| TwinRock Global | West | Condominium | SSO | SSS | Jurong East |
| AGS Integration Pte. Ltd. | West | In-House | SS | SSO | Choa Chu Kang |
| AGS Integration Pte. Ltd. | West | In-House | SS | Nil | Yew Tee |
| William Secure Solutions Pte Ltd | West | Condominium | SO | SSO | Woodlands |
| Inhouse Employer | West | School | OE | SSS | Marsiling |
| 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 |
| 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 |
| Inhouse Employer | West | In-House | OM | CSO | Sengkang |
| SECOM Smart (Singapore) Pte. Ltd. | West | Commercial | SSO | SO | Bukit Batok |
| Prospect Protection Pte Ltd | West | Industrial / Factory | SS | SS | Tuas Link |
| G4S Secure Solutions (Singapore) Pte Ltd | West | Industrial / Factory | SS | SSS | Jurong East |
| AGS Integration Pte. Ltd. | West | In-House | SS | SSS | Choa Chu Kang |
| AETOS Holdings Pte Ltd | West | - | SO | SS | Buangkok |
| Securitas Guarding Services (Singapore) Pte Ltd | West | Commercial | SSO | SSO | - |
| AGS Integration Pte. Ltd. | West | In-House | SS | SS | Woodlands |
| Titanium Safety & Security Pte Ltd | West | Dormitory | SSO | SO | Woodlands |
| Titanium Safety & Security Pte Ltd | West | Dormitory | SSO | SS | Woodlands |
| AGS Integration Pte. Ltd. | West | In-House | SS | SS | Woodlands |
| Storm Protection Pte Ltd | West | Industrial / Factory | SS | SS | Bukit Panjang |
| Triple ‘S’ Protection Pte Ltd | West | Commercial | SS | SS | Bukit Panjang |
