Vulnerability management vendors in the United Kingdom
14 of the 113 vulnerability management vendors we list are based in the United Kingdom. 2 are owned by another company and 12 are private. The oldest, ThreatSpike Red, was founded in 2011. Of the 7 companies here with staff numbers, the largest is WorkNest (201-500 staff).
Companies focused on vulnerability management in the United Kingdom
2 companies| Company | Based in | Founded | Size | Ownership |
|---|---|---|---|---|
 RoboShadow RoboShadow provides daily vulnerability scanning and automated remediation for internal and external networks. | London, United Kingdom | 2017 | Private | |
 Intruder Intruder provides continuous vulnerability scanning and attack surface management for cloud and web assets. | London, United Kingdom | 2015 | Private |
Also active in vulnerability management
12 companies| Company | Based in | Founded | Size | Ownership |
|---|---|---|---|---|
 WorkNest CREST and CHECK-accredited UK penetration testing and managed security provider formed in 2026 from Pentest People, Bulletproof, and Target Defense, with CREST STAR/TLPT-FS capability and the GuardNest vulnerability management platform. | Chester, United Kingdom | 2014 | 201-500 staff | Owned by Inflexion |
 CyberLab Cardiff-based CREST and CHECK-accredited cyber security company delivering penetration testing, red teaming, and OT security assessments as part of the Chess Group. | Cardiff, United Kingdom | 2020 | 51-200 staff | Owned by Chess |
 OnSecurity CREST-accredited, platform-driven penetration testing vendor in Bristol offering AI-augmented testing with rapid self-service booking for over 400 global customers. | Bristol, United Kingdom | 2018 | 51-200 staff | Private |
 ThreatSpike Red London-based cybersecurity firm offering unlimited, fixed-price penetration testing and red teaming services with ISO 27001 certification and a unique subscription model. | London, United Kingdom | 2011 | 51-200 staff | Private |
 Aardwolf Security Boutique UK penetration testing consultancy in Milton Keynes specialising in manual, expert-led security assessments across web applications, APIs, cloud, and mobile platforms. | Milton Keynes, United Kingdom | 2015 | 1-10 staff | Private |
 Sencode CREST-accredited North East England penetration testing specialist founded in 2019, offering accessible and transparent security testing with free retests and a strong focus on social engineering. | Stockton-on-Tees, United Kingdom | 2019 | 1-10 staff | Private |
 Solusec CREST-accredited UK penetration testing consultancy based in Shropshire, delivering web application, API, infrastructure, cloud, mobile, and AI/LLM testing. A small specialist team, with a retest included in every engagement. | Albrighton, United Kingdom | 2021 | 1-10 staff | Private |
 Automiq Automiq is an automation strategy and transformation partner. | London, United Kingdom | 2025 | Private | |
 CybaVerse CybaVerse provides a unified cyber security operations platform called CybaOps. | Portsmouth, United Kingdom | 2018 | Private | |
 Cydome Provides cybersecurity protection and risk management for maritime vessels, offshore facilities and ports. | London, United Kingdom | Private | ||
 Revelion Revelion provides an autonomous AI pentester that simulates attacks to validate exploitability across estates. | London, United Kingdom | 2026 | Private | |
 Trent AI Provides an AI security engineer that finds and fixes software risks using coding agents. | London, United Kingdom | 2025 | Private |
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