Company lists · Data refreshed September 2026
Top 25 Due diligence investigation firms worldwide
RevenueBase identified 856 company matches for due diligence investigation firms worldwide as of September 2026 and tracks 8,518 professional contacts across them, including 1,788 with verified work emails. The United States is the largest market and London the largest hub.
This list covers company matches for due diligence investigation firms 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 September 19, 2026. Country and city lists for due diligence investigation firms 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 due diligence investigation firms worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 264 contacts → | ||||
Exact match “iCOVER Group provides high-quality Third-Party Background Screening, Monitoring, and Due Diligence services.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 2 | 195 contacts → | ||||
Exact match “At IISERVZ, we're not just providing a service; we're delivering a solution.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 3 | 159 contacts → | ||||
Exact match “By leveraging cutting-edge technology and experienced analysts, Neotas are going beyond and setting new standards in Due Diligence, Staff Screening, and Compliance.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 4 | 146 contacts → | ||||
Exact match “A federally qualified Small Business, IDS offers end to end investigative solutions tailored to meet the specific needs of our clients.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 5 | 142 contacts → | ||||
Exact match “PSA is a global due diligence and investigations firm headquartered in Washington, DC.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 6 | 140 contacts → | ||||
Exact match “Corporate Research and Investigations Limited is a global provider of investigative research, background screening and business due diligence services for the world’s leading…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 7 | 117 contacts → | ||||
Exact match “FACT are at the forefront of investigative and intelligence services, recognised by organisations, law enforcement, and governments worldwide.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 8 | 115 contacts → | ||||
Exact match “Evaluationz India Pvt Ltd is a background Verification and Assessment firm.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 9 | 112 contacts → | ||||
Exact match “Every decision carries a risk.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 10 | 108 contacts → | ||||
Exact match “Africa's Leading Background Screening and Due Diligence Company, built on trust for people and enterprise.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 11 | 107 contacts → | ||||
Exact match “Alias Intelligence is a leading background investigations and due diligence company delivering the information and insights our clients need to grow and navigate their businesses.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 12 | 81 contacts → | ||||
Exact match “VERIS is a professional background screening and due diligence company supporting organizations in making informed, risk-aware decisions.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 13 | 81 contacts → | ||||
Exact match “Crystal Screening Services – Secure Your Workforce with Confidence In today’s fast-moving business environment, hiring the right people isn’t just important-it’s critical.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 14 | 75 contacts → | ||||
Exact match “Blue Heron Research Partners is an international leader in qualitative due diligence.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 15 | 72 contacts → | ||||
Exact match “Integrated Security Services, Inc.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 16 | 67 contacts → | ||||
Exact match “Ashland Partners & Company LLP is a PCAOB registered, specialty CPA firm providing due diligence solutions to the investment management industry.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 17 | 67 contacts → | ||||
Exact match “Welcome to Vibrant Screen - Count on us for all your background verification needs.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 18 | 66 contacts → | ||||
Exact match “SI helps clients manage their risk with background reports for employment screening, business transactions, and client acceptance.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 19 | 65 contacts → | ||||
Exact match “ITGS is a global risk intelligence and business assurance company dedicated to helping organizations make informed, confident, and compliant decisions.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 20 | 62 contacts → | ||||
Exact match “Live investigator-led analysis is the best way to minimize regulatory, reputational and financial risks.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 21 | 58 contacts → | ||||
Exact match “Due Diligence AI that runs comprehensive financial, legal, regulatory and reputational risk analysis on any given target.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 22 | 57 contacts → | ||||
Exact match “Go Beyond Traditional Background Screening and Investigative Services: TruView is the nexus where the most modern technologies meet expert human analysis to achieve client success.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 23 | 54 contacts → | ||||
Exact match “Founded in October 2003, Alea Consulting supports clients with focused governance, compliance, integrity due diligence, and corporate intelligence.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 24 | 51 contacts → | ||||
Exact match “MASRI, originally established in 1950, is the oldest established, largest, and leading firm in the MENA and GCC in the field of due diligence, background checks, commercial…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 25 | 51 contacts → | ||||
Exact match “Established in 2007 and headquartered in Singapore, Back Check Group is a global provider of integrity, reputation and compliance management services, due diligence background…” 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 “due diligence investigation firms”. 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 856 due diligence investigation firms worldwide
See the full list, filter by size, metro and specialty, and access 1,788 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Due diligence investigation firms worldwide at a glance
As of Sep 19, 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 due diligence investigation firms are linked below.
