| FormTeam Consultancy Pte Ltd | Island Wide | - | OE | SS | Admiralty |
| PICO Guards Pte Ltd | Island Wide | - | OE | SS | - |
| AGS Integration Pte. Ltd. | Island Wide | - | OE | SS | - |
| Ranger Investigation & Security Services Pte Ltd | Island Wide | In-House | OE | SS | - |
| Legion Protection Pte Ltd | Island Wide | - | OE | SS | - |
| PICO Guards Pte Ltd | Island Wide | - | OE | SS | - |
| Ademco Security Pte Ltd | Island Wide | - | SSO | SS | Ang Mo Kio |
| PICO Guards Pte Ltd | North | Data Centre | SS | SS | Ang Mo Kio |
| G4S Secure Solutions (Singapore) Pte Ltd | West | Industrial / Factory | SS | SS | Pioneer |
| Premier Security Co-operative Ltd | South | Commercial | SS | SS | Pioneer |
| Peregrine Security Pte. Ltd. | South | Office Building | SS | SS | Pioneer |
| Premier Security Co-operative Ltd | South | Commercial | SS | SS | Pioneer |
| SATS Ltd | Island Wide | - | OM | SS | Tampines |
| Orchid Hotel Private Limited | Central | In-House | OM | SS | Tampines |
| Apro Asian Protection Pte Ltd | Island Wide | - | OM | SS | Tampines |
| Uniforce Security Services Pte Ltd | Central | - | SSO | SS | Bukit Panjang |
| Soverus Pte Ltd | Island Wide | - | SSS | SS | Bukit Panjang |
| Inhouse Employer | Central | In-House | SSS | SS | Bukit Panjang |
| ProtectPlus Pte Ltd | Island Wide | - | OE | SS | Bukit Panjang |
| Securus Pte Ltd | East | Condominium | SS | SS | Aljunied |
| Mainguard Security Services Singapore Pte Ltd | Central | Gov Building | SS | SS | Aljunied |
| G4S Secure Solutions (Singapore) Pte Ltd | South | Commercial | SSO | SS | Bukit Panjang |
| G4S Secure Solutions (Singapore) Pte Ltd | South | Commercial | SSO | SS | Bukit Panjang |
| Inhouse Employer | Central | Country Club | OM | SS | Pioneer |
| Young Women's Christian Association of Singapore | Central | In-House | SO | SS | Aljunied |
