Cybersecurity Solutions

Sabrefish

Sabrefish delivers computer systems design, custom programming and IT consulting services. The company designs infrastructure architecture and handles system integration and performance optimisation, and builds enterprise applications, APIs and legacy system modernisation projects. It also provides cloud migration, infrastructure management and cost optimisation, alongside cybersecurity services covering security audits, threat prevention and compliance management. Sabrefish's data management services include data architecture, analytics and business intelligence. The company is UK-registered and has operated since 2012.

Safedash

Safedash Analytics provides three cybersecurity products: CastDDOS for distributed denial-of-service attack simulation, CastLOAD for load testing under traffic surges, and CastPEN for penetration testing. The company moves infrastructure testing from an annual, compliance-driven exercise to continuous testing with real-time visibility into vulnerabilities, architectural issues and configuration errors. Safedash positions its products to help organisations meet regulatory obligations such as the SEC's cyber resilience rules and the EU's Digital Operational Resilience Act, while reducing risk to digital assets.

Saints & Masters

Saints & Masters provides multi-cloud and hybrid cloud architecture, migration and FinOps across AWS, Azure and GCP. It builds AI agents, LLM deployment and RAG pipelines using Anthropic, GPT and IBM Watsonx, and engineers data platforms with Snowflake and Databricks. Its sovereign infrastructure practice covers bare-metal colocation and private cloud with Equinix partnerships, alongside zero-trust security, SOC-as-a-Service and VAPT testing, and ERP, CRM and ITSM deployments using Zoho and ManageEngine.

Salt Cybersecurity

Salt Cybersecurity provides authentication and payment security products and services to financial institutions. The company's products authenticate B2B payments and user identities for ten major UK banks, underpinning the UK batch payment system and global core MFA authentication for electronic banking. Salt Cybersecurity's technical expertise covers cryptographic systems, authentication technologies and Hardware Security Modules (HSMs), offering organisations deep-level support alongside software and hardware products. The company provides 24/7 customer support covering both hardware and software.

SandboxAQ

SandboxAQ combines artificial intelligence and quantum techniques to build Large Quantitative Models (LQMs) that address complex real-world problems in pharma, energy, defence and other sectors. LQMs work alongside large language models to deliver quantitative outputs grounded in physics, chemistry and biology. The company has received a $500 million CHIPS R&D Award for research into new chipmaking materials and has a technology partnership with Anthropic for LLM integration. SandboxAQ's product areas include AI simulation, cryptography management and AI sensing.

Sanity UK

Structured content platform with a real-time collaborative headless CMS and composable content architecture.

Sayari Analytics

Sayari provides AI-powered judgment infrastructure for economic security and commercial risk, delivering traceable risk assessments grounded in real commercial intelligence and investigative tradecraft. It serves compliance, procurement and legal teams in commercial sectors, as well as government analysts, by enabling automated ownership-chain screening across 250+ jurisdictions with source-cited findings for sanctions, beneficial ownership, forced labor and export controls.

Scheer IMC (UK) LEARNING

Scheer IMC provides enterprise learning solutions including a learning management system, eLearning authoring tool, and custom learning experiences. It serves organisations across industries such as automotive, financial services, healthcare, manufacturing, and public sector, supporting employee onboarding, talent development, compliance training, and partner training for global businesses.

Scyberx

Scyberx is a Watford-based cybersecurity consultancy offering risk assessments, vulnerability assessments, penetration testing, compliance assessments and CISO advisory services. Its technical services cover system hardening, remediation work, cloud security and managed offerings including CISO as a Service, Vulnerability Management as a Service (VMaaS), Penetration Testing as a Service (PTaaS) and Cyber Essentials Plus as a Service. It also provides cybersecurity awareness training and free health checks for education, charity and voluntary organisations.

Searchlight Cyber

Searchlight Cyber provides a preemptive cybersecurity platform comprising Searchlight Exposure and Searchlight Threat, helping security teams identify hidden risks, prioritise vulnerabilities and take action before threats become incidents. Capabilities cover attack surface management, external and third-party exposure monitoring, accelerated remediation and investigation of threat actors, with use cases including law enforcement. Based in Portsmouth, it publishes research via Searchlight Labs.

