Rolling out a Security Information and Event Management (SIEM) system isn’t something you just plug in and walk away from – it’s a layered process that takes planning, experience, and the right technical know-how. With more businesses in the UK focusing on proactive threat detection and real-time security monitoring, working with the right SIEM implementation partner can make or break the process.
In this article, we’re taking a closer look at companies in the UK that specialise in SIEM setup and support. Whether you’re new to the world of security tooling or upgrading from a legacy system, it helps to know who’s out there and what kind of help they actually offer – without the marketing fluff.
1. A-listware
A-listware focuses on delivering cybersecurity services that support businesses in protecting their digital infrastructure. Operating across Europe, including the UK, with delivery hubs serving a global client base, they design and implement security systems that align with international compliance standards. Their team includes engineers, DevSecOps professionals, and certified ethical hackers who work together to address various security risks and build secure, reliable frameworks tailored to client needs.
Their services span different industries including finance, healthcare, telecom, e-commerce, and manufacturing. A-listware offers flexible options – from single assessments like penetration testing to long-term managed security operations, including SIEM deployment and tuning. They approach cybersecurity not only as a technical challenge but also as a strategic component of a business’s overall risk management framework.
Key Highlights:
- Teams based in Europe with global service delivery
- Compliance-driven approach (ISO 27001, SOC 2, HIPAA, GDPR)
- Supports clients across several sectors
- Flexible service model for both one-time and managed needs
Services:
- SIEM deployment and tuning
- Penetration testing
- Application security and code auditing
- DDoS protection
- Compliance audits and risk alignment
Contacts:
- Website: a-listware.com
- Email: info@a-listware.com
- LinkedIn: www.linkedin.com/a-listware
- Facebook: www.facebook.com/alistware
- Address: St. Leonards-On-Sea, TN37 7TA, UK
- Phone: +44 (0)142 439 01 40
2. Apto Solutions
Apto Solutions helps businesses build reliable security and operational monitoring systems by focusing on clarity, strategy, and measurable outcomes. They guide clients through the complexity of modern tooling environments, ensuring that security and IT monitoring efforts directly support business objectives. Their process includes understanding business goals, designing appropriate monitoring solutions, and operating them in a way that remains flexible and scalable.
They specialize in SIEM augmentation and long-term maturity planning, offering services that cover the full lifecycle of a SIEM platform. From risk assessment and architecture design to deployment and ongoing support, Apto works with clients in cloud, on-premises, or hybrid setups. Their approach is particularly suited for organizations looking to build or optimize their detection and incident response capabilities.
Key Highlights:
- Focuses on full SIEM lifecycle: discover, design, deploy, operate
- Experience with complex cloud and hybrid environments
- Emphasizes sustainable and adaptable monitoring models
- Works across multiple industries with varied needs
Services:
- SIEM consultancy and implementation
- Threat modeling and risk assessment
- Monitoring system design and build
- SIEM platform optimization and support
- Managed threat detection
Contacts:
- Website: www.aptosolutions.co.uk
- Twitter: x.com/aptosolutionsuk
- LinkedIn: www.linkedin.com/company/apto-solutions-ltd
- Address: Apto Solutions, Pembroke House, 15 Pembroke Rd, Clifton, Bristol, BS8 3BA
- Phone: +44(0)845 226 3351
3. Bulletproof
Bulletproof delivers a fully managed SIEM service designed to monitor and protect IT environments around the clock. Their in-house security operations center operates 24/7, combining automated threat detection with human expertise. Bulletproof’s services are designed to work across various environments, including cloud, on-prem, and hybrid systems, offering visibility into endpoints, networks, and applications.
The company integrates threat intelligence and machine learning into its platform to help detect and prioritize threats effectively. They also provide actionable remediation advice with each alert, making it easier for internal teams to respond quickly. Bulletproof emphasizes seamless onboarding, scalable pricing, and the ability to work as an extension of existing security teams.
Key Highlights:
- 24/7 monitoring from a UK-based SOC
- Combines machine learning with analyst insights
- Covers diverse asset types, including IoT and OT
- Focuses on practical remediation support
Services:
- Managed SIEM deployment and tuning
- Threat intelligence integration
- Log collection and analysis
- Alert prioritization and remediation support
- Compliance monitoring
Contacts:
- Website: www.bulletproof.co.uk
- E-mail: contact@bulletproof.co.uk
- LinkedIn: www.linkedin.com/company/bulletproof-cyber-limited
- Address: Unit H Gateway 100 Whittle Way Stevenage Herts SG1 2FP
- Phone: 01438 500 093
4. Cardonet
Cardonet offers managed SIEM services designed to collect, analyze, and correlate data from various IT sources to detect potential threats. They handle the operational demands of running SIEM platforms, combining advanced tools like machine learning and behavioral analysis with around-the-clock human oversight. Their team monitors log data from multiple sources and helps organizations make sense of alerts without overwhelming their internal staff.
