, 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.
In-depth interview services by location
29 lists · largest firstEvery In-depth interview services list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- In-depth interview services based in the United States959
- In-depth interview services based in India436
- In-depth interview services based in the United Kingdom332
- In-depth interview services based in Brazil140
- In-depth interview services based in Germany112
- In-depth interview services based in Canada106
- In-depth interview services based in France100
- In-depth interview services based in Australia82
- In-depth interview services based in Spain69
- In-depth interview services based in Mexico53
- In-depth interview services based in Italy48
- In-depth interview services based in South Africa41
- In-depth interview services based in the Netherlands41
- In-depth interview services based in Türkiye29
- In-depth interview services based in the United Arab Emirates25
Cities
- In-depth interview services based in London, United Kingdom139
- In-depth interview services based in New Delhi, India91
- In-depth interview services based in New York, United States79
- In-depth interview services based in Sao Paulo, Brazil68
- In-depth interview services based in Mumbai, India49
- In-depth interview services based in Chicago, United States40
- In-depth interview services based in Paris, France37
- In-depth interview services based in Toronto, Canada37
- In-depth interview services based in Los Angeles, United States34
- In-depth interview services based in Bangalore, India28
- In-depth interview services based in Gurgaon, India28
- In-depth interview services based in Madrid, Spain28
- In-depth interview services based in Noida, India27
- In-depth interview services based in San Francisco, United States25
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 “in-depth interview services”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many in-depth interview services are there worldwide?
RevenueBase identified 3,794 company matches for in-depth interview services worldwide as of November 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?
SAGO tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which country has the most in-depth interview services?
The United States leads with 959 companies, followed by India (436) and the United Kingdom (332). Every in-depth interview services list by country and city is linked on this page.
Which city has the most in-depth interview services?
London leads with 140 company records, followed by New Delhi (91) and New York (80).
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 10,271 professional contacts with verified work emails tracked across these 3,794 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 November 6, 2026.
Ready to reach these companies? Verified emails and direct dials for all 3,794 in-depth interview services worldwide. Start with a free account, no credit card.
Download this list →Related lists
Browse the directory
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 in-depth interview services worldwide
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 3,794 matching company records for in-depth interview services worldwide, with 47,889 tracked contacts and 10,271 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: November 6, 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 in-depth interview services worldwide
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 |  SAGOsago.comHQ: Iselin, NJ, United StatesReported employees: 1,001-5,000 | Iselin, NJ, United States | 1,001-5,000 | Exact match | 841 contacts → |
“Today’s markets demand new research methods.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Hansa Research Grouphansaresearch.comHQ: Mumbai, IndiaReported employees: 501-1,000 | Mumbai, India | 501-1,000 | Exact match | 766 contacts → |
“Hansa Research is a full-service global market research agency conducting research in over 100 countries.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  Market Xcelmarket-xcel.comHQ: New Delhi, IndiaReported employees: 501-1,000 | New Delhi, India | 501-1,000 | Exact match | 709 contacts → |
“At Market Xcel, we're dedicated to delivering high-quality results for our clients.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Market Research Future Mrfrmarketresearchfuture.comHQ: New York, NY, United StatesReported employees: 201-500 | New York, NY, United States | 201-500 | Exact match | 571 contacts → |
“Market Research Future (MRFR) is one of the most trusted firms for syndicated research services.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  High Beam Global HBGhbgknowledge.comHQ: Gurgaon, IndiaReported employees: 51-200 | Gurgaon, India | 51-200 | Exact match | 536 contacts → |
“HBG is a market intelligence firm offering insightful, validated & high quality qualitative & quantitative research data solutions to clients across the globe.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  Allied Market Researchalliedmarketresearch.comHQ: Wilmington, DE, United StatesReported employees: 501-1,000 | Wilmington, DE, United States | 501-1,000 | Exact match | 502 contacts → |
“Driven by innovation and value addition approach, Allied Market Research is instrumental in market research and business consulting across various industry verticals since its…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  TKW Research Grouptkwresearch.com.auHQ: Seaford, AustraliaReported employees: 201-500 | Seaford, Australia | 201-500 | Exact match | 410 contacts → |
“TKW Research Group is Australia's most trusted research data collection and recruitment organisation.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  Hanover Researchhanoverresearch.comHQ: Arlington, NY, United StatesReported employees: 201-500 | Arlington, NY, United States | 201-500 | Exact match | 406 contacts → |
