| Legion Protection Pte Ltd | Island Wide | - | OE | SS | Woodlands |
| Metropolis Security Systems Pte Ltd | Island Wide | - | OE | SS | Woodlands |
| Overseas (Singapore) Security & Private Investigation Consultants Pte Ltd | Island Wide | - | OE | SS | Woodlands |
| Titanium Safety & Security Pte Ltd | Island Wide | - | OE | SO | Woodlands |
| SATS Ltd | East | - | OE | SO | Woodlands |
| Union Security Services Pte. Ltd. | Island Wide | - | OE | SS | Woodlands |
| ProtectPlus Pte Ltd | Island Wide | - | OE | SS | Woodlands |
| Mainguard Security Services (S) 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 |
| Stalwart Security Pte Ltd | Island Wide | - | OE | SS | Woodlands |
| Securus Pte Ltd | Island Wide | - | OE | SS | Woodlands |
| Peregrine Security Pte. Ltd. | Island Wide | - | OE | SS | Woodlands |
| Soverus Pte Ltd | Island Wide | - | OE | SSO | Woodlands |
| Jasa Investigation & Security Services Pte Ltd | East | Condominium | SS | SS | Woodlands |
| Triple ‘S’ Protection Pte Ltd | West | Commercial | SS | SS | Woodlands |
| Eagle I Security Services Pte Ltd | East | Commercial | SS | SS | Woodlands |
| Union Security Services Pte. Ltd. | Central | Industrial / Factory | SS | SS | Woodlands |
| Securus Pte Ltd | East | Commercial | SS | SS | Woodlands |
| Jasa Investigation & Security Services Pte Ltd | Central | Commercial | SS | SS | Woodlands |
| Danmax Security Management Pte Ltd | Central | Condominium | SS | SS | Woodlands |
| SMS Investigation & Security Pte Ltd | South | Commercial | SS | SS | Woodlands |
| Soverus Pte Ltd | South | Commercial | SS | SS | Woodlands |
| IGC Security Services Pte Ltd | Central | Condominium | SS | SS | Woodlands |
| Premier Security Co-operative Ltd | East | Commercial | SS | SS | Woodlands |
