| Inhouse Employer | North | Industrial / Factory | SSO | CSO | Yishun |
| First Security & Private Investigation (Singapore) Pte Ltd | West | Condominium | SSO | SSO | Choa Chu Kang |
| G4S Secure Solutions (Singapore) Pte Ltd | East | In-House | SSO | SSO | Pasir Ris |
| G4S Secure Solutions (Singapore) Pte Ltd | East | In-House | SSO | SSO | Pasir Ris |
| G4S Secure Solutions (Singapore) Pte Ltd | Central | In-House | SSO | SSO | Pasir Ris |
| G4S Secure Solutions (Singapore) Pte Ltd | East | Commercial | SSO | SSO | Pasir Ris |
| G4S Secure Solutions (Singapore) Pte Ltd | Central | In-House | SSO | SSO | Pasir Ris |
| Bulls-Eye Security Services Pte Ltd | Island Wide | - | SSO | SSO | Pasir Ris |
| Dragnet Smartech Security Pte Ltd | Central | School | SSO | SSO | Pasir Ris |
| RAS Security Pte Ltd | North | Commercial | SSO | SSO | Buona Vista |
| Prosegur Singapore Pte Ltd | East | Commercial | SSO | SSO | Pasir Ris |
| G4S Secure Solutions (Singapore) Pte Ltd | South | Commercial | SSO | SSS | Woodlands |
| Prosegur Singapore Pte Ltd | East | Commercial | SSO | Nil | Pasir Ris |
| RAS Security Pte Ltd | North | Commercial | SSO | SS | Choa Chu Kang |
| Premier Security Co-operative Ltd | North | Commercial | SSO | SS | Yishun |
| Sands Global Pte Ltd | Central | Condominium | SSO | SSO | Choa Chu Kang |
| Sands Global Pte Ltd | Central | Condominium | SSO | SSO | Choa Chu Kang |
| SMS Investigation & Security Pte Ltd | North | Condominium | SSO | SS | Woodlands South |
| RAS Security Pte Ltd | North | Commercial | SSO | SS | Woodlands South |
| G4S Secure Solutions (Singapore) Pte Ltd | East | In-House | SSO | SS | Bukit Panjang |
| M Hotel Singapore City Centre | Central | Hotel | SSO | SSS | Tampines |
| M Hotel Singapore City Centre | Central | Hotel | SSO | SSS | Tampines |
| G4S Secure Solutions (Singapore) Pte Ltd | East | Commercial | SSO | SSO | Woodlands |
| G4S Secure Solutions (Singapore) Pte Ltd | South | Commercial | SSO | SSO | Woodlands |
| G4S Secure Solutions (Singapore) Pte Ltd | South | Commercial | SSO | SSO | Woodlands |