“Hanover is a leading provider of research and analytics for thousands of organizations worldwide.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  INJ Partnersinjpartners.comHQ: Kowloon, Hong KongReported employees: 501-1,000 | Kowloon, Hong Kong | 501-1,000 | Exact match | 393 contacts → |
“INJ Partners is a leading provider of end-to-end market research solutions, helping businesses navigate complex market landscapes with data-driven insights that drive real impact.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  American Directions Research Groupamericandirections.comHQ: Washington, DC, United StatesReported employees: 201-500 | Washington, DC, United States | 201-500 | Exact match | 385 contacts → |
“American Directions Research Group is one of the largest and most experienced market research survey providers in the United States.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  Ronin Internationalronin.comHQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 351 contacts → |
“RONIN International is an independent B2B market research company specialising in business, healthcare and tech studies.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Plus 94 Researchplus94.co.zaHQ: Johannesburg, South AfricaReported employees: 1,001-5,000 | Johannesburg, South Africa | 1,001-5,000 | Exact match | 337 contacts → |
“Plus 94 Research is a market research company that is so unique in its thinking and vision it is set to significantly enhance the service experience of clients.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Fieldworkfieldwork.comHQ: Chicago, TX, United StatesReported employees: 501-1,000 | Chicago, TX, United States | 501-1,000 | Exact match | 302 contacts → |
“Fieldwork is a qualitative research partner.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  The Logit Group, INClogitgroup.comHQ: Toronto, QC, CanadaReported employees: 201-500 | Toronto, QC, Canada | 201-500 | Exact match | 293 contacts → |
“The Logit Group is an innovative, technology-driven research execution company.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  OTR Globalotrglobal.comHQ: Purchase, United StatesReported employees: 201-500 | Purchase, United States | 201-500 | Exact match | 280 contacts → |
“OTR is a leading platform for primary research and one of the largest channel research firms servicing the institutional investment community.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Schlesinger Groupschlesingergroup.comHQ: Iselin, GA, United StatesReported employees: 1,001-5,000 | Iselin, GA, United States | 1,001-5,000 | Exact match | 277 contacts → |
“Schlesinger Group is a technology-led data company that delivers a broad range of qualitative and quantitative research solutions to connect human answers to business questions as…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Epinionepinionglobal.comHQ: Copenhagen N, DenmarkReported employees: 51-200 | Copenhagen N, Denmark | 51-200 | Exact match | 271 contacts → |
“With 25 years of experience as a research and consulting firm, we help organizations and businesses find direction in an increasingly data-complex world, transforming vast…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Markelytics Solutionsmarkelytics.comHQ: Bangalore, IndiaReported employees: 501-1,000 | Bangalore, India | 501-1,000 | Exact match | 269 contacts → |
“Markelytics Solutions Ltd.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Actionedge Research Services LLPaction-edge.comHQ: Ahmedabad, IndiaReported employees: 51-200 | Ahmedabad, India | 51-200 | Exact match | 257 contacts → |
“ActionEdge helps organizations turn questions into clarity through reliable market research and data collection.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  Blackstone Groupbgglobal.comHQ: Chicago, IL, United StatesReported employees: 51-200 | Chicago, IL, United States | 51-200 | Exact match | 248 contacts → |
“Blackstone Group is a full-service custom marketing research and consulting firm providing clients with actionable insights for over 25 years.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  C&c Market Research, INCccmarketresearch.comHQ: Fort Smith, TX, United StatesReported employees: 501-1,000 | Fort Smith, TX, United States | 501-1,000 | Exact match | 243 contacts → |
“C&C Market Research is an industry leading market research field service firm based in Fort Smith, AR, which owns and operates over 36 research facilities in major markets all…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  SIX Degrees Intelligencesixdegreesint.comHQ: Hangzhou, ChinaReported employees: 201-500 | Hangzhou, China | 201-500 | Exact match | 235 contacts → |
“Six Degrees is a leading qualitative research platform driven by expert intelligence.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  CID Gallupcidgallup.comHQ: San José, Costa RicaReported employees: 201-500 | San José, Costa Rica | 201-500 | Exact match | 232 contacts → |
“CID Gallup, leader in market research, has all the tools to design the study that your company needs.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  Kudos Researchkudosresearch.comHQ: London, United KingdomReported employees: Not recorded | London, United Kingdom | Not recorded | Exact match | 228 contacts → |
“Kudos Research is no longer trading.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  L&e Researchleresearch.comHQ: Raleigh, CO, United StatesReported employees: 201-500 | Raleigh, CO, United States | 201-500 | Exact match | 220 contacts → |
“At L&E we make connections to create conversations that help our clients make better decisions, allowing us to give back to our communities and grow our connections.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 3,794 company matches
Build a targeted audience, find relevant contacts and export available records to your workflow.
