Company lists · Data refreshed September 2026
Top 23 Private investigation firms based in Australia
RevenueBase identified 89 company matches for private investigation firms associated with Australia as of September 2026 and tracks 503 professional contacts across them, including 176 with verified work emails. Sydney is the largest hub.
This list covers company matches for private investigation firms associated with Australia, 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.
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 23 largest private investigation firms based in Australia
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 83 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 | |||||
| 2 | 59 contacts → | ||||
Exact match “For decades, LKA Group has provided the highest level of service to all clients, from small business to multinational corporations and governments.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 3 | 39 contacts → | ||||
Exact match “Brooksight Investigations are one of the most respected investigation teams operating throughout Australia.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 4 | 38 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 · Sep 20, 2026 · View company records in RevenueBase | |||||
| 5 | 37 contacts → | ||||
Exact match “Quantumcorp provides a full range of investigation services to insurers, self-insurers, insurance lawyers, claims management companies, and large employers.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 6 | 29 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 · Sep 20, 2026 · View company records in RevenueBase | |||||
| 7 | 7 contacts → | ||||
Exact match “Asia Pacific Security Group (APSG) is a privately owned investigations and security firm providing specialised services to Government, corporate and private clients.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 8 | 7 contacts → | ||||
Exact match “CHS Investigations is an established corporate investigation company operating nationally with our head office in Victoria.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 9 | 5 contacts → | ||||
Exact match “Worksite are a diverse investigative team with extensive experience in private investigations, specialising across multiple areas including workers’ compensation claims, public…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 10 | 5 contacts → | ||||
Exact match “Our Criminal Screening Services combine the very best in investigative screening resources with specialised vetting processes and system security to limit the risk to your…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 11 | 4 contacts → | ||||
Exact match “Precise Investigation is a leading Private Investigation firm that has faithfully served Australian businesses, families and individuals for over 30 years.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 12 | 4 contacts → | ||||
Exact match “A Trusted Forensic Investigator Firm When you need proof beyond doubt, you can rely on Lyonswood Investigations and Forensics Group, a professional and government-licensed private…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 13 | 4 contacts → | ||||
Exact match “Nemesis Consultancy Group, founded in 2008, is an Australian-owned firm specialising in workplace and specialist investigations, surveillance, online investigations and hostile…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 14 | 3 contacts → | ||||
Exact match “Adelaide Security & Investigations (ASI) is a local business established in 2013.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 15 | 2 contacts → | ||||
Exact match “Ramsey Investigation Services is an investigation company operating out of Adelaide, Australia.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 16 | 2 contacts → | ||||
Exact match “Skip Tracing Australia delivers expert investigative services to law firms, liquidators, and corporate professionals across Australia.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 17 | 2 contacts → | ||||
Exact match “For discerning clients requiring comprehensive solutions, Acclivity Lexidra stands apart.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 18 | 2 contacts → | ||||
Exact match “Verifact Investigations specialises in commercial investigations.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 19 | 2 contacts → | ||||
Exact match “Modern but traditional; discreet but results driven;"creative" but legal.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 20 | 2 contacts → | ||||
Exact match “About Us Brosnans Investigation Services is a highly successful corporate investigations firm with more than 30 years experience.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 21 | 1 contacts → | ||||
Exact match “CPLM Investigations are known for getting the job done.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 22 | 1 contacts → | ||||
Exact match “Since 2011, Regional Queensland Investigations (formerly J&D Online Investigations) has provided discreet, thorough, and professional investigative services across Australia.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 23 | 1 contacts → | ||||
Exact match “The Find Group is a corporate investigations and security consultancy business, servicing the needs of both corporate and private clients.” Recorded in the RevenueBase company graph · Sep 20, 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 “private 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 23 of 89 private investigation firms based in Australia
See the full list, filter by size, metro and specialty, and access 176 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Private investigation firms based in Australia at a glance
As of Sep 20, 2026Companies by employee count
Email recency for this list is measured worldwide rather than for Australia, so it is reported there. Company counts and contact totals on this page are exact for Australia, over 89 companies.
