Company lists · Data refreshed September 2026
Top 25 Software development security companies based in the United Kingdom
RevenueBase identified 148 company matches for software development security companies associated with the United Kingdom as of September 2026 and tracks 1,619 professional contacts across them, including 467 with verified work emails. London is the largest hub.
This list covers company matches for software development 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 software development security companies based in the United Kingdom
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 267 contacts → | ||||
Exact match “PortSwigger is a global leader in the creation of software tools for security testing of web applications.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 2 | 80 contacts → | ||||
Exact match “Computer Software analysis, desing, and development.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 3 | 64 contacts → | ||||
Exact match “We engineer secure, AI-driven software that helps businesses build, transform, and scale with confidence.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 4 | 61 contacts → | ||||
Exact match “MDSec are a UK based consultancy with a passion for information security.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 5 | 57 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 6 | 57 contacts → | ||||
Exact match “We deliver services in Cybersecurity, Application Security and DevOps and are trusted by some of the world’s leading brands to maximise the value of their security investments and…” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 7 | 42 contacts → | ||||
Exact match “CoreTech is a specialist cyber security company whose people are motivated by the desire to deliver exceptional capabilities coupled with a real sense of mission.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 8 | 39 contacts → | ||||
Exact match “DWS is a global enterprise software services company delivering development, testing, and software supply chain security solutions.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 9 | 32 contacts → | ||||
Exact match “Detect, enforce and measure Since 1985, PRQA has pioneered software coding governance in the automotive, aerospace, transport, finance, medical device and energy industries.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 10 | 20 contacts → | ||||
Exact match “From 2003 to 2023 the borwell team delivered software and IT solutions to the UK MoD and to UK Government departments, which were 'secure by design'.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 11 | 15 contacts → | ||||
Exact match “is an ISO 9001:2015 and ISO/IEC 27001:2022 certified, DPIIT-recognized cybersecurity company delivering structured External Vulnerability Assessment & Penetration Testing (VAPT)…” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 12 | 14 contacts → | ||||
Exact match “Demand more from your AI & Data Security partner.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 13 | 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 | |||||
| 14 | 14 contacts → | ||||
Exact match “Modux was founded in 2008, initially delivering research, software development and consultancy services within the UK defence sector.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 15 | 13 contacts → | ||||
Exact match “Since more than 15 years Emenda has provided the tools and expertise to help developers efficiently build software that’s more reliable and more secure.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 16 | 11 contacts → | ||||
Exact match “CyTAL exists to help developers, manufacturers and their customers to improve the security and resilience of products and systems.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 17 | 11 contacts → | ||||
Exact match “At Mobius Binary we care about your reputation and the loss that could result from violating your digital boundaries.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 18 | 9 contacts → | ||||
Exact match “Transpose Software develops secure, high-performance application software for corporate clients and other software houses.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 19 | 8 contacts → | ||||
Exact match “Cytix is the AppSec layer that focuses testing where it matters.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 20 | 8 contacts → | ||||
Exact match “Building the best Cyber Security company you've never heard of.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 21 | 7 contacts → | ||||
Exact match “Klaatu IT Security is an IT security consultancy and developer.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 22 | 6 contacts → | ||||
Exact match “Appsecco Inc.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 23 | 6 contacts → | ||||
Exact match “Welcome to DevNack - Your trusted partner for bespoke software solutions.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 24 | 6 contacts → | ||||
Exact match “Secure Debug: Your Full-Spectrum Cybersecurity Guardian!” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 25 | 5 contacts → | ||||
Exact match “We’re a Cyber Security consultancy that specialise in DevSecOps, bringing together development and security expertise.” 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 “software development 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 148 software development security companies based in the United Kingdom
See the full list, filter by size, metro and specialty, and access 467 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Software development 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 148 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 “software development 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 467 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.
Software development security companies 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 “software development security companies”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many software development security companies are there based in the United Kingdom?
RevenueBase identified 148 company matches for software development 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?
Portswigger tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city has the most software development security companies?
London leads with 70 company records, followed by Manchester (6) and Leeds (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 467 professional contacts with verified work emails tracked across these 148 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 148 software development security companies based in the United Kingdom. Start with a free account, no credit card.
