| 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 |
| Securus Pte Ltd | Island Wide | Commercial | SO | SO | Tampines |
| Eagle I Security Services Pte Ltd | Island Wide | - | OE | SS | Woodlands |
| Royal Security Management Services Pte Ltd | Island Wide | - | OE | SS | Woodlands |
| Soverus Pte Ltd | Island Wide | - | OE | SS | Woodlands |
| Union Security Services Pte. Ltd. | Island Wide | - | OE | SS | Woodlands |
| Guthrie FMC Security Pte Ltd | Island Wide | - | OE | SS | Woodlands |
| Guthrie FMC Security Pte Ltd | Island Wide | - | OE | SS | Woodlands |
| FormTeam Consultancy Pte Ltd | Island Wide | - | OE | SS | Woodlands |
| Soverus Pte Ltd | Island Wide | - | OE | SS | Woodlands |
| Star Security Services | Island Wide | - | Security Mgt | SSS | Pasir Ris |
