| AGS Integration Pte. Ltd. | West | In-House | SS | SS | Bukit Batok |
| G4S Secure Solutions (Singapore) Pte Ltd | South | Commercial | SSO | SS | Bukit Batok |
| G4S Secure Solutions (Singapore) Pte Ltd | Central | In-House | SSO | SS | Bukit Batok |
| Soverus Pte Ltd | Island Wide | - | SSS | SS | Choa Chu Kang |
| Inhouse Employer | West | In-House | OM | SS | Choa Chu Kang |
| SATS Ltd | Island Wide | - | OM | SS | Clementi |
| Pedro Investigations & Security Services Pte. Ltd. | Central | - | SSO | SS | Bukit Batok |
| JEN Singapore Tanglin by Shangri-La | Central | In-House | OE | SS | Bukit Batok |
| Certis Group | Central | Commercial | SO | SS | Bukit Batok |
| AGS Integration Pte. Ltd. | West | In-House | SS | SS | Bukit Batok |
| Soverus Pte Ltd | Island Wide | - | SSS | SS | Choa Chu Kang |
| Triple ‘S’ Protection Pte Ltd | Island Wide | - | OM | SS | Choa Chu Kang |
| GoMobile Security Solutions Pte Ltd | Island Wide | - | OM | SS | Choa Chu Kang |
| PICO Guards Pte Ltd | Island Wide | - | OM | SS | Choa Chu Kang |
| Royal Security Management Services Pte Ltd | Island Wide | - | OE | SS | Bukit Batok |
| Metropolis Security Systems Pte Ltd | Island Wide | - | OE | SS | Bukit Batok |
| M Social Singapore | Central | Hotel | OE | SS | Bukit Batok |
| Inhouse Employer | Central | Mix-Development | OE | SS | Bukit Batok |
| RAS Security Pte Ltd | North | Commercial | OE | SS | Bukit Batok |
| Eagle I Security Services Pte Ltd | Island Wide | - | OE | SS | Bukit Batok |
| G4S Secure Solutions (Singapore) Pte Ltd | South | Commercial | SSO | SS | Ang Mo Kio |
| PICO Guards Pte Ltd | Island Wide | - | OM | SS | Choa Chu Kang |
| Regal Security & Fire Management Services Pte Ltd | Central | In-House | SSO | SS | Bukit Batok |
| G4S Secure Solutions (Singapore) Pte Ltd | South | Commercial | SSO | SS | Bukit Batok |
| G4S Secure Solutions (Singapore) Pte Ltd | South | Commercial | SSO | SS | Bukit Batok |