Their services are well-suited for businesses that prefer to focus on core activities while leaving threat detection and incident response to an external provider. Cardonet also supports compliance and reporting needs and can scale their services as client environments grow or become more complex. Their approach is vendor-neutral and emphasizes technical expertise without locking clients into specific solutions.
Key Highlights:
- Offers 24/7 monitoring and expert-led threat detection
- Uses AI, behavioral analysis, and threat intelligence
- Helps reduce alert fatigue through automation
- Supports a wide range of reporting and compliance needs
- Flexible, vendor-neutral approach to deployment
Services:
- 24/7 Log Monitoring and Threat Detection
- Incident Response and Alert Management
- Compliance Reporting and Dashboards
- Log Ingestion and Data Aggregation
- Behavior Analysis and Automation Tools
Contacts:
- Website: www.cardonet.co.uk
- E-mail: hello@cardonet.co.uk
- LinkedIn: www.linkedin.com/company/cardonet
- Twitter: x.com/cardonetit
- Facebook: www.facebook.com/Cardonet
- Address: 7 Stean Street, London, UK, E8 4ED
- Phone: +44 203 034 2244
5. CloudTech24
CloudTech24 offers managed SIEM services that combine tools and human expertise to monitor, detect, and respond to cyber threats. Their solution is intended for organizations that prefer outsourcing their SIEM operations due to internal resource constraints. CloudTech24 provides around-the-clock monitoring and is staffed by experienced SOC analysts who help clients improve threat detection and manage incidents efficiently.
They support businesses in tailoring SIEM services to fit specific goals and budgets, offering consultations to assess needs and determine appropriate solutions. Their services emphasize proactive monitoring and compliance support, with the flexibility to integrate with cloud platforms such as Microsoft Azure Sentinel.
Key Highlights:
- Offers 24/7/365 threat monitoring
- Strong focus on consultation and tailoring services
- Works with Microsoft Azure Sentinel
- Security team with over a decade of experience
Services:
- Managed SIEM operations
- Threat detection and response
- Event management and analysis
- Compliance and reporting tools
- Cloud SIEM integration
Contacts:
- Website: cloudtech24.com
- E-mail: info@cloudtech24.com
- Facebook: www.facebook.com/CloudTech24
- Twitter: x.com/CloudTech24
- LinkedIn: www.linkedin.com/company/cloudtech24
- Address: 36 – 37 Albert Embankment, London, SE1 7TL
- Phone: +44 (0) 207 099 0740
6. Cybanetix
Cybanetix specializes in providing SIEM solutions with a focus on automation and modern analytics, particularly for small and medium-sized businesses. Their services combine traditional SIEM capabilities with advanced threat detection and response tools. Cybanetix emphasizes reducing detection time and cost through enriched data feeds and pre-defined use cases.
The company partners with technology providers like Exabeam, Microsoft Sentinel, and Splunk to offer a range of deployment options. Their UK-based security operations center handles 24/7 monitoring and threat response. They also provide compliance support and professional services such as training, configuration, and optimization of SIEM platforms.
Key Highlights:
- Targets SMBs with scalable solutions
- Collaborates with major SIEM technology vendors
- Offers automation-focused threat detection
- UK-based SOC with experienced staff
Services:
- SIEM deployment and customization
- Fully managed SOC operations
- Compliance support (PCI DSS, ISO 27001, GDPR)
- Breach detection and incident response
- Professional services and user training
Contacts:
- Website: cybanetix.com
- E-mail: contact@cybanetix.com
- LinkedIn: www.linkedin.com/company/cybanetix
- Twitter: x.com/Cybanetix
- Address: The Coade Level 9 98 Vauxhall Walk London SE11 5EL
- Phone: 020 8396 7442
7. DRAS Group
DRAS Group provides tailored SIEM services that support real-time threat detection, network monitoring, and compliance. Their focus is on integrating advanced technologies that allow businesses to gain visibility across their IT infrastructure and respond to threats effectively. Each deployment is designed to align with specific business requirements and compliance frameworks.
