| Triple ‘S’ Protection Pte Ltd | Island Wide | - | OM | SS | Punggol |
| Fervour Pte Ltd | Island Wide | - | OM | SS | Punggol |
| Overseas (Singapore) Security & Private Investigation Consultants Pte Ltd | Island Wide | - | OE | SS | Punggol |
| Orchid Hotel Private Limited | Central | In-House | OM | SSS | Punggol |
| Prosegur Singapore Pte Ltd | Island Wide | - | OE | SSS | Punggol |
| PICO Guards Pte Ltd | East | Industrial / Factory | SO | SS | Punggol |
| Concorde Security Pte Ltd | East | Commercial | SO | SO | Punggol |
| Inhouse Employer | Central | Country Club | OM | SS | Punggol |
| Inhouse Employer | East | School | SO | SSO | Punggol |
| RAS Security Pte Ltd | North | Commercial | SSO | SS | Punggol |
| RAS Security Pte Ltd | North | Commercial | SSO | SS | Punggol |
| Reachfield Security & Safety Management Pte Ltd | East | School | SO | SO | Punggol |
| Jasa Investigation & Security Services Pte Ltd | East | Healthcare | SO | SO | Punggol |
| RAS Security Pte Ltd | Island Wide | Commercial | SSO | SO | Punggol |
| G4S Secure Solutions (Singapore) Pte Ltd | South | - | SO | SO | Punggol |
| Reachfield Security & Safety Management Pte Ltd | East | School | SO | SO | Punggol |
| G4S Secure Solutions (Singapore) Pte Ltd | East | Commercial | SSO | SSO | Punggol |
| Acestes Pte Ltd | Central | - | Security Mgt | SSO | Punggol |
| SATS Ltd | Island Wide | - | OM | Nil | Punggol |
| Sands Global Pte Ltd | East | Dormitory | SO | SS | Punggol |
| Inhouse Employer | East | In-House | SO | SO | Punggol |
| First Security & Private Investigation (Singapore) Pte Ltd | South | Commercial | SO | SO | Punggol |
| Inhouse Employer | Central | In-House | SO | SO | Punggol |
| Certis Group | Central | Healthcare | SO | SO | Punggol |
| Dragnet Smartech Security Pte Ltd | Central | Commercial | SO | SO | Punggol |
