| 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 |
| Artyzen Singapore | Central | Hotel | SS | SS | Marsiling |
| Titanium Safety & Security Pte Ltd | North | In-House | OE | SS | Admiralty |
| Titanium Safety & Security Pte Ltd | Island Wide | - | OE | SS | Admiralty |
| Securus Pte Ltd | Island Wide | - | OM | SS | Hougang |
| GoMobile Security Solutions Pte Ltd | Island Wide | - | OM | SS | Hougang |
| Fervour Pte Ltd | Island Wide | - | OM | SS | Hougang |
| York Hotel (Private) Limited | Central | In-House | OM | SS | Hougang |
| Straits Retail Property Management Services Pte. Ltd. | Central | In-House | SO | SS | Pioneer |
| Inhouse Employer | Central | Hotel | SO | SS | Pioneer |
| SMS Investigation & Security Pte Ltd | Central | Condominium | SS | SS | Pioneer |
| GATES PCM Integrated Services Pte Ltd | Central | Gov Building | SO | SS | Pioneer |
| 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 |
