The Best Vulnerability Scanning & Assessment Services UK
The best UK vulnerability scanning and assessment providers in 2026 range from fully managed, human-verified services to self-service scanning tools. This guide compares 7 providers: Precursor Security, NCC Group, Bridewell, Edgescan, OnSecurity, Intruder, and Bulletproof (WorkNest Secure), labelling clearly which are managed services and which are tools you run yourself.
Seven UK vulnerability scanning and assessment providers compared on the distinction that actually matters: whether a human verifies what the scanner finds, or whether the output lands in your dashboard as a raw list for your team to triage.
We are Precursor Security, and we have ranked ourselves first on this list.
Rather than pretend otherwise, we publish the selection criteria in full, describe every provider fairly, and label plainly which ones are self-service scanning tools and which are managed, human-verified services. We are a managed service: a UK-based, DBS-checked analyst reviews every finding before it reaches you. If a self-service tool with published pricing is what your team actually needs, we say so below.
Seven providers, side by side
| Provider | HQ / ownership | Pricing published | From |
|---|---|---|---|
| 1. Precursor Security Managed service | Leeds, UK. Independent. | Yes | From £300/month |
| 2. NCC Group Managed service | Manchester, UK. Publicly listed (LSE: NCC). | No | On application |
| 3. Bridewell Managed service | Reading, UK. Independent, growth-capital backed. | No | On application |
| 4. Edgescan Platform + human validation | Dublin, Ireland. Independent. | No | On application |
| 5. OnSecurity Platform (scanning + bookable pentest) | Bristol, UK. Independent. | No | Instant quote via platform |
| 6. Intruder Self-service tool (managed add-on available) | London, UK. Independent. | Yes | From $299/month |
| 7. Bulletproof (WorkNest Secure) Hybrid (self-service + managed) | UK. Part of WorkNest Secure (GRC Group), formed May 2026. | No | On application |
Verified against each provider's public website, August 2026. "Not published" means we could not find the rate publicly stated, it does not mean the firm lacks one. "Type" reflects whether the core offering is a self-service tool, a managed service, or a hybrid platform.
The 7 best UK vulnerability
scanning & assessment services in 2026
1. Precursor Security
Precursor holds CREST accreditation for Vulnerability Assessment as part of a triple accreditation covering Penetration Testing, Vulnerability Assessment, and Security Operations Centre services, a combination held by fewer than 70 firms worldwide. We are a managed, human-verified vulnerability assessment service, not a self-service scanner tool: every finding is triaged by a UK-based, DBS-checked analyst before it reaches your report, false positives are removed rather than passed on, and results are prioritised using CVSS and EPSS rather than left as a raw severity list. Continuous external coverage runs through EdgeProtect, our attack surface management platform, and any finding significant enough to warrant exploitation testing can escalate directly into a scoped penetration test with the same team.
Trade-off: A mid-market specialist rather than a global enterprise brand, and the youngest firm on this list.
2. NCC Group
NCC Group runs a Managed Vulnerability Scanning Service (MVSS): a fully managed offering in which NCC Group's own consultants schedule the scans, review the results, remove false positives, and hand back risk-rated findings with a named technical account manager as the point of contact. It sits inside a much larger assessment and advisory practice with global reach, which suits organisations that want scanning delivered by the same firm running their broader assurance work.
Trade-off: Pricing is not published; engagement model and cost are built for enterprise procurement.
3. Bridewell
Bridewell's Vulnerability Management Service is delivered out of its 24/7 Security Operations Centre, giving clients a single tracked view of vulnerabilities across their estate with remediation activity managed centrally. Bridewell is CREST-accredited and pairs the service with a large managed detection and response and incident response practice, which is the natural fit for a buyer who wants scanning output flowing into the same team watching for active exploitation.
Trade-off: Pricing is not published and the delivery model is built around a broader managed security relationship rather than scanning bought on its own.
4. Edgescan
Edgescan runs a full-stack vulnerability management platform combining automated scanning across web, API, and network layers with human validation of findings, positioned by the vendor as false-positive-free. It also offers Penetration Testing as a Service and attack surface management on the same platform. Worth noting for UK buyers: Edgescan is not a UK company, it is headquartered in Dublin, Ireland, though it serves UK clients.
Trade-off: Pricing is not published, and the company is Ireland-headquartered rather than UK-based.
5. OnSecurity
OnSecurity is CREST-accredited and runs a technology-first platform that layers continuous automated scanning of internet-facing assets on top of instant-quote, platform-scheduled human penetration testing. It is a hybrid: the day-to-day scanning is automated and asset-tracked in the portal, and the manual testing is delivered by OnSecurity's own testers when booked. That combination suits a startup or scale-up that wants both without separate procurement processes.
Trade-off: Quotes are generated through the platform rather than published as a rate card.
6. Intruder
Intruder is a self-service SaaS vulnerability scanning and attack surface management tool: you configure it, it scans continuously, and CVSS-scored results land in your dashboard. It is a tool, not a managed service, by default, there is no analyst triaging your findings unless you buy the optional Vanguard add-on, which layers human-augmented analysis and continuous testing on top of the core scanning product. Pricing is published, which is unusual for this list.
Trade-off: The base product is unmanaged: your team does the triage unless you pay extra for Vanguard.
