| Regal Security & Fire Management Services Pte Ltd | Central | - | OE | CSO | Marsiling |
| Inhouse Employer | Central | Mix-Development | OE | CSO | Marsiling |
| Royal Security Management Services Pte Ltd | Island Wide | - | OE | CSO | Marsiling |
| ProtectPlus Pte Ltd | Island Wide | - | OE | CSO | Marsiling |
| SATS Ltd | East | - | OE | CSO | Marsiling |
| JEN Singapore Tanglin by Shangri-La | Central | In-House | OE | CSO | Marsiling |
| Kingston Property Maintenance Services Pte Ltd | Island Wide | - | OE | CSO | Marsiling |
| Regal Security & Fire Management Services Pte Ltd | Central | - | OE | CSO | Marsiling |
| Securus Pte Ltd | Island Wide | - | OE | SO | Bukit Batok |
| SECOM Singapore Pte Ltd | Island Wide | - | OE | SO | Bukit Batok |
| ProtectPlus Pte Ltd | Island Wide | - | OE | SS | Ang Mo Kio |
| Metropolis Security Systems Pte Ltd | Island Wide | - | OE | SS | Ang Mo Kio |
| Royal Security Management Services Pte Ltd | Island Wide | - | OE | SS | Ang Mo Kio |
| FormTeam Consultancy Pte Ltd | Island Wide | - | OE | SS | Ang Mo Kio |
| FormTeam Consultancy Pte Ltd | Island Wide | - | OE | Nil | Ang Mo Kio |
| Crowne Plaza Changi Airport | East | In-House | OE | CSO | Sengkang |
| Securus Pte Ltd | Island Wide | - | OE | CSO | Sengkang |
| SATS Ltd | East | - | OE | SS | Eunos |
| Prosegur Singapore Pte Ltd | Island Wide | - | OE | SS | Tampines |
| SATS Ltd | East | - | OE | SSS | Sengkang |
| Royal Security Management Services Pte Ltd | Island Wide | - | OE | SSS | Sengkang |
| Guthrie FMC Security Pte Ltd | Island Wide | - | OE | SSS | Sengkang |
| Peregrine Security Pte. Ltd. | Island Wide | - | OE | SSS | Sengkang |
| Union Security Services Pte. Ltd. | Island Wide | - | OE | SSS | Sengkang |
| Overseas (Singapore) Security & Private Investigation Consultants Pte Ltd | Island Wide | - | OE | SSS | Sengkang |