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.
- What qualifies
- Company records associated with Australia whose business descriptions match “private 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. Where headquarters information is recorded, preview rows are also filtered to this page’s location. 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 176 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.
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 “private investigation firms”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many private investigation firms are there based in Australia?
RevenueBase identified 89 company matches for private investigation firms associated with Australia 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?
Risk & Security Management tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city has the most private investigation firms?
Sydney leads with 17 company records, followed by Melbourne (13) and Adelaide (4).
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 176 professional contacts with verified work emails tracked across these 89 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.
Ready to reach these companies? Verified emails and direct dials for all 89 private investigation firms based in Australia. 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
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Company intelligence · public preview
Top 23 private investigation firms based in Australia
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 89 matching company records for private investigation firms based in Australia, with 503 tracked contacts and 176 verified work emails.
This public preview shows 23 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 20, 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 23 private investigation firms based in Australia
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 | Risk & Security Managementrisksec.com.au HQ: Brisbane Cbd, AustraliaReported employees: 51-200 | Brisbane Cbd, Australia | 51-200 | Exact match | 83 contacts → |
“With a history dating back to 1979, Risk & Security Management is Australia’s leading provider of mercantile and investigation services.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  LKA Grouplkagroup.com.auHQ: Carlton, AustraliaReported employees: 51-200 | Carlton, Australia | 51-200 | Exact match | 59 contacts → |
“For decades, LKA Group has provided the highest level of service to all clients, from small business to multinational corporations and governments.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Brooksight Investigationsbrooksight.com.au HQ: Gold Coast, AustraliaReported employees: 51-200 | Gold Coast, Australia | 51-200 | Exact match | 39 contacts → |
“Brooksight Investigations are one of the most respected investigation teams operating throughout Australia.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Detective Services DSdetectiveservices.com.auHQ: South Melbourne, AustraliaReported employees: Not recorded | South Melbourne, Australia | Not recorded | Exact match | 38 contacts → |
“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 description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Quantumcorp Australiaquantumcorp.com.auHQ: Sydney, AustraliaReported employees: 51-200 | Sydney, Australia | 51-200 | Exact match | 37 contacts → |
“Quantumcorp provides a full range of investigation services to insurers, self-insurers, insurance lawyers, claims management companies, and large employers.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | The Surefact Groupsurefact.com.au HQ: Port Melbourne, AustraliaReported employees: 51-200 | Port Melbourne, Australia | 51-200 | Exact match | 29 contacts → |
“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 description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Asia Pacific Security Groupapsecurity.com.auHQ: Melbourne, AustraliaReported employees: 11-50 | Melbourne, Australia | 11-50 | Exact match | 7 contacts → |
“Asia Pacific Security Group (APSG) is a privately owned investigations and security firm providing specialised services to Government, corporate and private clients.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | CHS Investigationschsinvestigations.com HQ: Ringwood, AustraliaReported employees: 1-10 | Ringwood, Australia | 1-10 | Exact match | 7 contacts → |
“CHS Investigations is an established corporate investigation company operating nationally with our head office in Victoria.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Worksite Investigationsworksite.net.au HQ: Sydney, AustraliaReported employees: 11-50 | Sydney, Australia | 11-50 | Exact match | 5 contacts → |
“Worksite are a diverse investigative team with extensive experience in private investigations, specialising across multiple areas including workers’ compensation claims, public…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  AIS International Criminal Screening Groupaisintl.com.auHQ: Surfers Paradise, AustraliaReported employees: 11-50 | Surfers Paradise, Australia | 11-50 | Exact match | 5 contacts → |
