| Prosec Services Pte Ltd | East | Data Centre | SO | SO | Pasir Ris |
| Eagle I Security Services Pte Ltd | East | Commercial | SO | SO | Pasir Ris |
| Overseas (Singapore) Security & Private Investigation Consultants Pte Ltd | East | Dormitory | SO | SO | Pasir Ris |
| Prosec Services Pte Ltd | Central | Data Centre | SO | SO | Pasir Ris |
| Inhouse Employer | West | Industrial / Factory | SO | SO | Marsiling |
| Inhouse Employer | East | In-House | SO | SO | Pasir Ris |
| Prospect Protection Pte Ltd | East | Industrial / Factory | SO | SO | Pasir Ris |
| Force-One Security | Central | Commercial | SO | SS | Toa Payoh |
| Force-One Security | Central | Commercial | SO | SS | Toa Payoh |
| Inhouse Employer | East | School | SO | SO | Pasir Ris |
| Inhouse Employer | East | School | SO | SO | Pasir Ris |
| SMS Security | Central | Industrial / Factory | SO | SO | Potong Pasir |
| Fervour Pte Ltd | Central | Data Centre | SO | SO | Potong Pasir |
| Concorde Security Pte Ltd | East | Commercial | SO | SO | Punggol |
| Prosec Services Pte Ltd | East | Data Centre | SO | SO | Simei |
| Security & Risk Solutions Pte. Ltd. | Central | Commercial | SO | SO | Potong Pasir |
| Securitas Guarding Services (Singapore) Pte Ltd | East | Data Centre | SO | SS | Aljunied |
| Aspectus Consultancy Pte Ltd | North | Depot | SO | SSO | Yishun |
| Jasa Investigation & Security Services Pte Ltd | East | Healthcare | SO | SO | Pasir Ris |
| Aigle Security Pte Ltd | East | Commercial | SO | SO | Pasir Ris |
| Inhouse Employer | East | In-House | SO | SO | Pasir Ris |
| Inhouse Employer | East | School | SO | SO | Pasir Ris |
| Eagle I Security Services Pte Ltd | East | - | SO | SO | Pasir Ris |
| Inhouse Employer | East | School | SO | SSO | Punggol |
| Metropolis Security Systems Pte Ltd | Central | Industrial / Factory | SO | SSO | Yishun |
