| G4S Secure Solutions (Singapore) Pte Ltd | West | Industrial / Factory | SO | SO | Boon Lay |
| G4S Secure Solutions (Singapore) Pte Ltd | West | Industrial / Factory | SO | SO | Boon Lay |
| TwinRock Global | West | Industrial / Factory | SO | SO | Boon Lay |
| Metropolis Security Systems Pte Ltd | North | Mix-Development | SO | SO | Yishun |
| G4S Secure Solutions (Singapore) Pte Ltd | West | Construction | SO | SO | - |
| Aspectus Consultancy Pte Ltd | East | School | SO | SO | Choa Chu Kang |
| Securus Pte Ltd | East | Commercial | SO | SO | Sengkang |
| Regal Security & Fire Management Services Pte Ltd | West | Industrial / Factory | SO | SO | Choa Chu Kang |
| Regal Security & Fire Management Services Pte Ltd | West | Industrial / Factory | SO | SO | Choa Chu Kang |
| Inhouse Employer | East | School | SO | SO | Pasir Ris |
| Elitez Security Pte Ltd | West | Industrial / Factory | SO | SO | Choa Chu Kang |
| Chang & Chang Security Management Pte. Ltd. | West | Condominium | SO | SO | Choa Chu Kang |
| Ademco Security Pte Ltd | West | Mix-Development | SO | SO | Choa Chu Kang |
| Chang & Chang Security Management Pte. Ltd. | West | Condominium | SO | SO | Choa Chu Kang |
| Metropolis Security Systems Pte Ltd | West | Industrial / Factory | SO | SO | Choa Chu Kang |
| Metropolis Security Systems Pte Ltd | North | Mix-Development | SO | SO | Yishun |
| Hawkeye Security Solutions Pte Ltd | North | Commercial | SO | SO | Yishun |
| Metropolis Security Systems Pte Ltd | North | Condominium | SO | SO | Yishun |
| Crowne Plaza Changi Airport | East | Hotel | SO | SO | Tampines |
| SECOM Smart (Singapore) Pte. Ltd. | West | Commercial | SSO | SO | Bukit Batok |
| SMS Security | Central | Retail / Mall | SO | SO | Toa Payoh |
| William Secure Solutions Pte Ltd | East | Healthcare | SO | SO | Hougang |
| Jasa Investigation & Security Services Pte Ltd | East | Industrial / Factory | SO | SO | Hougang |
| TwinRock Global | East | Condominium | SO | SO | Hougang |
| Hawkeye Security Solutions Pte Ltd | North | Commercial | SO | SO | Hougang |
