Company lists · Data refreshed September 2026
Top 25 Private investigative firms based in the United Kingdom
RevenueBase identified 179 company matches for private investigative firms associated with the United Kingdom as of September 2026 and tracks 687 professional contacts across them, including 119 with verified work emails. London is the largest hub.
This list covers company matches for private investigative firms associated with the United Kingdom, 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 25 largest private investigative firms based in the United Kingdom
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 51 contacts → | ||||
Exact match “ExamWorks Investigation Services is a leading claims investigation company providing the insurance, banking, retail and other sectors with a range of innovative and cost effective…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 2 | 36 contacts → | ||||
Exact match “Harod Associates delivers global investigation and security solutions to complex crime and risk issues.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 3 | 30 contacts → | ||||
Exact match “RGI Solutions - Solving the Toughest Cases with Precision and Expertise Welcome to RGI Solutions, the leading independent investigations company in the UK!” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 4 | 21 contacts → | ||||
Exact match “Conflict International is a London based private detective agency that offers private Investigation & Intelligence services across the UK, as well as in Europe and across the…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 5 | 20 contacts → | ||||
Exact match “Tremark Associates Ltd is an experienced, knowledgeable, high-quality professional investigation business that delivers a reputable, proven service to clients across the UK and…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 6 | 18 contacts → | ||||
Exact match “Diligence is a private investigations firm, the output of our investigations help our clients make informed decisions bridging the gap between what they know and what they need to…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 7 | 9 contacts → | ||||
Exact match “Silverbridge is an independent investigations and intelligence firm offering a full range of information gathering services.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 8 | 7 contacts → | ||||
Exact match “IntraOrbis was founded in 2004 and quickly established itself within the Brand Protection sector as an international solution provider.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 9 | 7 contacts → | ||||
Exact match “We are a leading international investigation and discovery company with five UK offices and a network of agents worldwide.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 10 | 6 contacts → | ||||
Exact match “Priority International helps Private Investigators handle international matters as a trusted extension of their office.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 11 | 6 contacts → | ||||
Exact match “We are a Private Investigation company offering services nationwide and worldwide to both private and commercial clients.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 12 | 6 contacts → | ||||
Exact match “PEL Consultancy Services provides discreet investigation and intelligence support for private clients, legal professionals, businesses and family offices.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 13 | 6 contacts → | ||||
Exact match “Since incorporation in 2002, International Intelligence Limited has provided services world-wide in support of our Clients.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 14 | 4 contacts → | ||||
Exact match “WM Investigation will satisfy your private or commercial investigation requirement, we have the knowledge skills experience and professionalism to respond quickly and effectively…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 15 | 3 contacts → | ||||
Exact match “KPEA (UK) LTD tracing agency/process serving is a security and investigations company based out of PO Box 18132.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 16 | 2 contacts → | ||||
Exact match “Merlin Hunter, established in September 2023, quickly gained recognition within two years, notably at the London Business Show, for its innovative investigative approaches and…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 17 | 2 contacts → | ||||
Exact match “Over many years working in the private investigations industry we have established ourselves as a key player, using skill and experience we offer our clients a discrete service…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 18 | 2 contacts → | ||||
Exact match “Established in 1995, Howard Agency is an investigation agency based in London operating locally, nationally and internationally.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 19 | 1 contacts → | ||||
Exact match “Integrity is our watchword.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 20 | 1 contacts → | ||||
Exact match “Revive Asset thrive on providing our clients with a five star service.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 21 | 1 contacts → | ||||
Exact match “Our expertise and services are in the following areas – Family Law, International Child Abduction, Business Intelligence, Litigation Support, Surveillance, Process Serving and…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 22 | 1 contacts → | ||||
Exact match “NTF Investigations can provide all your legal, security and investigation services, whatever the task.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 23 | 1 contacts → | ||||
Exact match “Paul Read Consulting provides services relating to criminal and corporate Investigations and surveillance; fraud and financail crime-all aspects including; compliance; security…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 24 | 1 contacts → | ||||
Exact match “Proactive Investigations Ltd is an established Corporate Investigations Company managed by a Director with vast investigative and covert background, with over 30yrs experience as…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 25 | 1 contacts → | ||||
Exact match “Elicio Global is a private security firm that was founded by Geoff Beaumont.” 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 investigative 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 25 of 179 private investigative firms based in the United Kingdom
See the full list, filter by size, metro and specialty, and access 119 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Private investigative firms based in the United Kingdom at a glance
As of Sep 20, 2026Companies by employee count
Email recency for this list is measured worldwide rather than for United Kingdom, so it is reported there. Company counts and contact totals on this page are exact for United Kingdom, over 179 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 the United Kingdom whose business descriptions match “private investigative 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 119 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 investigative firms”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many private investigative firms are there based in the United Kingdom?