- What qualifies
- Company records worldwide whose business descriptions match “due diligence investigation firms” 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 1,788 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.
Due diligence investigation firms by location
3 lists · largest firstEvery Due diligence investigation firms list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
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 “due diligence investigation firms”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many due diligence investigation firms are there worldwide?
RevenueBase identified 856 company matches for due diligence investigation firms worldwide 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?
Icover Services tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which country has the most due diligence investigation firms?
The United States leads with 270 companies, followed by India (117) and the United Kingdom (46). Every due diligence investigation firms list by country and city is linked on this page.
Which city has the most due diligence investigation firms?
London leads with 27 company records, followed by New York (21) and Mumbai (12).
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 1,788 professional contacts with verified work emails tracked across these 856 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 856 due diligence investigation firms worldwide. Start with a free account, no credit card.
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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 due diligence investigation firms worldwide
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 856 matching company records for due diligence investigation firms worldwide, with 8,518 tracked contacts and 1,788 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 due diligence investigation firms 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 | Icover Servicesicover-services.com HQ: Paris, FranceReported employees: 201-500 | Paris, France | 201-500 | Exact match | 264 contacts → |
“iCOVER Group provides high-quality Third-Party Background Screening, Monitoring, and Due Diligence services.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | HQ: Noida, IndiaReported employees: 201-500 | Noida, India | 201-500 | Exact match | 195 contacts → |
“At IISERVZ, we're not just providing a service; we're delivering a solution.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  Neotasneotas.comHQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 159 contacts → |
“By leveraging cutting-edge technology and experienced analysts, Neotas are going beyond and setting new standards in Due Diligence, Staff Screening, and Compliance.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Information Discovery Services LLCinformationdiscovery.netHQ: Fort Worth, TX, United StatesReported employees: 51-200 | Fort Worth, TX, United States | 51-200 | Exact match | 146 contacts → |
“A federally qualified Small Business, IDS offers end to end investigative solutions tailored to meet the specific needs of our clients.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  PSApsagroup.comHQ: Washington, DC, United StatesReported employees: 51-200 | Washington, DC, United States | 51-200 | Exact match | 142 contacts → |
“PSA is a global due diligence and investigations firm headquartered in Washington, DC.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Corporate Research And Investigationscrigroup.com HQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 140 contacts → |
“Corporate Research and Investigations Limited is a global provider of investigative research, background screening and business due diligence services for the world’s leading…” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  FACTfact-uk.org.ukHQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 117 contacts → |
“FACT are at the forefront of investigative and intelligence services, recognised by organisations, law enforcement, and governments worldwide.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  Evaluationz India PVT LTDevaluationz.comHQ: Bengaluru, IndiaReported employees: 11-50 | Bengaluru, India | 11-50 | Exact match | 115 contacts → |
“Evaluationz India Pvt Ltd is a background Verification and Assessment firm.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Securitas Indiasecuritas.inHQ: Gurgaon, IndiaReported employees: 10001+ | Gurgaon, India | 10001+ | Exact match | 112 contacts → |
“Every decision carries a risk.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Background Check Internationalbcilimited.com HQ: Lagos, NigeriaReported employees: 51-200 | Lagos, Nigeria | 51-200 | Exact match | 108 contacts → |
“Africa's Leading Background Screening and Due Diligence Company, built on trust for people and enterprise.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  Alias Intelligencealiasintelligence.comHQ: Los Angeles, TX, United StatesReported employees: 51-200 | Los Angeles, TX, United States | 51-200 | Exact match | 107 contacts → |
