Company lists · Data refreshed September 2026

Top 25 Investigative agencies based in Canada

Name: Investigative agencies based in Canada
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 124 companies tracked

RevenueBase identified 124 investigative agencies headquartered in Canada as of September 2026 and tracks 904 professional contacts across them, including 182 with verified work emails. Toronto is the largest hub.

This list covers investigative agencies headquartered in Canada, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 20, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 20, 2026 86% judged on-target in blind review

124Companies

904Contacts tracked

182Verified emails

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The 25 largest investigative agencies based in Canada

Ranked by team size

Top 25 of 124 investigative agencies based in Canada, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to investigative agencies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Ultimate Security Services INC	Indirect evidence	York, ON, CanadaHQ checked Sep 20, 2026	201-500	64 contacts →
	Indirect evidence “Our highly organized, hard-working and intelligent office staff are here to ensure you receive the best possible service.” Source: RevenueBase Database · checked Sep 20, 2026
2	SIRCO	Strong evidence	Montréal-nord, CanadaHQ checked Sep 20, 2026	51-200	53 contacts →
	Strong evidence “SIRCO offers efficient investigative methods to counter: Theft, Fraud, Collusion with Suppliers, Drug Trafficking, Threats, Trademarks Piracy, Labour Disputes, Harassment…” Source: RevenueBase Database · checked Sep 20, 2026
3	Larrek Investigations	Strong evidence	Waterloo, ON, CanadaHQ checked Sep 20, 2026	51-200	45 contacts →
	Strong evidence “Larrek Investigations has been in operation since April 30, 1980, with our current ownership having been in place since October 31, 2008.” Source: RevenueBase Database · checked Sep 20, 2026
4	Skanna Security & Investigations	Strong evidence	Toronto, ON, CanadaHQ checked Sep 20, 2026	201-500	44 contacts →
	Strong evidence “Welcome to Skanna Security & Investigations The SKANNA ADVANTAGE … our company standards All Skanna Investigators and Security Guards are licensed by the Government of Ontario…” Source: RevenueBase Database · checked Sep 20, 2026
5	The Independent Investigations Office Of BC	Strong evidence	Surrey, BC, CanadaHQ checked Sep 20, 2026	11-50	35 contacts →
	Strong evidence “The Independent Investigations Office of BC (IIO) is mandated to conduct investigations into police-related incidents of death or serious harm in order to determine whether or not…” Source: RevenueBase Database · checked Sep 20, 2026
6	OBN Security & Investigative Consultants	Strong evidence	Toronto, ON, CanadaHQ checked Sep 20, 2026	51-200	33 contacts →
	Strong evidence “Full service security and investigative services firm operating out of head office in Toronto, Ontario.” Source: RevenueBase Database · checked Sep 20, 2026
7	Groupe Trak	Indirect evidence	Saint-Hubert, QC, CanadaHQ checked Sep 20, 2026	51-200	33 contacts →
	Indirect evidence “Groupe Trak est une firme spécialisée dans le secteur de la sécurité corporative qui offre une gamme complète de services professionnels et personnalisés : SERVICES RH…” Source: RevenueBase Database · checked Sep 20, 2026
8	Aberdeen Investigations INC	Strong evidence	Mississauga, ON, CanadaHQ checked Sep 20, 2026	51-200	27 contacts →
	Strong evidence “Aberdeen Investigation Inc.” Source: RevenueBase Database · checked Sep 20, 2026
9	King International Advisory Group	Strong evidence	Toronto, ON, CanadaHQ checked Sep 20, 2026	11-50	22 contacts →
	Strong evidence “Investigations \| Intelligence \| Enterprise Risk Management King International Advisory Group is an Investigation & Enterprise Risk Management agency committed to assisting…” Source: RevenueBase Database · checked Sep 20, 2026
10	Profile Group Of Companies	Strong evidence	Toronto, ON, CanadaHQ checked Sep 20, 2026	51-200	16 contacts →
	Strong evidence “Corporate Investigations.” Source: RevenueBase Database · checked Sep 20, 2026
11	Military Police Complaints Commission Of Canada Commission D'examen DES Plaintes Concernant LA Police Militaire DU Canada	Indirect evidence	Ottawa, ON, CanadaHQ checked Sep 20, 2026	11-50	12 contacts →
	Indirect evidence “English follows \| Le français suit : The Military Police Complaints Commission of Canada (MPCC) is an independent civilian oversight body that reviews and investigates complaints…” Source: RevenueBase Database · checked Sep 20, 2026
12	Reed Research Investigations	Strong evidence	Markham, ON, CanadaHQ checked Sep 20, 2026	11-50	12 contacts →
	Strong evidence “Reed Research is your powerful partner in Insurance, Corporate and Legal Investigations.” Source: RevenueBase Database · checked Sep 20, 2026
13	Integrity Investigative Solutions Limited	Strong evidence	Trenton, ON, CanadaHQ checked Sep 20, 2026	11-50	12 contacts →
	Strong evidence “Integrity Investigative Solutions Limited is a full-service Private Investigation and Security Service agency that provides a wide range of professional investigative services to…” Source: RevenueBase Database · checked Sep 20, 2026
14	Office Of The Public Sector Integrity Commissioner Of Canada	Indirect evidence	Ottawa, ON, CanadaHQ checked Sep 20, 2026	11-50	11 contacts →
	Indirect evidence “The Office of the Public Sector Integrity Commissioner of Canada investigates wrongdoing in the federal public sector and helps protect from reprisal whistleblowers and those who…” Source: RevenueBase Database · checked Sep 20, 2026
