| Triple ‘S’ Protection Pte Ltd | Island Wide | - | OM | SSS | Sengkang |
| Concorde Security Pte Ltd | Central | Commercial | SO | SSO | Pasir Ris |
| Reachfield Security & Safety Management Pte Ltd | Island Wide | Commercial | OE | Nil | Dover |
| Union Security Services Pte. Ltd. | Island Wide | - | OE | CSO | Marsiling |
| Force-One Security | Central | Commercial | SO | SSO | - |
| Unique Security Services Pte Ltd | South | Condominium | SO | SSO | Tiong Bahru |
| ProtectPlus Pte Ltd | Island Wide | - | OE | SS | Woodlands |
| Inhouse Employer | Central | Hotel | OE | SSO | Boon Lay |
| Apro Asian Protection Pte Ltd | Island Wide | - | OM | SSS | Jurong East |
| Focus Security Services Pte Ltd | West | Condominium | SS | SS | - |
| G4S Secure Solutions (Singapore) Pte Ltd | Island Wide | - | OE | SSS | Sengkang |
| Reachfield Security & Safety Management Pte Ltd | Central | School | SO | SO | Tiong Bahru |
| PICO Guards Pte Ltd | North | Data Centre | SSO | SSO | Ang Mo Kio |
| Strive Security Pte Ltd | Island Wide | - | OE | SSS | Sengkang |
| Total Protection Solutions Pte Ltd | Island Wide | - | OM | SSS | Sengkang |
| Inhouse Employer | Central | Hotel | SS | SSS | Potong Pasir |
| Grand Copthorne Waterfront Hotel | Central | In-House | Security Mgt | CSO | Toa Payoh |
| G4S Secure Solutions (Singapore) Pte Ltd | South | Commercial | SSO | SSS | Woodlands |
| PICO Guards Pte Ltd | Central | Commercial | SSS | SSS | Potong Pasir |
| Force-One Security | North | Data Centre | OE | CSO | Yishun |
| G4S Secure Solutions (Singapore) Pte Ltd | South | Commercial | SSO | SSO | - |
| Aigle Security Pte Ltd | East | Commercial | SO | SO | Punggol |
| GATES PCM Integrated Services Pte Ltd | West | School | SO | SO | Punggol |
| AETOS Holdings Pte Ltd | Island Wide | Mix-Development | APO | SO | Tampines |
| Inhouse Employer | East | In-House | SO | SO | Pasir Ris |