“Our Criminal Screening Services combine the very best in investigative screening resources with specialised vetting processes and system security to limit the risk to your…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Precise Investigation Corporate Risk & Investigation Servicespreciseinvestigation.com HQ: Melbourne, AustraliaReported employees: 11-50 | Melbourne, Australia | 11-50 | Exact match | 4 contacts → |
“Precise Investigation is a leading Private Investigation firm that has faithfully served Australian businesses, families and individuals for over 30 years.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Lyonswood Investigations & Forensicsinvestigators.net.auHQ: Drummoyne, AustraliaReported employees: 1-10 | Drummoyne, Australia | 1-10 | Exact match | 4 contacts → |
“A Trusted Forensic Investigator Firm When you need proof beyond doubt, you can rely on Lyonswood Investigations and Forensics Group, a professional and government-licensed private…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Nemesis Consultancy Groupnemesisconsultancy.com.auHQ: Sydney, AustraliaReported employees: 1-10 | Sydney, Australia | 1-10 | Exact match | 4 contacts → |
“Nemesis Consultancy Group, founded in 2008, is an Australian-owned firm specialising in workplace and specialist investigations, surveillance, online investigations and hostile…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Adelaide Security & Investigationsasiservices.netHQ: Adelaide, AustraliaReported employees: 1-10 | Adelaide, Australia | 1-10 | Exact match | 3 contacts → |
“Adelaide Security & Investigations (ASI) is a local business established in 2013.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Ramsey Investigation Servicesramsey.com.au HQ: Adelaide, AustraliaReported employees: 11-50 | Adelaide, Australia | 11-50 | Exact match | 2 contacts → |
“Ramsey Investigation Services is an investigation company operating out of Adelaide, Australia.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Skiptracing Australia PTY LTDskiptracingaustralia.com HQ: Brisbane, AustraliaReported employees: 1-10 | Brisbane, Australia | 1-10 | Exact match | 2 contacts → |
“Skip Tracing Australia delivers expert investigative services to law firms, liquidators, and corporate professionals across Australia.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Acclivity Lexidraacclivity.com.auHQ: Sydney, AustraliaReported employees: 1-10 | Sydney, Australia | 1-10 | Exact match | 2 contacts → |
“For discerning clients requiring comprehensive solutions, Acclivity Lexidra stands apart.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Verifact Investigationsverifact.com.auHQ: Brisbane, AustraliaReported employees: 51-200 | Brisbane, Australia | 51-200 | Exact match | 2 contacts → |
“Verifact Investigations specialises in commercial investigations.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | In Depth Investigationsindepthinvestigations.com.au HQ: Perth, AustraliaReported employees: 11-50 | Perth, Australia | 11-50 | Exact match | 2 contacts → |
“Modern but traditional; discreet but results driven;"creative" but legal.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  Brosnans Investigation Servicesbrosnans.com.auHQ: East Sydney, AustraliaReported employees: 11-50 | East Sydney, Australia | 11-50 | Exact match | 2 contacts → |
“About Us Brosnans Investigation Services is a highly successful corporate investigations firm with more than 30 years experience.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  Cplm Investigationscplminvestigations.com.auHQ: Kew, AustraliaReported employees: 1-10 | Kew, Australia | 1-10 | Exact match | 1 contacts → |
“CPLM Investigations are known for getting the job done.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Regional Queensland Investigations PTY LTDrqinv.com.au HQ: Mackay, AustraliaReported employees: 1-10 | Mackay, Australia | 1-10 | Exact match | 1 contacts → |
“Since 2011, Regional Queensland Investigations (formerly J&D Online Investigations) has provided discreet, thorough, and professional investigative services across Australia.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | The Find Groupthefindgroup.com.au HQ: Melbourne, AustraliaReported employees: 1-10 | Melbourne, Australia | 1-10 | Exact match | 1 contacts → |
“The Find Group is a corporate investigations and security consultancy business, servicing the needs of both corporate and private clients.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 23 of 89 company matches
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Private investigation firms: dataset insights
September 20, 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
88 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 worldwide rather than for Australia, so it is reported there. Company counts and contact totals on this page are exact for Australia, over 89 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 20, 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 ↗
Questions about this company list
What does Exact match mean for private 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 private investigation firms did RevenueBase find based in Australia?
