| Crowne Plaza Changi Airport | East | In-House | OE | SO | Yishun |
| SATS Ltd | Island Wide | - | Inves | SO | Hougang |
| Force-One Security | Central | Commercial | SO | SO | Yishun |
| G4S Secure Solutions (Singapore) Pte Ltd | North | School | SO | SO | Bras Basah |
| Inhouse Employer | West | Industrial / Factory | SO | SO | Bras Basah |
| G4S Secure Solutions (Singapore) Pte Ltd | Central | School | SO | SO | Bras Basah |
| Inhouse Employer | South | In-House | SO | SO | Bras Basah |
| Inhouse Employer | Central | Hotel | SO | SO | Bras Basah |
| PICO Guards Pte Ltd | North | Industrial / Factory | SO | SO | Bras Basah |
| Fervour Pte Ltd | West | School | SO | SO | Bras Basah |
| RAS Security Pte Ltd | North | Commercial | SSO | SO | Clementi |
| RAS Security Pte Ltd | North | Commercial | SSO | SO | Clementi |
| First Security & Private Investigation (Singapore) Pte Ltd | North | Industrial / Factory | SO | SO | Potong Pasir |
| Eagle I Security Services Pte Ltd | East | Condominium | SSO | SO | Pasir Ris |
| Horus I (Private Limited) | South | Retail | SO | SO | Pasir Ris |
| Horus I (Private Limited) | South | Retail | SO | SO | Pasir Ris |
| Securus Pte Ltd | Island Wide | - | OM | SO | Tampines |
| SATS Ltd | Island Wide | - | OM | SO | Tampines |
| Total Protection Solutions Pte Ltd | Island Wide | - | OM | SO | Tampines |
| Acestes Pte Ltd | Island Wide | - | OM | SO | Tampines |
| Fervour Pte Ltd | Island Wide | - | OM | SO | Tampines |
| Danmax Security Management Pte Ltd | East | Industrial / Factory | SSO | SO | Tampines |
| SMS Investigation & Security Pte Ltd | Central | Commercial | SO | SO | Serangoon |
| G4S Secure Solutions (Singapore) Pte Ltd | South | - | SO | SO | Bras Basah |
| Inhouse Employer | West | Industrial / Factory | SO | SO | Sembawang |