RevenueBase identified 179 company matches for private investigative firms associated with the United Kingdom 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?
Examworks Investigation Services tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city has the most private investigative firms?
London leads with 51 company records, followed by Birmingham (4) and Manchester (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 119 professional contacts with verified work emails tracked across these 179 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 179 private investigative firms based in the United Kingdom. Start with a free account, no credit card.
Download this list →Related lists
Private investigative firms by geography
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- Private investigative firms based in New York, United States
- Private investigative firms based in Australia
- Private investigative firms based in Canada
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- Private investigative firms based in the Netherlands
- Private investigative firms based in Spain
- Private investigative firms based in the United States
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
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Private investigative firms based in Houston, United States
- Private investigative firms based in Miami, United States
- Private investigative firms based in New York, United States
- Private investigative firms based in Australia
- Private investigative firms based in Canada
- Private investigative firms based in Italy
Company intelligence · public preview
Top 25 private investigative firms based in the United Kingdom
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 179 matching company records for private investigative firms based in the United Kingdom, with 687 tracked contacts and 119 verified work emails.
This public preview shows 25 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 25 private investigative firms based in the United Kingdom
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 |  Examworks Investigation Servicesexamworks-is.co.ukHQ: Bolton, United KingdomReported employees: 51-200 | Bolton, United Kingdom | 51-200 | Exact match | 51 contacts → |
“ExamWorks Investigation Services is a leading claims investigation company providing the insurance, banking, retail and other sectors with a range of innovative and cost effective…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  HARODharodassociates.comHQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 36 contacts → |
“Harod Associates delivers global investigation and security solutions to complex crime and risk issues.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  RGIrgisolutions.co.ukHQ: Cheadle Hulme, United KingdomReported employees: 51-200 | Cheadle Hulme, United Kingdom | 51-200 | Exact match | 30 contacts → |
“RGI Solutions - Solving the Toughest Cases with Precision and Expertise Welcome to RGI Solutions, the leading independent investigations company in the UK!” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Conflict Internationalconflictinternational.com HQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 21 contacts → |
“Conflict International is a London based private detective agency that offers private Investigation & Intelligence services across the UK, as well as in Europe and across the…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Tremark Associatestremark.co.uk HQ: Leeds, United KingdomReported employees: 11-50 | Leeds, United Kingdom | 11-50 | Exact match | 20 contacts → |
“Tremark Associates Ltd is an experienced, knowledgeable, high-quality professional investigation business that delivers a reputable, proven service to clients across the UK and…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Diligencediligence.com HQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 18 contacts → |
“Diligence is a private investigations firm, the output of our investigations help our clients make informed decisions bridging the gap between what they know and what they need to…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Silverbridgesilverbridgeintelligence.comHQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 9 contacts → |
“Silverbridge is an independent investigations and intelligence firm offering a full range of information gathering services.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Intraorbis Limitedintraorbis.co.uk HQ: Sudbury, United KingdomReported employees: 1-10 | Sudbury, United Kingdom | 1-10 | Exact match | 7 contacts → |
“IntraOrbis was founded in 2004 and quickly established itself within the Brand Protection sector as an international solution provider.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Sirs Europesirseurope.co.uk HQ: Isleworth, United KingdomReported employees: 11-50 | Isleworth, United Kingdom | 11-50 | Exact match | 7 contacts → |
“We are a leading international investigation and discovery company with five UK offices and a network of agents worldwide.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Priority Internationalpilimited.com HQ: Holywood, United KingdomReported employees: 1-10 | Holywood, United Kingdom | 1-10 | Exact match | 6 contacts → |
“Priority International helps Private Investigators handle international matters as a trusted extension of their office.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Taylor Investigations Limitedtaylorinvestigations.co.uk HQ: Norwich, United KingdomReported employees: 1-10 | Norwich, United Kingdom | 1-10 | Exact match | 6 contacts → |
