| Ranger Investigation & Security Services Pte Ltd | West | Construction | SO | SO | Bukit Batok |
| Inhouse Employer | South | In-House | SSO | SSS | MacPherson |
| G4S Secure Solutions (Singapore) Pte Ltd | East | In-House | SSO | SO | Mountbatten |
| Peregrine Security Pte. Ltd. | West | Industrial / Factory | SSO | SSO | Tuas Link |
| First Security & Private Investigation (Singapore) Pte Ltd | Central | Hotel | SSO | SSO | - |
| Elid Technology International Pte Ltd | West | Condominium | SO | SO | Choa Chu Kang |
| Crowne Plaza Changi Airport | East | In-House | OE | SSS | Bedok |
| Star Security Services | Island Wide | - | Security Mgt | CSO | Boon Lay |
| Inhouse Employer | North | In-House | SO | CSO | Yishun |
| Reachfield Security & Safety Management Pte Ltd | Central | School | Security Mgt | SS | Bukit Panjang |
| Aedge Services Pte Ltd | West | Industrial / Factory | SO | SO | Bukit Gombak |
| Excellent Security & Safety Pte Ltd | North | Data Centre | SO | SS | Buangkok |
| Fervour Pte Ltd | Island Wide | - | OM | SS | Choa Chu Kang |
| York Hotel (Private) Limited | Central | In-House | OM | CSO | Marsiling |
| Certis Group | Central | Commercial | SO | SO | Bukit Batok |
| Inhouse Employer | East | In-House | SO | SO | Woodleigh |
| Inhouse Employer | West | In-House | OM | CSO | Choa Chu Kang |
| Star Security Services | Island Wide | - | Security Mgt | SSO | Hougang |
| Regal Security & Fire Management Services Pte Ltd | Central | In-House | SSO | SS | Bedok Reservoir |
| Inhouse Employer | West | In-House | OM | SSS | Tampines |
| JEN Singapore Tanglin by Shangri-La | Central | In-House | OE | SO | Bukit Batok |
| ProtectPlus Pte Ltd | Island Wide | - | OE | CSO | Marsiling |
| FormTeam Consultancy Pte Ltd | Island Wide | - | OE | SS | Sengkang |
| Elid Technology International Pte Ltd | Central | Hotel | SSO | SSO | Redhill |
| York Hotel (Private) Limited | Central | In-House | OM | SS | - |