Their services span the full lifecycle from deployment to ongoing management. DRAS Group also offers support with log analytics, compliance reporting, and optimization of existing systems. They prioritize helping organizations reduce incident response times while maintaining a clear understanding of their overall security posture.
Key Highlights:
- Customized SIEM deployment for different network types
- Real-time monitoring with alerting and response strategies
- Emphasis on compliance and reporting tools
- Continuous support and system refinement
Services:
- SIEM platform deployment and integration
- Log data aggregation and analysis
- Real-time threat monitoring
- Incident response planning
- Compliance reporting and documentation
Contacts:
- Website: drasgroup.co.uk
- E-mail: info@drasgroup.co.uk
- Facebook: www.facebook.com/people/DRAS-Consulting-Ltd
- LinkedIn: www.linkedin.com/company/dras-consulting-limited
- Address: DRAS Consulting Ltd. 81 Poppy Close Stoke Gifford Bristol BS34 8AY United Kingdom
8. DXC Technology
DXC Technology provides SIEM implementation and cyber defense services in the UK, focusing on helping organizations improve their threat detection, incident response, and security monitoring. They’ve worked with large-scale organizations, including those migrating from on-premises infrastructure to multi-region cloud environments. Their approach involves integrating various AWS-native tools such as CloudTrail and CloudWatch alongside third-party platforms like ArcSight to enable log collection, governance, and automation.
In a recent case, DXC supported a transportation company in securely shifting workloads to AWS while managing connectivity between multiple global regions. By implementing a centralized SIEM system and streamlining network architecture through SD-WAN, DXC helped the organization gain better visibility and control over its security posture. Their services are backed by a global network of security operations centers and partnerships with government agencies and technology vendors.
Key Highlights:
- Focuses on large-scale, multi-region SIEM deployments
- Uses AWS-native tools and third-party integrations like ArcSight
- Supports cloud migrations with secure and efficient connectivity
- Offers continuous threat monitoring and incident response
- Leverages global SOC infrastructure and threat intelligence
Services:
- Cyber Defense Advisory
- Threat Detection and Response
- Managed SIEM Solutions
- SIEM Use Case Design and Log Integration
- 24/7 SOC Monitoring and Incident Response
Contacts:
- Website: dxc.com
- LinkedIn: www.linkedin.com/company/dxctechnology
- Instagram: www.instagram.com/DxcTechnology
- Phone: 1-703-972-7000
9. LRQA
LRQA delivers managed SIEM services with a focus on using real-time monitoring and advanced analytics to improve threat detection and response. Their approach integrates people, processes, and technology to help organizations better prepare for and react to cybersecurity threats. They support both cloud-native and on-premise SIEM platforms and align their services with recognized security frameworks.
The team at LRQA includes specialists with a broad set of industry certifications and experience in implementing change management processes for network and security tools. They make use of centralized logging and dashboard tools to help clients gain visibility across complex environments. Compliance, reporting, and integration with existing security programs are key parts of their offering.
Key Highlights:
- Supports both cloud and on-premise SIEM setups
- Certified experts with global service delivery
- Focused on real-time detection and response
- Integrated with frameworks like MITRE ATT&CK
- Recognized by CREST and other cybersecurity bodies
Services:
- Managed SIEM Monitoring and Alerting
- SIEM Platform Integration and Support
- Real-Time Threat Visibility and Response
- Compliance Management and Reporting
- Security Framework Mapping and Dashboards
Contacts:
- Website: www.lrqa.com
- Twitter: x.com/lrqa
- LinkedIn: www.linkedin.com/company/lrqa
- Address: 1, Trinity Park, Bickenhill Lane, Birmingham B37 7ES.
- Phone: +44 121 817 4000
10. Nomios
Nomios provides managed SIEM services focused on continuous monitoring and threat response across networks and endpoints. Their team includes certified engineers and SOC analysts who handle the technical challenges of real-time security event analysis. With an emphasis on reducing the operational burden on internal teams, Nomios takes on both the monitoring and investigation of alerts to help filter out false positives and focus on actual risks.
They use a mix of threat intelligence, analytics, and flexible service models to meet different business needs. Whether a company is dealing with limited in-house resources or growing cybersecurity requirements, Nomios tailors its services to support compliance, reduce risks, and enhance threat visibility. They offer scalable solutions that can adjust with a business’s changing environment.
