Company lists · Data refreshed September 2026
Top 25 Website security monitoring services based in the United Kingdom
RevenueBase identified 92 company matches for website security monitoring services associated with the United Kingdom as of September 2026 and tracks 567 professional contacts across them, including 240 with verified work emails. London is the largest hub.
This list covers company matches for website security monitoring services 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 website security monitoring services based in the United Kingdom
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 99 contacts → | ||||
Exact match “AppCheck is a Complete Enterprise Security Testing Solution that provides up to the minute vulnerability coverage for your entire estate.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 2 | 61 contacts → | ||||
Exact match “Intruder's continuous exposure management platform helps security, IT, and engineering teams stop breaches before they start.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 3 | 32 contacts → | ||||
Exact match “Defense.com is transforming the way businesses manage cyber security by allowing them to easily identify, prioritise and remediate threats.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 4 | 29 contacts → | ||||
Exact match “CYJAX is an award-winning technology company and provider of digital threat intelligence services to international corporations, law enforcement agencies and the public sector.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 5 | 20 contacts → | ||||
Exact match “Secure Purple is a leading cyber security and digital safety firm that provides innovative solutions and services to help organisations and individuals stay protected in the…” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 6 | 19 contacts → | ||||
Exact match “Halo I.S is not just another cybersecurity organization based in the UK; we're a testament to evolution and client-centric innovation.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 7 | 10 contacts → | ||||
Exact match “RapidSpike believes everyone expects & has the right to, fast, safe & reliable online experiences, and we know great websites improve conversions, loyalty & brand.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 8 | 9 contacts → | ||||
Exact match “Our world-class Managed SOC provides comprehensive vulnerability management, security monitoring, and penetration testing presented through a single dashboard.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 9 | 9 contacts → | ||||
Exact match “At Equilibrium Security, we’re a team of certified Cyber Security experts dedicated to keeping your business safe.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 10 | 7 contacts → | ||||
Exact match “StatusCake is the uptime monitoring leader, with 5-second check rates that catch issues before your users do.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 11 | 5 contacts → | ||||
Exact match “From the little niggles to the large networks It’s the little things that are vital whether you have a website, online accounts or any type of web-based infrastructure.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 12 | 5 contacts → | ||||
Exact match “Robotalp is an all-in-one solution that checks all your websites or services every 1 minute and notifies you when an error occurs.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 13 | 4 contacts → | ||||
Exact match “We are a leading cybersecurity company dedicated to protecting your digital assets and ensuring the utmost security for your organization.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 14 | 4 contacts → | ||||
Exact match “Businesses today are faced with a multitude of IT security threats that can have a serious impact on their bottom line.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 15 | 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 | |||||
| 16 | 3 contacts → | ||||
Exact match “Grove unlocks business success by defending our customers with the most advanced cybersecurity solutions in the market place today.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 17 | 3 contacts → | ||||
Exact match “Clear Loop Security is a Vulnerability Management Solution vendor and a forward-looking cyber and information security consultancy, focused on the real challenges of protecting…” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 18 | 2 contacts → | ||||
Exact match “At Threatproof, our mission is to redefine cybersecurity for businesses of all sizes.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 19 | 2 contacts → | ||||
Exact match “We believe that effective cybersecurity is within the reach of every organisation.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 20 | 2 contacts → | ||||
Exact match “Unlock the full potential of your website with Observer's real-time monitoring, in-depth performance analytics, and actionable optimization insights.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 21 | 2 contacts → | ||||
Exact match “Cybersecurity isn’t just about technology-it’s about trust.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 22 | 1 contacts → | ||||
Exact match “Websecurify is a web application security company.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 23 | 1 contacts → | ||||
Exact match “A local managed service provider with enterprise tools that protect, detect and respond to any issues on your computer and include the ability to roll back a ransomware attack…” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 24 | 1 contacts → | ||||
Exact match “Tim Nash Provides WordPress Security services to help keep your organisation safe and secure online” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 25 | 1 contacts → | ||||
Exact match “In today's tech-driven world, where computers, smartphones, the internet, and social media are integral to our daily lives and business operations, securing these digital…” 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 “website security monitoring services”. 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 92 website security monitoring services based in the United Kingdom
See the full list, filter by size, metro and specialty, and access 240 tracked professional contacts with verified work emails. Direct dials are available where recorded.
