| Inhouse Employer | North | In-House | SO | SSO | Woodlands |
| Inhouse Employer | North | In-House | SO | SSO | Yishun |
| Excellent Security & Safety Pte Ltd | Central | Industrial / Factory | SSO | SSO | Ang Mo Kio |
| Acestes Pte Ltd | Island Wide | - | Security Mgt | SSO | Tampines |
| G4S Secure Solutions (Singapore) Pte Ltd | East | Commercial | SSO | SSO | Pasir Ris |
| Premier Security Co-operative Ltd | East | Commercial | SSO | SSO | Pasir Ris |
| Securus Pte Ltd | Island Wide | - | OE | SSO | Simei |
| Excellent Security & Safety Pte Ltd | Central | Industrial / Factory | SSO | SSO | Toa Payoh |
| Securus Pte Ltd | Island Wide | - | OE | SSO | Simei |
| Royal Security Management Services Pte Ltd | Island Wide | - | OE | SSO | Simei |
| Force-One Security | North | Data Centre | OE | SSO | Simei |
| Jasa Investigation & Security Services Pte Ltd | West | Healthcare | SSO | SSO | Bukit Gombak |
| Force-One Security | North | Data Centre | SO | SSO | Marsiling |
| Crowne Plaza Changi Airport | East | Hotel | Security Mgt | SSO | Simei |
| Force-One Security | North | Data Centre | OE | SSO | Simei |
| G4S Secure Solutions (Singapore) Pte Ltd | East | Commercial | SSO | SSO | Simei |
| Prosegur Singapore Pte Ltd | East | Data Centre | SSO | SSO | Potong Pasir |
| Inhouse Employer | West | In-House | SO | SSO | Bukit Gombak |
| Triple ‘S’ Protection Pte Ltd | North | Depot | SSO | SSO | Choa Chu Kang |
| Malaysia Dairy Industries Pte Ltd | East | Commercial | OE | SSO | Sengkang |
| Certis Group | Island Wide | - | SSO | SSO | Marsiling |
| Inhouse Employer | West | In-House | SO | SSO | Bukit Gombak |
| Inhouse Employer | West | In-House | SO | SSO | Bukit Gombak |
| First Security & Private Investigation (Singapore) Pte Ltd | North | Condominium | SO | SSO | Woodlands |
| Inhouse Employer | West | In-House | SO | SSO | Bukit Gombak |
