| RAS Security Pte Ltd | North | In-House | Office Team | SO | Bedok |
| Union Security Services Pte. Ltd. | North | Commercial | SS | SS | Bukit Panjang |
| PICO Guards Pte Ltd | North | Data Centre | SS | SS | Ang Mo Kio |
| Securitas Guarding Services (Singapore) Pte Ltd | North | Data Centre | SO | SSO | Tampines |
| Force-One Security | North | Data Centre | SS | SSO | Tampines |
| Royal Security Management Services Pte Ltd | North | Industrial / Factory | SO | SSO | Woodlands |
| Force-One Security | North | Data Centre | OE | SSO | Hougang |
| G4S Secure Solutions (Singapore) Pte Ltd | North | School | SO | SSO | Ang Mo Kio |
| Excellent Security & Safety Pte Ltd | North | Data Centre | SO | SSO | Ang Mo Kio |
| Reachfield Security & Safety Management Pte Ltd | North | School | SO | SO | Woodlands |
| Reachfield Security & Safety Management Pte Ltd | North | School | SO | SO | Woodlands |
| Force-One Security | North | Data Centre | SO | SO | Yishun |
| Reachfield Security & Safety Management Pte Ltd | North | School | SO | SO | Woodlands |
| Union Security Services Pte Ltd | North | Healthcare | SO | SS | Woodlands South |
| RAS Security Pte Ltd | North | In-House | Office Team | SS | Punggol |
| Union Security Services Pte Ltd | North | Healthcare | SO | SS | Woodlands South |
| Titanium Safety & Security Pte Ltd | North | In-House | OE | SS | Admiralty |
| Titanium Safety & Security Pte Ltd | North | In-House | OE | SS | Marsiling |
| Union Security Services Pte. Ltd. | North | - | SSO | CSO | Bedok |
| Security Masters Pte Ltd | North | Commercial | CSO | CSO | Bedok |
| Security Masters Pte Ltd | North | Commercial | CSO | CSO | Bedok |
| RAS Security Pte Ltd | North | Commercial | SSO | SSO | Hougang |
| Soverus Pte Ltd | North | Industrial / Factory | SO | SO | Yishun |
| Securus Pte Ltd | North | Condominium | SS | SS | Marsiling |
| Eagle I Security Services Pte Ltd | North | Condominium | SS | SS | Marsiling |
