WELCOME TO SI4 SECURITY
Physical Security & Resilience Consultancy
​As leading physical security consultants, we empower organisations across the UK to achieve their strategic ambitions by mitigating risks and fostering resilient operations
Welcome to Si4
Si4 is a specialist team of physical security consultants based in Cardiff, servicing clients throughout the UK.
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Our purpose is what drives us. We exist to enable organisations to realise their strategic ambitions, by providing specialised physical security and risk management consultancy services that identify, assess and mitigate risks to their strategic success.
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Together, we curate safe, secure and resilient organisations in an age of ever-changing risk.
WHAT WE DO
Physical Security & Resilience Consulting Solutions
PHYSICAL SECURITY SURVEY & RISK ASSESSMENT
Our expert physical security consultants conduct thorough on-site evaluations and in-depth threat assessments to identify your organisation's unique vulnerabilities. We provide a comprehensive risk profile, meticulously analysing potential threats and their impact, forming the crucial foundation for robust and bespoke security strategies
PHYSICAL SECURITY PROJECT MANAGEMENT
Leverage the expertise of our seasoned security consultants for seamless, end-to-end project management of your physical security initiatives. From initial concept and design through to implementation and handover, we ensure projects are delivered on time, within budget, and to the highest standards, optimising your investment.
PHYSICAL PENETRATION
TESTING
We conduct a range of rigorous, realistic penetration tests that simulate genuine threat scenarios. This proactive approach uncovers latent vulnerabilities in your physical defences, providing invaluable and actionable insights to strengthen your security posture before real-world incidents occur.​
PHYSICAL ASSET PROTECTION STRATEGY
Develop a resilient strategy to safeguard your critical tangible assets. We design tailored frameworks encompassing sophisticated access control systems, advanced surveillance, and robust asset management protocols to ensure comprehensive and continuous protection for your valuable resources.
CRISIS MANAGEMENT | BUSINESS CONTINUITY & EMERGENCY PLANNING
Our expert security consultants specialise in developing resilient crisis management, comprehensive business continuity, and dynamic emergency planning frameworks. We empower you to effectively prepare for, respond to, and recover from unforeseen disruptions, minimising impact and ensuring operational resilience.