| SMS Investigation & Security Pte Ltd | Central | - | OM | SSS | Tampines |
| RAS Security Pte Ltd | North | Commercial | OE | SS | Woodlands South |
| Reachfield Security & Safety Management Pte Ltd | Island Wide | - | Security Mgt | Nil | Yishun |
| Shine Security Agency Pte Ltd | Island Wide | - | OE | SS | Farrer Park |
| Dragnet Smartech Security Pte Ltd | Central | School | SSO | SSO | Bukit Batok |
| Star Security Services | Island Wide | - | Security Mgt | SS | - |
| Prosec Services Pte Ltd | East | Retail | SO | SO | Pasir Ris |
| FormTeam Consultancy Pte Ltd | Island Wide | - | OE | SSS | Woodlands |
| SATS Ltd | East | - | OE | CSO | Toa Payoh |
| AETOS Holdings Pte Ltd | West | - | SO | SO | Yishun |
| JEN Singapore Tanglin by Shangri-La | Central | In-House | OM | SSS | Queenstown |
| Securus Pte Ltd | Island Wide | - | OM | CSO | Marsiling |
| Inhouse Employer | East | School | SO | SO | Serangoon |
| Crowne Plaza Changi Airport | East | In-House | OE | CSO | Marsiling |
| Regal Security & Fire Management Services Pte Ltd | West | Industrial / Factory | SO | SO | Choa Chu Kang |
| GoMobile Security Solutions Pte Ltd | Island Wide | - | OM | Nil | Buangkok |
| Excellent Security & Safety Pte Ltd | East | Data Centre | SSO | SSO | - |
| PICO Guards Pte Ltd | South | Commercial | SSS | CSO | Marsiling |
| G4S Secure Solutions (Singapore) Pte Ltd | East | Commercial | SO | SSO | Eunos |
| Total Protection Solutions Pte Ltd | Island Wide | - | OM | SSS | Sengkang |
| Kingston Property Maintenance Services Pte Ltd | Island Wide | - | OE | CSO | Marsiling |
| Reachfield Security & Safety Management Pte Ltd | North | School | SSS | SS | Woodlands |
| Soverus Pte Ltd | Island Wide | - | OE | SSO | Woodlands |
| Security Masters Pte Ltd | North | Commercial | CSO | CSO | Marsiling |
| Prosec Services Pte Ltd | Central | Commercial | SSO | SSO | - |
