| SATS Ltd | Island Wide | - | OM | Nil | Hougang |
| Legion Protection Pte Ltd | Island Wide | - | OE | SS | - |
| York Hotel (Private) Limited | Central | In-House | OM | SS | MacPherson |
| Acestes Pte Ltd | Central | - | Security Mgt | SS | Bukit Batok |
| Star Security Services | Island Wide | - | OE | SS | Woodlands |
| Primesafe Security & Investigation Pte Ltd | Island Wide | - | SS | SS | Bukit Panjang |
| ARSLAN SRS Singapore | South | In-House | RSOC/CAMS Op | SSS | Jurong East |
| Orchid Hotel Private Limited | Central | In-House | OM | SSS | Yishun |
| Inhouse Employer | Central | In-House | SSS | SSS | Yishun |
| SATS Ltd | Island Wide | - | OM | SS | Punggol |
| PICO Guards Pte Ltd | Island Wide | - | OM | Nil | Woodlands |
| G4S Secure Solutions (Singapore) Pte Ltd | Central | In-House | SSO | SSO | Pasir Ris |
| AGS Integration Pte. Ltd. | Island Wide | - | SS | SS | Punggol |
| Aero Asia Security Systems Pte Ltd | Island Wide | - | OE | SS | Sengkang |
| Force-One Security | North | Data Centre | SS | SSS | Sengkang |
| Ademco Security Pte Ltd | West | Industrial / Factory | SSO | SO | Jurong East |
| Inhouse Employer | East | In-House | SO | SO | Pasir Ris |
| Focus Security Services Pte Ltd | Central | Retail | SSO | SSO | Tampines |
| Eagle I Security Services Pte Ltd | East | Commercial | SS | SS | Punggol |
| Reachfield Security & Safety Management Pte Ltd | South | School | SO | SO | Punggol |
| Ranger Investigation & Security Services Pte Ltd | Island Wide | - | SS | CSO | Bukit Panjang |
| Securitas Guarding Services (Singapore) Pte Ltd | East | Data Centre | SO | SO | Hougang |
| Eagle I Security Services Pte Ltd | Island Wide | - | OE | SO | Woodlands |
| Fervour Pte Ltd | Island Wide | - | OM | SS | Woodlands |
| Inhouse Employer | North | Industrial / Factory | SSO | SS | Yishun |
