| SECOM Smart (Singapore) Pte. Ltd. | West | Commercial | SSO | SO | Bukit Batok |
| Metropolis Security Systems Pte Ltd | Island Wide | - | OE | SO | Bukit Batok |
| JEN Singapore Tanglin by Shangri-La | Central | In-House | OE | SO | Bukit Batok |
| G4S Secure Solutions (Singapore) Pte Ltd | South | - | SO | SO | Bukit Batok |
| G4S Secure Solutions (Singapore) Pte Ltd | South | - | SO | SO | Bukit Batok |
| Union Security Services Pte. Ltd. | Island Wide | - | SSO | SO | Bukit Batok |
| Prosec Services Pte Ltd | Central | Commercial | SO | SO | Bukit Batok |
| Total Protection Solutions Pte Ltd | North | - | SSO | SO | Bukit Batok |
| Regal Security & Fire Management Services Pte Ltd | Central | In-House | SSO | SO | Bukit Batok |
| A-SAT Pte Ltd | North | Commercial | SSO | SO | Bukit Batok |
| Premier Security Co-operative Ltd | South | Commercial | SO | SO | Bukit Batok |
| SECOM Smart (Singapore) Pte. Ltd. | West | Commercial | SSO | SO | Bukit Batok |
| Reachfield Security & Safety Management Pte Ltd | Central | Commercial | SSO | SO | Bukit Batok |
| SMS Investigation & Security Pte Ltd | Island Wide | - | SSO | SO | Bukit Batok |
| Jasa Investigation & Security Services Pte Ltd | Central | Healthcare | SSO | SO | Bukit Batok |
| Union Security Services Pte. Ltd. | Island Wide | - | SSO | SO | Bukit Batok |
| TwinRock Global | Central | - | SO | SO | Bukit Batok |
| Dragnet Smartech Security Pte Ltd | East | - | SSO | SO | Bukit Batok |
| AGS Integration Pte. Ltd. | West | In-House | SS | SO | Bukit Batok |
| Soverus Pte Ltd | South | In-House | SSO | SO | Bukit Batok |
| Titanium Safety & Security Pte Ltd | North | In-House | SSO | SO | Bukit Batok |
| Peregrine Security Pte. Ltd. | Central | - | SSO | SO | Bukit Batok |
| Union Security Services Pte. Ltd. | North | - | SSO | SO | Bukit Batok |
| Reachfield Security & Safety Management Pte Ltd | Central | Commercial | SSO | SO | Bukit Batok |
| SECOM Smart (Singapore) Pte. Ltd. | West | Commercial | SSO | SO | Bukit Batok |
