Managed Security Services (MSSP)
Outsourced security monitoring and incident response
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FORTIFIED IT LTD
Fortified IT provides cyber security and IT support services to organisations across the UK, focusing on SMEs in the education and charity sectors. The company protects clients from cyber and technology risk through strategy and architecture, procurement and implementation, and ongoing support and security solutions, including managed security plans with 24x7 protection alongside infrastructure, connectivity and professional services.
GT Cyber Security
GT Cyber Security provides managed cloud security solutions for businesses, including those with limited IT resources. Based in Basildon, the company offers tiered endpoint protection packages: Small Office Protection for 1-10 devices, Small Business Protection for 11-100 devices, and Business Protection for larger organisations. Services are fully managed, require no configuration, and combine managed services with Avast business security to protect devices, data and applications from cyber threats.
GTP Works
GTP Works delivers hybrid networking, cloud connectivity and managed security services from offices in London and Athens. The company's managed services cover technology incident response, a security service package, and proactive monitoring aimed at business continuity and IT efficiency. Consulting covers design, planning, implementation, maintenance and re-evaluation of IT products and services across the full technology lifecycle. GTP Works was formed by computer scientists and technology consultants and reports more than 150 years of combined team experience, and received recognition at the Cyber Security Awards 2024.
Hampden Consultancy Group
Hampden Consultancy Group (HCG) is a cyber security and risk consultancy delivering governance, risk and compliance, AI security governance, Secure by Design implementation, supply chain assurance, operational resilience and data protection services. HCG serves public sector, critical national infrastructure and private sector organisations, embedding into delivery teams to provide hands-on security leadership aligned to UK regulatory requirements. Services include Data Protection Officer as a Service and programme and project security support. HCG draws on experience from former government and global security roles to provide outcome-driven, practical security guidance.
ICS Cyber Management
This company provides managed cybersecurity solutions, threat detection and compliance services to businesses of all sizes. Its offerings include security operations centre monitoring, virtual chief information security officer services, vulnerability assessments, zero-trust applications, incident response and staff security training across a variety of business sectors.
InfoSecurity People Ltd
InfoSecurity People is a Harrogate-based provider of outsourced IT security services for small and medium-sized enterprises. Its managed security offering covers secure endpoint monitoring, vulnerability scanning, managed encryption, firewall and intrusion detection, wireless intrusion detection and SIEM. Professional services include penetration testing, asset discovery audits, Cyber Essentials, GDPR, ISO 27001 consultancy and PCI DSS QSA support. The company also supplies patch management, cloud archiving and connectivity including broadband and leased lines.
Just Cyber Security
Bolton-based cyber security firm working with UK businesses to prevent cyber-attacks and support them during and after incidents. Services include managed security services, network security monitoring, penetration testing, vulnerability scanning, human cyber risk management and a 24/7 cyber incident response hotline. It runs cyber security awareness workshops and Phish Aware phishing simulation, and deploys DNS filtering, Huntress, Sophos and Lima Charlie. Part of Just Technology Group.
KTM One
KTM One provides AWS and multi-cloud consultancy, DevOps and managed IT services, drawing on more than 15 years of industry experience across cloud, AWS, GCP, Azure and fintech engineering. The company's services span cloud and DevOps engineering, managed cybersecurity, and website and application development, alongside third-party managed IT services covering day-to-day technology operations. KTM One is registered in Hampshire, UK, and also maintains representative offices in Hong Kong and Nepal, reflecting an international client base alongside its UK operations and 15-plus years of combined engineering experience across its founding team.
Kay Services (UK) Limited
Kay Services is a managed security service and IT support provider with over 25 years of experience. It delivers managed IT support, cybersecurity services including audits and Cyber Essentials, cloud migration and Microsoft cloud services, IT consulting with fractional CTO and CISO support, SAP services, network services, remote working solutions, and business continuity and disaster recovery planning. The company offers 24/7 support to organisations across the UK.
Kite Distribution
Kite Distribution is a UK-focused, value-added distributor bringing security and network technologies to the UK channel. The company works with vendors, resellers, managed service providers and systems integrators, offering a distribution engine for building incremental revenue tailored to each partner's business model. Kite Distribution represents vendors including Infoblox, Entrust, Thales, Forescout, CoreView, Hexnode, Hoxhunt and Keysight, and produces a monthly cybersecurity podcast called the Kite Channel Lounge. The company also distributes ThreatDown for organisations addressing advanced threats.
KoelBerry
KoelBerry delivers enterprise IT security, governance and networking services to clients across the UK, Europe and worldwide. Its IT Security service covers threat detection and incident response, vulnerability and penetration testing, endpoint and network security, and security operations centre support. The Governance service builds risk assessment, policy and compliance frameworks, including ISO 27001 alignment and audit readiness. Networking covers network design, infrastructure deployment, performance monitoring and managed network support. KoelBerry also automates firewall policy from rule request through to deployment, and offers app, module, software, web and AI development alongside Microsoft 365 and cloud solutions.
Komcept Solutions
Komcept Solutions designs and implements security technology for law enforcement and government agencies. Its services cover Technical Surveillance Counter Measures (TSCM), including development of proprietary TSCM devices, lawful interception and SIGINT solutions from network access through to recording and analysis, and the Overwatch C2 platform providing real-time situational awareness across borders, infrastructure, perimeters, and smart city environments. The company also provides specialist security training and long-term mentoring for protection personnel.
