Company lists · Data refreshed November 2026
Top 25 State security organizations based in the United Kingdom
RevenueBase identified 666 company matches for state security organizations associated with the United Kingdom as of November 2026 and tracks 12,224 professional contacts across them, including 911 with verified work emails. London is the largest hub.
This list covers company matches for state security organizations 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 November 5, 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 state security organizations based in the United Kingdom
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 541 contacts → | ||||
Exact match “Established in 2003, FGH are trusted by international brands to keep their assets and millions of people safe every year.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 2 | 337 contacts → | ||||
Exact match “Established in 1993, with commitment to our customers and staff alongside a strong ethos and standards driven approach, Regency Security is now the largest provider of door…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 3 | 275 contacts → | ||||
Exact match “We have moved as Profile Security Services is now Proudly OCS.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 4 | 183 contacts → | ||||
Exact match “We are able to supply a one stop security service for all types of security requirement.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 5 | 174 contacts → | ||||
Exact match “Brooknight is now part of Lodge Security.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 6 | 165 contacts → | ||||
Exact match “The Keyholding Company are a tech-enabled mobile security services company, specialising in alarm response, mobile patrols, locks and unlocks, emergency and temporary guarding…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 7 | 151 contacts → | ||||
Exact match “About Kingdom Security Established in March 1993, Kingdom Security is a leading UK security provider delivering professional, fully licensed security services nationwide.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 8 | 135 contacts → | ||||
Exact match “Vespasian Security was formed in February 2006.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 9 | 114 contacts → | ||||
Exact match “City Security understands that our staff are the first and last person a patron encounters on their visit to a venue.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 10 | 113 contacts → | ||||
Exact match “Protecting People, Property, Assets & Brands.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 11 | 106 contacts → | ||||
Exact match “Octavian Security is part of the Octavian Group, a global leader delivering integrated solutions across security, facilities management, and technology-led services.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 12 | 99 contacts → | ||||
Exact match “For a better service and competitive price try K4 Security Services At K4 we offer the following: 1.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 13 | 95 contacts → | ||||
Exact match “At Servoca Secure Solutions, we take great pride in delivering a multi-service security business; offering a range of complementary products and services to both the public and…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 14 | 90 contacts → | ||||
Exact match “Croma Security Solutions Group (CSSG) began in 1970 as a family-run business in Shirley, Southampton, known as County Locksmiths.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 15 | 86 contacts → | ||||
Exact match “Octaga Security Services provide a comprehensive security service for our clients' individual concerns and requirements.'Fit for purpose’ and ‘value for money’ are our bywords for…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 16 | 83 contacts → | ||||
Exact match “Knight Protection has nearly three decades’ experience providing bespoke protection and security solutions to private individuals, private estates, and corporate and public sector…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 17 | 79 contacts → | ||||
Exact match “We are Veteran Owned, Veteran Operated Security company based in London (HQ), with operation nationwide.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 18 | 73 contacts → | ||||
Exact match “Welcome to Britsafe Limited Years of Security and Cleaning experience have made us masters in providing defect-free security and cleaning solutions tailor-made to suit the…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 19 | 69 contacts → | ||||
Exact match “Northern Security Ltd is a leading guarding, alarm response and electronic security business operating throughout the North of England and South West Scotland.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 20 | 67 contacts → | ||||
Exact match “Black Diamond Security - Safeguarding Your World.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 21 | 65 contacts → | ||||
Exact match “Sentinel Group Security is a fast growing provider of all aspects of security personnel and manned security services operating across the United Kingdom.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 22 | 63 contacts → | ||||
Exact match “City Security Services (CSS) have more than 25 years’ experience within the corporate security, public sector, education and social housing markets delivering manned guarding…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 23 | 60 contacts → | ||||
Exact match “Portal Security is a leading provider of security services dedicated to safeguarding individuals, businesses, and communities.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 24 | 59 contacts → | ||||
Exact match “Land Sheriffs are a dedicated professional security task force providing protection and safety of our clients staff, customers, infrastructure and assets.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 25 | 58 contacts → | ||||
Exact match “At T.C.S.” Recorded in the RevenueBase company graph · Nov 5, 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 “state security organizations”. 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 666 state security organizations based in the United Kingdom
See the full list, filter by size, metro and specialty, and access 911 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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State security organizations based in the United Kingdom at a glance
As of Nov 5, 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 666 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 “state security organizations” 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 911 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 5, 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.