“Alias Intelligence is a leading background investigations and due diligence company delivering the information and insights our clients need to grow and navigate their businesses.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | VERISveris-consulting.com HQ: Singapore, IndonesiaReported employees: 11-50 | Singapore, Indonesia | 11-50 | Exact match | 81 contacts → |
“VERIS is a professional background screening and due diligence company supporting organizations in making informed, risk-aware decisions.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Crystal Screening Services Private Limitedcrystalscreening.comHQ: Noida, IndiaReported employees: 201-500 | Noida, India | 201-500 | Exact match | 81 contacts → |
“Crystal Screening Services – Secure Your Workforce with Confidence In today’s fast-moving business environment, hiring the right people isn’t just important-it’s critical.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Blue Heron Research Partnersblueheronrp.com HQ: New York, NY, United StatesReported employees: 51-200 | New York, NY, United States | 51-200 | Exact match | 75 contacts → |
“Blue Heron Research Partners is an international leader in qualitative due diligence.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  Integrated Security Servicesintesecurity.comHQ: New York, NY, United StatesReported employees: 201-500 | New York, NY, United States | 201-500 | Exact match | 72 contacts → |
“Integrated Security Services, Inc.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Ashland Partners & Company LLPashlandpartners.comHQ: Medford, OR, United StatesReported employees: 11-50 | Medford, OR, United States | 11-50 | Exact match | 67 contacts → |
“Ashland Partners & Company LLP is a PCAOB registered, specialty CPA firm providing due diligence solutions to the investment management industry.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Vibrant Screen Pvt. LTDvibrantscreen.comHQ: Bengaluru, IndiaReported employees: 201-500 | Bengaluru, India | 201-500 | Exact match | 67 contacts → |
“Welcome to Vibrant Screen - Count on us for all your background verification needs.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Scherzer Internationalscherzer.comHQ: Los Angeles, CA, United StatesReported employees: 51-200 | Los Angeles, CA, United States | 51-200 | Exact match | 66 contacts → |
“SI helps clients manage their risk with background reports for employment screening, business transactions, and client acceptance.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | ITGSitgsglobal.com HQ: Dubai, United Arab EmiratesReported employees: 51-200 | Dubai, United Arab Emirates | 51-200 | Exact match | 65 contacts → |
“ITGS is a global risk intelligence and business assurance company dedicated to helping organizations make informed, confident, and compliant decisions.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  Kreller Groupkreller.comHQ: Cincinnati, OH, United StatesReported employees: 11-50 | Cincinnati, OH, United States | 11-50 | Exact match | 62 contacts → |
“Live investigator-led analysis is the best way to minimize regulatory, reputational and financial risks.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | signalx.aisignalx.ai HQ: Hyderabad, IndiaReported employees: 11-50 | Hyderabad, India | 11-50 | Exact match | 58 contacts → |
“Due Diligence AI that runs comprehensive financial, legal, regulatory and reputational risk analysis on any given target.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  Truview Bsi, LLCtruviewbsi.comHQ: Melville, NY, United StatesReported employees: 51-200 | Melville, NY, United States | 51-200 | Exact match | 57 contacts → |
“Go Beyond Traditional Background Screening and Investigative Services: TruView is the nexus where the most modern technologies meet expert human analysis to achieve client success.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  Alea Consultingalea.asiaHQ: Gurugram, IndiaReported employees: 51-200 | Gurugram, India | 51-200 | Exact match | 54 contacts → |
“Founded in October 2003, Alea Consulting supports clients with focused governance, compliance, integrity due diligence, and corporate intelligence.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | MASRImasri.co HQ: Sin El-fil, United StatesReported employees: 51-200 | Sin El-fil, United States | 51-200 | Exact match | 51 contacts → |
“MASRI, originally established in 1950, is the oldest established, largest, and leading firm in the MENA and GCC in the field of due diligence, background checks, commercial…” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Background Check Groupbackcheckgroup.com HQ: SingaporeReported employees: 201-500 | Singapore | 201-500 | Exact match | 51 contacts → |
“Established in 2007 and headquartered in Singapore, Back Check Group is a global provider of integrity, reputation and compliance management services, due diligence background…” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 856 company matches
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Due diligence investigation firms: dataset insights
September 19, 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
855 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.