LONGWALL SECURITY
Longwall Security Ltd provides managed detection, intelligence and response, managed risk and exposure, managed strategy and resilience, consulting, training and enablement, and assessments to organisations seeking to strengthen their cyber security posture. The company serves clients facing evolving cyber threats, skills and capacity challenges, and the need to demonstrate returns on cyber security investment.
LeftBrain
LeftBrain is a cyber security consultancy assessed by the National Cyber Security Centre, providing certification, strategic guidance and ongoing threat monitoring to hybrid, fast-moving teams. Its certification service covers ISO 27001 and Cyber Essentials, helping clients pass due diligence checks when winning new business. LeftBrain also offers an ongoing security strategy service and 24-hour threat detection and response for enterprise clients, alongside a Cyber Security Action Plan that identifies risks and produces a board-ready roadmap within three weeks. The company is led by chartered security professionals.
MSnet Ltd
MSnet provides cybersecurity and IT services to UK businesses, including regulated firms that handle sensitive client data. Its services cover dark web monitoring, endpoint and e-mail protection, internet browsing protection, security awareness training and user credential management, alongside cloud backup and Microsoft 365 support. Offerings are packaged into three tiers - self, managed and professional services - so businesses of all sizes can choose their level of support.
Mondas Consulting Ltd
Mondas Consulting is a Farnborough-based cyber security consultancy providing managed security services including a managed SOC, SIEM, managed detection and response, vulnerability management and dark web monitoring. Its consultants deliver penetration testing, virtual CISO support, vendor risk management and security awareness training, alongside compliance services for ISO 27001, ISO 27701 and ISO 42001. The company serves sectors including pharmaceuticals, insurance, housing associations, government, education and construction.
Morgan Cyber
Morgan Cyber designs and delivers cybersecurity and IT infrastructure for businesses in construction and critical infrastructure sectors, including energy, transport, communications and water. Its services span network infrastructure, technical assurance and governance, risk and compliance work, including guidance on PCI DSS, ISO 27001 and Cyber Essentials. Morgan Cyber selects a limited number of vendor partners to represent, covering cybersecurity and networking products, and reviews that vendor portfolio regularly. The company supports clients through design and delivery of secure infrastructure, on-demand cybersecurity operations, and ongoing review to keep networks, data and operational assets protected from cyber attacks.
NOVA BLUE TECHNOLOGIES
This organisation provides managed cyber security services, continuous monitoring, incident response and strategic advisory solutions. It hardens systems, applications, devices and identities to proactively manage security posture, mitigate cyber attacks and support recovery. The organisation serves founders, operators and investors across defence technology, financial services, aerospace, professional services and manufacturing sectors.
Peritus Cloud Security
Peritus Cloud Security is a St Albans-based provider of cloud and cyber security services and consultancy. Its UK-based consultants deliver managed services covering Microsoft 365 email security, endpoint and network protection, risk-based vulnerability management, penetration testing, incident readiness and ransomware resilience. Working alongside internal IT and security teams, Peritus serves organisations across sectors including finance, education, healthcare, technology, professional services, media and the public sector.
Primelo Cyber
Primelo Cyber is a Milton Keynes-based managed security service provider and IASME-authorised Cyber Essentials Certification Body. It assesses and issues Cyber Essentials and IASME Cyber Assurance certifications directly, and supports clients with ISO 27001, GDPR and PCI-DSS compliance, including gap analysis, DPO-as-a-service and v4.0 transition. CREST and OSCP certified testers perform penetration testing across applications, cloud and networks, alongside 24/7 threat monitoring and staff awareness training.
ProtekCyber
ProtekCyber delivers cyber security services to UK businesses, including a 24/7 SOC as a Service providing managed detection, monitoring and rapid incident response by UK-based analysts. Certified ethical hackers carry out penetration testing and vulnerability assessments supporting compliance such as PCI DSS and ISO 27001. The company also offers cloud security strategy and implementation for AWS, Azure and GCP environments, alongside data protection and compliance services.
RevEng.AI
RevEng.AI is a binary intelligence platform that analyses compiled software at scale without requiring source code, symbols or sandboxing. The platform has analysed more than 1.4 billion binaries and achieves 99.4% malware family attribution precision with a median analysis time of 183 seconds, 42 times faster than manual reverse engineering. Capabilities include agentic malware analysis, semantic code search across binaries, AI decompilation, and native plugins for IDA Pro, Ghidra and Binary Ninja. RevEng.AI is deployed on-premises, in air-gapped environments or within a customer's VPC.
Rubicon IT
Rubicon IT provides managed IT support and cyber security to growing UK businesses, with a focus on design studios, production houses and architecture practices, based in Tadley. The company offers 24/7 threat monitoring, detection and response, cloud and SaaS management, and compliance and security readiness work aligned to frameworks including TPN and Cyber Essentials. Rubicon IT also provides IT consultancy and strategy, technology roadmaps, and vendor-neutral project delivery and procurement. The company has worked with creative businesses for 23 years.
SECURE CYBER SOLUTIONS
Secure Cyber Solutions provides complete cyber security packages to public sector and commercial clients, including major government departments and small SME startups. The organisation delivers 24/7 cyber operations services such as security operations centre monitoring, incident management, incident response, and protective monitoring. It also offers tailored assurance activities, security training, policy development, and risk management using industry-aligned frameworks and methodologies.
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