Company lists · Data refreshed November 2026

Top 25 Witness services worldwide

RevenueBase identified 695 company matches for witness services worldwide as of November 2026 and tracks 7,465 professional contacts across them, including 2,699 with verified work emails. The United States is the largest market and London the largest hub.

This list covers company matches for witness 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 witness 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
695Companies
7,465Contacts tracked
2,699Verified emails
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The 25 largest witness services worldwide

Ranked by team size
Top 25 of 695 company matches for witness 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 matchBarcelona, SpainHQ recorded Nov 6, 2026201-500862 contacts →

Exact match

“Peritos Judiciales GP-GRUP, es un gabinete pericial especializado en la realización, gestión y tramitación de peritajes judiciales.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchPhiladelphia, PA, United StatesHQ recorded Nov 6, 2026501-1,000561 contacts →

Exact match

“Magna Legal Services provides end-to-end legal support services to law firms, corporations and governmental agencies throughout the nation.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchDallas, TX, United StatesHQ recorded Nov 6, 2026201-500407 contacts →

Exact match

“IMS Legal Strategies is a trusted partner to law firms and corporations worldwide, providing the expertise and technology needed to solve complex challenges and position disputes…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchNew York, NY, United StatesHQ recorded Nov 6, 2026201-500338 contacts →

Exact match

“Expert Institute is the legal industry’s leading expert witness platform, connecting attorneys with the world’s most qualified experts across all disciplines.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchLos Angeles, CA, United StatesHQ recorded Nov 6, 2026201-500262 contacts →

Exact match

“Founded in 1998, Resolution Economics provides sophisticated economic, statistical, and financial analyses, forensic investigations, forensic technology, dispute advisory, expert…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchHouston, TX, United StatesHQ recorded Nov 6, 2026201-500206 contacts →

Exact match

“Founded in 1985, the Marker Group is the nation’s most trusted name in record collection, medical review, data analysis, and many other litigation support services.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchLancaster, NJ, United StatesHQ recorded Nov 6, 202651-200192 contacts →

Exact match

“Robson Forensic is a national leader in expert witness consulting, providing technical expertise across many fields within engineering, architecture, and science, as well as an…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchUnited StatesHQ recorded Nov 6, 2026501-1,000146 contacts →

Exact match

“Esquire, an Alexander Gallo Holdings Company, offers a service area for each stage of litigation - staffed with specialists dedicated to their field.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchLos Angeles, CA, United StatesHQ recorded Nov 6, 202611-50119 contacts →

Exact match

“Court Appearance Professionals is the leading provider of attorneys for court appearances nationwide.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchAbington, PA, United StatesHQ recorded Nov 6, 202611-5071 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchSydney, AustraliaHQ recorded Nov 6, 202611-5064 contacts →

Exact match

“The leading provider of highly specialised expert witnesses.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchSherman Oaks, CA, United StatesHQ recorded Nov 6, 202651-20062 contacts →

Exact match

“Forensic accounting, economic damages, valuation and fraud expert witnesses for commercial and personal injury litigation matters and marital dissolution.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchWilmington, DE, United StatesHQ recorded Nov 6, 202651-20055 contacts →

Exact match

“The backbone of the legal industry since 1980, Parcels is the full-service solution for all your outsourced legal needs.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchLos Angeles, CA, United StatesHQ recorded Nov 6, 202651-20053 contacts →

Exact match

“Serving law firms, corporate counsel, and the entertainment industry since 1972.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchNewtown Square, PA, United StatesHQ recorded Nov 6, 202611-5049 contacts →

Exact match

“Versed identifies expert witnesses tailored to your case’s needs.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchIrving, TX, United StatesHQ recorded Nov 6, 202651-20048 contacts →

Exact match

“Courtroom Sciences, Inc.® (CSI®) partners with corporate legal departments and law firms throughout the entire litigation lifecycle - from the moment a crisis occurs through…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchParsippany, NJ, United StatesHQ recorded Nov 6, 202611-5043 contacts →

Exact match

“At National Forensic Consultants, Inc.®, we specialize in multi-disciplinary forensic investigation, offering comprehensive services to the legal, insurance, product…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchAlexandria, NY, United StatesHQ recorded Nov 6, 202611-5041 contacts →

Exact match

“The LitCon Group was formed in 2005, when some senior litigation professionals at a large consulting firm decided to form their own boutique litigation support firm.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchSheffield, United KingdomHQ recorded Nov 6, 202611-5041 contacts →

Exact match

“Medical & Legal Admin Services (MLAS) works alongside new and established Expert Witnesses to grow their practice and offer efficiency gains through effective administrative…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchPasadena, CA, United StatesHQ recorded Nov 6, 202611-5041 contacts →

Exact match

“ForensisGroup has over three decades of experience working with the nation's top law firms, insurance agencies, and many other industries.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchSan Antonio, TX, United StatesHQ recorded Nov 6, 202611-5037 contacts →

Exact match

“Texas Medical Legal Consultants (TxMLC) facilitates the relationship between consulting/testifying medical experts and insurance carriers, law firms, and in-house counsel for…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchMadrid, SpainHQ recorded Nov 6, 202611-5036 contacts →

Exact match

“PROMEDE, compañía referencia en peritaciones médicas, nació con el objetivo de poner a disposición de la pericia médica la actuación conjunta de expertos en los aspectos legales…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchBoston, MA, United StatesHQ recorded Nov 6, 202611-5033 contacts →

Exact match

“Rubin Anders is a premier expert search firm.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchWilton, CT, United StatesHQ recorded Nov 6, 2026n/a33 contacts →

Exact match

“Mednick Associates is a full service consortium of leading medical experts and specialists who advise attorneys on legal matters.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchKaty, TX, United StatesHQ recorded Nov 6, 202651-20033 contacts →

Exact match

“Strategic Litigation Partners is a full service litigation support firm.”

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

Showing 25 of 695 witness services worldwide

See the full list, filter by size, metro and specialty, and access 2,699 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Witness services worldwide at a glance

As of Nov 6, 2026
36.2%Verified-email coverage
10.7Average contacts per company
1-10Median size (employees)
3.2%Largest-city concentration · London
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
511
11-50
134
51-200
32
201-500
7
501-1,000
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 witness services are linked below.
What qualifies
Company records worldwide whose business descriptions match “witness 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 2,699 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.

Witness services by location

2 lists · largest first

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

How many witness services are there worldwide?

RevenueBase identified 695 company matches for witness 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?

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

Which country has the most witness services?

The United States leads with 427 companies, followed by the United Kingdom (62). Every witness services list by country and city is linked on this page.

Which city has the most witness services?

London leads with 22 company records, followed by New York (17) and Houston (13).

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 2,699 professional contacts with verified work emails tracked across these 695 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.