| Jasa Investigation & Security Services Pte Ltd | East | Condominium | SS | SS | - |
| Dragnet Smartech Security Pte Ltd | Central | Condominium | SS | SS | - |
| IGC Security Services Pte Ltd | Central | Condominium | SS | SS | - |
| Securus Pte Ltd | East | Condominium | SS | SS | - |
| AETOS Holdings Pte Ltd | West | - | SO | SS | Marsiling |
| Pedro Investigations & Security Services Pte. Ltd. | Central | Industrial / Factory | SO | SS | Tuas Link |
| Crowne Plaza Changi Airport | East | Hotel | SO | SS | Pasir Ris |
| PICO Guards Pte Ltd | Island Wide | - | OE | SS | - |
| Acestes Pte Ltd | Central | - | Security Mgt | SS | Tampines |
| Titanium Safety & Security Pte Ltd | Island Wide | - | OE | SS | Tampines |
| Acestes Pte Ltd | Central | - | Security Mgt | SS | Pasir Ris |
| TwinRock Global | Central | - | Security Mgt | SS | Pasir Ris |
| Metropolis Security Systems Pte Ltd | Island Wide | Mix-Development | SS | SS | Woodlands |
| Premier Security Co-operative Ltd | Central | Healthcare | SSS | SS | Woodlands |
| Ranger Investigation & Security Services Pte Ltd | Island Wide | In-House | SS | SS | Woodlands |
| Premier Security Co-operative Ltd | Central | Healthcare | SSS | SS | Farrer Park |
| William Secure Solutions Pte Ltd | Central | Condominium | SO | SS | Farrer Park |
| Union Security Services Pte. Ltd. | East | Data Centre | SS | SS | Farrer Park |
| RAS Security Pte Ltd | North | Commercial | SSO | SS | Yishun |
| RAS Security Pte Ltd | North | Commercial | SSO | SS | Sembawang |
| Securus Pte Ltd | Island Wide | - | OE | SS | Clementi |
| Peregrine Security Pte. Ltd. | Island Wide | - | OE | SS | Clementi |
| Overseas (Singapore) Security & Private Investigation Consultants Pte Ltd | Island Wide | - | OE | SS | Clementi |
| Guthrie FMC Security Pte Ltd | Island Wide | - | OE | SS | Clementi |
| SATS Ltd | Island Wide | - | OM | SS | Clementi |
