| ProtectPlus Pte Ltd | Island Wide | - | OE | SS | Woodlands |
| Star Security Services | Island Wide | - | OE | SS | Woodlands |
| Royal Security Management Services Pte Ltd | Island Wide | - | OE | SS | Woodlands |
| Legion Protection Pte Ltd | Island Wide | - | OE | SO | Bukit Batok |
| SATS Ltd | Island Wide | - | Inves | SSS | Dakota |
| Inhouse Employer | Island Wide | Construction | OM | CSO | Boon Lay |
| Star Security Services | Island Wide | - | OE | SSS | Tampines |
| PICO Guards Pte Ltd | Island Wide | - | OE | SSS | Tampines |
| Kingston Property Maintenance Services Pte Ltd | Island Wide | - | OE | SSS | Tampines |
| Titanium Safety & Security Pte Ltd | Island Wide | - | OE | SSS | Tampines |
| Overseas (Singapore) Security & Private Investigation Consultants Pte Ltd | Island Wide | - | OE | SSS | Tampines |
| Legion Protection Pte Ltd | Island Wide | - | OE | SSS | Tampines |
| Guthrie FMC Security Pte Ltd | Island Wide | - | OE | SSS | Tampines |
| ProtectPlus Pte Ltd | Island Wide | - | OE | SSS | Tampines |
| Peregrine Security Pte. Ltd. | Island Wide | - | OE | SSS | Tampines |
| Guthrie FMC Security Pte Ltd | Island Wide | - | OE | CSO | Marsiling |
| Overseas (Singapore) Security & Private Investigation Consultants Pte Ltd | Island Wide | - | OE | SSS | Tampines |
| Fervour Pte Ltd | Island Wide | - | OM | SSS | Tampines |
| Kingston Property Maintenance Services Pte Ltd | Island Wide | - | OE | SSS | Tampines |
| Peregrine Security Pte. Ltd. | Island Wide | - | OE | SO | Sembawang |
| Star Security Services | Island Wide | - | OE | SSS | Tampines |
| Titanium Safety & Security Pte Ltd | Island Wide | - | OE | SSS | Tampines |
| FormTeam Consultancy Pte Ltd | Island Wide | - | OE | SS | Woodlands |
| Kingston Property Maintenance Services Pte Ltd | Island Wide | - | OE | SS | Woodlands |
| ProtectPlus Pte Ltd | Island Wide | - | OE | SS | Woodlands |
