43 Cyber Security companies in United Kingdom
43 Cyber Security companies in United Kingdom with 50 founders and decision-makers, led by London. 2 verified founder emails. Updated 2026-10-03.
Key findings
- FindMeMail tracks 43 Cyber Security companies in United Kingdom, with 50 founders and decision-makers listed.
- London is the top city, with 27 of them (63%), followed by Edinburgh (2).
- The most common team size is 1-10 employees (86% of companies).
- 40 (93%) were founded in the last three years.
- 1 companies (2%) have at least one verified founder email, 2 verified emails in total.
Breakdown
Top cities
- London: 27 (63%)
- Edinburgh: 2 (5%)
- Manchester: 2 (5%)
- Faversham: 1 (2%)
- Mildenhall: 1 (2%)
- Peterborough: 1 (2%)
- Margate: 1 (2%)
- Covent Garden: 1 (2%)
Team size (employees)
- 1-10: 37 (86%)
- 11-50: 5 (12%)
- 1001-5000: 1 (2%)
Founded (last 10 years)
- 2019: 1 (2%)
- 2025: 30 (70%)
- 2026: 10 (23%)
Recently added Cyber Security companies in United Kingdom
- Nexa Labs Ltd — London, United Kingdom: Nexa Labs is a multi-disciplinary software studio that develops high-utility mobile applications.
- DATACITADEL LTD — London, United Kingdom: DataCitadel provides software and consultancy services for consumer-focused online privacy and data removal from data brokers.
- NEMESEC LTD — Cheltenham, United Kingdom: Nemesec is an information technology consultancy focusing on cybersecurity architecture and risk assessment services.
- GRIDSMITH LTD — Bolton, United Kingdom: GRIDSMITH provides business and domestic software development, IT consulting, and other information technology services.
- PHENOMLAB LTD — London, United Kingdom: Phenomlab provides fractional technology and security leadership, IT consultancy, and cybersecurity and compliance advisory services.
- RESILAGE CONSULTING LTD — Reading, United Kingdom: Resilage Consulting provides cybersecurity consulting, virtual CISO services, incident response, and security auditing for organizations.
- 6X9IS42 UN- LIMITED — Margate, United Kingdom: 6X9IS42 UN- LIMITED provides information technology consultancy, including digital strategy, system integration, cloud, data, and security.
- QARION TECH LIMITED — Manchester, United Kingdom: Qarion Tech provides IT consulting, digital transformation strategy, cloud, cybersecurity, data analytics, and infrastructure services.
- INJECTPROMPT LTD — London, United Kingdom: InjectPrompt is a cybersecurity company that provides AI jailbreak research, an LLM red-teaming SaaS agent, and AI security consulting.
- AUTHNITY LTD — Wolverhampton, United Kingdom: Authnity provides cybersecurity consulting, penetration testing, cloud security auditing, and performance optimization services.
- GRCMANA LIMITED — London, United Kingdom: GRCMana provides governance, risk, and compliance consulting, IT advisory services, and educational resources for GRC professionals.
- CG IT SERVICES LTD — Livingston, United Kingdom: CG IT Services provides IT consulting focused on testing, performance engineering, SRE, and platform engineering.
- JTECH TECHNOLOGIES LTD — London, United Kingdom: JTech Technologies provides IT consulting, infrastructure management, end user support, and data center services for businesses.
- CONNECTS FUTURE LTD — London, United Kingdom: Connects Future provides digital marketing, web development, and IT consulting services for businesses.
- CODESOLACE LTD — Mildenhall, United Kingdom: CodeSolace provides IT consultancy, bespoke software, cloud solutions, cybersecurity, and managed IT support plans for businesses.
- LUMINARA CYBER LIMITED — Edinburgh, United Kingdom: Luminara Cyber provides cybersecurity consultancy with Microsoft 365 security and AI readiness assessments.
- CAPRA CYBER LTD — London, United Kingdom: Capra Cyber provides cybersecurity consulting with digital forensics, incident response, threat intelligence, and cyber resilience services.
- CODEWALL LTD — London, United Kingdom: CodeWall develops an autonomous AI-driven penetration testing platform for continuous offensive security assessments.
- IT360 Pro — Peterborough, United Kingdom: IT360 Pro is an IT company that provides cybersecurity, cloud solutions, network design, and backup & recovery services.
- Zyn Global — London, United Kingdom: Zyn Global is an AI company that provides human-first intelligence platforms that improve secure decision-making.
- Cloudsee — London, United Kingdom: Cloudsee develops surveillance client software for remote monitoring and security camera management.
- Tarian Labs — Wales, United Kingdom: Tarian Labs is a cyber security company that detects, analyzes, monitors, and responds to cyber threats.
- MELSEC SOFTWARE LTD — Manchester, United Kingdom: MELSEC SOFTWARE develops mobile applications and AI-powered utilities focused on call security and scam detection.
- Lynkbee — London, United Kingdom: Lynkbee is a powerful link management platform that combines URL shortening, analytics, and fraud detection in one intuitive dashboard.
- Cysnova — London, United Kingdom: Independent Cybersecurity Advisory for Digital Business
- Cybersee — Edinburgh, United Kingdom: Cybersee is an intelligence platform that offers web monitoring, data breach detection, and phishing takedowns.
- Neon Guard — London, United Kingdom: Neon Guard is an IT company that provides AI‑driven privacy-preserving age verification solutions.
- Callstrike — London, United Kingdom: Callstrike offers a deepfake simulation and training platform to help enterprise security teams counter AI-driven social engineering.
- Trustelis — London, United Kingdom: Enterprise AI commercialization platform enabling organizations to approve and deploy AI with control, structure, and trust
- Luna — London, United Kingdom: SaaS Cybersecurity Platform
Browse and filter all 43 companies
Frequently asked questions
How many Cyber Security companies in United Kingdom are there?
FindMeMail currently lists 43 Cyber Security companies in United Kingdom with at least one founder or decision-maker identified. The count updates daily as new companies are added.
Where are most Cyber Security companies in United Kingdom based?
London (27), Edinburgh (2), Manchester (2).
How do I contact founders of Cyber Security companies in United Kingdom?
2 verified founder emails are available for these companies on FindMeMail. Create a free account to get 50 free reveals, then buy one-time credit packs from $12.
Related reports
- Software companies in United Kingdom (419)
- Artificial Intelligence (AI) companies in United Kingdom (346)
- Cyber Security companies in United States (259)
- Consulting companies in United Kingdom (177)
- Information Technology companies in United Kingdom (164)
- SaaS companies in United Kingdom (160)
- Enterprise Software companies in United Kingdom (143)
- E-Commerce companies in United Kingdom (117)
- Digital Marketing companies in United Kingdom (108)
- Cloud Computing companies in United Kingdom (95)
- Financial Services companies in United Kingdom (89)
- Retail companies in United Kingdom (88)
Methodology: counts include companies in the FindMeMail database with at least one identified founder or decision-maker. Data refreshes automatically as new companies are added.