| Inhouse Employer | Central | Hotel | SO | SSO | Bukit Batok |
| Riverfort Pte Ltd | Central | Hotel | SO | SSO | Bukit Batok |
| TwinRock Global | Central | - | SO | SSO | Bukit Batok |
| Artyzen Singapore | Central | Hotel | SO | SSO | Bukit Batok |
| G4S Secure Solutions (Singapore) Pte Ltd | Central | Retail | SO | SO | - |
| GWC Commercial Pte. Ltd. | Central | Commercial | SO | SSO | - |
| Securus Pte Ltd | Island Wide | Commercial | SO | SO | Tampines |
| Royal Security Management Services Pte Ltd | East | Commercial | SO | SO | Tampines |
| Securus Pte Ltd | Island Wide | Commercial | SO | SO | Punggol |
| Prosec Services Pte Ltd | East | Data Centre | SO | SO | Tampines |
| Securus Pte Ltd | Island Wide | Commercial | SO | SO | Punggol |
| Chang & Chang Security Management Pte. Ltd. | East | Condominium | SO | SO | Tampines |
| TwinRock Global | East | Retail | SO | SO | Tampines |
| Aigle Security Pte Ltd | East | Condominium | SO | SO | Tampines |
| Straits Retail Property Management Services Pte. Ltd. | Central | In-House | SO | SS | Pioneer |
| Inhouse Employer | Central | Hotel | SO | SS | Pioneer |
| Focal Investigation & Security Agency Pte Ltd | South | Commercial | SO | SO | Tampines |
| Union Security Services Pte. Ltd. | East | Data Centre | SO | SO | Tampines |
| Brink's Singapore Pte Ltd | East | - | SO | SO | Tampines |
| Guthrie FMC Security Pte Ltd | North | Dormitory | SO | SO | Sembawang |
| GATES PCM Integrated Services Pte Ltd | Central | Gov Building | SO | SS | Pioneer |
| Inhouse Employer | Central | Hotel | SO | SO | Tuas Link |
| Prosec Services Pte Ltd | East | Data Centre | SO | SO | Tampines |
| Prosec Services Pte Ltd | East | Data Centre | SO | SO | Tampines |
| Jasa Investigation & Security Services Pte Ltd | East | Condominium | SO | SO | Tampines |
