| SMS Investigation & Security Pte Ltd | Central | Condominium | SS | SS | Ang Mo Kio |
| FormTeam Consultancy Pte Ltd | Island Wide | - | OE | Nil | Ang Mo Kio |
| Securus Pte Ltd | Island Wide | - | OE | SS | Ang Mo Kio |
| ProtectPlus Pte Ltd | Island Wide | - | OE | Nil | Ang Mo Kio |
| Uniforce Security Services Pte Ltd | Island Wide | - | OE | Nil | Ang Mo Kio |
| SATS Ltd | Island Wide | - | OM | Nil | Ang Mo Kio |
| Overseas (Singapore) Security & Private Investigation Consultants Pte Ltd | Island Wide | - | OE | Nil | Ang Mo Kio |
| TwinRock Global | Central | - | Security Mgt | Nil | Ang Mo Kio |
| Dragnet Smartech Security Pte Ltd | Central | - | Security Mgt | Nil | Ang Mo Kio |
| Star Security Services | Island Wide | - | Security Mgt | 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 |
| Inhouse Employer | Central | Country Club | OM | SS | Ang Mo Kio |
| Trek Investigations & Security Management Services Pte Ltd | Island Wide | - | OE | Nil | Ang Mo Kio |
| GoMobile Security Solutions Pte Ltd | Island Wide | - | OM | Nil | Ang Mo Kio |
| Triple ‘S’ Protection Pte Ltd | Island Wide | - | OM | Nil | Ang Mo Kio |
| Securus Pte Ltd | Island Wide | - | OM | Nil | Ang Mo Kio |
| SATS Ltd | Island Wide | - | OM | Nil | Ang Mo Kio |
| Total Protection Solutions Pte Ltd | Island Wide | - | OM | Nil | Ang Mo Kio |
| SMS Investigation & Security Pte Ltd | Central | - | OM | Nil | Ang Mo Kio |
| Uniforce Security Services Pte Ltd | Island Wide | - | OE | Nil | Ang Mo Kio |