State security organizations by metro
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 “state security organizations”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many state security organizations are there based in the United Kingdom?
RevenueBase identified 666 company matches for state security organizations associated with the 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?
FGH Security tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city has the most state security organizations?
London leads with 203 company records, followed by Birmingham (25) and Manchester (25).
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 911 professional contacts with verified work emails tracked across these 666 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 5, 2026.
Ready to reach these companies? Verified emails and direct dials for all 666 state security organizations based in the United Kingdom. Start with a free account, no credit card.
Download this list →Related lists
State security organizations by geography
- State security organizations based in Melbourne, Australia
- State security organizations based in Sydney, Australia
- State security organizations based in Sao Paulo, Brazil
- State security organizations based in Toronto, Canada
- State security organizations based in Paris, France
- State security organizations based in Berlin, Germany
- State security organizations based in Johannesburg, South Africa
- State security organizations based in Dubai, United Arab Emirates
- State security organizations based in London, United Kingdom
- State security organizations based in Manchester, United Kingdom
- State security organizations based in Atlanta, United States
- State security organizations based in Austin, 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
- State security organizations based in Melbourne, Australia
- State security organizations based in Sydney, Australia
- State security organizations based in Sao Paulo, Brazil
- State security organizations based in Toronto, Canada
- State security organizations based in Paris, France
- State security organizations based in Berlin, Germany
Company intelligence · public preview
Top 25 state security organizations 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 666 matching company records for state security organizations based in the United Kingdom, with 12,224 tracked contacts and 911 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 5, 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 state security organizations 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 | FGH Securityfghsecurity.co.uk HQ: Manchester, United KingdomReported employees: 1,001-5,000 | Manchester, United Kingdom | 1,001-5,000 | Exact match | 541 contacts → |
“Established in 2003, FGH are trusted by international brands to keep their assets and millions of people safe every year.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Regency Securityregencysecurity.co.ukHQ: Braintree, United KingdomReported employees: 1,001-5,000 | Braintree, United Kingdom | 1,001-5,000 | Exact match | 337 contacts → |
“Established in 1993, with commitment to our customers and staff alongside a strong ethos and standards driven approach, Regency Security is now the largest provider of door…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  Profile Security Servicesocs.comHQ: Barrow-upon-humber, United KingdomReported employees: 1,001-5,000 | Barrow-upon-humber, United Kingdom | 1,001-5,000 | Exact match | 275 contacts → |
“We have moved as Profile Security Services is now Proudly OCS.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Unitrust Protection Servicesunitrust.co.ukHQ: Middx, United KingdomReported employees: 201-500 | Middx, United Kingdom | 201-500 | Exact match | 183 contacts → |
“We are able to supply a one stop security service for all types of security requirement.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  The Brooknight Grouplodge-security.comHQ: Milton Keynes, United KingdomReported employees: 1,001-5,000 | Milton Keynes, United Kingdom | 1,001-5,000 | Exact match | 174 contacts → |
“Brooknight is now part of Lodge Security.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  The Keyholding Companykeyholding.comHQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 165 contacts → |
“The Keyholding Company are a tech-enabled mobile security services company, specialising in alarm response, mobile patrols, locks and unlocks, emergency and temporary guarding…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Kingdom Security Serviceskingdom.co.ukHQ: Newton-le-willows, United KingdomReported employees: 5,001-10,000 | Newton-le-willows, United Kingdom | 5,001-10,000 | Exact match | 151 contacts → |