“We are a Private Investigation company offering services nationwide and worldwide to both private and commercial clients.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | PEL Consultancy Servicespelconsultancyservices.co.uk HQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 6 contacts → |
“PEL Consultancy Services provides discreet investigation and intelligence support for private clients, legal professionals, businesses and family offices.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | International Intelligence Limitedinternational-intelligence.co.uk HQ: Gloucester, United KingdomReported employees: 11-50 | Gloucester, United Kingdom | 11-50 | Exact match | 6 contacts → |
“Since incorporation in 2002, International Intelligence Limited has provided services world-wide in support of our Clients.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Licence Bureau LTD & WM Investigation LTDinvestigation.co.uk HQ: Hemel Hempstead, United KingdomReported employees: 11-50 | Hemel Hempstead, United Kingdom | 11-50 | Exact match | 4 contacts → |
“WM Investigation will satisfy your private or commercial investigation requirement, we have the knowledge skills experience and professionalism to respond quickly and effectively…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | KPEAkeithparsons.co.uk HQ: Solihull, United KingdomReported employees: 1-10 | Solihull, United Kingdom | 1-10 | Exact match | 3 contacts → |
“KPEA (UK) LTD tracing agency/process serving is a security and investigations company based out of PO Box 18132.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Merlin Huntermerlinhunter.com HQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 2 contacts → |
“Merlin Hunter, established in September 2023, quickly gained recognition within two years, notably at the London Business Show, for its innovative investigative approaches and…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Revealpirevealpi.com HQ: Birmingham, United KingdomReported employees: 11-50 | Birmingham, United Kingdom | 11-50 | Exact match | 2 contacts → |
“Over many years working in the private investigations industry we have established ourselves as a key player, using skill and experience we offer our clients a discrete service…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Howard Agencyhowardagency.co.uk HQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 2 contacts → |
“Established in 1995, Howard Agency is an investigation agency based in London operating locally, nationally and internationally.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Specialised Investigation Services LTDspecialised-is.com HQ: Cheadle Hulme, United KingdomReported employees: 11-50 | Cheadle Hulme, United Kingdom | 11-50 | Exact match | 1 contacts → |
“Integrity is our watchword.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Revive Asset Limitedreviveasset.co.uk HQ: Halifax, United KingdomReported employees: 1-10 | Halifax, United Kingdom | 1-10 | Exact match | 1 contacts → |
“Revive Asset thrive on providing our clients with a five star service.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Ingram Associates UKingramassociates.co.uk HQ: Oxford Business Park, United KingdomReported employees: 1-10 | Oxford Business Park, United Kingdom | 1-10 | Exact match | 1 contacts → |
“Our expertise and services are in the following areas – Family Law, International Child Abduction, Business Intelligence, Litigation Support, Surveillance, Process Serving and…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | NTF Surveillance And Investigations LTDntfinvestigations.com HQ: Sunderland, United KingdomReported employees: 1-10 | Sunderland, United Kingdom | 1-10 | Exact match | 1 contacts → |
“NTF Investigations can provide all your legal, security and investigation services, whatever the task.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Paul Read Consulting Investigations LTDprcsecurity.com HQ: Reading, United KingdomReported employees: 1-10 | Reading, United Kingdom | 1-10 | Exact match | 1 contacts → |
“Paul Read Consulting provides services relating to criminal and corporate Investigations and surveillance; fraud and financail crime-all aspects including; compliance; security…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Proactive Investigations LTDproactiveinvestigations.co.uk HQ: Manchester, United KingdomReported employees: 1-10 | Manchester, United Kingdom | 1-10 | Exact match | 1 contacts → |
“Proactive Investigations Ltd is an established Corporate Investigations Company managed by a Director with vast investigative and covert background, with over 30yrs experience as…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Elicio Global Limitedelicioglobal.com HQ: Newcastle, United KingdomReported employees: 1-10 | Newcastle, United Kingdom | 1-10 | Exact match | 1 contacts → |
“Elicio Global is a private security firm that was founded by Geoff Beaumont.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 179 company matches
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Private investigative 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
175 records in the displayed employee bands.
4 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 United Kingdom, so it is reported there. Company counts and contact totals on this page are exact for United Kingdom, over 179 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 investigative 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 investigative firms did RevenueBase find based in the United Kingdom?