Free signup · no credit card
Website security monitoring services 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 92 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 “website security monitoring services” 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 240 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.
Website security monitoring services 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 “website security monitoring services”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many website security monitoring services are there based in the United Kingdom?
RevenueBase identified 92 company matches for website security monitoring services 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?
Appcheck LTD tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city has the most website security monitoring services?
London leads with 33 company records, followed by Leeds (4) and Birmingham (3).
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 240 professional contacts with verified work emails tracked across these 92 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 92 website security monitoring services based in the United Kingdom. Start with a free account, no credit card.
Download this list →Related lists
Website security monitoring services by geography
- Website security monitoring services based in London, United Kingdom
- Website security monitoring services based in Australia
- Website security monitoring services based in Brazil
- Website security monitoring services based in Canada
- Website security monitoring services based in France
- Website security monitoring services based in Germany
- Website security monitoring services based in India
- Website security monitoring services based in the Netherlands
- Website security monitoring services 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
- Website security monitoring services based in London, United Kingdom
- Website security monitoring services based in Australia
- Website security monitoring services based in Brazil
- Website security monitoring services based in Canada
- Website security monitoring services based in France
- Website security monitoring services based in Germany
Company intelligence · public preview
Top 25 website security monitoring services 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 92 matching company records for website security monitoring services based in the United Kingdom, with 567 tracked contacts and 240 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 website security monitoring services 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 |  Appcheck LTDappcheck-ng.comHQ: Leeds, United KingdomReported employees: 51-200 | Leeds, United Kingdom | 51-200 | Exact match | 99 contacts → |
“AppCheck is a Complete Enterprise Security Testing Solution that provides up to the minute vulnerability coverage for your entire estate.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Intruderintruder.ioHQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 61 contacts → |
“Intruder's continuous exposure management platform helps security, IT, and engineering teams stop breaches before they start.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  defense.comdefense.comHQ: Stevenage, United KingdomReported employees: 51-200 | Stevenage, United Kingdom | 51-200 | Exact match | 32 contacts → |
“Defense.com is transforming the way businesses manage cyber security by allowing them to easily identify, prioritise and remediate threats.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  CYJAXcyjax.comHQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 29 contacts → |
“CYJAX is an award-winning technology company and provider of digital threat intelligence services to international corporations, law enforcement agencies and the public sector.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Secure Purplesecurepurple.comHQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 20 contacts → |
“Secure Purple is a leading cyber security and digital safety firm that provides innovative solutions and services to help organisations and individuals stay protected in the…” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  Halo I.Shalo-is.co.ukHQ: Leeds, United KingdomReported employees: 11-50 | Leeds, United Kingdom | 11-50 | Exact match | 19 contacts → |
“Halo I.S is not just another cybersecurity organization based in the UK; we're a testament to evolution and client-centric innovation.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Rapidspikerapidspike.comHQ: Leeds, United KingdomReported employees: 11-50 | Leeds, United Kingdom | 11-50 | Exact match | 10 contacts → |
“RapidSpike believes everyone expects & has the right to, fast, safe & reliable online experiences, and we know great websites improve conversions, loyalty & brand.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  Foxtech Cyberfoxtechcyber.comHQ: Winchester, United KingdomReported employees: 1-10 | Winchester, United Kingdom | 1-10 | Exact match | 9 contacts → |
“Our world-class Managed SOC provides comprehensive vulnerability management, security monitoring, and penetration testing presented through a single dashboard.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Equilibrium Securityequilibrium-security.co.ukHQ: Birmingham, United KingdomReported employees: 11-50 | Birmingham, United Kingdom | 11-50 | Exact match | 9 contacts → |