Download this list →Related lists
Software development security companies by geography
- Software development security companies based in London, United Kingdom
- Software development security companies based in San Francisco, United States
- Software development security companies based in Australia
- Software development security companies based in Brazil
- Software development security companies based in Canada
- Software development security companies based in France
- Software development security companies based in Germany
- Software development security companies based in India
- Software development security companies based in Israel
- Software development security companies based in Italy
- Software development security companies based in the Netherlands
- Software development security companies based in Sweden
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
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- Lists A-Z
- New lists
- Software development security companies based in London, United Kingdom
- Software development security companies based in San Francisco, United States
- Software development security companies based in Australia
- Software development security companies based in Brazil
- Software development security companies based in Canada
- Software development security companies based in France
Company intelligence · public preview
Top 25 software development 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 148 matching company records for software development security companies based in the United Kingdom, with 1,619 tracked contacts and 467 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 software development 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 |  Portswiggerportswigger.netHQ: Knutsford, United KingdomReported employees: 51-200 | Knutsford, United Kingdom | 51-200 | Exact match | 267 contacts → |
“PortSwigger is a global leader in the creation of software tools for security testing of web applications.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Readingbferris.co.uk HQ: Reading, United KingdomReported employees: Not recorded | Reading, United Kingdom | Not recorded | Exact match | 80 contacts → |
“Computer Software analysis, desing, and development.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  Aecor Digitalaecordigital.comHQ: Chiswick, United KingdomReported employees: 51-200 | Chiswick, United Kingdom | 51-200 | Exact match | 64 contacts → |
“We engineer secure, AI-driven software that helps businesses build, transform, and scale with confidence.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  MDSECmdsec.co.ukHQ: Macclesfield, United KingdomReported employees: 11-50 | Macclesfield, United Kingdom | 11-50 | Exact match | 61 contacts → |
“MDSec are a UK based consultancy with a passion for information security.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Secureflagsecureflag.comHQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 57 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 6 |  Riversaferiversafe.co.ukHQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 57 contacts → |
“We deliver services in Cybersecurity, Application Security and DevOps and are trusted by some of the world’s leading brands to maximise the value of their security investments and…” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Coretech Securitycoretechsec.comHQ: Cheltenham, United KingdomReported employees: 51-200 | Cheltenham, United Kingdom | 51-200 | Exact match | 42 contacts → |
“CoreTech is a specialist cyber security company whose people are motivated by the desire to deliver exceptional capabilities coupled with a real sense of mission.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | DWSdws-global.com HQ: Marlow, United KingdomReported employees: 11-50 | Marlow, United Kingdom | 11-50 | Exact match | 39 contacts → |
“DWS is a global enterprise software services company delivering development, testing, and software supply chain security solutions.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  PRQAprqa.comHQ: Walton On Thames, United KingdomReported employees: 51-200 | Walton On Thames, United Kingdom | 51-200 | Exact match | 32 contacts → |
“Detect, enforce and measure Since 1985, PRQA has pioneered software coding governance in the automotive, aerospace, transport, finance, medical device and energy industries.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Borwellborwell.comHQ: Great Malvern, United KingdomReported employees: 11-50 | Great Malvern, United Kingdom | 11-50 | Exact match | 20 contacts → |
“From 2003 to 2023 the borwell team delivered software and IT solutions to the UK MoD and to UK Government departments, which were 'secure by design'.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  Eh1-Infotech Cybersecurityeh1infotech.comHQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 15 contacts → |
“is an ISO 9001:2015 and ISO/IEC 27001:2022 certified, DPIIT-recognized cybersecurity company delivering structured External Vulnerability Assessment & Penetration Testing (VAPT)…” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Everycloud AI & Data Securityeverycloud.co.ukHQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 14 contacts → |
“Demand more from your AI & Data Security partner.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  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. | |||||
| 14 |  MODUXmodux.co.ukHQ: Bristol, United KingdomReported employees: 11-50 | Bristol, United Kingdom | 11-50 | Exact match | 14 contacts → |
“Modux was founded in 2008, initially delivering research, software development and consultancy services within the UK defence sector.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Emendaemenda.com HQ: Royal Wootton Bassett, United KingdomReported employees: 11-50 | Royal Wootton Bassett, United Kingdom | 11-50 | Exact match | 13 contacts → |
“Since more than 15 years Emenda has provided the tools and expertise to help developers efficiently build software that’s more reliable and more secure.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  CYTALcytal.co.ukHQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 11 contacts → |
“CyTAL exists to help developers, manufacturers and their customers to improve the security and resilience of products and systems.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Mobius Binarymobiusbinary.comHQ: Bath, United KingdomReported employees: 11-50 | Bath, United Kingdom | 11-50 | Exact match | 11 contacts → |
“At Mobius Binary we care about your reputation and the loss that could result from violating your digital boundaries.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Transpose Software Limitedtranspose.netHQ: Leicester, United KingdomReported employees: 11-50 | Leicester, United Kingdom | 11-50 | Exact match | 9 contacts → |