“About Kingdom Security Established in March 1993, Kingdom Security is a leading UK security provider delivering professional, fully licensed security services nationwide.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  Vespasian Securityvespasiansecurity.co.ukHQ: Portsmouth, United KingdomReported employees: 201-500 | Portsmouth, United Kingdom | 201-500 | Exact match | 135 contacts → |
“Vespasian Security was formed in February 2006.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  City Securitycitysecurityplymouth.co.ukHQ: Plympton, United KingdomReported employees: 51-200 | Plympton, United Kingdom | 51-200 | Exact match | 114 contacts → |
“City Security understands that our staff are the first and last person a patron encounters on their visit to a venue.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Consortio Securityconsortiosecurity.comHQ: Castle Donington, United KingdomReported employees: 501-1,000 | Castle Donington, United Kingdom | 501-1,000 | Exact match | 113 contacts → |
“Protecting People, Property, Assets & Brands.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  Octavian Securityoctaviansecurity.comHQ: Bingham, United KingdomReported employees: 201-500 | Bingham, United Kingdom | 201-500 | Exact match | 106 contacts → |
“Octavian Security is part of the Octavian Group, a global leader delivering integrated solutions across security, facilities management, and technology-led services.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  K4 Security - K4 Groupk4security.co.ukHQ: Hounslow, United KingdomReported employees: 201-500 | Hounslow, United Kingdom | 201-500 | Exact match | 99 contacts → |
“For a better service and competitive price try K4 Security Services At K4 we offer the following: 1.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Servoca Secure Solutions Limitedservoca-secure.comHQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 95 contacts → |
“At Servoca Secure Solutions, we take great pride in delivering a multi-service security business; offering a range of complementary products and services to both the public and…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Croma Security Solutions Group PLC Cssgcssgplc.comHQ: Whiteley, United KingdomReported employees: 501-1,000 | Whiteley, United Kingdom | 501-1,000 | Exact match | 90 contacts → |
“Croma Security Solutions Group (CSSG) began in 1970 as a family-run business in Shirley, Southampton, known as County Locksmiths.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  Octaga Security Services LTDoctaga.co.ukHQ: Hereford, United KingdomReported employees: 51-200 | Hereford, United Kingdom | 51-200 | Exact match | 86 contacts → |
“Octaga Security Services provide a comprehensive security service for our clients' individual concerns and requirements.'Fit for purpose’ and ‘value for money’ are our bywords for…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Knight Protectionknightprotection.co.ukHQ: Camberley, United KingdomReported employees: 201-500 | Camberley, United Kingdom | 201-500 | Exact match | 83 contacts → |
“Knight Protection has nearly three decades’ experience providing bespoke protection and security solutions to private individuals, private estates, and corporate and public sector…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Lead Element Security Groupleadelementsecurity.co.ukHQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 79 contacts → |
“We are Veteran Owned, Veteran Operated Security company based in London (HQ), with operation nationwide.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Britsafe Limitedbritsafe.comHQ: Amy Johnson Way, United KingdomReported employees: 501-1,000 | Amy Johnson Way, United Kingdom | 501-1,000 | Exact match | 73 contacts → |
“Welcome to Britsafe Limited Years of Security and Cleaning experience have made us masters in providing defect-free security and cleaning solutions tailor-made to suit the…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Northern Security LTDnorthernsecurityltd.co.ukHQ: Carlisle, United KingdomReported employees: 201-500 | Carlisle, United Kingdom | 201-500 | Exact match | 69 contacts → |
“Northern Security Ltd is a leading guarding, alarm response and electronic security business operating throughout the North of England and South West Scotland.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  Black Diamond Securityblackdiamondsecurity.co.ukHQ: London, United KingdomReported employees: 201-500 | London, United Kingdom | 201-500 | Exact match | 67 contacts → |
“Black Diamond Security - Safeguarding Your World.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  Sentinel Group Securitysgs-ltd.comHQ: Loughton, United KingdomReported employees: 201-500 | Loughton, United Kingdom | 201-500 | Exact match | 65 contacts → |
“Sentinel Group Security is a fast growing provider of all aspects of security personnel and manned security services operating across the United Kingdom.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  City Security Services Part Of City Group Securitycitysecurity.org.ukHQ: London, United KingdomReported employees: 201-500 | London, United Kingdom | 201-500 | Exact match | 63 contacts → |
