| Stalwart Security Pte Ltd | Island Wide | - | OE | SSS | Bukit Batok |
| G4S Secure Solutions (Singapore) Pte Ltd | Central | In-House | SSO | SSS | Bukit Batok |
| Securus Pte Ltd | Island Wide | - | OE | SSS | Bukit Batok |
| Labourtel Management Corporation Pte Ltd | West | Dormitory | CSO | SSS | Bukit Batok |
| Certis Group | West | Depot | SS | SSS | Bukit Batok |
| Eagle I Security Services Pte Ltd | Island Wide | - | OE | SSS | Bukit Batok |
| SATS Ltd | Island Wide | - | OM | Nil | Bukit Batok |
| PICO Guards Pte Ltd | Island Wide | - | OM | Nil | Bukit Batok |
| Total Protection Solutions Pte Ltd | Island Wide | - | OM | Nil | Bukit Batok |
| SATS Ltd | Island Wide | - | OM | CSO | Bukit Batok |
| Inhouse Employer | Central | Country Club | OM | CSO | Bukit Batok |
| York Hotel (Private) Limited | Central | In-House | OM | SO | Bukit Batok |
| Aedge Services Pte Ltd | Island Wide | - | OM | CSO | Bukit Batok |
| SATS Ltd | Island Wide | - | OM | Nil | Bukit Batok |
| PICO Guards Pte Ltd | Island Wide | - | OM | Nil | Bukit Batok |
| SATS Ltd | Island Wide | - | OM | Nil | Bukit Batok |
| Metropolis Security Systems Pte Ltd | West | Industrial / Factory | SSO | SSO | Bukit Batok |
| Ascentiaa Security Management Pte Ltd | Island Wide | - | SS | SS | Bukit Batok |
| Securus Pte Ltd | Island Wide | - | OE | SS | Bukit Batok |
| Securus Pte Ltd | Island Wide | - | OE | SS | Bukit Batok |
| Aero Asia Security Systems Pte Ltd | Island Wide | - | OE | SS | Bukit Batok |
| Royal Security Management Services Pte Ltd | Island Wide | - | OE | SS | Bukit Batok |
| Strive Security Pte Ltd | Island Wide | - | OE | SS | Bukit Batok |
| RAS Security Pte Ltd | North | Commercial | OE | SS | Bukit Batok |
| Trek Investigations & Security Management Services Pte Ltd | Island Wide | - | OE | SS | Bukit Batok |
