Company lists · Data refreshed September 2026

Top 25 Legal investigation firms worldwide

RevenueBase identified 3,467 company matches for legal investigation firms worldwide as of September 2026 and tracks 19,836 professional contacts across them, including 5,147 with verified work emails. The United States is the largest market and New York the largest hub.

This list covers company matches for legal 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 20, 2026. Country and city lists for legal 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.

How to read this list RevenueBase SmartSearch · Exact Recorded Sep 20, 2026 How this list was built
3,467Companies
19,836Contacts tracked
5,147Verified emails
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The 25 largest legal investigation firms worldwide

Ranked by team size
Top 25 of 3,467 company matches for legal investigation firms worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 20, 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 Sep 20, 2026501-1,000518 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 · Sep 20, 2026 · View company records in RevenueBase
2Exact matchDavis, CA, United StatesHQ recorded Sep 20, 2026201-500327 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 · Sep 20, 2026 · View company records in RevenueBase
3Exact matchBroussard, LA, United StatesHQ recorded Sep 20, 2026501-1,000292 contacts →

Exact match

“HUB Enterprises is a national insurance defense investigative firm.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
4Exact matchIrvine, CA, United StatesHQ recorded Sep 20, 2026201-500214 contacts →

Exact match

“Frasco has hundreds of investigators and regional offices located throughout the country.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
5Exact matchKannapolis, NC, United StatesHQ recorded Sep 20, 2026201-500214 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
6Exact matchNew York, NY, United StatesHQ recorded Sep 20, 202651-200207 contacts →

Exact match

“With more than 60 years of experience, Labaton Keller Sucharow stands as a tenacious advocate for investors and consumers, having secured billions of dollars in landmark…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
7Exact matchCharlotte, NC, United StatesHQ recorded Sep 20, 20261,001-5,000203 contacts →

Exact match

“Alpine Intel is dedicated to innovation across the property, auto, liability, and workers' comp insurance fields-helping our customers reach peak performance throughout the policy…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
8Exact matchBirmingham, AL, United StatesHQ recorded Sep 20, 202651-200137 contacts →

Exact match

“Litigation, compliance and investigations: It's what we do, day in and day out.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
9Exact matchNew York, NY, United StatesHQ recorded Sep 20, 202651-200129 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 · Sep 20, 2026 · View company records in RevenueBase
10Exact matchNorth Haven, CT, United StatesHQ recorded Sep 20, 2026501-1,000119 contacts →

Exact match

“Knowledge is power" Whether you are an insurance company, TPA, insurance defense law firm, risk manager, private law firm, or corporation / business owner, we at Lemieux &…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
11Exact matchNew York, NY, United StatesHQ recorded Sep 20, 202651-200112 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
12Exact matchBangalore, IndiaHQ recorded Sep 20, 202611-50108 contacts →

Exact match

“We help Individuals and Organizations uncover the truth and resolve complex problems through reliable forensic investigations and expert advisory.””

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
13Exact matchPortland, OR, United StatesHQ recorded Sep 20, 202651-200105 contacts →

Exact match

“We offer end-to-end solutions for financial services firms and their counsel, providing support throughout the lifecycle of their legal matters.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
14Exact matchTroy, MI, United StatesHQ recorded Sep 20, 2026201-500104 contacts →

Exact match

“The Robison Group is an agency of professional investigators and support teams offering surveillance, SIU claims, business risk mitigation and comprehensive desktop investigation…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
15Exact matchUnited StatesHQ recorded Sep 20, 2026201-50094 contacts →

Exact match

“Why Becker & Company?”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
16Exact matchNew Orleans, LA, United StatesHQ recorded Sep 20, 202611-5087 contacts →

Exact match

“Mouledoux, Bland, Legrand & Brackett is a full-service defense firm with decades of experience handling claims.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
17Exact matchUnited StatesHQ recorded Sep 20, 202611-5087 contacts →

Exact match

“Corporate Surveillance”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
18Exact matchPark Ridge, IL, United StatesHQ recorded Sep 20, 2026201-50084 contacts →

Exact match

“Marshall Investigative Group, division of Sphere Investigations, is a recognized leader in fraud and corporate investigations with more than 30 years of experience across North…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
19Exact matchHuntington Beach, CA, United StatesHQ recorded Sep 20, 202651-20084 contacts →

Exact match

“Horsemen Investigations is a full service investigation company, specializing in investigating insurance fraud and in minimizing risk exposure.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
20Exact matchBrisbane Cbd, AustraliaHQ recorded Sep 20, 202651-20083 contacts →

Exact match

“With a history dating back to 1979, Risk & Security Management is Australia’s leading provider of mercantile and investigation services.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
21Exact matchNew York, NY, United StatesHQ recorded Sep 20, 2026201-50082 contacts →

Exact match

“AJ Squared Security, Inc.(AJ2), is a privately owned security organization founded in May 2003 and incorporated in November 2003.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
22Exact matchUnited, United StatesHQ recorded Sep 20, 202651-20079 contacts →

Exact match

“Founded in April 2013, McCoy Leavitt Laskey LLC is the merger of the practices of three of the nation’s top fire and explosion litigators – John McCoy, Laurence Leavitt and Brook…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
23Exact matchNew York, NY, United StatesHQ recorded Sep 20, 2026201-50072 contacts →

Exact match

“Integrated Security Services, Inc.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
24Exact matchMonaca, PA, United StatesHQ recorded Sep 20, 2026201-50069 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 · Sep 20, 2026 · View company records in RevenueBase
25Exact matchWoburn, MA, United StatesHQ recorded Sep 20, 2026201-50067 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 · Sep 20, 2026 · View company records in RevenueBase

Showing 25 of 3,467 legal investigation firms worldwide

See the full list, filter by size, metro and specialty, and access 5,147 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Legal investigation firms worldwide at a glance

As of Sep 20, 2026
25.9%Verified-email coverage
5.7Average contacts per company
1-10Median size (employees)
1.9%Largest-city concentration · New York
Sep 20, 2026Page data refreshed

Companies by employee count

1-10
2,465
11-50
759
51-200
171
201-500
41
501-1,000
8
1,001-5,000
2
10001+
4

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 legal investigation firms are linked below.
What qualifies
Company records worldwide whose business descriptions match “legal 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 5,147 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 20, 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.

Legal investigation firms by location

11 lists · largest first

Every Legal investigation firms list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

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 “legal investigation firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many legal investigation firms are there worldwide?

RevenueBase identified 3,467 company matches for legal 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?

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

Which country has the most legal investigation firms?

The United States leads with 1,869 companies, followed by Italy (152) and the United Kingdom (138). Every legal investigation firms list by country and city is linked on this page.

Which city has the most legal investigation firms?

New York leads with 67 company records, followed by London (46) and Houston (35).

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 5,147 professional contacts with verified work emails tracked across these 3,467 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 20, 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.