The saved snapshot records 89 matching company records, 503 tracked contacts and 176 verified emails. The public preview displays 23 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 20, 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
Private investigation firms by geography
- Private investigation firms based in Chicago, United States
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- Private investigation firms based in Miami, United States
- Private investigation firms based in New York, United States
- Private investigation firms based in Canada
- Private investigation firms based in Italy
- Private investigation firms based in the Netherlands
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Cite this list
RevenueBase Data Team. Top 23 private investigation firms based in Australia. Snapshot: September 20, 2026. https://revenuebase.ai/companies/private-investigation-firms/australia.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Private investigation firms based in Chicago, United States
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Company intelligence · public preview
Top 23 private investigation firms based in Australia
RevenueBase records 89 matching company records for private investigation firms based in Australia, with 503 tracked contacts and 176 verified work emails.
This public preview shows 23 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 20, 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 23 private investigation firms based in Australia
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 | Risk & Security Managementrisksec.com.au HQ: Brisbane Cbd, AustraliaReported employees: 51-200 | Brisbane Cbd, Australia | 51-200 | Exact match | 83 contacts → |
“With a history dating back to 1979, Risk & Security Management is Australia’s leading provider of mercantile and investigation services.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | LKA Grouplkagroup.com.au HQ: Carlton, AustraliaReported employees: 51-200 | Carlton, Australia | 51-200 | Exact match | 59 contacts → |
“For decades, LKA Group has provided the highest level of service to all clients, from small business to multinational corporations and governments.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Brooksight Investigationsbrooksight.com.au HQ: Gold Coast, AustraliaReported employees: 51-200 | Gold Coast, Australia | 51-200 | Exact match | 39 contacts → |
“Brooksight Investigations are one of the most respected investigation teams operating throughout Australia.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Detective Services DSdetectiveservices.com.au HQ: South Melbourne, AustraliaReported employees: Not recorded | South Melbourne, Australia | Not recorded | Exact match | 38 contacts → |
“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 description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Quantumcorp Australiaquantumcorp.com.au HQ: Sydney, AustraliaReported employees: 51-200 | Sydney, Australia | 51-200 | Exact match | 37 contacts → |
“Quantumcorp provides a full range of investigation services to insurers, self-insurers, insurance lawyers, claims management companies, and large employers.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | The Surefact Groupsurefact.com.au HQ: Port Melbourne, AustraliaReported employees: 51-200 | Port Melbourne, Australia | 51-200 | Exact match | 29 contacts → |
“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 description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Asia Pacific Security Groupapsecurity.com.au HQ: Melbourne, AustraliaReported employees: 11-50 | Melbourne, Australia | 11-50 | Exact match | 7 contacts → |
“Asia Pacific Security Group (APSG) is a privately owned investigations and security firm providing specialised services to Government, corporate and private clients.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | CHS Investigationschsinvestigations.com HQ: Ringwood, AustraliaReported employees: 1-10 | Ringwood, Australia | 1-10 | Exact match | 7 contacts → |
“CHS Investigations is an established corporate investigation company operating nationally with our head office in Victoria.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Worksite Investigationsworksite.net.au HQ: Sydney, AustraliaReported employees: 11-50 | Sydney, Australia | 11-50 | Exact match | 5 contacts → |
“Worksite are a diverse investigative team with extensive experience in private investigations, specialising across multiple areas including workers’ compensation claims, public…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | AIS International Criminal Screening Groupaisintl.com.au HQ: Surfers Paradise, AustraliaReported employees: 11-50 | Surfers Paradise, Australia | 11-50 | Exact match | 5 contacts → |
“Our Criminal Screening Services combine the very best in investigative screening resources with specialised vetting processes and system security to limit the risk to your…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Precise Investigation Corporate Risk & Investigation Servicespreciseinvestigation.com HQ: Melbourne, AustraliaReported employees: 11-50 | Melbourne, Australia | 11-50 | Exact match | 4 contacts → |
