Company lists · Data refreshed November 2026

Top 25 Infidelity investigation services worldwide

RevenueBase identified 2,356 company matches for infidelity investigation services worldwide as of November 2026 and tracks 10,005 professional contacts across them, including 1,731 with verified work emails. The United States is the largest market and London the largest hub.

This list covers company matches for infidelity investigation 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 infidelity investigation 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.

How to read this list RevenueBase SmartSearch · Exact Recorded Nov 6, 2026 How this list was built
2,356Companies
10,005Contacts tracked
1,731Verified emails
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The 25 largest infidelity investigation services worldwide

Ranked by team size
Top 25 of 2,356 company matches for infidelity investigation services worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchJacksonville, FL, United StatesHQ recorded Nov 6, 2026501-1,000377 contacts →

Exact match

“CoventBridge Group is the leading worldwide full service investigation solutions company providing: Surveillance, SIU and Compliance, Claims Investigation, Counter-Fraud Programs…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchDavis, CA, United StatesHQ recorded Nov 6, 2026201-500359 contacts →

Exact match

“DigiStream Investigations is a full-service private investigation firm specializing in insurance defense and legal support services.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchKannapolis, WA, United StatesHQ recorded Nov 6, 2026201-500225 contacts →

Exact match

“Advantage Investigations is a nationwide leader in the industry for investigative services.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchNew York, NY, United StatesHQ recorded Nov 6, 202651-200130 contacts →

Exact match

“Beau Dietl & Associates is a premier private investigation firm based in New York City with offices in New Jersey, Florida, and California.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchUnited StatesHQ recorded Nov 6, 2026201-500104 contacts →

Exact match

“Why Becker & Company?”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchNew York, FL, United StatesHQ recorded Nov 6, 2026201-50075 contacts →

Exact match

“Integrated Security Services, Inc.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchMonaca, PA, United StatesHQ recorded Nov 6, 2026201-50073 contacts →

Exact match

“CSI is a full-service investigative firm that delivers key facts to give our clients an actionable advantage in a wide range of situations.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchWoburn, MA, United StatesHQ recorded Nov 6, 2026201-50066 contacts →

Exact match

“Claims Bureau USA has been providing Insurers, TPA's and their defense counsel with quality, in-depth investigative services since 1956.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchRome, ItalyHQ recorded Nov 6, 2026201-50061 contacts →

Exact match

“Global Investigation Service operates on the whole national territory in accordance with the Law 134 T.U.L.P.S.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchMontréal-nord, CanadaHQ recorded Nov 6, 202651-20055 contacts →

Exact match

“SIRCO offers efficient investigative methods to counter: Theft, Fraud, Collusion with Suppliers, Drug Trafficking, Threats, Trademarks Piracy, Labour Disputes, Harassment…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchDurban, South AfricaHQ recorded Nov 6, 202611-5052 contacts →

Exact match

“Justicia Investigations provides a range of professional investigative services including: Forensic investigations | Facts and truth discovery and verification (credential…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchNew Bedford, NY, United StatesHQ recorded Nov 6, 202611-5050 contacts →

Exact match

“Established in 1981, Data Quest, Ltd.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchLancaster, PA, United StatesHQ recorded Nov 6, 202651-20049 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchTustin, CA, United StatesHQ recorded Nov 6, 202651-20046 contacts →

Exact match

“Established in 1987, RJN Investigations, Inc.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchTemecula, CA, United StatesHQ recorded Nov 6, 202651-20045 contacts →

Exact match

“Hodson P.I.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchWaterloo, MB, CanadaHQ recorded Nov 6, 202651-20044 contacts →

Exact match

“Larrek Investigations has been in operation since April 30, 1980, with our current ownership having been in place since October 31, 2008.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchGold Coast, AustraliaHQ recorded Nov 6, 202651-20041 contacts →

Exact match

“Brooksight Investigations are one of the most respected investigation teams operating throughout Australia.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchSouth Melbourne, AustraliaHQ recorded Nov 6, 2026n/a38 contacts →

Exact match

“Detective Services (DS) owned & operated by e Mark Grover in Melbourne, one of Australia's most sought after successful private investigators, having worked in the investigation &…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchMedford, NJ, United StatesHQ recorded Nov 6, 202651-20036 contacts →

Exact match

“AIC Companies is the premier investigative firm in the industry with a unique and innovative collection of investigative services including Same Day Surveillance, S.M.A.R.T.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchMississauga, ON, CanadaHQ recorded Nov 6, 202651-20035 contacts →

Exact match

“Aberdeen Investigation Inc.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchCheadle Hulme, United KingdomHQ recorded Nov 6, 202651-20032 contacts →

Exact match

“RGI Solutions - Solving the Toughest Cases with Precision and Expertise Welcome to RGI Solutions, the leading independent investigations company in the UK!”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchUnited KingdomHQ recorded Nov 6, 202651-20032 contacts →

Exact match

“Brownsword Group, incorporating Mike India 5, provide professional investigation, surveillance and counter surveillance services to the Insurance and Corporate sectors.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchPhoenix, IL, United StatesHQ recorded Nov 6, 202611-5030 contacts →

Exact match

“Subrosa is a full-service private investigative firm, providing customized services ranging from thorough background checks, to undercover surveillance, to corporate due diligence…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchPort Melbourne, AustraliaHQ recorded Nov 6, 202651-20029 contacts →

Exact match

“The SureFact Group P/L is a privately owned Investigation’s Company providing tailored solutions to Insurance Companies, Large Corporate Organisations, Small to Medium Employers…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchUnited StatesHQ recorded Nov 6, 202651-20028 contacts →

Exact match

“At PSPIgroup we have an experienced staff of licensed private investigators and insurance adjusters, consisting of both male & female operatives.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 2,356 infidelity investigation services worldwide

See the full list, filter by size, metro and specialty, and access 1,731 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Infidelity investigation services worldwide at a glance

As of Nov 6, 2026
17.3%Verified-email coverage
4.2Average contacts per company
1-10Median size (employees)
1.9%Largest-city concentration · London
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
1,692
11-50
460
51-200
124
201-500
34
501-1,000
7
1,001-5,000
1
10001+
3

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 infidelity investigation services are linked below.
What qualifies
Company records worldwide whose business descriptions match “infidelity investigation 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 1,731 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.

Infidelity investigation services by location

4 lists · largest first

Every Infidelity investigation services 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 “infidelity investigation services”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many infidelity investigation services are there worldwide?

RevenueBase identified 2,356 company matches for infidelity investigation 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?

Coventbridge Group tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most infidelity investigation services?

The United States leads with 1,092 companies, followed by the United Kingdom (139) and Canada (80). Every infidelity investigation services list by country and city is linked on this page.

Which city has the most infidelity investigation services?

London leads with 44 company records, followed by Rome (25) and Madrid (22).

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 1,731 professional contacts with verified work emails tracked across these 2,356 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.

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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.