Cybersecurity companies in United Kingdom
70 published companies headquartered in United Kingdom.
Cities
Focus
Mindgard
Adversarial testing and runtime protection for AI models and agents.
Advai
Independent AI stress testing and deployment monitoring.
Safe Intelligence
AI robustness verification and agent validation tools.
AppCheck
Automated web application, API and infrastructure vulnerability testing.
Cyscale
Cloud configuration assessment and contextual security risk remediation.
CloudGuard
Managed cloud security, Microsoft security integration and threat response.
iStorage
Hardware-encrypted storage devices and encrypted cloud storage.
TrustLayer
Email filtering, phishing protection and cloud application security.
Spamhaus Technology
Email threat intelligence, IP reputation and malicious domain data.
Trustd
Mobile threat defence and device security monitoring.
eramba
Open-source governance, risk, compliance and privacy management software.
ISMS.online
Information security management and compliance workflows for ISO 27001.
SureCloud
Integrated cyber risk, compliance, audit and privacy management.
Risk Ledger
Supply-chain security assessments and third-party risk visibility.
Hicomply
Information security management and compliance evidence automation.
CyberSmart
Continuous security checks and compliance support for small businesses.
SecureFlag
Hands-on secure coding and application security training.
Centri
Practical defensive security training for individuals and security teams.
Keepnet Labs
Phishing simulations, security training and human risk management.
MetaCompliance
Security awareness, policy training and human risk management.
usecure
Security awareness training, simulated phishing and policy management.
CybSafe
Human risk assessment and adaptive security awareness programmes.
Bob's Business
Cybersecurity awareness courses, phishing exercises and security culture training.
Red Goat Cyber Security
Cyber crisis exercises, social engineering training and incident simulations.
CovertSwarm
Continuous adversary simulation and offensive security testing.
MDSec
Adversary simulation, red team operations and application security testing.
Pentest Ltd
Manual penetration testing and adversary simulation for infrastructure, applications and cloud environments.
Panaseer
Security control coverage monitoring and asset risk visibility.
RedHunt Labs
Continuous threat exposure management and external asset discovery.
ADL Consulting Limited
ISO 27001 implementation, information security management and GDPR training.
North IT
Web, mobile and API penetration testing, secure code audits and network security testing.
KEW Data
Privacy compliance, data protection impact assessments, data security and virtual CISO services.
SanRa
Human factors security advisory, AI security scanning and compliance consulting.
Collective Security
Cybersecurity consulting, security policy development and incident response planning.
Forensic Control
Penetration testing, digital forensics and Cyber Essentials assessment services.
Cynance
Application security reviews, penetration testing and secure development consulting.
Data Protection People
Data protection consulting, outsourced DPO services, penetration testing and compliance support.
Sencode
Penetration testing for web and mobile applications, networks, APIs and cloud environments.
Cyber Sense
Penetration testing, phishing simulations, Microsoft 365 security assessments and Cyber Essentials support.
Vanguard Cyber Security Ltd
Digital forensics, incident response, compromise assessments and threat intelligence consulting.
CyberWhite
Penetration testing, digital forensics, risk consulting and security compliance support.
Blue Icon IT
Managed IT security, penetration testing, vendor assessments and awareness training.
DefendVista
Cybersecurity readiness assessments and incident planning for transport and logistics businesses.
Pxosys
Enterprise network and security assessments, implementation and cloud consulting.
CyberSecuritiesUK
Cyber Essentials assessments, cybersecurity advice and IT compliance support.
Little Big Tech
Managed IT support, security reviews and cybersecurity services.
Pera Prometheus
Cybersecurity compliance consulting, fractional CISO support, awareness training and penetration testing.
Coreitech
Cybersecurity services, SOC support and Cyber Essentials readiness assistance.
Cyphere
Network, application, cloud and wireless penetration testing services.
Nebulogiq
Managed cybersecurity, incident response and business IT support.
Streym
Penetration testing, managed IT security and network security administration.
Paul Reynolds
Cyber Essentials and ISO 27001 implementation support and AI security assurance.
Identiom Limited
Cybersecurity consulting and business IT advisory.
PocketSIEM
Managed security operations, SIEM integration, and operational technology security.
Intruder
Continuous vulnerability scanning and attack surface monitoring.
SenseOn
Managed detection and response with security telemetry.
My1Login
Workforce single sign-on and authentication.
Red Sift
Email authentication and domain protection.
OutThink
Human risk management and adaptive security training.
Metomic
Discovery and protection of sensitive data in SaaS applications.
Obrela
Managed detection and response and cyber risk management.
BeamSec
Email security and phishing awareness training.
Cynomi
Virtual CISO workflows and security risk assessment.
Castlepoint Systems
Sensitive data discovery and information governance.
Performanta
Managed detection and response.
Trustonic
Hardware-backed device security.
Darktrace
AI-driven detection and response for enterprise networks.
NCC Group
Global pentest, research, and cyber resilience consultancy.
Mimecast
Email security, continuity, and human-risk training.
Sophos
Endpoint, firewall, and managed detection for mid-market.