| Primesafe Security & Investigation Pte Ltd | Island Wide | - | OE | SS | Bukit Panjang |
| Union Security Services Pte. Ltd. | East | Data Centre | SS | SS | Yishun |
| Inhouse Employer at Changi | East | Commercial | OE | SSS | Pasir Ris |
| Union Security Services Pte. Ltd. | East | Data Centre | SS | SO | Woodlands |
| AETOS Holdings Pte Ltd | West | - | SO | SO | Sengkang |
| Reachfield Security & Safety Management Pte Ltd | East | School | SO | SO | Punggol |
| Bulls-Eye Security Services Pte Ltd | Central | Commercial | SS | SS | Woodlands |
| Acestes Pte Ltd | Central | - | Security Mgt | SS | Bukit Batok |
| Royal Security Management Services Pte Ltd | Island Wide | - | OE | SS | Admiralty |
| Force-One Security | North | Data Centre | SS | SSO | Tampines |
| ARSLAN SRS Singapore | South | In-House | RSOC/CAMS Op | SSO | Bukit Batok |
| Titanium Safety & Security Pte Ltd | Island Wide | - | OE | SSS | Sengkang |
| Inhouse Employer | Central | Mix-Development | OE | SSS | Tampines West |
| G4S Secure Solutions (Singapore) Pte Ltd | Island Wide | - | OE | Nil | Dover |
| Inhouse Employer | East | School | SO | SO | Bedok |
| Crowne Plaza Changi Airport | East | In-House | OE | SSO | Simei |
| Force-One Security | North | Data Centre | SS | SSS | Yishun |
| Young Women's Christian Association of Singapore | Central | In-House | Security Mgt | SSO | Hougang |
| SMS Investigation & Security Pte Ltd | Central | Condominium | SS | SS | Marsiling |
| G4S Secure Solutions (Singapore) Pte Ltd | South | - | SO | SO | Bukit Batok |
| Aedge Services Pte Ltd | Island Wide | - | OM | SS | Pioneer |
| G4S Secure Solutions (Singapore) Pte Ltd | East | Commercial | SSO | SSO | Pasir Ris |
| G4S Secure Solutions (Singapore) Pte Ltd | Central | In-House | SSO | SSO | Bukit Batok |
| Triple ‘S’ Protection Pte Ltd | Central | Commercial | SSO | SS | Buona Vista |
| Malaysia Dairy Industries Pte Ltd | East | Commercial | OE | SSO | Hougang |
