| Aero Asia Security Systems Pte Ltd | Island Wide | - | OE | SSS | Woodlands |
| Titanium Safety & Security Pte Ltd | West | Dormitory | SSO | SSO | Bukit Batok |
| Peregrine Security Pte. Ltd. | Island Wide | - | OE | SSS | Tampines West |
| ARSLAN SRS Singapore | South | In-House | RSOC/CAMS Op | SSS | Jurong East |
| Inhouse Employer | West | In-House | OM | SSS | Dover |
| Aero Asia Security Systems Pte Ltd | Island Wide | - | OE | SSO | Hougang |
| Inhouse Employer | North | In-House | SO | SO | - |
| Eagle I Security Services Pte Ltd | East | Commercial | SS | SS | Punggol |
| Inhouse Employer | West | In-House | SO | SSO | Bukit Gombak |
| AGS Integration Pte. Ltd. | West | In-House | SS | SS | Bukit Batok |
| PICO Guards Pte Ltd | Island Wide | - | OM | SSS | Tampines |
| Inhouse Employer | North | In-House | SO | SSO | Bukit Batok |
| Artyzen Singapore | Central | Hotel | SS | CSO | Marsiling |
| Octopus Distribution Networks Pte Ltd | East | In-House | SO | SSO | - |
| Artyzen Singapore | Central | Hotel | SO | SO | - |
| Inhouse Employer | Central | In-House | SSS | CSO | Woodlands |
| York Hotel (Private) Limited | Central | In-House | OM | CSO | Marsiling |
| Certis Group | North | - | SO | Nil | Marsiling |
| Soverus Pte Ltd | Island Wide | - | SSS | CSO | Marsiling |
| Securus Pte Ltd | Island Wide | Commercial | SO | SO | Punggol |
| G4S Secure Solutions (Singapore) Pte Ltd | East | Commercial | SSO | SSO | Pasir Ris |
| Royal Security Management Services Pte Ltd | Island Wide | - | OE | SSS | Sengkang |
| Metropolis Security Systems Pte Ltd | South | Commercial | SSS | SSS | Lakeside |
| SATS Ltd | Island Wide | - | OM | CSO | Toa Payoh |
| Inhouse Employer | Central | Mix-Development | Security Mgt | CSO | Marsiling |
