Company lists · Data refreshed November 2026
Top 25 Open source intelligence providers based in London, United Kingdom
RevenueBase identified 111 company matches for open source intelligence providers associated with London, United Kingdom as of November 2026 and tracks 5,742 professional contacts across them, including 2,064 with verified work emails. Across the United Kingdom, London is the largest hub for this category.
This list covers company matches for open source intelligence providers associated with London, 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 November 6, 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 open source intelligence providers based in London, United Kingdom
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 3,116 contacts → | ||||
Exact match “In a world drowning in data, we deliver clarity.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 2 | 847 contacts → | ||||
Exact match “BBC Monitoring provides trusted analysis of global media to help you make sense of complex narratives and world events.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 3 | 126 contacts → | ||||
Exact match “FACT are at the forefront of investigative and intelligence services, recognised by organisations, law enforcement, and governments worldwide.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 4 | 84 contacts → | ||||
Exact match “Visiongain is a global intelligence publisher delivering independent analysis, editorial commentary, and market forecasting across healthcare, defence, energy, transportation, and…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 5 | 50 contacts → | ||||
Exact match “Dragonfly is a geopolitical and security intelligence service for the world’s leading organisations.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 6 | 31 contacts → | ||||
Exact match “OSINT Industries is an automated & scalable email, phone number & username checker tool for Law Enforcement, Private Investigators, Government and OSINT Practitioners.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 7 | 25 contacts → | ||||
Exact match “We give our clients the confidence to identify opportunities, mitigate risks, tackle challenges and understand the landscapes they inhabit.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 8 | 24 contacts → | ||||
Exact match “Briter is a research and intelligence firm focused on emerging markets.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 9 | 21 contacts → | ||||
Exact match “Sastre is a research consultancy, a global collective of multi-lingual corporate investigations professionals and public policy analysts who specialise in modern open source…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 10 | 20 contacts → | ||||
Exact match “Grey Dynamics is a private intelligence firm that offers apolitical analysis on topics such as security, geopolitics, defence and espionage.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 11 | 18 contacts → | ||||
Exact match “Exclusive Analysis, recently acquired by IHS, is a specialist intelligence company that forecasts commercially relevant political and violent risks worldwide.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 12 | 17 contacts → | ||||
Exact match “Investment Reports is dedicated to bringing you comprehensive market intelligence in key business sectors across the world - now in partnership with Newsweek.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 13 | 13 contacts → | ||||
Exact match “Bring together the UK OSINT community by gathering experts, practitioners, and learners in an informal environment to grow their OSINT capabilities, knowledge & network.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 14 | 11 contacts → | ||||
Exact match “Good decisions are built on good insight.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 15 | 9 contacts → | ||||
Exact match “Our Mission In a world where threats move in seconds, most organisations are still working in weeks.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 16 | 9 contacts → | ||||
Exact match “We are a full-service corporate intelligence and investigations firm.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 17 | 9 contacts → | ||||
Exact match “Informing decisions and enabling connections We produce vital commercial intelligence for global audiences, providing timely, granular and actionable insights which our clients…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 18 | 9 contacts → | ||||
Exact match “Welcome to Triton International Ltd - “MAINTAINING CONTINUITY BY MITIGATING RISK”© Triton International Ltd was established with the belief that every aspect of Governance or…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 19 | 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 · Nov 6, 2026 · View company records in RevenueBase | |||||
| 20 | 8 contacts → | ||||
Exact match “InsightX is a specialist independent intelligence, investigations and due diligence agency.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 21 | 8 contacts → | ||||
Exact match “Are You Looking For Competitive/Market Intelligence or Commercial Due Diligence Expertise?” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 22 | 7 contacts → | ||||
Exact match “Feel confident with your industry knowledge to innovate and make decisions knowing you have the best intelligence possible.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 23 | 5 contacts → | ||||
Exact match “Prism advises a select group of top-tier clients working in challenging markets and dealing with complex operations, disputes, and negotiations.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 24 | 4 contacts → | ||||
Exact match “Cloudbreak Analysis is a trusted British company specialising in OSINT and Intelligence Analysis training and consultancy.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 25 | 4 contacts → | ||||
Exact match “We are an International Risk Management, Intelligence, and Investigations Consultancy, strategically headquartered in the heart of Mayfair, London.” Recorded in the RevenueBase company graph · Nov 6, 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 “open source intelligence providers”. 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 111 open source intelligence providers based in London, United Kingdom
See the full list, filter by size, metro and specialty, and access 2,064 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Open source intelligence providers based in London, United Kingdom at a glance
As of Nov 6, 2026Companies by employee count
Email recency for this list is measured across the whole United Kingdom list rather than for London, so it is reported there. Company counts and contact totals on this page are exact for London, over 111 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 London, United Kingdom whose business descriptions match “open source intelligence providers” 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 2,064 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on November 6, 2026. Lists refresh periodically as the graph is re-checked.
