Security operations, connected.
Security. Sites. Shifts. Staff.
One platform connecting your workforce, compliance, sites, patrols, incidents and clients.
Built for UK security companiesMobile + webOperational evidence in one place
Live site coverage
Patrol completed · Site 14
Welfare check due · 8 min
Guard booked on · Site 22
Incident needs review
Choose your starting point
Start simple. Or run everything.
S4 gives security companies a lightweight patrol-evidence product and a complete operations platform.
S4 Platform
Explore S4 Platform →Complete security operations management.
Manage your workforce, sites, shifts and clients from one connected platform.
PatrolSafe by S4
Patrol evidence without the messaging chaos.
Turn everyday patrol photos into secure, organised and searchable site records without forcing guards into a complex new workflow.
Patrol photos→Organised evidence→Searchable records
Discover PatrolSafe →The S4 ecosystem
One operation. Everyone connected.
S4 Guard
Mobile operations for security officers
S4 Ops
Company workforce and operations portal
S4 Client
Client visibility and reporting
S4 Control
Live control-room operations
S4 Verify
Screening and compliance
S4 Marketplace
Source eligible security personnel
From onboarding to proof of service
Run the full security operation.
Build your workforce
Registration, eligibility, screening and approval.
Manage your sites
Clients, sites, instructions and requirements.
Schedule your shifts
Deploy internal staff or source eligible guards.
Run live operations
Book on/off, patrols, welfare, incidents and escalation.
Prove delivery
Timesheets, occurrence records, evidence and reports.
See S4 in your operation
Ready to modernise your security operations?
Book a product walkthrough and see how S4 can fit your company, sites and workforce.