7. Bulletproof (WorkNest Secure)
Bulletproof offers both managed and unmanaged vulnerability assessment scanning, so a buyer can choose a self-service tool or hand triage to Bulletproof's team, alongside a broader compliance practice including Cyber Essentials certification. In 2024 Bulletproof was acquired by the GRC Group alongside Pentest People, and in May 2026 the two brands combined into WorkNest Secure, so buyers evaluating "Bulletproof" today are evaluating a brand mid-transition.
Trade-off: A generalist breadth play rather than a scanning specialist, currently absorbing a brand change, and pricing is not published.
How we ranked them
Six criteria, each something a buyer should care about and can verify without taking anyone's word for it. Weighting is ours, the underlying facts are checkable. See our full scanning vs testing guide for the compliance detail behind these criteria.
Whether a person reviews every finding and strips out false positives before it reaches you, or whether the scanner output lands in your dashboard as-is for your team to triage.
Company accreditation for Vulnerability Assessment specifically, checkable in the CREST directory. Not every provider on this list holds it, and we say so where it applies.
Whether scanning runs continuously against your live asset inventory, or is scheduled as a periodic snapshot.
Whether findings are ranked using CVSS alongside EPSS and known-exploited-vulnerability data, so remediation effort goes to what attackers are actually using, not a flat severity list.
Whether the report tells your team what to fix and in what order, and whether verification that the fix worked is included or sold back as a separate engagement.
Whether a serious finding can move straight into a scoped, manually exploited pentest with the same provider, or whether that is a separate procurement process with a different firm.
Red flags when choosing
a scanning provider
Whichever provider you choose, including us, walk away if you see these.
A scan sold as an "assessment" with no human triage
The words scan, assessment, and audit get used interchangeably by vendors. Ask directly whether a person reviews and triages your findings, or whether you are receiving raw scanner output with a different label on it.
Unmanaged tooling that dumps 1,000 findings on your team
A tool with no triage layer will flag every theoretical issue it can detect, including duplicates and false positives. If nobody is filtering that list before it reaches you, the tool has created work rather than removed risk.
No prioritisation beyond a raw severity score
CVSS alone tells you how bad a vulnerability could be in theory. Without EPSS or known-exploited-vulnerability data layered on top, your team has no way to tell which of the hundred "High" findings attackers are actually using this month.
No remediation guidance
A list of CVE identifiers is not a fix. Ask for a sample report and check whether it tells you what to do next, not just what was found.
No retest provision
If verifying that a fix actually worked is a separately priced engagement, your remediation evidence for auditors and insurers costs double, and you have no independent confirmation the issue is closed.
A scanner that cannot pivot to a pentest when it finds something real
When a scan turns up a serious exposure, you want a fast path to manual exploitation testing to confirm real-world impact, with the same provider who already has the context. If that means starting a fresh procurement process with a different firm, you have lost time you did not need to lose.
UK vulnerability scanning prices in 2026
Self-service scanning tools publish tiered pricing from around $299 per month for a small footprint. Managed, human-verified vulnerability assessment services typically run £300 to £800 per month for a mid-market organisation, scaling with asset count and reporting frequency. Enterprise scanning delivered as a fully managed service through a larger consultancy is generally priced on application. Penetration testing sits above all of these, from £2,500 per engagement, for when exploitation testing rather than assessment is what you need.
Full scanning vs pentesting cost breakdownCompare us against anyone on this list.
Managed vulnerability assessment from £300 a month, human-verified before it reaches you. Continuous coverage via EdgeProtect. A fast path to penetration testing when a finding warrants it.
Choosing a vulnerability scanning provider
The questions buyers ask most when comparing UK scanning and assessment services.
Managed vulnerability scanning for a UK mid-market organisation typically starts from £300 to £800 per month depending on asset count and reporting frequency. Self-service scanning tools like Intruder publish tiered pricing from around $299 per month. Enterprise scanning delivered as a fully managed service through firms like NCC Group or Bridewell is generally priced on application. Precursor publishes its managed vulnerability scanning rate from £300 per month.
A vulnerability scan is raw automated tool output: a list of known CVEs and misconfigurations flagged by software, often including false positives that need manual triage. A vulnerability assessment takes that scan output and adds human review: false positives are removed, findings are prioritised by real-world risk, and remediation guidance is written for your context. A penetration test goes further still, with human testers actively exploiting weaknesses to demonstrate real business impact. Scanning is breadth, assessment is triaged breadth, and testing is depth.
Continuously or at minimum monthly for your full external and internal asset inventory. PCI DSS requires quarterly external ASV scanning at minimum, and most compliance frameworks and cyber insurers now expect ongoing scanning evidence rather than a single annual snapshot. Scanning should run alongside, not instead of, annual or post-change penetration testing.
Automated scanning alone is rarely enough. It is essential for catching known CVEs and missing patches at scale, but it cannot remove its own false positives, cannot prioritise findings by genuine business risk without a human reviewing context, and cannot find logic flaws or chained exploits the way a manual penetration test can. Most UK organisations with compliance obligations need continuous automated scanning, human-verified assessment of what it finds, and periodic penetration testing on top.
The leading UK vulnerability scanning and assessment providers in 2026 are Precursor Security, NCC Group, Bridewell, Edgescan, OnSecurity, Intruder, and Bulletproof (now part of WorkNest Secure). They range from fully managed, human-verified assessment services to self-service scanning tools, so the right choice depends on whether you want triage handled for you or want to run the tool yourself.