“At Equilibrium Security, we’re a team of certified Cyber Security experts dedicated to keeping your business safe.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Statuscake Uptime Monitoringstatuscake.comHQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 7 contacts → |
“StatusCake is the uptime monitoring leader, with 5-second check rates that catch issues before your users do.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  Bell ICTbellict.comHQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 5 contacts → |
“From the little niggles to the large networks It’s the little things that are vital whether you have a website, online accounts or any type of web-based infrastructure.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Robotalprobotalp.com HQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 5 contacts → |
“Robotalp is an all-in-one solution that checks all your websites or services every 1 minute and notifies you when an error occurs.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Cyberniticscybernitics.comHQ: Glasgow, United KingdomReported employees: 1-10 | Glasgow, United Kingdom | 1-10 | Exact match | 4 contacts → |
“We are a leading cybersecurity company dedicated to protecting your digital assets and ensuring the utmost security for your organization.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Apoc ITapocit.comHQ: Liverpool, United KingdomReported employees: 1-10 | Liverpool, United Kingdom | 1-10 | Exact match | 4 contacts → |
“Businesses today are faced with a multitude of IT security threats that can have a serious impact on their bottom line.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  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. | |||||
| 16 | Grove Groupgroveis.com HQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 3 contacts → |
“Grove unlocks business success by defending our customers with the most advanced cybersecurity solutions in the market place today.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Clear Loop Securityclearloopsecurity.comHQ: Leeds, United KingdomReported employees: 1-10 | Leeds, United Kingdom | 1-10 | Exact match | 3 contacts → |
“Clear Loop Security is a Vulnerability Management Solution vendor and a forward-looking cyber and information security consultancy, focused on the real challenges of protecting…” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Threatproofthreatproof.comHQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 2 contacts → |
“At Threatproof, our mission is to redefine cybersecurity for businesses of all sizes.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Secmaticssecmatics.comHQ: Cambridge, United KingdomReported employees: 11-50 | Cambridge, United Kingdom | 11-50 | Exact match | 2 contacts → |
“We believe that effective cybersecurity is within the reach of every organisation.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  Observersiteobserver.coHQ: Bristol, United KingdomReported employees: 1-10 | Bristol, United Kingdom | 1-10 | Exact match | 2 contacts → |
“Unlock the full potential of your website with Observer's real-time monitoring, in-depth performance analytics, and actionable optimization insights.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  Secure Chain Technology Groupsecurechaingroup.comHQ: Chesterfield, United KingdomReported employees: 1-10 | Chesterfield, United Kingdom | 1-10 | Exact match | 2 contacts → |
“Cybersecurity isn’t just about technology-it’s about trust.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  Websecurifywebsecurify.comHQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 1 contacts → |
“Websecurify is a web application security company.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  Fortify247fortify247.netHQ: West Runton, United KingdomReported employees: 1-10 | West Runton, United Kingdom | 1-10 | Exact match | 1 contacts → |
“A local managed service provider with enterprise tools that protect, detect and respond to any issues on your computer and include the ability to roll back a ransomware attack…” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | TIM Nashtimnash.co.uk HQ: Ilkely, United KingdomReported employees: 1-10 | Ilkely, United Kingdom | 1-10 | Exact match | 1 contacts → |
“Tim Nash Provides WordPress Security services to help keep your organisation safe and secure online” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  Conssecconssec.comHQ: Oxford, United KingdomReported employees: 1-10 | Oxford, United Kingdom | 1-10 | Exact match | 1 contacts → |
“In today's tech-driven world, where computers, smartphones, the internet, and social media are integral to our daily lives and business operations, securing these digital…” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 92 company matches
Build a targeted audience, find relevant contacts and export available records to your workflow.
Free signup · 500 credits · limited free results
Website security monitoring services: 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
92 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 92 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 ↗
Website security monitoring services by metro
Questions about this company list
What does Exact match mean for website security monitoring services?
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 website security monitoring services did RevenueBase find based in the United Kingdom?
