| Security & Risk Solutions Pte. Ltd. | Island Wide | - | OE | SS | Sengkang |
| Guthrie FMC Security Pte Ltd | Island Wide | - | OE | SS | Sengkang |
| SECOM Singapore Pte Ltd | Island Wide | - | OE | SO | Bukit Batok |
| Eagle I Security Services Pte Ltd | Island Wide | - | OE | SO | Woodlands |
| Union Security Services Pte. Ltd. | Island Wide | - | OE | SSS | Boon Lay |
| Securus Pte Ltd | Island Wide | - | OE | SSS | Woodlands |
| Aero Asia Security Systems Pte Ltd | Island Wide | - | OE | SSS | Sengkang |
| Inhouse Employer | Island Wide | - | OE | SS | Hougang |
| Inhouse Employer | Central | Healthcare | OE | SS | Hougang |
| Inhouse Employer | Central | Healthcare | OE | SS | Sembawang |
| FormTeam Consultancy Pte Ltd | South | Events | OE | SS | Sembawang |
| Global Ritz Protection (Security Services) Pte Ltd | Island Wide | - | OE | SSS | Admiralty |
| GATES PCM Integrated Services Pte Ltd | Island Wide | - | OE | SSO | Tampines |
| Eagle I Security Services Pte Ltd | Island Wide | - | OE | SS | Woodlands |
| AGS Integration Pte. Ltd. | Island Wide | - | OE | SS | Woodlands |
| Union Security Services Pte. Ltd. | Island Wide | - | OE | SS | Woodlands |
| Union Security Services Pte. Ltd. | Island Wide | - | OE | SSS | Punggol |
| Royal Security Management Services Pte Ltd | Island Wide | - | OE | SSS | Punggol |
| Inhouse Employer | Central | Hotel | OE | SS | Sengkang |
| Securus Pte Ltd | Island Wide | - | OE | CSO | Bedok |
| PICO Guards Pte Ltd | Island Wide | - | OE | SSO | MacPherson |
| G4S Secure Solutions (Singapore) Pte Ltd | Island Wide | - | OE | SS | Yishun |
| Metropolis Security Systems Pte Ltd | Island Wide | - | OE | SS | Marsiling |
| Securus Pte Ltd | Island Wide | Commercial | OE | SS | Marsiling |
| Union Security Services Pte. Ltd. | Island Wide | - | OE | SS | Marsiling |