Key Highlights:
- Provides 24/7 network and endpoint monitoring
- Focuses on reducing alert noise and false positives
- Offers flexibility in deployment and scale
- Combines threat intelligence with dedicated expertise
- Helps streamline compliance efforts
Services:
- Managed SIEM Monitoring and Detection
- Real-Time Alert Analysis and Investigation
- SIEM Platform Deployment and Management
- Threat Intelligence Integration
- Reporting and Compliance Support
Contacts:
- Website: www.nomios.co.uk
- LinkedIn: www.linkedin.com/company/nomios-uk-i
- Twitter: x.com/nomiosgroup
- Facebook: www.facebook.com/NomiosGroup
- Address: 2 Elmwood, Chineham Park RG24 8WG Basingstoke United Kingdom
- Phone: +44 (0)1256 805225
11. Syscom (SYSLLC UK)
Syscom offers SIEM solutions that help organizations identify threats and compliance issues before they disrupt operations. Their platform combines Security Information Management (SIM) with Security Event Management (SEM) to deliver real-time monitoring, analytics, and alerting. Their focus is on making it easier for security teams to handle complex threat environments using automation and AI-driven tools.
Their SIEM services include capabilities such as behavior analysis, log aggregation, and forensic investigations. They provide centralized platforms that collect data from multiple systems and generate alerts based on risk levels. Their open architecture allows businesses to scale and tailor the solution to their existing infrastructure and needs.
Key Highlights:
- Combines SIM and SEM for comprehensive threat coverage
- Uses AI and UEBA for advanced detection
- Supports compliance and audit requirements
- Modular architecture for flexible deployment
- Focused on proactive threat management
Services:
- Real-Time Monitoring and Threat Recognition
- AI-Powered Threat Detection
- Compliance and Regulatory Auditing
- Log Management and Forensic Analysis
- Behavior Analysis and Dashboard Reporting
Contacts:
- Website: sysllc.co.uk
- E-mail: sales@sysllc.com
- Twitter: x.com/sysllcUK
- Facebook: www.facebook.com/syscomUK
- LinkedIn: www.linkedin.com/company/sysllc
- Instagram: www.instagram.com/syscom_UK
- Address: Office 114,The Square 6-9 The Square, Stockley Park, Uxbridge, Middlesex UB11 1FW
- Phone: +44 7404 919 156
12. RiverSafe
RiverSafe works with organizations to implement, optimize, and manage SIEM platforms across cloud, hybrid, and on-prem environments. Their services cover everything from initial platform selection and deployment to health checks and ongoing management. They specialize in platforms such as Microsoft Sentinel, Exabeam, Splunk, and others, and take a vendor-agnostic approach to tailor their solutions.
Their team provides guidance on SIEM strategy, supports migration efforts, and helps integrate detection use cases into broader security operations. RiverSafe is also involved in related services like SOAR, threat intelligence, and application security. They emphasize a collaborative working style, ensuring their clients can get value from their platforms while keeping up with evolving threats.
Key Highlights:
- Experience with multiple SIEM vendors and platforms
- Offers SIEM consolidation and transformation
- Supports full cloud and hybrid migrations
- Provides expert-led strategy and deployment
- Emphasizes ongoing optimization and platform health
Services:
- SIEM Strategy, Deployment, and Optimization
- Cloud Migration and Integration
- SIEM Health Checks and Performance Tuning
- Managed SIEM and 24/7 Monitoring
- Threat Intelligence and Use Case Development
- Support for SOAR and Application Security Platforms
Contacts:
- Website: riversafe.co.uk
- E-mail: enquiries@riversafe.co.uk
- LinkedIn: www.linkedin.com/company/riversafe
- Address: RiverSafe, Sierra Quebec Bravo 77 Marsh Wall London, E14 9SH
- Phone: +44 (0) 203 633 2577
13. RedMosquito
RedMosquito provides managed SIEM services aimed at improving threat visibility and streamlining how businesses handle cyber threats. Their solution is built to give full network oversight without the need to hire additional staff, making it more accessible for small and medium-sized businesses. By integrating their SIEM with existing security tools, they help companies detect, log, and act on suspicious activity in real time. The setup process is kept straightforward, and once deployed, RedMosquito’s analysts monitor the environment 24/7 from a central operations center.
The platform allows clients to ingest logs from multiple sources, access detailed reports, and manage threats from a single interface. Their services also include access to threat intelligence, support for compliance reporting, and features for incident response. Businesses can choose to take a more active role or let RedMosquito’s team manage the day-to-day monitoring and response. The same security platform they offer to clients is also used internally to protect their own infrastructure, adding an extra layer of reliability to their service.