Free signup · 500 credits · limited free results
In-depth interview services: dataset insights
November 6, 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
3,773 records in the displayed employee bands.
21 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 country list rather than for Worldwide, so it is reported there. Company counts and contact totals on this page are exact for Worldwide, over 3,794 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: November 6, 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 ↗
In-depth interview services by location
29 lists · largest firstEvery In-depth interview services list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- In-depth interview services based in the United States959
- In-depth interview services based in India436
- In-depth interview services based in the United Kingdom332
- In-depth interview services based in Brazil140
- In-depth interview services based in Germany112
- In-depth interview services based in Canada106
- In-depth interview services based in France100
- In-depth interview services based in Australia82
- In-depth interview services based in Spain69
- In-depth interview services based in Mexico53
- In-depth interview services based in Italy48
- In-depth interview services based in South Africa41
- In-depth interview services based in the Netherlands41
- In-depth interview services based in Türkiye29
- In-depth interview services based in the United Arab Emirates25
Cities
- In-depth interview services based in London, United Kingdom139
- In-depth interview services based in New Delhi, India91
- In-depth interview services based in New York, United States79
- In-depth interview services based in Sao Paulo, Brazil68
- In-depth interview services based in Mumbai, India49
- In-depth interview services based in Chicago, United States40
- In-depth interview services based in Paris, France37
- In-depth interview services based in Toronto, Canada37
- In-depth interview services based in Los Angeles, United States34
- In-depth interview services based in Bangalore, India28
- In-depth interview services based in Gurgaon, India28
- In-depth interview services based in Madrid, Spain28
- In-depth interview services based in Noida, India27
- In-depth interview services based in San Francisco, United States25
Questions about this company list
What does Exact match mean for in-depth interview services?
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 in-depth interview services did RevenueBase find worldwide?
The saved snapshot records 3,794 matching company records, 47,889 tracked contacts and 10,271 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: November 6, 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
Browse the directory
Cite this list
RevenueBase Data Team. Top 25 in-depth interview services worldwide. Snapshot: November 6, 2026. https://revenuebase.ai/companies/browse/in-depth-interview-services.