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 856 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 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 ↗
Due diligence investigation firms by location
3 lists · largest firstEvery Due diligence investigation firms list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
Questions about this company list
What does Exact match mean for due diligence investigation firms?
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 due diligence investigation firms did RevenueBase find worldwide?
The saved snapshot records 856 matching company records, 8,518 tracked contacts and 1,788 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
Browse the directory
Cite this list
RevenueBase Data Team. Top 25 due diligence investigation firms worldwide. Snapshot: September 19, 2026. https://revenuebase.ai/companies/browse/due-diligence-investigation-firms.
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 due diligence investigation firms worldwide
RevenueBase records 856 matching company records for due diligence investigation firms worldwide, with 8,518 tracked contacts and 1,788 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 due diligence investigation firms 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 | Icover Servicesicover-services.com HQ: Paris, FranceReported employees: 201-500 | Paris, France | 201-500 | Exact match | 264 contacts → |
“iCOVER Group provides high-quality Third-Party Background Screening, Monitoring, and Due Diligence services.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | HQ: Noida, IndiaReported employees: 201-500 | Noida, India | 201-500 | Exact match | 195 contacts → |
“At IISERVZ, we're not just providing a service; we're delivering a solution.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Neotasneotas.com HQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 159 contacts → |
“By leveraging cutting-edge technology and experienced analysts, Neotas are going beyond and setting new standards in Due Diligence, Staff Screening, and Compliance.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Information Discovery Services LLCinformationdiscovery.net HQ: Fort Worth, TX, United StatesReported employees: 51-200 | Fort Worth, TX, United States | 51-200 | Exact match | 146 contacts → |
“A federally qualified Small Business, IDS offers end to end investigative solutions tailored to meet the specific needs of our clients.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | PSApsagroup.com HQ: Washington, DC, United StatesReported employees: 51-200 | Washington, DC, United States | 51-200 | Exact match | 142 contacts → |
“PSA is a global due diligence and investigations firm headquartered in Washington, DC.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Corporate Research And Investigationscrigroup.com HQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 140 contacts → |
“Corporate Research and Investigations Limited is a global provider of investigative research, background screening and business due diligence services for the world’s leading…” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | FACTfact-uk.org.uk HQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 117 contacts → |
“FACT are at the forefront of investigative and intelligence services, recognised by organisations, law enforcement, and governments worldwide.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Evaluationz India PVT LTDevaluationz.com HQ: Bengaluru, IndiaReported employees: 11-50 | Bengaluru, India | 11-50 | Exact match | 115 contacts → |
“Evaluationz India Pvt Ltd is a background Verification and Assessment firm.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Securitas Indiasecuritas.in HQ: Gurgaon, IndiaReported employees: 10001+ | Gurgaon, India | 10001+ | Exact match | 112 contacts → |
“Every decision carries a risk.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Background Check Internationalbcilimited.com HQ: Lagos, NigeriaReported employees: 51-200 | Lagos, Nigeria | 51-200 | Exact match | 108 contacts → |
“Africa's Leading Background Screening and Due Diligence Company, built on trust for people and enterprise.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Alias Intelligencealiasintelligence.com HQ: Los Angeles, TX, United StatesReported employees: 51-200 | Los Angeles, TX, United States | 51-200 | Exact match | 107 contacts → |
“Alias Intelligence is a leading background investigations and due diligence company delivering the information and insights our clients need to grow and navigate their businesses.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | VERISveris-consulting.com HQ: Singapore, IndonesiaReported employees: 11-50 | Singapore, Indonesia | 11-50 | Exact match | 81 contacts → |
“VERIS is a professional background screening and due diligence company supporting organizations in making informed, risk-aware decisions.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Crystal Screening Services Private Limitedcrystalscreening.com HQ: Noida, IndiaReported employees: 201-500 | Noida, India | 201-500 | Exact match | 81 contacts → |
