Company lists · Data refreshed September 2026
Top 25 SaaS security companies based in the United Kingdom
RevenueBase identified 76 company matches for SaaS security companies associated with the United Kingdom as of September 2026 and tracks 5,674 professional contacts across them, including 2,806 with verified work emails. London is the largest hub.
This list covers company matches for SaaS security companies associated with the United Kingdom, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 29, 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 SaaS security companies based in the United Kingdom
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 4,925 contacts → | ||||
Exact match “Sophos is a cybersecurity leader defending organizations globally with an AI-driven platform and expert-led services.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 2 | 78 contacts → | ||||
Exact match “We are an SIA Approved Contractor, specializing in Manned Guarding and CCTV solutions.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 3 | 70 contacts → | ||||
Exact match “USSG holds SIA ACS-approved contractor status for the provision of Security Guarding Services in the heart of Manchester, renowned for its professional security services…” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 4 | 68 contacts → | ||||
Exact match “The organisations that run our world face relentless complexity and evolving threats.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 5 | 24 contacts → | ||||
Exact match “Whatever you supply, design, build, manufacture, or grow, its excelling at it that has got your business to where it is today.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 6 | 19 contacts → | ||||
Exact match “Why Clearswift?” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 7 | 18 contacts → | ||||
Exact match “Organisation focused on Cloud and Security” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 8 | 14 contacts → | ||||
Exact match “CloudSecure delivers secure software and cloud systems for security-critical environments.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 9 | 11 contacts → | ||||
Exact match “OLS are a UK based company specialising in transitioning customers to cloud based security solutions.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 10 | 10 contacts → | ||||
Exact match “Defenx is an IT company that has an extensive background in providing businesses with cloud based security solutions and support for their digital infrastructure.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 11 | 10 contacts → | ||||
Exact match “From cyber security, through to safeguarding and compliance, we provide digital security solutions perfectly designed to suit any requirement.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 12 | 9 contacts → | ||||
Exact match “skyPurple Cloud | Smarter Cloud.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 13 | 9 contacts → | ||||
Exact match “DefensityOne is a cybersecurity solutions provider specializing in proactive threat detection, risk management, and digital defense services.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 14 | 8 contacts → | ||||
Exact match “Cyscale is a cloud-native security solution that constantly monitors your cloud environment.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 15 | 7 contacts → | ||||
Exact match “Threat Protect is a vendor-agnostic cybersecurity, compliance and AI governance partner based in London, working with organisations across finance, legal, energy, pharma…” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 16 | 6 contacts → | ||||
Exact match “Panther Security was established over 30 years ago with a vision to build the leading independent security company in East Anglia, North and East London.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 17 | 6 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 18 | 5 contacts → | ||||
Exact match “Automate the boring.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 19 | 5 contacts → | ||||
Exact match “CM Security provides a Managed Service of Cloud Security and Protection combined with Professional Services from specialised professionals who’ll help you implement the right mix…” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 20 | 5 contacts → | ||||
Exact match “CASTLE ALARMS 1981 LIMITED is a fire and security company based out of MILLENNIUM HOUSE, KENDAL, United Kingdom.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 21 | 4 contacts → | ||||
Exact match “CyberAlarm is an intuitive, cloud-based, AI-driven cyber security solution that protects your and your clients’ businesses – without over complication and high costs.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 22 | 4 contacts → | ||||
Exact match “KIT365 is a cybersecurity company based in the city of Leicester.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 23 | 3 contacts → | ||||
Exact match “We help organisations and businesses to stay secure and compliant with customised cyber security packages tailored to their needs.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 24 | 2 contacts → | ||||
Exact match “Cloud security and management is for everyone.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 25 | 2 contacts → | ||||
Exact match “Our experience leads your business to success We have specialised in internet security and scalable cloud architecture since 2011.” Recorded in the RevenueBase company graph · Sep 29, 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 “SaaS security companies”. 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 76 SaaS security companies based in the United Kingdom
See the full list, filter by size, metro and specialty, and access 2,806 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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SaaS security companies based in the United Kingdom at a glance
As of Sep 29, 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 76 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 “SaaS security companies” 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 2,806 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on September 29, 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 “SaaS security companies”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many SaaS security companies are there based in the United Kingdom?