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 in-depth interview services worldwide
RevenueBase records 3,794 matching company records for in-depth interview services worldwide, with 47,889 tracked contacts and 10,271 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: November 6, 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 in-depth interview services worldwide
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 | SAGOsago.com HQ: Iselin, NJ, United StatesReported employees: 1,001-5,000 | Iselin, NJ, United States | 1,001-5,000 | Exact match | 841 contacts → |
“Today’s markets demand new research methods.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Hansa Research Grouphansaresearch.com HQ: Mumbai, IndiaReported employees: 501-1,000 | Mumbai, India | 501-1,000 | Exact match | 766 contacts → |
“Hansa Research is a full-service global market research agency conducting research in over 100 countries.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Market Xcelmarket-xcel.com HQ: New Delhi, IndiaReported employees: 501-1,000 | New Delhi, India | 501-1,000 | Exact match | 709 contacts → |
“At Market Xcel, we're dedicated to delivering high-quality results for our clients.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Market Research Future Mrfrmarketresearchfuture.com HQ: New York, NY, United StatesReported employees: 201-500 | New York, NY, United States | 201-500 | Exact match | 571 contacts → |
“Market Research Future (MRFR) is one of the most trusted firms for syndicated research services.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | High Beam Global HBGhbgknowledge.com HQ: Gurgaon, IndiaReported employees: 51-200 | Gurgaon, India | 51-200 | Exact match | 536 contacts → |
“HBG is a market intelligence firm offering insightful, validated & high quality qualitative & quantitative research data solutions to clients across the globe.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Allied Market Researchalliedmarketresearch.com HQ: Wilmington, DE, United StatesReported employees: 501-1,000 | Wilmington, DE, United States | 501-1,000 | Exact match | 502 contacts → |
“Driven by innovation and value addition approach, Allied Market Research is instrumental in market research and business consulting across various industry verticals since its…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | TKW Research Grouptkwresearch.com.au HQ: Seaford, AustraliaReported employees: 201-500 | Seaford, Australia | 201-500 | Exact match | 410 contacts → |
“TKW Research Group is Australia's most trusted research data collection and recruitment organisation.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Hanover Researchhanoverresearch.com HQ: Arlington, NY, United StatesReported employees: 201-500 | Arlington, NY, United States | 201-500 | Exact match | 406 contacts → |
“Hanover is a leading provider of research and analytics for thousands of organizations worldwide.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | INJ Partnersinjpartners.com HQ: Kowloon, Hong KongReported employees: 501-1,000 | Kowloon, Hong Kong | 501-1,000 | Exact match | 393 contacts → |
“INJ Partners is a leading provider of end-to-end market research solutions, helping businesses navigate complex market landscapes with data-driven insights that drive real impact.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | American Directions Research Groupamericandirections.com HQ: Washington, DC, United StatesReported employees: 201-500 | Washington, DC, United States | 201-500 | Exact match | 385 contacts → |
“American Directions Research Group is one of the largest and most experienced market research survey providers in the United States.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Ronin Internationalronin.com HQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 351 contacts → |
“RONIN International is an independent B2B market research company specialising in business, healthcare and tech studies.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Plus 94 Researchplus94.co.za HQ: Johannesburg, South AfricaReported employees: 1,001-5,000 | Johannesburg, South Africa | 1,001-5,000 | Exact match | 337 contacts → |
“Plus 94 Research is a market research company that is so unique in its thinking and vision it is set to significantly enhance the service experience of clients.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Fieldworkfieldwork.com HQ: Chicago, TX, United StatesReported employees: 501-1,000 | Chicago, TX, United States | 501-1,000 | Exact match | 302 contacts → |
“Fieldwork is a qualitative research partner.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | The Logit Group, INClogitgroup.com HQ: Toronto, QC, CanadaReported employees: 201-500 | Toronto, QC, Canada | 201-500 | Exact match | 293 contacts → |
“The Logit Group is an innovative, technology-driven research execution company.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | OTR Globalotrglobal.com HQ: Purchase, United StatesReported employees: 201-500 | Purchase, United States | 201-500 | Exact match | 280 contacts → |
“OTR is a leading platform for primary research and one of the largest channel research firms servicing the institutional investment community.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Schlesinger Groupschlesingergroup.com HQ: Iselin, GA, United StatesReported employees: 1,001-5,000 | Iselin, GA, United States | 1,001-5,000 | Exact match | 277 contacts → |
“Schlesinger Group is a technology-led data company that delivers a broad range of qualitative and quantitative research solutions to connect human answers to business questions as…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Epinionepinionglobal.com HQ: Copenhagen N, DenmarkReported employees: 51-200 | Copenhagen N, Denmark | 51-200 | Exact match | 271 contacts → |