- Record context
- Company records and descriptions can change. Check the company's website for its current services and locations.
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 “open source intelligence providers”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many open source intelligence providers are there based in London, United Kingdom?
RevenueBase identified 111 company matches for open source intelligence providers associated with London, United Kingdom as of November 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.
What is the largest company on this list?
Globaldata PLC tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city in the United Kingdom has the most open source intelligence providers?
London leads the United Kingdom with 111 company records, followed by Corsham (2) and Leeds (2).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 2,064 professional contacts with verified work emails tracked across these 111 companies; direct dials are available where recorded.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 6, 2026.
Ready to reach these companies? Verified emails and direct dials for all 111 open source intelligence providers based in London, United Kingdom. Start with a free account, no credit card.
Download this list →Related lists
Open source intelligence providers by geography
- Open source intelligence providers based in Paris, France
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- Open source intelligence providers based in Canada
- Open source intelligence providers based in France
- Open source intelligence providers based in India
- Open source intelligence providers based in Israel
- Open source intelligence providers based in the United Kingdom
- Open source intelligence providers 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
- Open source intelligence providers based in Paris, France
- Open source intelligence providers based in New York, United States
- Open source intelligence providers based in Washington, United States
- Open source intelligence providers based in Canada
- Open source intelligence providers based in France
- Open source intelligence providers based in India
Company intelligence · public preview
Top 25 open source intelligence providers based in London, 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 111 matching company records for open source intelligence providers based in London, United Kingdom, with 5,742 tracked contacts and 2,064 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: November 6, 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 open source intelligence providers based in London, 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 |  Globaldata PLCglobaldata.comHQ: London, United KingdomReported employees: 1,001-5,000 | London, United Kingdom | 1,001-5,000 | Exact match | 3,116 contacts → |
“In a world drowning in data, we deliver clarity.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  BBC Monitoringmonitoring.bbc.co.ukHQ: London, United KingdomReported employees: 201-500 | London, United Kingdom | 201-500 | Exact match | 847 contacts → |
“BBC Monitoring provides trusted analysis of global media to help you make sense of complex narratives and world events.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  FACTfact-uk.org.ukHQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 126 contacts → |
“FACT are at the forefront of investigative and intelligence services, recognised by organisations, law enforcement, and governments worldwide.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Visiongainvisiongain.comHQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 84 contacts → |
“Visiongain is a global intelligence publisher delivering independent analysis, editorial commentary, and market forecasting across healthcare, defence, energy, transportation, and…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Dragonfly From DOW Jonesdowjones.comHQ: London, United KingdomReported employees: Not recorded | London, United Kingdom | Not recorded | Exact match | 50 contacts → |
“Dragonfly is a geopolitical and security intelligence service for the world’s leading organisations.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  Osint Industriesosint.industriesHQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 31 contacts → |
“OSINT Industries is an automated & scalable email, phone number & username checker tool for Law Enforcement, Private Investigators, Government and OSINT Practitioners.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Ridgeway Informationridgeway-information.comHQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 25 contacts → |
“We give our clients the confidence to identify opportunities, mitigate risks, tackle challenges and understand the landscapes they inhabit.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  Briterbriter.coHQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 24 contacts → |
“Briter is a research and intelligence firm focused on emerging markets.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Sastre Consultingsastreconsulting.comHQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 21 contacts → |
“Sastre is a research consultancy, a global collective of multi-lingual corporate investigations professionals and public policy analysts who specialise in modern open source…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Grey Dynamicsgreydynamics.comHQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 20 contacts → |
“Grey Dynamics is a private intelligence firm that offers apolitical analysis on topics such as security, geopolitics, defence and espionage.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  Exclusive Analysisexclusive-analysis.comHQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 18 contacts → |