RevenueBase identified 76 company matches for SaaS security companies associated with the United Kingdom as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.
What is the largest company on this list?
Sophos tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city has the most SaaS security companies?
London leads with 29 company records, followed by Glasgow (3) 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 2,806 professional contacts with verified work emails tracked across these 76 companies; direct dials are available where recorded.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 29, 2026.
Ready to reach these companies? Verified emails and direct dials for all 76 SaaS security companies based in the United Kingdom. Start with a free account, no credit card.
Download this list →Related lists
SaaS security companies by geography
- SaaS security companies based in New York, United States
- SaaS security companies based in Australia
- SaaS security companies based in Brazil
- SaaS security companies based in Canada
- SaaS security companies based in France
- SaaS security companies based in Germany
- SaaS security companies based in India
- SaaS security companies based in Israel
- SaaS security companies 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
- SaaS security companies based in New York, United States
- SaaS security companies based in Australia
- SaaS security companies based in Brazil
- SaaS security companies based in Canada
- SaaS security companies based in France
- SaaS security companies based in Germany
Company intelligence · public preview
Top 25 SaaS security companies 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 76 matching company records for SaaS security companies based in the United Kingdom, with 5,674 tracked contacts and 2,806 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 29, 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 SaaS security companies 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 |  Sophossophos.comHQ: Abingdon, United KingdomReported employees: 5,001-10,000 | Abingdon, United Kingdom | 5,001-10,000 | Exact match | 4,925 contacts → |
“Sophos is a cybersecurity leader defending organizations globally with an AI-driven platform and expert-led services.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  H&m Security Services Limitedhmsecurityservices.co.ukHQ: Woodford Green, United KingdomReported employees: 51-200 | Woodford Green, United Kingdom | 51-200 | Exact match | 78 contacts → |
“We are an SIA Approved Contractor, specializing in Manned Guarding and CCTV solutions.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  Universal Support Services Group Ussg LTDussgl.co.ukHQ: Manchester, United KingdomReported employees: 201-500 | Manchester, United Kingdom | 201-500 | Exact match | 70 contacts → |
“USSG holds SIA ACS-approved contractor status for the provision of Security Guarding Services in the heart of Manchester, renowned for its professional security services…” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Telesofttelesoft-technologies.comHQ: Blandford, United KingdomReported employees: 51-200 | Blandford, United Kingdom | 51-200 | Exact match | 68 contacts → |
“The organisations that run our world face relentless complexity and evolving threats.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Vambrace Cybersecurityvambrace.co.ukHQ: Leeds, United KingdomReported employees: 11-50 | Leeds, United Kingdom | 11-50 | Exact match | 24 contacts → |
“Whatever you supply, design, build, manufacture, or grow, its excelling at it that has got your business to where it is today.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Clearswiftclearswift.com HQ: Berkshire, United KingdomReported employees: 201-500 | Berkshire, United Kingdom | 201-500 | Exact match | 19 contacts → |
“Why Clearswift?” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Threat Intelligence Bureau LTDthreatintelligencebureau.comHQ: Chelmsford, United KingdomReported employees: 201-500 | Chelmsford, United Kingdom | 201-500 | Exact match | 18 contacts → |
“Organisation focused on Cloud and Security” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  Cloudsecurecloudsecure.ltdHQ: Cheltenham, United KingdomReported employees: 11-50 | Cheltenham, United Kingdom | 11-50 | Exact match | 14 contacts → |
“CloudSecure delivers secure software and cloud systems for security-critical environments.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  OLS Oliver LAW Security LTDolsltd.netHQ: Doncaster, United KingdomReported employees: 11-50 | Doncaster, United Kingdom | 11-50 | Exact match | 11 contacts → |
“OLS are a UK based company specialising in transitioning customers to cloud based security solutions.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Defenxdefenx.comHQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 10 contacts → |
