| Aspectus Consultancy Pte Ltd | North | Industrial / Factory | SO | SSO | Yishun |
| Premier Security Co-operative Ltd | North | Commercial | SO | SSO | Yishun |
| RAS Security Pte Ltd | East | Commercial | SO | SO | Bedok |
| Trek Investigations & Security Management Services Pte Ltd | Central | Commercial | SO | CSO | Ang Mo Kio |
| AGS Integration Pte. Ltd. | Central | Commercial | SO | CSO | Ang Mo Kio |
| Pan Pacific Serviced Suites Beach Road | South | In-House | SO | SSO | Khatib |
| Pan Pacific Serviced Suites Beach Road | South | In-House | SO | SSO | Khatib |
| SEOMEO RELC | Central | In-House | SO | SSO | Khatib |
| Inhouse Employer | Central | In-House | SO | SSO | Khatib |
| Metropolis Security Systems Pte Ltd | West | Condominium | SO | SO | Bukit Panjang |
| Triple ‘S’ Protection Pte Ltd | North | Shipyard / Port | SO | SSO | Tampines |
| Force-One Security | Central | Commercial | SO | SSO | Tampines |
| Aspectus Consultancy Pte Ltd | North | Depot | SO | SO | Yishun |
| Elid Technology International Pte Ltd | North | Condominium | SO | SO | Yishun |
| Elid Technology International Pte Ltd | North | Condominium | SO | SO | Yishun |
| Ascentiaa Security Management Pte Ltd | North | Condominium | SO | SO | Yishun |
| Reachfield Security & Safety Management Pte Ltd | North | School | SO | SO | Yishun |
| Triple ‘S’ Protection Pte Ltd | North | Shipyard / Port | SO | SO | Yishun |
| PICO Guards Pte Ltd | North | School | SO | SO | Yishun |
| Securus Pte Ltd | North | Commercial | SO | SO | Yishun |
| Aspectus Consultancy Pte Ltd | North | Industrial / Factory | SO | SO | Yishun |
| Ademco Security Pte Ltd | North | Industrial / Factory | SO | SO | Yishun |
| Premier Security Co-operative Ltd | North | Commercial | SO | SO | Yishun |
| Certis Group | North | - | SO | SO | Yishun |
| Securus Pte Ltd | North | Commercial | SO | SO | Yishun |