“Exclusive Analysis, recently acquired by IHS, is a specialist intelligence company that forecasts commercially relevant political and violent risks worldwide.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Investment Reportsinvestmentreports.coHQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 17 contacts → |
“Investment Reports is dedicated to bringing you comprehensive market intelligence in key business sectors across the world - now in partnership with Newsweek.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  UK Osint Communityosint.ukHQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 13 contacts → |
“Bring together the UK OSINT community by gathering experts, practitioners, and learners in an informal environment to grow their OSINT capabilities, knowledge & network.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Sapient Insightsapient-insight.comHQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 11 contacts → |
“Good decisions are built on good insight.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  Valinor Intelligencevalinorintelligence.comHQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 9 contacts → |
“Our Mission In a world where threats move in seconds, most organisations are still working in weeks.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Field Intelligencefieldintel.coHQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 9 contacts → |
“We are a full-service corporate intelligence and investigations firm.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Globe Business Media Groupglobebmg.com HQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 9 contacts → |
“Informing decisions and enabling connections We produce vital commercial intelligence for global audiences, providing timely, granular and actionable insights which our clients…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Triton International LTDtritoninternationalltd.comHQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 9 contacts → |
“Welcome to Triton International Ltd - “MAINTAINING CONTINUITY BY MITIGATING RISK”© Triton International Ltd was established with the belief that every aspect of Governance or…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  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 · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  Insightxinsightxintel.comHQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 8 contacts → |
“InsightX is a specialist independent intelligence, investigations and due diligence agency.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Intelligentsia Worldwideintelligentsia.net HQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 8 contacts → |
“Are You Looking For Competitive/Market Intelligence or Commercial Due Diligence Expertise?” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  Industry Sliceindustryslice.comHQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 7 contacts → |
“Feel confident with your industry knowledge to innovate and make decisions knowing you have the best intelligence possible.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  Prism Strategic Intelligenceprismlondon.co.ukHQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 5 contacts → |
“Prism advises a select group of top-tier clients working in challenging markets and dealing with complex operations, disputes, and negotiations.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  Cloudbreak Analysiscloudbreakanalysis.comHQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 4 contacts → |
“Cloudbreak Analysis is a trusted British company specialising in OSINT and Intelligence Analysis training and consultancy.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  CSLcovertsecurityltd.comHQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 4 contacts → |
“We are an International Risk Management, Intelligence, and Investigations Consultancy, strategically headquartered in the heart of Mayfair, London.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 111 company matches
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Open source intelligence providers: dataset insights
November 6, 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
111 records in the displayed employee bands.
0 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 across the whole United Kingdom list rather than for London, so it is reported there. Company counts and contact totals on this page are exact for London, over 111 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: November 6, 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 open source intelligence providers?
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 open source intelligence providers did RevenueBase find based in London, United Kingdom?
The saved snapshot records 111 matching company records, 5,742 tracked contacts and 2,064 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: November 6, 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
Open source intelligence providers by geography
- Open source intelligence providers based in Paris, France
- Open source intelligence providers based in New York, United States
- Open source intelligence providers based in Washington, United States
- Open source intelligence providers based in Canada
- Open source intelligence providers based in France
- Open source intelligence providers based in India
- Open source intelligence providers based in Israel
- Open source intelligence providers based in the United Kingdom
- Open source intelligence providers based in the United States
Cite this list
RevenueBase Data Team. Top 25 open source intelligence providers based in London, United Kingdom. Snapshot: November 6, 2026. https://revenuebase.ai/companies/open-source-intelligence-providers/united-kingdom/london.