The saved snapshot records 179 matching company records, 687 tracked contacts and 119 verified emails. The public preview displays 25 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 investigative firms by geography
- Private investigative firms based in Houston, United States
- Private investigative firms based in Miami, United States
- Private investigative firms based in New York, United States
- Private investigative firms based in Australia
- Private investigative firms based in Canada
- Private investigative firms based in Italy
- Private investigative firms based in the Netherlands
- Private investigative firms based in Spain
- Private investigative firms based in the United States
Cite this list
RevenueBase Data Team. Top 25 private investigative firms based in the United Kingdom. Snapshot: September 20, 2026. https://revenuebase.ai/companies/private-investigative-firms/united-kingdom.
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 investigative firms based in Houston, United States
- Private investigative firms based in Miami, United States
- Private investigative firms based in New York, United States
- Private investigative firms based in Australia
- Private investigative firms based in Canada
- Private investigative firms based in Italy
Company intelligence · public preview
Top 25 private investigative firms based in the United Kingdom
RevenueBase records 179 matching company records for private investigative firms based in the United Kingdom, with 687 tracked contacts and 119 verified work emails.
This public preview shows 25 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 25 private investigative firms based in the United Kingdom
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 | Examworks Investigation Servicesexamworks-is.co.uk HQ: Bolton, United KingdomReported employees: 51-200 | Bolton, United Kingdom | 51-200 | Exact match | 51 contacts → |
“ExamWorks Investigation Services is a leading claims investigation company providing the insurance, banking, retail and other sectors with a range of innovative and cost effective…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | HARODharodassociates.com HQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 36 contacts → |
“Harod Associates delivers global investigation and security solutions to complex crime and risk issues.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | RGIrgisolutions.co.uk HQ: Cheadle Hulme, United KingdomReported employees: 51-200 | Cheadle Hulme, United Kingdom | 51-200 | Exact match | 30 contacts → |
“RGI Solutions - Solving the Toughest Cases with Precision and Expertise Welcome to RGI Solutions, the leading independent investigations company in the UK!” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Conflict Internationalconflictinternational.com HQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 21 contacts → |
“Conflict International is a London based private detective agency that offers private Investigation & Intelligence services across the UK, as well as in Europe and across the…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Tremark Associatestremark.co.uk HQ: Leeds, United KingdomReported employees: 11-50 | Leeds, United Kingdom | 11-50 | Exact match | 20 contacts → |
“Tremark Associates Ltd is an experienced, knowledgeable, high-quality professional investigation business that delivers a reputable, proven service to clients across the UK and…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Diligencediligence.com HQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 18 contacts → |
“Diligence is a private investigations firm, the output of our investigations help our clients make informed decisions bridging the gap between what they know and what they need to…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Silverbridgesilverbridgeintelligence.com HQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 9 contacts → |
“Silverbridge is an independent investigations and intelligence firm offering a full range of information gathering services.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Intraorbis Limitedintraorbis.co.uk HQ: Sudbury, United KingdomReported employees: 1-10 | Sudbury, United Kingdom | 1-10 | Exact match | 7 contacts → |
“IntraOrbis was founded in 2004 and quickly established itself within the Brand Protection sector as an international solution provider.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Sirs Europesirseurope.co.uk HQ: Isleworth, United KingdomReported employees: 11-50 | Isleworth, United Kingdom | 11-50 | Exact match | 7 contacts → |
“We are a leading international investigation and discovery company with five UK offices and a network of agents worldwide.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Priority Internationalpilimited.com HQ: Holywood, United KingdomReported employees: 1-10 | Holywood, United Kingdom | 1-10 | Exact match | 6 contacts → |
“Priority International helps Private Investigators handle international matters as a trusted extension of their office.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Taylor Investigations Limitedtaylorinvestigations.co.uk HQ: Norwich, United KingdomReported employees: 1-10 | Norwich, United Kingdom | 1-10 | Exact match | 6 contacts → |
“We are a Private Investigation company offering services nationwide and worldwide to both private and commercial clients.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | PEL Consultancy Servicespelconsultancyservices.co.uk HQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 6 contacts → |
