| SECOM Smart (Singapore) Pte. Ltd. | West | Commercial | SSO | SSO | Choa Chu Kang |
| RAS Security Pte Ltd | North | Commercial | SSO | SSO | Commonwealth |
| PICO Guards Pte Ltd | Central | School | SSO | SSO | Commonwealth |
| Pan Pacific Singapore | South | In-House | Security Mgt | SSO | Hougang |
| Inhouse Employer | North | Commercial | SO | SSO | Choa Chu Kang |
| Inhouse Employer | Island Wide | Construction | OM | SSO | Hougang |
| Crowne Plaza Changi Airport | East | Hotel | Security Mgt | SSO | Hougang |
| GoMobile Security Solutions Pte Ltd | North | Industrial / Factory | SO | SSO | Sembawang |
| Inhouse Employer | Central | Healthcare | OE | SSO | Hougang |
| Strive Security Pte Ltd | West | Dormitory | SO | SSO | Choa Chu Kang |
| G4S Secure Solutions (Singapore) Pte Ltd | South | Commercial | SSO | SSO | Boon Lay |
| Grand Copthorne Waterfront Hotel | Central | In-House | SSO | SSO | Boon Lay |
| Uniforce Security Services Pte Ltd | Island Wide | - | OE | SSO | Boon Lay |
| JEN Singapore Tanglin by Shangri-La | Central | In-House | OE | SSO | Boon Lay |
| Inhouse Employer | West | In-House | OM | SSO | Boon Lay |
| AGS Integration Pte. Ltd. | West | In-House | SS | SSO | Boon Lay |
| Ranger Investigation & Security Services Pte Ltd | Island Wide | In-House | SS | SSO | Boon Lay |
| AGS Integration Pte. Ltd. | West | In-House | SS | SSO | Boon Lay |
| Acestes Pte Ltd | Island Wide | - | Security Mgt | SSO | Hougang |
| Inhouse Employer | Central | In-House | SS | SSO | Hougang |
| Aspectus Consultancy Pte Ltd | North | Depot | SO | SSO | Yishun |
| RAS Security Pte Ltd | North | Commercial | SSO | SSO | Bukit Batok |
| Shine Security Agency Pte Ltd | Island Wide | - | OE | SSO | Boon Lay |
| ESA Security Pte Ltd | South | Hotel | SSO | SSO | Tuas Link |
| Inhouse Employer | East | School | SO | SSO | Punggol |