The saved snapshot records 92 matching company records, 567 tracked contacts and 240 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
Website security monitoring services by geography
- Website security monitoring services based in London, United Kingdom
- Website security monitoring services based in Australia
- Website security monitoring services based in Brazil
- Website security monitoring services based in Canada
- Website security monitoring services based in France
- Website security monitoring services based in Germany
- Website security monitoring services based in India
- Website security monitoring services based in the Netherlands
- Website security monitoring services based in the United States
Cite this list
RevenueBase Data Team. Top 25 website security monitoring services based in the United Kingdom. Snapshot: September 29, 2026. https://revenuebase.ai/companies/website-security-monitoring-services/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
- Website security monitoring services based in London, United Kingdom
- Website security monitoring services based in Australia
- Website security monitoring services based in Brazil
- Website security monitoring services based in Canada
- Website security monitoring services based in France
- Website security monitoring services based in Germany
Company intelligence · public preview
Top 25 website security monitoring services based in the United Kingdom
RevenueBase records 92 matching company records for website security monitoring services based in the United Kingdom, with 567 tracked contacts and 240 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 website security monitoring services 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 | Appcheck LTDappcheck-ng.com HQ: Leeds, United KingdomReported employees: 51-200 | Leeds, United Kingdom | 51-200 | Exact match | 99 contacts → |
“AppCheck is a Complete Enterprise Security Testing Solution that provides up to the minute vulnerability coverage for your entire estate.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Intruderintruder.io HQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 61 contacts → |
“Intruder's continuous exposure management platform helps security, IT, and engineering teams stop breaches before they start.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | defense.comdefense.com HQ: Stevenage, United KingdomReported employees: 51-200 | Stevenage, United Kingdom | 51-200 | Exact match | 32 contacts → |
“Defense.com is transforming the way businesses manage cyber security by allowing them to easily identify, prioritise and remediate threats.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | CYJAXcyjax.com HQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 29 contacts → |
“CYJAX is an award-winning technology company and provider of digital threat intelligence services to international corporations, law enforcement agencies and the public sector.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Secure Purplesecurepurple.com HQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 20 contacts → |
“Secure Purple is a leading cyber security and digital safety firm that provides innovative solutions and services to help organisations and individuals stay protected in the…” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Halo I.Shalo-is.co.uk HQ: Leeds, United KingdomReported employees: 11-50 | Leeds, United Kingdom | 11-50 | Exact match | 19 contacts → |
“Halo I.S is not just another cybersecurity organization based in the UK; we're a testament to evolution and client-centric innovation.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Rapidspikerapidspike.com HQ: Leeds, United KingdomReported employees: 11-50 | Leeds, United Kingdom | 11-50 | Exact match | 10 contacts → |
“RapidSpike believes everyone expects & has the right to, fast, safe & reliable online experiences, and we know great websites improve conversions, loyalty & brand.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Foxtech Cyberfoxtechcyber.com HQ: Winchester, United KingdomReported employees: 1-10 | Winchester, United Kingdom | 1-10 | Exact match | 9 contacts → |
“Our world-class Managed SOC provides comprehensive vulnerability management, security monitoring, and penetration testing presented through a single dashboard.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Equilibrium Securityequilibrium-security.co.uk HQ: Birmingham, United KingdomReported employees: 11-50 | Birmingham, United Kingdom | 11-50 | Exact match | 9 contacts → |
“At Equilibrium Security, we’re a team of certified Cyber Security experts dedicated to keeping your business safe.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Statuscake Uptime Monitoringstatuscake.com HQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 7 contacts → |
“StatusCake is the uptime monitoring leader, with 5-second check rates that catch issues before your users do.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Bell ICTbellict.com HQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 5 contacts → |
“From the little niggles to the large networks It’s the little things that are vital whether you have a website, online accounts or any type of web-based infrastructure.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Robotalprobotalp.com HQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 5 contacts → |
“Robotalp is an all-in-one solution that checks all your websites or services every 1 minute and notifies you when an error occurs.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Cyberniticscybernitics.com HQ: Glasgow, United KingdomReported employees: 1-10 | Glasgow, United Kingdom | 1-10 | Exact match | 4 contacts → |
