| Young Women's Christian Association of Singapore | Central | In-House | Security Mgt | CSO | Boon Lay |
| SATS Ltd | Island Wide | - | OM | CSO | Boon Lay |
| Inhouse Employer | Central | Country Club | OM | CSO | Boon Lay |
| Aedge Services Pte Ltd | Island Wide | - | OM | CSO | Boon Lay |
| Triple ‘S’ Protection Pte Ltd | West | Depot | SSO | SSO | Boon Lay |
| DP Quest Investigation Consultancy Pte Ltd | West | Condominium | SSO | SS | Boon Lay |
| Ascentiaa Security Management Pte Ltd | Island Wide | Condominium | SS | SS | Boon Lay |
| G4S Secure Solutions (Singapore) Pte Ltd | West | Industrial / Factory | SS | CSO | Boon Lay |
| Inhouse Employer | Island Wide | Construction | OM | CSO | Boon Lay |
| PICO Guards Pte Ltd | Central | School | SSO | SO | Boon Lay |
| William Secure Solutions Pte Ltd | West | Industrial / Factory | SSO | SO | Boon Lay |
| Triple ‘S’ Protection Pte Ltd | Central | Industrial / Factory | SSO | SO | Boon Lay |
| Ademco Security Pte Ltd | West | Industrial / Factory | SSO | SO | Boon Lay |
| G4S Secure Solutions (Singapore) Pte Ltd | West | School | SSO | SO | Boon Lay |
| G4S Secure Solutions (Singapore) Pte Ltd | East | In-House | SSO | SO | Boon Lay |
| Jasa Investigation & Security Services Pte Ltd | West | Industrial / Factory | SSO | SO | Boon Lay |
| PICO Guards Pte Ltd | West | Industrial / Factory | SSO | SO | Boon Lay |
| RAS Security Pte Ltd | North | Commercial | SSO | SO | Boon Lay |
| Ranger Investigation & Security Services Pte Ltd | East | In-House | SSO | SSO | Boon Lay |
| Ranger Investigation & Security Services Pte Ltd | East | In-House | SSO | SSO | Boon Lay |
| SATS Ltd | Island Wide | - | Inves | SSO | Boon Lay |
| Inhouse Employer | Central | Hotel | OE | SSO | Boon Lay |
| Reachfield Security & Safety Management Pte Ltd | Island Wide | Commercial | OE | SSO | Boon Lay |
| Metropolis Security Systems Pte Ltd | Island Wide | - | OE | SSO | Boon Lay |
| Guthrie FMC Security Pte Ltd | Island Wide | - | OE | SSO | Boon Lay |
