| William Secure Solutions Pte Ltd | West | Industrial / Factory | SSO | SO | Boon Lay |
| Triple ‘S’ Protection Pte Ltd | Central | Industrial / Factory | SSO | SO | Boon Lay |
| Ademco Security Pte Ltd | West | Industrial / Factory | SSO | SO | Boon Lay |
| G4S Secure Solutions (Singapore) Pte Ltd | West | School | SSO | SO | Boon Lay |
| G4S Secure Solutions (Singapore) Pte Ltd | East | In-House | SSO | SO | Boon Lay |
| Jasa Investigation & Security Services Pte Ltd | West | Industrial / Factory | SSO | SO | Boon Lay |
| PICO Guards Pte Ltd | West | Industrial / Factory | SSO | SO | Boon Lay |
| RAS Security Pte Ltd | North | Commercial | SSO | SO | Boon Lay |
| RAS Security Pte Ltd | East | Commercial | SSO | SO | Tampines |
| RAS Security Pte Ltd | East | Commercial | SSO | SO | Tampines |
| Acestes Pte Ltd | Island Wide | - | OM | SO | Tampines East |
| RAS Security Pte Ltd | East | Commercial | SO | SO | Tampines |
| Union Security Services Pte Ltd | North | Healthcare | SO | SO | Woodlands South |
| Inhouse Employer | Island Wide | Construction | OM | SO | Tampines |
| Hotel Grand Central | Central | Hotel | Security Mgt | SO | Woodlands |
| Inhouse Employer | West | School | OE | SO | Woodlands |
| Concorde Security Pte Ltd | Island Wide | - | OE | SO | Yishun |
| Premier Security Co-operative Ltd | East | Commercial | SO | SO | Simei |
| Royal Security Management Services Pte Ltd | East | Gov Building | SO | SO | Simei |
| Premier Security Co-operative Ltd | East | Commercial | SO | SO | Simei |
| Unique Security Services Pte Ltd | East | Condominium | SO | SO | Simei |
| Metropolis Security Systems Pte Ltd | East | Commercial | SO | SO | Simei |
| King's Security and Safety Management Pte Ltd | East | Commercial | SO | SO | Simei |
| Uniforce Security Services Pte Ltd | East | Commercial | SO | SO | Simei |
| Jasa Investigation & Security Services Pte Ltd | East | Commercial | SO | SO | Simei |
