| Prosec Services Pte Ltd | East | Retail | SO | SO | Pasir Ris |
| Union Security Services Pte. Ltd. | East | Data Centre | SO | SO | Pasir Ris |
| Royal Security Management Services Pte Ltd | East | Commercial | SO | SO | Pasir Ris |
| G4S Secure Solutions (Singapore) Pte Ltd | East | Commercial | SO | SO | Pasir Ris |
| A-SAT Pte Ltd | East | Construction | SO | SO | Pasir Ris |
| Eagle I Security Services Pte Ltd | East | Industrial / Factory | SO | SO | Pasir Ris |
| Ranger Investigation & Security Services Pte Ltd | North | Construction | SO | SO | Pasir Ris |
| Prosec Services Pte Ltd | East | Retail | SO | SO | Pasir Ris |
| Inhouse Employer | North | In-House | SO | SO | Pasir Ris |
| Interlocal Exim Pte Ltd | Central | In-House | SO | SS | Hougang |
| Inhouse Employer | South | Hotel | SO | SO | Bedok |
| ONE°15 Marina Sentosa Cove, Singapore | South | Country Club | SO | SO | Bedok |
| Artyzen Singapore | Central | Hotel | SO | SO | Bedok |
| Royal Security Management Services Pte Ltd | West | Dormitory | SO | SO | - |
| Interlocal Exim Pte Ltd | Central | In-House | SO | SS | Hougang |
| Inhouse Employer | East | In-House | SO | SSO | Pasir Ris |
| Horus I (Private Limited) | South | Retail | SO | SSO | Punggol |
| Securitas Guarding Services (Singapore) Pte Ltd | North | Data Centre | SO | SSO | Tampines |
| Securitas Guarding Services (Singapore) Pte Ltd | East | Data Centre | SO | SSO | Tampines |
| G4S Secure Solutions (Singapore) Pte Ltd | Central | School | SO | SO | Clementi |
| G4S Secure Solutions (Singapore) Pte Ltd | South | School | SO | SO | Clementi |
| Royal Security Management Services Pte Ltd | North | Industrial / Factory | SO | SSO | Woodlands |
| Force-One Security | Central | Commercial | SO | SSO | Woodlands |
| Premier Security Co-operative Ltd | Central | Data Centre | SO | SSS | Ang Mo Kio |
| Certis Group | Central | Commercial | SO | SSO | - |