“City Security Services (CSS) have more than 25 years’ experience within the corporate security, public sector, education and social housing markets delivering manned guarding…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  Portal Securityportalsecurity.co.ukHQ: Cumbernauld, United KingdomReported employees: 201-500 | Cumbernauld, United Kingdom | 201-500 | Exact match | 60 contacts → |
“Portal Security is a leading provider of security services dedicated to safeguarding individuals, businesses, and communities.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  Land Sheriffs LTDlandsheriffs.co.ukHQ: Harlow, United KingdomReported employees: 51-200 | Harlow, United Kingdom | 51-200 | Exact match | 59 contacts → |
“Land Sheriffs are a dedicated professional security task force providing protection and safety of our clients staff, customers, infrastructure and assets.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  Total Care Securitytotalcaresecurity.comHQ: Newark-on-trent, United KingdomReported employees: 201-500 | Newark-on-trent, United Kingdom | 201-500 | Exact match | 58 contacts → |
“At T.C.S.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 666 company matches
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State security organizations: dataset insights
November 5, 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
653 records in the displayed employee bands.
13 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 666 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 5, 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 ↗
State security organizations by metro
Questions about this company list
What does Exact match mean for state security organizations?
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 state security organizations did RevenueBase find based in the United Kingdom?
The saved snapshot records 666 matching company records, 12,224 tracked contacts and 911 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 5, 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
State security organizations by geography
- State security organizations based in Melbourne, Australia
- State security organizations based in Sydney, Australia
- State security organizations based in Sao Paulo, Brazil
- State security organizations based in Toronto, Canada
- State security organizations based in Paris, France
- State security organizations based in Berlin, Germany
- State security organizations based in Johannesburg, South Africa
- State security organizations based in Dubai, United Arab Emirates
- State security organizations based in London, United Kingdom
- State security organizations based in Manchester, United Kingdom
- State security organizations based in Atlanta, United States
- State security organizations based in Austin, United States
Cite this list
RevenueBase Data Team. Top 25 state security organizations based in the United Kingdom. Snapshot: November 5, 2026. https://revenuebase.ai/companies/state-security-organizations/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
- State security organizations based in Melbourne, Australia
- State security organizations based in Sydney, Australia
- State security organizations based in Sao Paulo, Brazil
- State security organizations based in Toronto, Canada
- State security organizations based in Paris, France
- State security organizations based in Berlin, Germany
Company intelligence · public preview
Top 25 state security organizations based in the United Kingdom
RevenueBase records 666 matching company records for state security organizations based in the United Kingdom, with 12,224 tracked contacts and 911 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 5, 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 state security organizations 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 | FGH Securityfghsecurity.co.uk HQ: Manchester, United KingdomReported employees: 1,001-5,000 | Manchester, United Kingdom | 1,001-5,000 | Exact match | 541 contacts → |
“Established in 2003, FGH are trusted by international brands to keep their assets and millions of people safe every year.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Regency Securityregencysecurity.co.uk HQ: Braintree, United KingdomReported employees: 1,001-5,000 | Braintree, United Kingdom | 1,001-5,000 | Exact match | 337 contacts → |
“Established in 1993, with commitment to our customers and staff alongside a strong ethos and standards driven approach, Regency Security is now the largest provider of door…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Profile Security Servicesocs.com HQ: Barrow-upon-humber, United KingdomReported employees: 1,001-5,000 | Barrow-upon-humber, United Kingdom | 1,001-5,000 | Exact match | 275 contacts → |
