| Legion Protection Pte Ltd | Island Wide | - | OE | SSS | Tampines West |
| ProtectPlus Pte Ltd | Island Wide | - | OE | SSS | Tampines West |
| Uniforce Security Services Pte Ltd | Island Wide | - | OE | SSS | Tampines West |
| Peregrine Security Pte. Ltd. | Island Wide | - | OE | SSS | Tampines West |
| Royal Security Management Services Pte Ltd | Island Wide | - | OE | SSS | Tampines West |
| Ascentiaa Security Management Pte Ltd | Island Wide | - | OE | SSS | Tampines West |
| Trek Investigations & Security Management Services Pte Ltd | Island Wide | - | OE | CSO | Bedok |
| Soverus Pte Ltd | Island Wide | - | OE | CSO | Bedok |
| Eagle I Security Services Pte Ltd | Island Wide | - | OE | CSO | Bedok |
| Legion Protection Pte Ltd | Island Wide | - | OE | CSO | Bedok |
| ProtectPlus Pte Ltd | Island Wide | - | OE | Nil | Ang Mo Kio |
| Uniforce Security Services Pte Ltd | Island Wide | - | OE | Nil | Ang Mo Kio |
| Overseas (Singapore) Security & Private Investigation Consultants Pte Ltd | Island Wide | - | OE | Nil | Ang Mo Kio |
| Titanium Safety & Security Pte Ltd | Island Wide | - | OE | Nil | Ang Mo Kio |
| AGS Integration Pte. Ltd. | Island Wide | - | OE | Nil | Ang Mo Kio |
| Legion Protection Pte Ltd | Island Wide | - | OE | Nil | Ang Mo Kio |
| PICO Guards Pte Ltd | Island Wide | - | OE | Nil | Ang Mo Kio |
| Royal Security Management Services Pte Ltd | Island Wide | - | OE | Nil | Ang Mo Kio |
| Trek Investigations & Security Management Services Pte Ltd | Island Wide | - | OE | Nil | Ang Mo Kio |
| Overseas (Singapore) Security & Private Investigation Consultants Pte Ltd | Island Wide | - | OE | SSS | Yishun |
| G4S Secure Solutions (Singapore) Pte Ltd | Island Wide | - | OE | SSS | Yishun |
| AGS Integration Pte. Ltd. | Island Wide | - | OE | SSS | Yishun |
| AGS Integration Pte. Ltd. | Island Wide | - | OE | SSS | Yishun |
| Reachfield Security & Safety Management Pte Ltd | Island Wide | Commercial | OE | SSS | Yishun |
| Overseas (Singapore) Security & Private Investigation Consultants Pte Ltd | Island Wide | - | OE | SSS | Yishun |