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
- Open source intelligence providers based in Paris, France
- Open source intelligence providers based in New York, United States
- Open source intelligence providers based in Washington, United States
- Open source intelligence providers based in Canada
- Open source intelligence providers based in France
- Open source intelligence providers based in India
Company intelligence · public preview
Top 25 open source intelligence providers based in London, United Kingdom
RevenueBase records 111 matching company records for open source intelligence providers based in London, United Kingdom, with 5,742 tracked contacts and 2,064 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: November 6, 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 open source intelligence providers based in London, 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 | Globaldata PLCglobaldata.com HQ: London, United KingdomReported employees: 1,001-5,000 | London, United Kingdom | 1,001-5,000 | Exact match | 3,116 contacts → |
“In a world drowning in data, we deliver clarity.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | BBC Monitoringmonitoring.bbc.co.uk HQ: London, United KingdomReported employees: 201-500 | London, United Kingdom | 201-500 | Exact match | 847 contacts → |
“BBC Monitoring provides trusted analysis of global media to help you make sense of complex narratives and world events.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | FACTfact-uk.org.uk HQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 126 contacts → |
“FACT are at the forefront of investigative and intelligence services, recognised by organisations, law enforcement, and governments worldwide.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Visiongainvisiongain.com HQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 84 contacts → |
“Visiongain is a global intelligence publisher delivering independent analysis, editorial commentary, and market forecasting across healthcare, defence, energy, transportation, and…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Dragonfly From DOW Jonesdowjones.com HQ: London, United KingdomReported employees: Not recorded | London, United Kingdom | Not recorded | Exact match | 50 contacts → |
“Dragonfly is a geopolitical and security intelligence service for the world’s leading organisations.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Osint Industriesosint.industries HQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 31 contacts → |
“OSINT Industries is an automated & scalable email, phone number & username checker tool for Law Enforcement, Private Investigators, Government and OSINT Practitioners.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Ridgeway Informationridgeway-information.com HQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 25 contacts → |
“We give our clients the confidence to identify opportunities, mitigate risks, tackle challenges and understand the landscapes they inhabit.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Briterbriter.co HQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 24 contacts → |
“Briter is a research and intelligence firm focused on emerging markets.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Sastre Consultingsastreconsulting.com HQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 21 contacts → |
“Sastre is a research consultancy, a global collective of multi-lingual corporate investigations professionals and public policy analysts who specialise in modern open source…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Grey Dynamicsgreydynamics.com HQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 20 contacts → |
“Grey Dynamics is a private intelligence firm that offers apolitical analysis on topics such as security, geopolitics, defence and espionage.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Exclusive Analysisexclusive-analysis.com HQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 18 contacts → |
“Exclusive Analysis, recently acquired by IHS, is a specialist intelligence company that forecasts commercially relevant political and violent risks worldwide.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Investment Reportsinvestmentreports.co HQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 17 contacts → |
“Investment Reports is dedicated to bringing you comprehensive market intelligence in key business sectors across the world - now in partnership with Newsweek.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | UK Osint Communityosint.uk HQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 13 contacts → |
“Bring together the UK OSINT community by gathering experts, practitioners, and learners in an informal environment to grow their OSINT capabilities, knowledge & network.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Sapient Insightsapient-insight.com HQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 11 contacts → |
“Good decisions are built on good insight.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Valinor Intelligencevalinorintelligence.com HQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 9 contacts → |
“Our Mission In a world where threats move in seconds, most organisations are still working in weeks.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Field Intelligencefieldintel.co HQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 9 contacts → |
“We are a full-service corporate intelligence and investigations firm.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Globe Business Media Groupglobebmg.com HQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 9 contacts → |
“Informing decisions and enabling connections We produce vital commercial intelligence for global audiences, providing timely, granular and actionable insights which our clients…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Triton International LTDtritoninternationalltd.com HQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 9 contacts → |
“Welcome to Triton International Ltd - “MAINTAINING CONTINUITY BY MITIGATING RISK”© Triton International Ltd was established with the belief that every aspect of Governance or…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | 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 · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Insightxinsightxintel.com HQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 8 contacts → |
“InsightX is a specialist independent intelligence, investigations and due diligence agency.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Intelligentsia Worldwideintelligentsia.net HQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 8 contacts → |
“Are You Looking For Competitive/Market Intelligence or Commercial Due Diligence Expertise?” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Industry Sliceindustryslice.com HQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 7 contacts → |
“Feel confident with your industry knowledge to innovate and make decisions knowing you have the best intelligence possible.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Prism Strategic Intelligenceprismlondon.co.uk HQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 5 contacts → |
“Prism advises a select group of top-tier clients working in challenging markets and dealing with complex operations, disputes, and negotiations.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Cloudbreak Analysiscloudbreakanalysis.com HQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 4 contacts → |
“Cloudbreak Analysis is a trusted British company specialising in OSINT and Intelligence Analysis training and consultancy.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | CSLcovertsecurityltd.com HQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 4 contacts → |
“We are an International Risk Management, Intelligence, and Investigations Consultancy, strategically headquartered in the heart of Mayfair, London.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 111 company matches
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Open source intelligence providers: dataset insights
November 6, 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
111 records in the displayed employee bands.
0 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 across the whole United Kingdom list rather than for London, so it is reported there. Company counts and contact totals on this page are exact for London, over 111 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: November 6, 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 open source intelligence providers?
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 open source intelligence providers did RevenueBase find based in London, United Kingdom?
The saved snapshot records 111 matching company records, 5,742 tracked contacts and 2,064 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: November 6, 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 open source intelligence providers based in London, United Kingdom. Snapshot: November 6, 2026. https://revenuebase.ai/companies/open-source-intelligence-providers/united-kingdom/london.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
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