| PICO Guards Pte Ltd | Island Wide | - | OE | SS | Pioneer |
| Peregrine Security Pte. Ltd. | Island Wide | - | OE | SS | Marsiling |
| GATES PCM Integrated Services Pte Ltd | Island Wide | - | OE | SS | Marsiling |
| PICO Guards Pte Ltd | Island Wide | - | OE | SS | Marsiling |
| Metropolis Security Systems Pte Ltd | Island Wide | - | OE | SS | Marsiling |
| Aigle Security Pte Ltd | Island Wide | - | OE | SS | Marsiling |
| AGS Integration Pte. Ltd. | Island Wide | - | OE | SS | Marsiling |
| FormTeam Consultancy Pte Ltd | Island Wide | - | OE | SS | Marsiling |
| Ademco Security Pte Ltd | Island Wide | - | OE | SS | Marsiling |
| Regal Security & Fire Management Services Pte Ltd | Central | - | OE | SS | Marsiling |
| Securus Pte Ltd | Island Wide | - | OE | SS | Marsiling |
| Royal Security Management Services Pte Ltd | Island Wide | - | OE | SS | Marsiling |
| AGS Integration Pte. Ltd. | Island Wide | - | OE | SS | Marsiling |
| Guthrie FMC Security Pte Ltd | Island Wide | - | OE | SS | Marsiling |
| Royal Security Management Services Pte Ltd | Island Wide | - | OE | SS | Sengkang |
| Global Ritz Protection (Security Services) Pte Ltd | Island Wide | - | OE | SS | Sengkang |
| Crowne Plaza Changi Airport | East | In-House | OE | SS | Sengkang |
| FormTeam Consultancy Pte Ltd | Island Wide | - | OE | SS | Sengkang |
| Titanium Safety & Security Pte Ltd | North | In-House | OE | SS | Sengkang |
| Eagle I Security Services Pte Ltd | Island Wide | - | OE | SS | Sengkang |
| Aigle Security Pte Ltd | Island Wide | - | OE | SS | Sengkang |
| Reachfield Security & Safety Management Pte Ltd | Island Wide | Commercial | OE | CSO | Bedok |
| Peregrine Security Pte. Ltd. | Island Wide | - | OE | CSO | Bedok |
| Force-One Security | North | Data Centre | OE | SSS | Woodlands |
| Aigle Security Pte Ltd | Island Wide | - | OE | CSO | Bedok |