Key Highlights:
- 24/7 SOC monitoring and response
- Integrates with existing tools without extra purchases
- Supports compliance reporting
- Helps manage and reduce alert noise
- Same platform used internally for their own protection
Services:
- Log ingestion from multiple sources
- Threat intelligence and hunting
- Incident detection and response
- Compliance-focused reporting and dashboards
- Security auditing and alert management
- Threat management and intel repository
Contacts:
- Website: www.redmosquito.co.uk
- E-mail: enquiries@redmosquito.co.uk
- Facebook: www.facebook.com/redmosquitoltd
- Twitter: x.com/redmosquitoltd
- LinkedIn: www.linkedin.com/company/redmosquito-limited
- Address: 21-23 Panorama Business Village, Glasgow G33 4EN.
- Phone: 0141 348 7950
14. The Final Step
The Final Step delivers SIEM as a managed service, with a focus on helping London-based businesses monitor and respond to cyber threats more effectively. They begin each engagement by assessing the client’s environment to better understand specific risks and requirements. Their team then implements a tailored SIEM solution that integrates with existing systems and provides real-time monitoring once active. From there, they continue to support the solution through active monitoring and incident handling.
Their process includes a mix of automated and manual responses to events, backed by AI and machine learning to help detect complex threats. The Final Step also places importance on simplifying regulatory compliance and offers reporting tools to make it easier for businesses to demonstrate their security posture. Their solutions are flexible enough to scale with business growth, making them suitable for both small and expanding organizations.
Key Highlights:
- Starts with assessment and tailored deployment
- Offers both automated and manual incident response
- Uses AI and machine learning for enhanced detection
- Helps simplify compliance and reporting
- Designed to scale with business needs
Services:
- SIEM system assessment and planning
- Implementation and integration with existing infrastructure
- Real-time monitoring of networks and devices
- Incident detection and response
- Compliance support and centralized reporting
- Ongoing support post-deployment
Contacts:
- Website: www.thefinalstep.co.uk
- E-mail: contact@thefinalstep.co.uk
- Facebook: www.facebook.com/thefinalstepit
- Twitter: x.com/thefinalstepIT
- Address: 35 Ballards Lane, London, N3 1XW, UK
- Phone: 020 7572 0000
15. Virtual IT
Virtual IT offers SIEM solutions designed to give businesses better control and visibility over their network security. Their platform monitors activity in real time, using automated systems to detect and respond to potential threats. SIEM logs security events, identifies suspicious behavior, and supports investigation efforts with detailed logs and dashboards. Virtual IT combines intelligent software with external threat intelligence sources to keep up with evolving threats.
Their solution also includes tools for improving compliance and making it easier for businesses to understand and explain their security status. The dashboard provides a visual overview of network behavior, while reporting features help organizations respond more confidently to audits and internal reviews. Virtual IT aims to help businesses react quickly to issues, understand the bigger picture of their cybersecurity posture, and reduce exposure to risks without overcomplicating the setup.
Key Highlights:
- Real-time monitoring and automated response
- AI-powered detection of unusual behavior
- Supports compliance with detailed incident reports
- Visual dashboards for easier threat analysis
- Uses external threat intelligence to stay current
Services:
- SIEM platform implementation
- Real-time event detection and response
- Threat intelligence integration
- Security event logging and investigation
- Compliance reporting tools
- Dashboard and visual analytics
Contacts:
- Website: virtualit.cloud
- E-mail: info@virtualit.cloud
- Twitter: x.com/VirtualIT
- Address: London HQ 1st Floor Omni House 252 Belsize Road NW6 4BT
- Phone: +44 (0)20 7644 2800
Conclusion
Choosing the right SIEM provider in the UK isn’t just about ticking boxes on a security checklist – it’s about finding a partner who understands the reality of your environment and can actually help you make sense of the noise. Every company mentioned here approaches SIEM implementation differently, whether it’s through hands-on strategy and deployment, flexible managed services, or AI-backed threat detection. But the common thread is clear: businesses are looking for smarter ways to keep up with threats without burning out their teams or overcomplicating their setups.
In the end, the best fit often comes down to how well a provider’s approach lines up with your day-to-day operations, not just their tech stack. Whether you’re running a growing company with limited internal resources or managing a complex, hybrid environment, there are UK-based providers out there that can meet you where you are. What matters is finding a solution that gives you visibility, keeps your data safe, and doesn’t get in the way of running your business.
