| Guthrie FMC Security Pte Ltd | Island Wide | - | OE | SSS | Sengkang |
| AGS Integration Pte. Ltd. | Island Wide | - | OE | SSS | Sengkang |
| Securus 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 |
| Regal Security & Fire Management Services Pte Ltd | Central | - | OE | SSS | Sengkang |
| Securus Pte Ltd | Island Wide | - | OE | SSS | Sengkang |
| Triple ‘S’ Protection Pte Ltd | Island Wide | - | OE | SSS | Sengkang |
| Trek Investigations & Security Management Services Pte Ltd | Island Wide | - | OE | SSS | Sengkang |
| G4S Secure Solutions (Singapore) Pte Ltd | Island Wide | - | OE | SSS | Sengkang |
| G4S Secure Solutions (Singapore) Pte Ltd | Island Wide | - | OE | SSS | Sengkang |
| SMS Investigation & Security Pte Ltd | Central | - | OM | SSS | Sengkang |
| GoMobile Security Solutions Pte Ltd | Island Wide | - | OM | SSS | Sengkang |
| Fervour Pte Ltd | Island Wide | - | OM | SSS | Sengkang |
| Securus Pte Ltd | Island Wide | - | OM | SSS | Sengkang |
| Triple ‘S’ Protection Pte Ltd | Island Wide | - | OM | SSS | Sengkang |
| Soverus Pte Ltd | Island Wide | - | SSS | SSS | Sengkang |
| Titanium Safety & Security Pte Ltd | Island Wide | - | OE | SS | Admiralty |
| SMS Investigation & Security Pte Ltd | Central | - | OM | SO | Pasir Ris |
| Soverus Pte Ltd | Island Wide | - | OE | SSO | Woodlands |
| Dragnet Smartech Security Pte Ltd | Central | - | Security Mgt | Nil | Tampines |
| SATS Ltd | Island Wide | - | OM | Nil | Tampines East |
| 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 |