SecQuest

Our Cyber security consultancy can help assist you in protecting your information, securing your systems, and avoiding potential threats.

Sechpoint Tech

SecurITe Group

SecurITe Group develops AI-powered, healthcare-native cybersecurity defences to protect patient data and clinical systems. The company focuses on the healthcare sector, where annual cyberattack severity and frequency have set repeated records. SecurITe offers industry-specific solutions designed to protect patient data and hospital systems, and has published press releases in both English and German detailing its security approach. The company operates through entities in Santa Clara, Wels, Austria and London, United Kingdom.

SecuraFirm Ltd

Brighton-based cyber security consultancy helping businesses protect against cyber threats through risk assessments, policy improvement and staff training. SecuraFirm offers a data security health check producing a prioritised risk report, support with ISO standards including ISO27001 and ISO9001, Cyber Essentials and Cyber Essentials Plus certification, computer systems validation and a virtual CISO service.

Secure Select

Secure Select provides cybersecurity services sized for UK small businesses. Offerings include one-off advisory and security posture assessments from £250, staff awareness and phishing training, a retained virtual CISO service from £495 a month, and SecureCore, an in-development on-premises AI security appliance. It serves sectors including law firms, accountancy, healthcare, financial services, retail, construction and charities.

Secure Systems & Technologies (SST)

Secure Systems and Technology manufactures TEMPEST-certified IT equipment, EMSEC cabinets and security-hardened hardware from a 22,000 square-foot purpose-built facility in Gloucester, UK. The facility is the only purpose-built TEMPEST design, manufacture and certification operation under one roof in the UK, operating under ISO 9001, ISO 14001 and ISO 45001 standards. SST has over 30 years of experience supplying secure products to defence and government clients. Its alarm analysers and sensors are approved by the UK Government's National Protective Security Authority and listed in the Catalogue of Security Equipment.

Security Alliance

Cyber threat intelligence consultancy serving banks, central banks, and government agencies globally.

Security Audit Systems

Security Risk Management Ltd.

SRM is a Newcastle upon Tyne-based cyber security consultancy providing compliance and testing services to organisations. Its consultants cover ISO 27001, PCI DSS, GDPR, business continuity and disaster recovery, alongside vulnerability testing including penetration testing, red team engagements and social engineering. The company provides digital forensics and incident response, plus managed services fulfilling Virtual CISO and Virtual ISM roles, delivered by staff drawn from the police service, private sector and government agencies.

Security Software Solutions Ltd (S3 Ltd)

Selected Cyber

Selected Cyber provides cyber security, networking and physical security services to businesses from Blackburn, Lancashire. Its cyber offering covers penetration testing, vulnerability scanning, attack surface management, dark web monitoring and incident response. Managed services include a 24x7 MXDR service built on Microsoft Defender XDR and Sentinel, alongside Microsoft CSP licensing. The company also installs and maintains CCTV systems, delivers fibre and copper cabling with business connectivity, and carries out PAT testing.

Sense IT Support and Cyber

Sense IT Support and Cyber provides IT support, network management and cyber services to small and medium-sized businesses. Set up in 2012 and based in Ringwood, the company supports businesses across Bournemouth, Southampton, Poole, Salisbury and Christchurch. Its services cover day-to-day IT support, phones and internet connectivity, and a wider range of IT services designed to grow alongside a client's business. Sense IT Support and Cyber acts as an outsourced IT department for SME networks, handling computers, employee IT assistance and phone system upgrades for its clients, including a recent phone system upgrade for Season Electronics Ltd.

Sense Workplace

AI-powered workforce management platform for companies with dispersed teams covering scheduling, HR admin, and visibility.

Sentinor

Sentinor designs and manufactures intelligent physical security solutions including sensors, alarm analysers and alarm management systems for critical national infrastructure. The company has more than 25 years of experience and its products are approved by the UK Government's National Protective Security Authority, with listings in the Catalogue of Security Equipment. Customers include national utilities, military and police forces, and national heritage organisations. Sentinor also provides installation, maintenance and support services through its own project engineering team.