“We have moved as Profile Security Services is now Proudly OCS.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Unitrust Protection Servicesunitrust.co.uk HQ: Middx, United KingdomReported employees: 201-500 | Middx, United Kingdom | 201-500 | Exact match | 183 contacts → |
“We are able to supply a one stop security service for all types of security requirement.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | The Brooknight Grouplodge-security.com HQ: Milton Keynes, United KingdomReported employees: 1,001-5,000 | Milton Keynes, United Kingdom | 1,001-5,000 | Exact match | 174 contacts → |
“Brooknight is now part of Lodge Security.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | The Keyholding Companykeyholding.com HQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 165 contacts → |
“The Keyholding Company are a tech-enabled mobile security services company, specialising in alarm response, mobile patrols, locks and unlocks, emergency and temporary guarding…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Kingdom Security Serviceskingdom.co.uk HQ: Newton-le-willows, United KingdomReported employees: 5,001-10,000 | Newton-le-willows, United Kingdom | 5,001-10,000 | Exact match | 151 contacts → |
“About Kingdom Security Established in March 1993, Kingdom Security is a leading UK security provider delivering professional, fully licensed security services nationwide.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Vespasian Securityvespasiansecurity.co.uk HQ: Portsmouth, United KingdomReported employees: 201-500 | Portsmouth, United Kingdom | 201-500 | Exact match | 135 contacts → |
“Vespasian Security was formed in February 2006.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | City Securitycitysecurityplymouth.co.uk HQ: Plympton, United KingdomReported employees: 51-200 | Plympton, United Kingdom | 51-200 | Exact match | 114 contacts → |
“City Security understands that our staff are the first and last person a patron encounters on their visit to a venue.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Consortio Securityconsortiosecurity.com HQ: Castle Donington, United KingdomReported employees: 501-1,000 | Castle Donington, United Kingdom | 501-1,000 | Exact match | 113 contacts → |
“Protecting People, Property, Assets & Brands.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Octavian Securityoctaviansecurity.com HQ: Bingham, United KingdomReported employees: 201-500 | Bingham, United Kingdom | 201-500 | Exact match | 106 contacts → |
“Octavian Security is part of the Octavian Group, a global leader delivering integrated solutions across security, facilities management, and technology-led services.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | K4 Security - K4 Groupk4security.co.uk HQ: Hounslow, United KingdomReported employees: 201-500 | Hounslow, United Kingdom | 201-500 | Exact match | 99 contacts → |
“For a better service and competitive price try K4 Security Services At K4 we offer the following: 1.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Servoca Secure Solutions Limitedservoca-secure.com HQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 95 contacts → |
“At Servoca Secure Solutions, we take great pride in delivering a multi-service security business; offering a range of complementary products and services to both the public and…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Croma Security Solutions Group PLC Cssgcssgplc.com HQ: Whiteley, United KingdomReported employees: 501-1,000 | Whiteley, United Kingdom | 501-1,000 | Exact match | 90 contacts → |
“Croma Security Solutions Group (CSSG) began in 1970 as a family-run business in Shirley, Southampton, known as County Locksmiths.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Octaga Security Services LTDoctaga.co.uk HQ: Hereford, United KingdomReported employees: 51-200 | Hereford, United Kingdom | 51-200 | Exact match | 86 contacts → |
“Octaga Security Services provide a comprehensive security service for our clients' individual concerns and requirements.'Fit for purpose’ and ‘value for money’ are our bywords for…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Knight Protectionknightprotection.co.uk HQ: Camberley, United KingdomReported employees: 201-500 | Camberley, United Kingdom | 201-500 | Exact match | 83 contacts → |
“Knight Protection has nearly three decades’ experience providing bespoke protection and security solutions to private individuals, private estates, and corporate and public sector…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Lead Element Security Groupleadelementsecurity.co.uk HQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 79 contacts → |
“We are Veteran Owned, Veteran Operated Security company based in London (HQ), with operation nationwide.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Britsafe Limitedbritsafe.com HQ: Amy Johnson Way, United KingdomReported employees: 501-1,000 | Amy Johnson Way, United Kingdom | 501-1,000 | Exact match | 73 contacts → |
