| Strive Security Pte Ltd | Island Wide | - | OE | SSS | Pioneer |
| Royal Security Management Services Pte Ltd | Island Wide | - | OE | SSS | Pioneer |
| Global Ritz Protection (Security Services) Pte Ltd | Island Wide | - | OE | SSS | Pioneer |
| Uniforce Security Services Pte Ltd | Island Wide | - | OE | SSS | Pioneer |
| Regal Security & Fire Management Services Pte Ltd | Central | - | OE | SSS | Pioneer |
| Soverus Pte Ltd | Island Wide | - | OE | SSS | Pioneer |
| Guthrie FMC Security Pte Ltd | Island Wide | - | OE | SSS | Pioneer |
| Trek Investigations & Security Management Services Pte Ltd | Island Wide | - | OE | SSS | Pioneer |
| Trek Investigations & Security Management Services Pte Ltd | Island Wide | - | OE | SSS | Pioneer |
| Strive Security Pte Ltd | Island Wide | - | OE | SSS | Pioneer |
| Inhouse Employer | Central | Mix-Development | Security Mgt | SSS | Pioneer |
| Star Security Services | Island Wide | - | Security Mgt | SSS | Pioneer |
| TwinRock Global | Central | - | Security Mgt | SSS | Pioneer |
| IGC Security Services Pte Ltd | South | Commercial | SS | SSS | Pioneer |
| AGS Integration Pte. Ltd. | Island Wide | - | SS | SSS | Pioneer |
| Soverus Pte Ltd | Central | Commercial | SSS | SSS | Pioneer |
| Star Security Services | Island Wide | - | Security Mgt | SS | Pioneer |
| Inhouse Employer | Central | In-House | SS | CSO | Pioneer |
| Inhouse Employer | Island Wide | Construction | OM | SS | Pioneer |
| SATS Ltd | Island Wide | - | OM | SS | Pioneer |
| ARSLAN SRS Singapore | South | In-House | RSOC/CAMS Op | SS | Pioneer |
| SMS Security | East | Mix-Development | SSO | SSO | Potong Pasir |
| Prosegur Singapore Pte Ltd | East | Data Centre | SSO | SSO | Potong Pasir |
| First Security & Private Investigation (Singapore) Pte Ltd | South | Commercial | SO | SO | Potong Pasir |
| First Security & Private Investigation (Singapore) Pte Ltd | North | Industrial / Factory | SO | SO | Potong Pasir |