“Crystal Screening Services – Secure Your Workforce with Confidence In today’s fast-moving business environment, hiring the right people isn’t just important-it’s critical.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Blue Heron Research Partnersblueheronrp.com HQ: New York, NY, United StatesReported employees: 51-200 | New York, NY, United States | 51-200 | Exact match | 75 contacts → |
“Blue Heron Research Partners is an international leader in qualitative due diligence.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Integrated Security Servicesintesecurity.com HQ: New York, NY, United StatesReported employees: 201-500 | New York, NY, United States | 201-500 | Exact match | 72 contacts → |
“Integrated Security Services, Inc.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Ashland Partners & Company LLPashlandpartners.com HQ: Medford, OR, United StatesReported employees: 11-50 | Medford, OR, United States | 11-50 | Exact match | 67 contacts → |
“Ashland Partners & Company LLP is a PCAOB registered, specialty CPA firm providing due diligence solutions to the investment management industry.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Vibrant Screen Pvt. LTDvibrantscreen.com HQ: Bengaluru, IndiaReported employees: 201-500 | Bengaluru, India | 201-500 | Exact match | 67 contacts → |
“Welcome to Vibrant Screen - Count on us for all your background verification needs.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Scherzer Internationalscherzer.com HQ: Los Angeles, CA, United StatesReported employees: 51-200 | Los Angeles, CA, United States | 51-200 | Exact match | 66 contacts → |
“SI helps clients manage their risk with background reports for employment screening, business transactions, and client acceptance.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | ITGSitgsglobal.com HQ: Dubai, United Arab EmiratesReported employees: 51-200 | Dubai, United Arab Emirates | 51-200 | Exact match | 65 contacts → |
“ITGS is a global risk intelligence and business assurance company dedicated to helping organizations make informed, confident, and compliant decisions.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Kreller Groupkreller.com HQ: Cincinnati, OH, United StatesReported employees: 11-50 | Cincinnati, OH, United States | 11-50 | Exact match | 62 contacts → |
“Live investigator-led analysis is the best way to minimize regulatory, reputational and financial risks.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | signalx.aisignalx.ai HQ: Hyderabad, IndiaReported employees: 11-50 | Hyderabad, India | 11-50 | Exact match | 58 contacts → |
“Due Diligence AI that runs comprehensive financial, legal, regulatory and reputational risk analysis on any given target.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Truview Bsi, LLCtruviewbsi.com HQ: Melville, NY, United StatesReported employees: 51-200 | Melville, NY, United States | 51-200 | Exact match | 57 contacts → |
“Go Beyond Traditional Background Screening and Investigative Services: TruView is the nexus where the most modern technologies meet expert human analysis to achieve client success.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Alea Consultingalea.asia HQ: Gurugram, IndiaReported employees: 51-200 | Gurugram, India | 51-200 | Exact match | 54 contacts → |
“Founded in October 2003, Alea Consulting supports clients with focused governance, compliance, integrity due diligence, and corporate intelligence.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | MASRImasri.co HQ: Sin El-fil, United StatesReported employees: 51-200 | Sin El-fil, United States | 51-200 | Exact match | 51 contacts → |
“MASRI, originally established in 1950, is the oldest established, largest, and leading firm in the MENA and GCC in the field of due diligence, background checks, commercial…” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Background Check Groupbackcheckgroup.com HQ: SingaporeReported employees: 201-500 | Singapore | 201-500 | Exact match | 51 contacts → |
“Established in 2007 and headquartered in Singapore, Back Check Group is a global provider of integrity, reputation and compliance management services, due diligence background…” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
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Due diligence investigation firms: dataset insights
September 19, 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
855 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.
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 856 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 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 ↗
Due diligence investigation firms by location
3 lists · largest firstEvery Due diligence investigation firms list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
Questions about this company list
What does Exact match mean for due diligence investigation firms?
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 due diligence investigation firms did RevenueBase find worldwide?
The saved snapshot records 856 matching company records, 8,518 tracked contacts and 1,788 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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Cite this list
RevenueBase Data Team. Top 25 due diligence investigation firms worldwide. Snapshot: September 19, 2026. https://revenuebase.ai/companies/browse/due-diligence-investigation-firms.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