“Welcome to Britsafe Limited Years of Security and Cleaning experience have made us masters in providing defect-free security and cleaning solutions tailor-made to suit the…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Northern Security LTDnorthernsecurityltd.co.uk HQ: Carlisle, United KingdomReported employees: 201-500 | Carlisle, United Kingdom | 201-500 | Exact match | 69 contacts → |
“Northern Security Ltd is a leading guarding, alarm response and electronic security business operating throughout the North of England and South West Scotland.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Black Diamond Securityblackdiamondsecurity.co.uk HQ: London, United KingdomReported employees: 201-500 | London, United Kingdom | 201-500 | Exact match | 67 contacts → |
“Black Diamond Security - Safeguarding Your World.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Sentinel Group Securitysgs-ltd.com HQ: Loughton, United KingdomReported employees: 201-500 | Loughton, United Kingdom | 201-500 | Exact match | 65 contacts → |
“Sentinel Group Security is a fast growing provider of all aspects of security personnel and manned security services operating across the United Kingdom.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | City Security Services Part Of City Group Securitycitysecurity.org.uk HQ: London, United KingdomReported employees: 201-500 | London, United Kingdom | 201-500 | Exact match | 63 contacts → |
“City Security Services (CSS) have more than 25 years’ experience within the corporate security, public sector, education and social housing markets delivering manned guarding…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Portal Securityportalsecurity.co.uk HQ: Cumbernauld, United KingdomReported employees: 201-500 | Cumbernauld, United Kingdom | 201-500 | Exact match | 60 contacts → |
“Portal Security is a leading provider of security services dedicated to safeguarding individuals, businesses, and communities.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Land Sheriffs LTDlandsheriffs.co.uk HQ: Harlow, United KingdomReported employees: 51-200 | Harlow, United Kingdom | 51-200 | Exact match | 59 contacts → |
“Land Sheriffs are a dedicated professional security task force providing protection and safety of our clients staff, customers, infrastructure and assets.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Total Care Securitytotalcaresecurity.com HQ: Newark-on-trent, United KingdomReported employees: 201-500 | Newark-on-trent, United Kingdom | 201-500 | Exact match | 58 contacts → |
“At T.C.S.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 666 company matches
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State security organizations: dataset insights
November 5, 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
653 records in the displayed employee bands.
13 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 666 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 5, 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 ↗
State security organizations by metro
Questions about this company list
What does Exact match mean for state security organizations?
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 state security organizations did RevenueBase find based in the United Kingdom?
The saved snapshot records 666 matching company records, 12,224 tracked contacts and 911 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 5, 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
State security organizations by geography
- State security organizations based in Melbourne, Australia
- State security organizations based in Sydney, Australia
- State security organizations based in Sao Paulo, Brazil
- State security organizations based in Toronto, Canada
- State security organizations based in Paris, France
- State security organizations based in Berlin, Germany
- State security organizations based in Johannesburg, South Africa
- State security organizations based in Dubai, United Arab Emirates
- State security organizations based in London, United Kingdom
- State security organizations based in Manchester, United Kingdom
- State security organizations based in Atlanta, United States
- State security organizations based in Austin, United States
Cite this list
RevenueBase Data Team. Top 25 state security organizations based in the United Kingdom. Snapshot: November 5, 2026. https://revenuebase.ai/companies/state-security-organizations/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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- State security organizations based in Melbourne, Australia
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- State security organizations based in Toronto, Canada
- State security organizations based in Paris, France
- State security organizations based in Berlin, Germany