| Inhouse Employer | East | School | SO | SO | Serangoon |
| Crowne Plaza Changi Airport | East | Hotel | Security Mgt | SS | MacPherson |
| Singapore Security Force Pte Ltd | Island Wide | - | OE | SS | Kaki Bukit |
| Acestes Pte Ltd | Central | - | Security Mgt | CSO | Woodlands |
| Triple ‘S’ Protection Pte Ltd | Island Wide | - | OM | CSO | Choa Chu Kang |
| IGC Security Services Pte Ltd | Central | Condominium | SS | SS | Woodlands |
| ARSLAN SRS Singapore | South | In-House | RSOC/CAMS Op | SSS | Toa Payoh |
| G4S Secure Solutions (Singapore) Pte Ltd | Central | Retail | SO | SO | - |
| Peregrine Security Pte. Ltd. | Island Wide | - | OE | SO | Yishun |
| Reachfield Security & Safety Management Pte Ltd | Island Wide | Commercial | SS | SSO | Admiralty |
| Metropolis Security Systems Pte Ltd | Central | Condominium | SSO | SSO | Tampines |
| GoMobile Security Solutions Pte Ltd | Island Wide | - | OM | SS | Woodlands |
| Sands Global Pte Ltd | Central | Condominium | SS | SO | Bright Hill |
| Total Protection Solutions Pte Ltd | Island Wide | - | OM | SS | Choa Chu Kang |
| Inhouse Employer | East | School | SO | SO | Serangoon |
| SATS Ltd | East | - | OE | CSO | Toa Payoh |
| Regal Security & Fire Management Services Pte Ltd | Central | In-House | SSO | SSO | MacPherson |
| G4S Secure Solutions (Singapore) Pte Ltd | East | School | SO | SO | Lavender |
| Horus I (Private Limited) | Central | Retail | SO | SO | Tampines |
| Reachfield Security & Safety Management Pte Ltd | North | School | SO | SO | Woodlands |
| Inhouse Employer | Island Wide | - | OE | SSS | Woodlands |
| Peregrine Security Pte. Ltd. | Central | - | SSO | SSO | Bukit Batok |
| Brink's Singapore Pte Ltd | East | - | SO | SSO | Bukit Batok |
| Focus Security Services Pte Ltd | West | Condominium | SS | SS | - |
| Security Masters Pte Ltd | North | Commercial | CSO | CSO | Woodlands |