“Defenx is an IT company that has an extensive background in providing businesses with cloud based security solutions and support for their digital infrastructure.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  Xentraxentra.co.ukHQ: Leeds, United KingdomReported employees: 11-50 | Leeds, United Kingdom | 11-50 | Exact match | 10 contacts → |
“From cyber security, through to safeguarding and compliance, we provide digital security solutions perfectly designed to suit any requirement.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Skypurple Cloudskypurple.cloudHQ: Oxford, United KingdomReported employees: 11-50 | Oxford, United Kingdom | 11-50 | Exact match | 9 contacts → |
“skyPurple Cloud | Smarter Cloud.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Defensityonedefensityone.comHQ: Milton Keynes, United KingdomReported employees: 11-50 | Milton Keynes, United Kingdom | 11-50 | Exact match | 9 contacts → |
“DefensityOne is a cybersecurity solutions provider specializing in proactive threat detection, risk management, and digital defense services.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Cyscalecyscale.comHQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 8 contacts → |
“Cyscale is a cloud-native security solution that constantly monitors your cloud environment.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  Threat Protectthreatprotect.co.ukHQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 7 contacts → |
“Threat Protect is a vendor-agnostic cybersecurity, compliance and AI governance partner based in London, working with organisations across finance, legal, energy, pharma…” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Panther Security Systems LTDpanthersecurity.co.ukHQ: Colchester, United KingdomReported employees: 11-50 | Colchester, United Kingdom | 11-50 | Exact match | 6 contacts → |
“Panther Security was established over 30 years ago with a vision to build the leading independent security company in East Anglia, North and East London.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Squire Alarmssquirealarms.co.uk HQ: Leicester, United KingdomReported employees: 1-10 | Leicester, United Kingdom | 1-10 | Exact match | 6 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 18 |  Stratastratasecurity.co.ukHQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 5 contacts → |
“Automate the boring.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  CM Securitycmsecurity.co.ukHQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 5 contacts → |
“CM Security provides a Managed Service of Cloud Security and Protection combined with Professional Services from specialised professionals who’ll help you implement the right mix…” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Castle Alarms 1981 LTDcastlealarms.com HQ: Kendal, United KingdomReported employees: 11-50 | Kendal, United Kingdom | 11-50 | Exact match | 5 contacts → |
“CASTLE ALARMS 1981 LIMITED is a fire and security company based out of MILLENNIUM HOUSE, KENDAL, United Kingdom.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  Cyberalarmcyber-alarm.comHQ: Surrey, United KingdomReported employees: 1-10 | Surrey, United Kingdom | 1-10 | Exact match | 4 contacts → |
“CyberAlarm is an intuitive, cloud-based, AI-driven cyber security solution that protects your and your clients’ businesses – without over complication and high costs.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  Kit365kit365.co.ukHQ: Leicester, United KingdomReported employees: 1-10 | Leicester, United Kingdom | 1-10 | Exact match | 4 contacts → |
“KIT365 is a cybersecurity company based in the city of Leicester.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  Black Swan Cyber Security Solutionsblackswancyber.co.ukHQ: Chesterfield, United KingdomReported employees: 1-10 | Chesterfield, United Kingdom | 1-10 | Exact match | 3 contacts → |
“We help organisations and businesses to stay secure and compliant with customised cyber security packages tailored to their needs.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  Wendu By Cloudplexowendu.ioHQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 2 contacts → |
“Cloud security and management is for everyone.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  Venus Cloud LTDvenuscloud.comHQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 2 contacts → |
“Our experience leads your business to success We have specialised in internet security and scalable cloud architecture since 2011.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 76 company matches
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SaaS security companies: dataset insights
September 29, 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
76 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 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 76 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 29, 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 SaaS security companies?
