| Inhouse Employer | West | In-House | OM | CSO | Toa Payoh |
| Ascentiaa Security Management Pte Ltd | Island Wide | Condominium | SS | SS | Boon Lay |
| Guthrie FMC Security Pte Ltd | Island Wide | - | OE | CSO | Marsiling |
| Metropolis Security Systems Pte Ltd | West | Industrial / Factory | SO | SO | Choa Chu Kang |
| Fervour Pte Ltd | Island Wide | - | OM | Nil | Bukit Panjang |
| York Hotel (Private) Limited | Central | In-House | SS | SS | HarbourFront |
| Metropolis Security Systems Pte Ltd | Central | Industrial / Factory | SO | SSO | Yishun |
| Titanium Safety & Security Pte Ltd | North | In-House | SSO | SO | Bukit Batok |
| G4S Secure Solutions (Singapore) Pte Ltd | West | School | SO | SO | Tampines West |
| Force-One Security | North | Data Centre | SS | SSS | Redhill |
| PICO Guards Pte Ltd | Island Wide | - | OM | SSS | Lakeside |
| SMS Investigation & Security Pte Ltd | Central | Commercial | SO | SO | Serangoon |
| Sands Global Pte Ltd | East | Dormitory | SO | SS | Punggol |
| Apro Asian Protection Pte Ltd | Island Wide | - | OM | CSO | Marsiling |
| G4S Secure Solutions (Singapore) Pte Ltd | Island Wide | - | OE | SSS | Sengkang |
| RAS Security Pte Ltd | North | Commercial | SSO | SS | Choa Chu Kang |
| GoMobile Security Solutions Pte Ltd | Island Wide | - | OM | CSO | Marsiling |
| Titanium Safety & Security Pte Ltd | Island Wide | - | OE | SSS | Sengkang |
| Peregrine Security Pte. Ltd. | Island Wide | - | OE | SS | Woodlands |
| SMS Investigation & Security Pte Ltd | South | Commercial | SS | SS | Bukit Panjang |
| RAS Security Pte Ltd | North | In-House | Office Team | SS | Punggol |
| TwinRock Global | Central | - | Security Mgt | SS | Toa Payoh |
| Security & Risk Solutions Pte. Ltd. | Central | - | Office Team | SO | Yishun |
| Shangri-La Rasa Sentosa, Singapore | South | Hotel | OE | SSS | Dover |
| Elid Technology International Pte Ltd | East | Condominium | SO | SO | Pasir Ris |