“PEL Consultancy Services provides discreet investigation and intelligence support for private clients, legal professionals, businesses and family offices.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | International Intelligence Limitedinternational-intelligence.co.uk HQ: Gloucester, United KingdomReported employees: 11-50 | Gloucester, United Kingdom | 11-50 | Exact match | 6 contacts → |
“Since incorporation in 2002, International Intelligence Limited has provided services world-wide in support of our Clients.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Licence Bureau LTD & WM Investigation LTDinvestigation.co.uk HQ: Hemel Hempstead, United KingdomReported employees: 11-50 | Hemel Hempstead, United Kingdom | 11-50 | Exact match | 4 contacts → |
“WM Investigation will satisfy your private or commercial investigation requirement, we have the knowledge skills experience and professionalism to respond quickly and effectively…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | KPEAkeithparsons.co.uk HQ: Solihull, United KingdomReported employees: 1-10 | Solihull, United Kingdom | 1-10 | Exact match | 3 contacts → |
“KPEA (UK) LTD tracing agency/process serving is a security and investigations company based out of PO Box 18132.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Merlin Huntermerlinhunter.com HQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 2 contacts → |
“Merlin Hunter, established in September 2023, quickly gained recognition within two years, notably at the London Business Show, for its innovative investigative approaches and…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Revealpirevealpi.com HQ: Birmingham, United KingdomReported employees: 11-50 | Birmingham, United Kingdom | 11-50 | Exact match | 2 contacts → |
“Over many years working in the private investigations industry we have established ourselves as a key player, using skill and experience we offer our clients a discrete service…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Howard Agencyhowardagency.co.uk HQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 2 contacts → |
“Established in 1995, Howard Agency is an investigation agency based in London operating locally, nationally and internationally.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Specialised Investigation Services LTDspecialised-is.com HQ: Cheadle Hulme, United KingdomReported employees: 11-50 | Cheadle Hulme, United Kingdom | 11-50 | Exact match | 1 contacts → |
“Integrity is our watchword.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Revive Asset Limitedreviveasset.co.uk HQ: Halifax, United KingdomReported employees: 1-10 | Halifax, United Kingdom | 1-10 | Exact match | 1 contacts → |
“Revive Asset thrive on providing our clients with a five star service.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Ingram Associates UKingramassociates.co.uk HQ: Oxford Business Park, United KingdomReported employees: 1-10 | Oxford Business Park, United Kingdom | 1-10 | Exact match | 1 contacts → |
“Our expertise and services are in the following areas – Family Law, International Child Abduction, Business Intelligence, Litigation Support, Surveillance, Process Serving and…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | NTF Surveillance And Investigations LTDntfinvestigations.com HQ: Sunderland, United KingdomReported employees: 1-10 | Sunderland, United Kingdom | 1-10 | Exact match | 1 contacts → |
“NTF Investigations can provide all your legal, security and investigation services, whatever the task.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Paul Read Consulting Investigations LTDprcsecurity.com HQ: Reading, United KingdomReported employees: 1-10 | Reading, United Kingdom | 1-10 | Exact match | 1 contacts → |
“Paul Read Consulting provides services relating to criminal and corporate Investigations and surveillance; fraud and financail crime-all aspects including; compliance; security…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Proactive Investigations LTDproactiveinvestigations.co.uk HQ: Manchester, United KingdomReported employees: 1-10 | Manchester, United Kingdom | 1-10 | Exact match | 1 contacts → |
“Proactive Investigations Ltd is an established Corporate Investigations Company managed by a Director with vast investigative and covert background, with over 30yrs experience as…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Elicio Global Limitedelicioglobal.com HQ: Newcastle, United KingdomReported employees: 1-10 | Newcastle, United Kingdom | 1-10 | Exact match | 1 contacts → |
“Elicio Global is a private security firm that was founded by Geoff Beaumont.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 179 company matches
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Private investigative 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
175 records in the displayed employee bands.
4 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 United Kingdom, so it is reported there. Company counts and contact totals on this page are exact for United Kingdom, over 179 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 investigative 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 investigative firms did RevenueBase find based in the United Kingdom?
The saved snapshot records 179 matching company records, 687 tracked contacts and 119 verified emails. The public preview displays 25 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 25 private investigative firms based in the United Kingdom. Snapshot: September 20, 2026. https://revenuebase.ai/companies/private-investigative-firms/united-kingdom.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
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