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 SaaS security companies did RevenueBase find based in the United Kingdom?
The saved snapshot records 76 matching company records, 5,674 tracked contacts and 2,806 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 29, 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
SaaS security companies by geography
- SaaS security companies based in New York, United States
- SaaS security companies based in Australia
- SaaS security companies based in Brazil
- SaaS security companies based in Canada
- SaaS security companies based in France
- SaaS security companies based in Germany
- SaaS security companies based in India
- SaaS security companies based in Israel
- SaaS security companies based in the United States
Cite this list
RevenueBase Data Team. Top 25 SaaS security companies based in the United Kingdom. Snapshot: September 29, 2026. https://revenuebase.ai/companies/saas-security-companies/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
- SaaS security companies based in New York, United States
- SaaS security companies based in Australia
- SaaS security companies based in Brazil
- SaaS security companies based in Canada
- SaaS security companies based in France
- SaaS security companies based in Germany
Company intelligence · public preview
Top 25 SaaS security companies based in the United Kingdom
RevenueBase records 76 matching company records for SaaS security companies based in the United Kingdom, with 5,674 tracked contacts and 2,806 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 29, 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 SaaS security companies 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 | Sophossophos.com HQ: Abingdon, United KingdomReported employees: 5,001-10,000 | Abingdon, United Kingdom | 5,001-10,000 | Exact match | 4,925 contacts → |
“Sophos is a cybersecurity leader defending organizations globally with an AI-driven platform and expert-led services.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | H&m Security Services Limitedhmsecurityservices.co.uk HQ: Woodford Green, United KingdomReported employees: 51-200 | Woodford Green, United Kingdom | 51-200 | Exact match | 78 contacts → |
“We are an SIA Approved Contractor, specializing in Manned Guarding and CCTV solutions.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Universal Support Services Group Ussg LTDussgl.co.uk HQ: Manchester, United KingdomReported employees: 201-500 | Manchester, United Kingdom | 201-500 | Exact match | 70 contacts → |
“USSG holds SIA ACS-approved contractor status for the provision of Security Guarding Services in the heart of Manchester, renowned for its professional security services…” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Telesofttelesoft-technologies.com HQ: Blandford, United KingdomReported employees: 51-200 | Blandford, United Kingdom | 51-200 | Exact match | 68 contacts → |
“The organisations that run our world face relentless complexity and evolving threats.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Vambrace Cybersecurityvambrace.co.uk HQ: Leeds, United KingdomReported employees: 11-50 | Leeds, United Kingdom | 11-50 | Exact match | 24 contacts → |
“Whatever you supply, design, build, manufacture, or grow, its excelling at it that has got your business to where it is today.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Clearswiftclearswift.com HQ: Berkshire, United KingdomReported employees: 201-500 | Berkshire, United Kingdom | 201-500 | Exact match | 19 contacts → |
“Why Clearswift?” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Threat Intelligence Bureau LTDthreatintelligencebureau.com HQ: Chelmsford, United KingdomReported employees: 201-500 | Chelmsford, United Kingdom | 201-500 | Exact match | 18 contacts → |
“Organisation focused on Cloud and Security” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Cloudsecurecloudsecure.ltd HQ: Cheltenham, United KingdomReported employees: 11-50 | Cheltenham, United Kingdom | 11-50 | Exact match | 14 contacts → |
“CloudSecure delivers secure software and cloud systems for security-critical environments.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | OLS Oliver LAW Security LTDolsltd.net HQ: Doncaster, United KingdomReported employees: 11-50 | Doncaster, United Kingdom | 11-50 | Exact match | 11 contacts → |
“OLS are a UK based company specialising in transitioning customers to cloud based security solutions.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Defenxdefenx.com HQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 10 contacts → |
“Defenx is an IT company that has an extensive background in providing businesses with cloud based security solutions and support for their digital infrastructure.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Xentraxentra.co.uk HQ: Leeds, United KingdomReported employees: 11-50 | Leeds, United Kingdom | 11-50 | Exact match | 10 contacts → |