“With 25 years of experience as a research and consulting firm, we help organizations and businesses find direction in an increasingly data-complex world, transforming vast…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Markelytics Solutionsmarkelytics.com HQ: Bangalore, IndiaReported employees: 501-1,000 | Bangalore, India | 501-1,000 | Exact match | 269 contacts → |
“Markelytics Solutions Ltd.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Actionedge Research Services LLPaction-edge.com HQ: Ahmedabad, IndiaReported employees: 51-200 | Ahmedabad, India | 51-200 | Exact match | 257 contacts → |
“ActionEdge helps organizations turn questions into clarity through reliable market research and data collection.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Blackstone Groupbgglobal.com HQ: Chicago, IL, United StatesReported employees: 51-200 | Chicago, IL, United States | 51-200 | Exact match | 248 contacts → |
“Blackstone Group is a full-service custom marketing research and consulting firm providing clients with actionable insights for over 25 years.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | C&c Market Research, INCccmarketresearch.com HQ: Fort Smith, TX, United StatesReported employees: 501-1,000 | Fort Smith, TX, United States | 501-1,000 | Exact match | 243 contacts → |
“C&C Market Research is an industry leading market research field service firm based in Fort Smith, AR, which owns and operates over 36 research facilities in major markets all…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | SIX Degrees Intelligencesixdegreesint.com HQ: Hangzhou, ChinaReported employees: 201-500 | Hangzhou, China | 201-500 | Exact match | 235 contacts → |
“Six Degrees is a leading qualitative research platform driven by expert intelligence.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | CID Gallupcidgallup.com HQ: San José, Costa RicaReported employees: 201-500 | San José, Costa Rica | 201-500 | Exact match | 232 contacts → |
“CID Gallup, leader in market research, has all the tools to design the study that your company needs.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Kudos Researchkudosresearch.com HQ: London, United KingdomReported employees: Not recorded | London, United Kingdom | Not recorded | Exact match | 228 contacts → |
“Kudos Research is no longer trading.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | L&e Researchleresearch.com HQ: Raleigh, CO, United StatesReported employees: 201-500 | Raleigh, CO, United States | 201-500 | Exact match | 220 contacts → |
“At L&E we make connections to create conversations that help our clients make better decisions, allowing us to give back to our communities and grow our connections.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 3,794 company matches
Build a targeted audience, find relevant contacts and export available records to your workflow.
Free signup · 500 credits · limited free results
In-depth interview services: dataset insights
November 6, 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
3,773 records in the displayed employee bands.
21 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 country list rather than for Worldwide, so it is reported there. Company counts and contact totals on this page are exact for Worldwide, over 3,794 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: November 6, 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 ↗
In-depth interview services by location
29 lists · largest firstEvery In-depth interview services list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- In-depth interview services based in the United States959
- In-depth interview services based in India436
- In-depth interview services based in the United Kingdom332
- In-depth interview services based in Brazil140
- In-depth interview services based in Germany112
- In-depth interview services based in Canada106
- In-depth interview services based in France100
- In-depth interview services based in Australia82
- In-depth interview services based in Spain69
- In-depth interview services based in Mexico53
- In-depth interview services based in Italy48
- In-depth interview services based in South Africa41
- In-depth interview services based in the Netherlands41
- In-depth interview services based in Türkiye29
- In-depth interview services based in the United Arab Emirates25
Cities
- In-depth interview services based in London, United Kingdom139
- In-depth interview services based in New Delhi, India91
- In-depth interview services based in New York, United States79
- In-depth interview services based in Sao Paulo, Brazil68
- In-depth interview services based in Mumbai, India49
- In-depth interview services based in Chicago, United States40
- In-depth interview services based in Paris, France37
- In-depth interview services based in Toronto, Canada37
- In-depth interview services based in Los Angeles, United States34
- In-depth interview services based in Bangalore, India28
- In-depth interview services based in Gurgaon, India28
- In-depth interview services based in Madrid, Spain28
- In-depth interview services based in Noida, India27
- In-depth interview services based in San Francisco, United States25
Questions about this company list
What does Exact match mean for in-depth interview services?
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 in-depth interview services did RevenueBase find worldwide?
The saved snapshot records 3,794 matching company records, 47,889 tracked contacts and 10,271 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: November 6, 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
Browse the directory
Cite this list
RevenueBase Data Team. Top 25 in-depth interview services worldwide. Snapshot: November 6, 2026. https://revenuebase.ai/companies/browse/in-depth-interview-services.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