15	Mitchell Partners Investigation Services	Strong evidence	Barrie, ON, CanadaHQ checked Sep 20, 2026	11-50	10 contacts →
	Strong evidence “Mitchell Partners Investigation Services is a full-service private investigation and consulting firm based in Toronto, Canada.” Source: RevenueBase Database · checked Sep 20, 2026
16	VIP Investigations INC	Strong evidence	Montreal, QC, CanadaHQ checked Sep 20, 2026	1-10	10 contacts →
	Strong evidence “Civil and criminal Investigations.” Source: RevenueBase Database · checked Sep 20, 2026
17	CPA International Investigations INC	Indirect evidence	Langley, BC, CanadaHQ checked Sep 20, 2026	1-10	8 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 20, 2026
18	Diligence Investigation Canada	Strong evidence	Montréal, QC, CanadaHQ checked Sep 20, 2026	1-10	7 contacts →
	Strong evidence “Diligence Investigation Canada est le fruit d’un parcours débuté il y a plus de 27 ans par Daniel Girard, un passionné du renseignement qui a d’abord fait ses armes dans le…” Source: RevenueBase Database · checked Sep 20, 2026
19	Whitehall Bureau Of Canada Limited	Strong evidence	Stoney Creek, ON, CanadaHQ checked Sep 20, 2026	1-10	7 contacts →
	Strong evidence “Full service investigation firm.” Source: RevenueBase Database · checked Sep 20, 2026
20	Groupe Securi-Check	Strong evidence	Montréal, QC, CanadaHQ checked Sep 20, 2026	11-50	6 contacts →
	Strong evidence “Securi-Check Group works in the field of investigation, pre-employment checks, pre-rental checks and fingerprinting.” Source: RevenueBase Database · checked Sep 20, 2026
21	Axis Vero Incorporated	Indirect evidence	Brampton, BC, CanadaHQ checked Sep 20, 2026	11-50	6 contacts →
	Indirect evidence “The “AXIS” of any object is at the center of its action; “Vero“ from the Latin “VERITAS” means truth.” Source: RevenueBase Database · checked Sep 20, 2026
22	Klatt Investigations	Strong evidence	Oakville, ON, CanadaHQ checked Sep 20, 2026	11-50	5 contacts →
	Strong evidence “Klatt Investigations is a top-tier Canadian private investigations firm with partnerships to the most highly regarded private investigation firms worldwide.” Source: RevenueBase Database · checked Sep 20, 2026
23	Inquisitive Intel	Indirect evidence	Ottawa, ON, CanadaHQ checked Sep 20, 2026	1-10	4 contacts →
	Indirect evidence “Inquisitive Intel is a full-service Private Intelligence and Cyber Security firm.” Source: RevenueBase Database · checked Sep 20, 2026
24	Chas & Associates	Strong evidence	Vancouver, BC, CanadaHQ checked Sep 20, 2026	11-50	4 contacts →
	Strong evidence “Chas & Associates is a boutique investigation firm based in Vancouver, British Columbia.” Source: RevenueBase Database · checked Sep 20, 2026
25	Specialty Risk & Intelligence Services Inc. Sris	Strong evidence	Toronto, ON, CanadaHQ checked Sep 20, 2026	1-10	3 contacts →
	Strong evidence “Specialty Risk & Intelligence Services Inc.(SRIS) is a multidisciplinary Intelligence, Investigation and Risk Consulting agency that was founded by a group of industry experts.” Source: RevenueBase Database · checked Sep 20, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: investigative agencies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names investigative agencies.
Partial evidence: Its own public description names part of investigative agencies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name investigative agencies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 124 investigative agencies based in Canada

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Investigative agencies based in Canada at a glance

As of Sep 20, 2026

20.1%Verified-email coverage

7.3Average contacts per company

11-50Median size (employees)

18.5%Largest-city concentration · Toronto

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

Email recency for this list is measured worldwide rather than for Canada, so it is reported there. Company counts and contact totals on this page are exact for Canada, over 124 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among investigative agencies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in Canada whose own description of what they do matches “investigative agencies”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names investigative agencies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among investigative agencies, and records with no verified work email. Companies headquartered outside Canada are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
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 listed company carries at least one verified work email, 182 across the full list. 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.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names investigative agencies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many investigative agencies are there based in Canada?

RevenueBase identified 124 investigative agencies headquartered in Canada as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Ultimate Security Services INC, headquartered in York, tops this list with the largest team on record.

Which city has the most investigative agencies?

Toronto leads with 23 headquartered companies, followed by Ottawa (11) and Montreal (7).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 182 verified decision-maker contacts tracked across these 124 companies.

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 Smart Search, 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.