“Transpose Software develops secure, high-performance application software for corporate clients and other software houses.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  CYTIXcytix.ioHQ: Manchester, United KingdomReported employees: 11-50 | Manchester, United Kingdom | 11-50 | Exact match | 8 contacts → |
“Cytix is the AppSec layer that focuses testing where it matters.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  Coda Securitycodasecurity.co.ukHQ: Leamington Spa, United KingdomReported employees: 11-50 | Leamington Spa, United Kingdom | 11-50 | Exact match | 8 contacts → |
“Building the best Cyber Security company you've never heard of.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  Klaatu IT Security LTDklaatuitsecurity.comHQ: Swindon, United KingdomReported employees: 1-10 | Swindon, United Kingdom | 1-10 | Exact match | 7 contacts → |
“Klaatu IT Security is an IT security consultancy and developer.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  Appseccoappsecco.comHQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 6 contacts → |
“Appsecco Inc.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  Devnackdevnack.comHQ: Edinburgh, United KingdomReported employees: 11-50 | Edinburgh, United Kingdom | 11-50 | Exact match | 6 contacts → |
“Welcome to DevNack - Your trusted partner for bespoke software solutions.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  Secure Debugsecuredebug.comHQ: Cranfield, United KingdomReported employees: 11-50 | Cranfield, United Kingdom | 11-50 | Exact match | 6 contacts → |
“Secure Debug: Your Full-Spectrum Cybersecurity Guardian!” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  Punk Securitypunksecurity.co.ukHQ: Northallerton, United KingdomReported employees: 11-50 | Northallerton, United Kingdom | 11-50 | Exact match | 5 contacts → |
“We’re a Cyber Security consultancy that specialise in DevSecOps, bringing together development and security expertise.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 148 company matches
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Software development 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
148 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 148 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 ↗
Software development security companies by metro
Questions about this company list
What does Exact match mean for software development 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 software development security companies did RevenueBase find based in the United Kingdom?
The saved snapshot records 148 matching company records, 1,619 tracked contacts and 467 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
Software development security companies by geography
- Software development security companies based in London, United Kingdom
- Software development security companies based in San Francisco, United States
- Software development security companies based in Australia
- Software development security companies based in Brazil
- Software development security companies based in Canada
- Software development security companies based in France
- Software development security companies based in Germany
- Software development security companies based in India
- Software development security companies based in Israel
- Software development security companies based in Italy
- Software development security companies based in the Netherlands
- Software development security companies based in Sweden
Cite this list
RevenueBase Data Team. Top 25 software development security companies based in the United Kingdom. Snapshot: September 29, 2026. https://revenuebase.ai/companies/software-development-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
- Software development security companies based in London, United Kingdom
- Software development security companies based in San Francisco, United States
- Software development security companies based in Australia
- Software development security companies based in Brazil
- Software development security companies based in Canada
- Software development security companies based in France
Company intelligence · public preview
Top 25 software development security companies based in the United Kingdom
RevenueBase records 148 matching company records for software development security companies based in the United Kingdom, with 1,619 tracked contacts and 467 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 software development 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 | Portswiggerportswigger.net HQ: Knutsford, United KingdomReported employees: 51-200 | Knutsford, United Kingdom | 51-200 | Exact match | 267 contacts → |
“PortSwigger is a global leader in the creation of software tools for security testing of web applications.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Readingbferris.co.uk HQ: Reading, United KingdomReported employees: Not recorded | Reading, United Kingdom | Not recorded | Exact match | 80 contacts → |
“Computer Software analysis, desing, and development.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Aecor Digitalaecordigital.com HQ: Chiswick, United KingdomReported employees: 51-200 | Chiswick, United Kingdom | 51-200 | Exact match | 64 contacts → |
“We engineer secure, AI-driven software that helps businesses build, transform, and scale with confidence.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | MDSECmdsec.co.uk HQ: Macclesfield, United KingdomReported employees: 11-50 | Macclesfield, United Kingdom | 11-50 | Exact match | 61 contacts → |
“MDSec are a UK based consultancy with a passion for information security.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Secureflagsecureflag.com HQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 57 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 6 | Riversaferiversafe.co.uk HQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 57 contacts → |
“We deliver services in Cybersecurity, Application Security and DevOps and are trusted by some of the world’s leading brands to maximise the value of their security investments and…” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Coretech Securitycoretechsec.com HQ: Cheltenham, United KingdomReported employees: 51-200 | Cheltenham, United Kingdom | 51-200 | Exact match | 42 contacts → |
“CoreTech is a specialist cyber security company whose people are motivated by the desire to deliver exceptional capabilities coupled with a real sense of mission.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | DWSdws-global.com HQ: Marlow, United KingdomReported employees: 11-50 | Marlow, United Kingdom | 11-50 | Exact match | 39 contacts → |