“Precise Investigation is a leading Private Investigation firm that has faithfully served Australian businesses, families and individuals for over 30 years.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Lyonswood Investigations & Forensicsinvestigators.net.au HQ: Drummoyne, AustraliaReported employees: 1-10 | Drummoyne, Australia | 1-10 | Exact match | 4 contacts → |
“A Trusted Forensic Investigator Firm When you need proof beyond doubt, you can rely on Lyonswood Investigations and Forensics Group, a professional and government-licensed private…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Nemesis Consultancy Groupnemesisconsultancy.com.au HQ: Sydney, AustraliaReported employees: 1-10 | Sydney, Australia | 1-10 | Exact match | 4 contacts → |
“Nemesis Consultancy Group, founded in 2008, is an Australian-owned firm specialising in workplace and specialist investigations, surveillance, online investigations and hostile…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Adelaide Security & Investigationsasiservices.net HQ: Adelaide, AustraliaReported employees: 1-10 | Adelaide, Australia | 1-10 | Exact match | 3 contacts → |
“Adelaide Security & Investigations (ASI) is a local business established in 2013.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Ramsey Investigation Servicesramsey.com.au HQ: Adelaide, AustraliaReported employees: 11-50 | Adelaide, Australia | 11-50 | Exact match | 2 contacts → |
“Ramsey Investigation Services is an investigation company operating out of Adelaide, Australia.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Skiptracing Australia PTY LTDskiptracingaustralia.com HQ: Brisbane, AustraliaReported employees: 1-10 | Brisbane, Australia | 1-10 | Exact match | 2 contacts → |
“Skip Tracing Australia delivers expert investigative services to law firms, liquidators, and corporate professionals across Australia.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Acclivity Lexidraacclivity.com.au HQ: Sydney, AustraliaReported employees: 1-10 | Sydney, Australia | 1-10 | Exact match | 2 contacts → |
“For discerning clients requiring comprehensive solutions, Acclivity Lexidra stands apart.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Verifact Investigationsverifact.com.au HQ: Brisbane, AustraliaReported employees: 51-200 | Brisbane, Australia | 51-200 | Exact match | 2 contacts → |
“Verifact Investigations specialises in commercial investigations.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | In Depth Investigationsindepthinvestigations.com.au HQ: Perth, AustraliaReported employees: 11-50 | Perth, Australia | 11-50 | Exact match | 2 contacts → |
“Modern but traditional; discreet but results driven;"creative" but legal.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Brosnans Investigation Servicesbrosnans.com.au HQ: East Sydney, AustraliaReported employees: 11-50 | East Sydney, Australia | 11-50 | Exact match | 2 contacts → |
“About Us Brosnans Investigation Services is a highly successful corporate investigations firm with more than 30 years experience.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Cplm Investigationscplminvestigations.com.au HQ: Kew, AustraliaReported employees: 1-10 | Kew, Australia | 1-10 | Exact match | 1 contacts → |
“CPLM Investigations are known for getting the job done.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Regional Queensland Investigations PTY LTDrqinv.com.au HQ: Mackay, AustraliaReported employees: 1-10 | Mackay, Australia | 1-10 | Exact match | 1 contacts → |
“Since 2011, Regional Queensland Investigations (formerly J&D Online Investigations) has provided discreet, thorough, and professional investigative services across Australia.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | The Find Groupthefindgroup.com.au HQ: Melbourne, AustraliaReported employees: 1-10 | Melbourne, Australia | 1-10 | Exact match | 1 contacts → |
“The Find Group is a corporate investigations and security consultancy business, servicing the needs of both corporate and private clients.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 23 of 89 company matches
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Private investigation firms: dataset insights
September 20, 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
88 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 worldwide rather than for Australia, so it is reported there. Company counts and contact totals on this page are exact for Australia, over 89 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 20, 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 ↗
Questions about this company list
What does Exact match mean for private 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 private investigation firms did RevenueBase find based in Australia?
The saved snapshot records 89 matching company records, 503 tracked contacts and 176 verified emails. The public preview displays 23 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 20, 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 23 private investigation firms based in Australia. Snapshot: September 20, 2026. https://revenuebase.ai/companies/private-investigation-firms/australia.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
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