| Crowne Plaza Changi Airport | East | Hotel | SSO | SSO | Jurong East |
| G4S Secure Solutions (Singapore) Pte Ltd | East | Commercial | SSO | SSO | Jurong East |
| Crowne Plaza Changi Airport | East | Hotel | SSO | SSO | Jurong East |
| JEN Singapore Tanglin by Shangri-La | Central | In-House | OM | SSO | Simei |
| Malaysia Dairy Industries Pte Ltd | East | Commercial | OE | SSO | Sengkang |
| Premier Security Co-operative Ltd | East | In-House | Office Team | SSO | Sengkang |
| Inhouse Employer | Central | Hotel | SO | SSO | - |
| Union Security Services Pte. Ltd. | East | Data Centre | SS | SSO | Jurong East |
| ProtectPlus Pte Ltd | Island Wide | - | OE | SSO | Jurong East |
| Inhouse Employer | South | School | SO | SSO | - |
| TwinRock Global | Central | - | SO | SSO | Bukit Batok |
| Peregrine Security Pte. Ltd. | Central | - | SSO | SSO | Bukit Batok |
| Union Security Services Pte. Ltd. | North | - | SSO | SSO | Bukit Batok |
| Brink's Singapore Pte Ltd | East | - | SO | SSO | Bukit Batok |
| Inhouse Employer | Central | Hotel | SO | SSO | Bukit Batok |
| G4S Secure Solutions (Singapore) Pte Ltd | South | - | SO | SSO | Bukit Batok |
| Inhouse Employer | South | School | SO | SSO | Bukit Batok |
| Certis Group | Central | Commercial | SO | SSO | Bukit Batok |
| ONE°15 Marina Sentosa Cove, Singapore | South | Country Club | SO | SSO | Bukit Batok |
| Titanium Safety & Security Pte Ltd | North | In-House | SSO | SSO | Bukit Batok |
| Pedro Investigations & Security Services Pte. Ltd. | Central | - | SSO | SSO | Bukit Batok |
| Titanium Safety & Security Pte Ltd | North | In-House | SSO | SSO | Bukit Batok |
| G4S Secure Solutions (Singapore) Pte Ltd | South | Commercial | SSO | SSO | Bukit Batok |
| Inhouse Employer | North | In-House | SO | SSO | Bukit Batok |
| RAS Security Pte Ltd | North | Commercial | SSO | SSO | Bukit Batok |