“DWS is a global enterprise software services company delivering development, testing, and software supply chain security solutions.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | PRQAprqa.com HQ: Walton On Thames, United KingdomReported employees: 51-200 | Walton On Thames, United Kingdom | 51-200 | Exact match | 32 contacts → |
“Detect, enforce and measure Since 1985, PRQA has pioneered software coding governance in the automotive, aerospace, transport, finance, medical device and energy industries.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Borwellborwell.com HQ: Great Malvern, United KingdomReported employees: 11-50 | Great Malvern, United Kingdom | 11-50 | Exact match | 20 contacts → |
“From 2003 to 2023 the borwell team delivered software and IT solutions to the UK MoD and to UK Government departments, which were 'secure by design'.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Eh1-Infotech Cybersecurityeh1infotech.com HQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 15 contacts → |
“is an ISO 9001:2015 and ISO/IEC 27001:2022 certified, DPIIT-recognized cybersecurity company delivering structured External Vulnerability Assessment & Penetration Testing (VAPT)…” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Everycloud AI & Data Securityeverycloud.co.uk HQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 14 contacts → |
“Demand more from your AI & Data Security partner.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | 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. | |||||
| 14 | MODUXmodux.co.uk HQ: Bristol, United KingdomReported employees: 11-50 | Bristol, United Kingdom | 11-50 | Exact match | 14 contacts → |
“Modux was founded in 2008, initially delivering research, software development and consultancy services within the UK defence sector.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Emendaemenda.com HQ: Royal Wootton Bassett, United KingdomReported employees: 11-50 | Royal Wootton Bassett, United Kingdom | 11-50 | Exact match | 13 contacts → |
“Since more than 15 years Emenda has provided the tools and expertise to help developers efficiently build software that’s more reliable and more secure.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | CYTALcytal.co.uk HQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 11 contacts → |
“CyTAL exists to help developers, manufacturers and their customers to improve the security and resilience of products and systems.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Mobius Binarymobiusbinary.com HQ: Bath, United KingdomReported employees: 11-50 | Bath, United Kingdom | 11-50 | Exact match | 11 contacts → |
“At Mobius Binary we care about your reputation and the loss that could result from violating your digital boundaries.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Transpose Software Limitedtranspose.net HQ: Leicester, United KingdomReported employees: 11-50 | Leicester, United Kingdom | 11-50 | Exact match | 9 contacts → |
“Transpose Software develops secure, high-performance application software for corporate clients and other software houses.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | CYTIXcytix.io HQ: Manchester, United KingdomReported employees: 11-50 | Manchester, United Kingdom | 11-50 | Exact match | 8 contacts → |
“Cytix is the AppSec layer that focuses testing where it matters.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Coda Securitycodasecurity.co.uk HQ: Leamington Spa, United KingdomReported employees: 11-50 | Leamington Spa, United Kingdom | 11-50 | Exact match | 8 contacts → |
“Building the best Cyber Security company you've never heard of.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Klaatu IT Security LTDklaatuitsecurity.com HQ: Swindon, United KingdomReported employees: 1-10 | Swindon, United Kingdom | 1-10 | Exact match | 7 contacts → |
“Klaatu IT Security is an IT security consultancy and developer.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Appseccoappsecco.com HQ: London, United KingdomReported employees: 1-10 | London, United Kingdom | 1-10 | Exact match | 6 contacts → |
“Appsecco Inc.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Devnackdevnack.com HQ: Edinburgh, United KingdomReported employees: 11-50 | Edinburgh, United Kingdom | 11-50 | Exact match | 6 contacts → |
“Welcome to DevNack - Your trusted partner for bespoke software solutions.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Secure Debugsecuredebug.com HQ: Cranfield, United KingdomReported employees: 11-50 | Cranfield, United Kingdom | 11-50 | Exact match | 6 contacts → |
“Secure Debug: Your Full-Spectrum Cybersecurity Guardian!” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Punk Securitypunksecurity.co.uk HQ: Northallerton, United KingdomReported employees: 11-50 | Northallerton, United Kingdom | 11-50 | Exact match | 5 contacts → |
“We’re a Cyber Security consultancy that specialise in DevSecOps, bringing together development and security expertise.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 148 company matches
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Software development 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
148 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 148 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 ↗
Software development security companies by metro
Questions about this company list
What does Exact match mean for software development 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 software development security companies did RevenueBase find based in the United Kingdom?
The saved snapshot records 148 matching company records, 1,619 tracked contacts and 467 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
Software development security companies by geography
- Software development security companies based in London, United Kingdom
- Software development security companies based in San Francisco, United States
- Software development security companies based in Australia
- Software development security companies based in Brazil
- Software development security companies based in Canada
- Software development security companies based in France
- Software development security companies based in Germany
- Software development security companies based in India
- Software development security companies based in Israel
- Software development security companies based in Italy
- Software development security companies based in the Netherlands
- Software development security companies based in Sweden
Cite this list
RevenueBase Data Team. Top 25 software development security companies based in the United Kingdom. Snapshot: September 29, 2026. https://revenuebase.ai/companies/software-development-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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- Software development security companies based in Canada
- Software development security companies based in France