“We are a leading cybersecurity company dedicated to protecting your digital assets and ensuring the utmost security for your organization.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Apoc ITapocit.com HQ: Liverpool, United KingdomReported employees: 1-10 | Liverpool, United Kingdom | 1-10 | Exact match | 4 contacts → |
“Businesses today are faced with a multitude of IT security threats that can have a serious impact on their bottom line.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | 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. | |||||
| 16 | Grove Groupgroveis.com HQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 3 contacts → |
“Grove unlocks business success by defending our customers with the most advanced cybersecurity solutions in the market place today.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Clear Loop Securityclearloopsecurity.com HQ: Leeds, United KingdomReported employees: 1-10 | Leeds, United Kingdom | 1-10 | Exact match | 3 contacts → |
“Clear Loop Security is a Vulnerability Management Solution vendor and a forward-looking cyber and information security consultancy, focused on the real challenges of protecting…” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Threatproofthreatproof.com HQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 2 contacts → |
“At Threatproof, our mission is to redefine cybersecurity for businesses of all sizes.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Secmaticssecmatics.com HQ: Cambridge, United KingdomReported employees: 11-50 | Cambridge, United Kingdom | 11-50 | Exact match | 2 contacts → |
“We believe that effective cybersecurity is within the reach of every organisation.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Observersiteobserver.co HQ: Bristol, United KingdomReported employees: 1-10 | Bristol, United Kingdom | 1-10 | Exact match | 2 contacts → |
“Unlock the full potential of your website with Observer's real-time monitoring, in-depth performance analytics, and actionable optimization insights.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Secure Chain Technology Groupsecurechaingroup.com HQ: Chesterfield, United KingdomReported employees: 1-10 | Chesterfield, United Kingdom | 1-10 | Exact match | 2 contacts → |
“Cybersecurity isn’t just about technology-it’s about trust.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Websecurifywebsecurify.com HQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 1 contacts → |
“Websecurify is a web application security company.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Fortify247fortify247.net HQ: West Runton, United KingdomReported employees: 1-10 | West Runton, United Kingdom | 1-10 | Exact match | 1 contacts → |
“A local managed service provider with enterprise tools that protect, detect and respond to any issues on your computer and include the ability to roll back a ransomware attack…” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | TIM Nashtimnash.co.uk HQ: Ilkely, United KingdomReported employees: 1-10 | Ilkely, United Kingdom | 1-10 | Exact match | 1 contacts → |
“Tim Nash Provides WordPress Security services to help keep your organisation safe and secure online” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Conssecconssec.com HQ: Oxford, United KingdomReported employees: 1-10 | Oxford, United Kingdom | 1-10 | Exact match | 1 contacts → |
“In today's tech-driven world, where computers, smartphones, the internet, and social media are integral to our daily lives and business operations, securing these digital…” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 92 company matches
Build a targeted audience, find relevant contacts and export available records to your workflow.
Free signup · 500 credits · limited free results
Website security monitoring services: 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
92 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 92 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 ↗
Website security monitoring services by metro
Questions about this company list
What does Exact match mean for website security monitoring services?
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 website security monitoring services did RevenueBase find based in the United Kingdom?
The saved snapshot records 92 matching company records, 567 tracked contacts and 240 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
Website security monitoring services by geography
- Website security monitoring services based in London, United Kingdom
- Website security monitoring services based in Australia
- Website security monitoring services based in Brazil
- Website security monitoring services based in Canada
- Website security monitoring services based in France
- Website security monitoring services based in Germany
- Website security monitoring services based in India
- Website security monitoring services based in the Netherlands
- Website security monitoring services based in the United States
Cite this list
RevenueBase Data Team. Top 25 website security monitoring services based in the United Kingdom. Snapshot: September 29, 2026. https://revenuebase.ai/companies/website-security-monitoring-services/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
- Website security monitoring services based in London, United Kingdom
- Website security monitoring services based in Australia
- Website security monitoring services based in Brazil
- Website security monitoring services based in Canada
- Website security monitoring services based in France
- Website security monitoring services based in Germany