“From cyber security, through to safeguarding and compliance, we provide digital security solutions perfectly designed to suit any requirement.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Skypurple Cloudskypurple.cloud HQ: Oxford, United KingdomReported employees: 11-50 | Oxford, United Kingdom | 11-50 | Exact match | 9 contacts → |
“skyPurple Cloud | Smarter Cloud.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Defensityonedefensityone.com HQ: Milton Keynes, United KingdomReported employees: 11-50 | Milton Keynes, United Kingdom | 11-50 | Exact match | 9 contacts → |
“DefensityOne is a cybersecurity solutions provider specializing in proactive threat detection, risk management, and digital defense services.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Cyscalecyscale.com HQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 8 contacts → |
“Cyscale is a cloud-native security solution that constantly monitors your cloud environment.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Threat Protectthreatprotect.co.uk HQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 7 contacts → |
“Threat Protect is a vendor-agnostic cybersecurity, compliance and AI governance partner based in London, working with organisations across finance, legal, energy, pharma…” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Panther Security Systems LTDpanthersecurity.co.uk HQ: Colchester, United KingdomReported employees: 11-50 | Colchester, United Kingdom | 11-50 | Exact match | 6 contacts → |
“Panther Security was established over 30 years ago with a vision to build the leading independent security company in East Anglia, North and East London.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Squire Alarmssquirealarms.co.uk HQ: Leicester, United KingdomReported employees: 1-10 | Leicester, United Kingdom | 1-10 | Exact match | 6 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 18 | Stratastratasecurity.co.uk HQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 5 contacts → |
“Automate the boring.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | CM Securitycmsecurity.co.uk HQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 5 contacts → |
“CM Security provides a Managed Service of Cloud Security and Protection combined with Professional Services from specialised professionals who’ll help you implement the right mix…” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Castle Alarms 1981 LTDcastlealarms.com HQ: Kendal, United KingdomReported employees: 11-50 | Kendal, United Kingdom | 11-50 | Exact match | 5 contacts → |
“CASTLE ALARMS 1981 LIMITED is a fire and security company based out of MILLENNIUM HOUSE, KENDAL, United Kingdom.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Cyberalarmcyber-alarm.com HQ: Surrey, United KingdomReported employees: 1-10 | Surrey, United Kingdom | 1-10 | Exact match | 4 contacts → |
“CyberAlarm is an intuitive, cloud-based, AI-driven cyber security solution that protects your and your clients’ businesses – without over complication and high costs.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Kit365kit365.co.uk HQ: Leicester, United KingdomReported employees: 1-10 | Leicester, United Kingdom | 1-10 | Exact match | 4 contacts → |
“KIT365 is a cybersecurity company based in the city of Leicester.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Black Swan Cyber Security Solutionsblackswancyber.co.uk HQ: Chesterfield, United KingdomReported employees: 1-10 | Chesterfield, United Kingdom | 1-10 | Exact match | 3 contacts → |
“We help organisations and businesses to stay secure and compliant with customised cyber security packages tailored to their needs.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Wendu By Cloudplexowendu.io HQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 2 contacts → |
“Cloud security and management is for everyone.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Venus Cloud LTDvenuscloud.com HQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 2 contacts → |
“Our experience leads your business to success We have specialised in internet security and scalable cloud architecture since 2011.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 76 company matches
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SaaS security companies: dataset insights
September 29, 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
76 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 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 76 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 29, 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 SaaS security companies?
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 SaaS security companies did RevenueBase find based in the United Kingdom?
The saved snapshot records 76 matching company records, 5,674 tracked contacts and 2,806 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 29, 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 SaaS security companies based in the United Kingdom. Snapshot: September 29, 2026. https://revenuebase.ai/companies/saas-security-companies/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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