| G4S Secure Solutions (Singapore) Pte Ltd | East | Commercial | SSO | SSO | Eunos |
| G4S Secure Solutions (Singapore) Pte Ltd | East | Commercial | SO | SSO | Eunos |
| Metropolis Security Systems Pte Ltd | North | - | SO | SSO | Sembawang |
| Inhouse Employer | Central | Country Club | OM | SSO | Hougang |
| Inhouse Employer | Central | Country Club | OM | SSO | Hougang |
| M Hotel Singapore City Centre | Central | Hotel | SSO | SSO | Sengkang |
| Force-One Security | North | Data Centre | OE | SSO | Sengkang |
| G4S Secure Solutions (Singapore) Pte Ltd | South | Commercial | SSO | SSO | Bukit Batok |
| Ademco Security Pte Ltd | West | Industrial / Factory | SSO | SSO | Bukit Batok |
| Triple ‘S’ Protection Pte Ltd | West | Depot | SSO | SSO | Bukit Batok |
| Triple ‘S’ Protection Pte Ltd | West | Commercial | SSO | SSO | Bukit Batok |
| Metropolis Security Systems Pte Ltd | North | - | SO | SSO | - |
| Triple ‘S’ Protection Pte Ltd | West | Depot | SSO | SSO | Bukit Batok |
| G4S Secure Solutions (Singapore) Pte Ltd | South | Commercial | SSO | SSO | Eunos |
| Triple ‘S’ Protection Pte Ltd | Island Wide | - | OE | SSO | Tuas Link |
| William Secure Solutions Pte Ltd | Central | Hotel | SO | SSO | - |
| ESA Security Pte Ltd | South | Hotel | SSO | SSO | - |
| Soverus Pte Ltd | Central | Data Centre | SSO | SSO | - |
| Eagle I Security Services Pte Ltd | East | Commercial | SO | SSO | - |
| Excellent Security & Safety Pte Ltd | East | Data Centre | SSO | SSO | - |
| Dragnet Smartech Security Pte Ltd | Island Wide | Commercial | SO | SSO | - |
| ESA Security Pte Ltd | West | Industrial / Factory | SSO | SSO | Jurong East |
| Ranger Investigation & Security Services Pte Ltd | East | In-House | SSO | SSO | Boon Lay |
| Ranger Investigation & Security Services Pte Ltd | East | In-House | SSO | SSO | Boon Lay |
| SATS Ltd | Island Wide | - | Inves | SSO | Boon Lay |
