| SMS Security | East | Mix-Development | SSO | SSS | Aljunied |
| Security & Risk Solutions Pte. Ltd. | Central | - | Office Team | SSS | Jurong East |
| Fervour Pte Ltd | North | Healthcare | SSO | SSO | Admiralty |
| Inhouse Employer at Changi | East | Commercial | OE | SSO | Buangkok |
| Premier Security Co-operative Ltd | East | In-House | Office Team | SSO | Hougang |
| G4S Secure Solutions (Singapore) Pte Ltd | East | Commercial | SSO | SSO | Tampines |
| Excellent Security & Safety Pte Ltd | Central | Industrial / Factory | SSO | SSO | Toa Payoh |
| Primesafe Security & Investigation Pte Ltd | Central | Condominium | SSO | SSO | Bedok |
| Metropolis Security Systems Pte Ltd | Island Wide | Mix-Development | SSO | SSO | Bedok |
| Inhouse Employer at Changi | East | Commercial | OE | SSO | Buangkok |
| SMS Security | North | Condominium | SO | SSO | Woodlands |
| Security & Risk Solutions Pte. Ltd. | Island Wide | - | OE | SSO | Marsiling |
| Premier Security Co-operative Ltd | East | In-House | Office Team | SSO | Marsiling |
| Security & Risk Solutions Pte. Ltd. | Central | - | Office Team | SSO | Marsiling |
| ARSLAN SRS Singapore | South | In-House | RSOC/CAMS Op | SSO | Marsiling |
| Force-One Security | North | Data Centre | OE | SSO | Marsiling |
| Force-One Security | Central | Commercial | SO | SSO | Marsiling |
| AGS Integration Pte. Ltd. | West | In-House | SS | SSO | Choa Chu Kang |
| Aigle Security Pte Ltd | Central | Condominium | SO | SSO | Woodlands |
| Aigle Security Pte Ltd | Central | Condominium | SO | SSO | Woodlands |
| Trek Investigations & Security Management Services Pte Ltd | Central | Condominium | SO | SSO | Woodlands |
| William Secure Solutions Pte Ltd | West | Condominium | SO | SSO | Woodlands |
| Peregrine Security Pte. Ltd. | North | Commercial | SSO | SSO | Ang Mo Kio |
| Union Security Services Pte. Ltd. | North | Commercial | SSO | SSO | Ang Mo Kio |
| Peregrine Security Pte. Ltd. | North | Healthcare | SSO | SSO | Ang Mo Kio |
