| G4S Secure Solutions (Singapore) Pte Ltd | East | Commercial | SSO | SSO | Pasir Ris |
| SMS Investigation & Security Pte Ltd | East | Condominium | SSO | SS | Punggol |
| SATS Ltd | Island Wide | - | OM | SSS | Lakeside |
| G4S Secure Solutions (Singapore) Pte Ltd | East | In-House | SSO | SSO | Simei |
| Crowne Plaza Changi Airport | East | Hotel | SO | SO | Tampines |
| Ranger Investigation & Security Services Pte Ltd | South | In-House | SS | SS | MacPherson |
| PICO Guards Pte Ltd | Island Wide | - | OE | SS | - |
| Inhouse Employer | North | In-House | SO | SS | Yishun |
| Union Security Services Pte. Ltd. | North | - | SSO | SS | Bukit Panjang |
| Reachfield Security & Safety Management Pte Ltd | Island Wide | - | SSS | SSS | Sengkang |
| PICO Guards Pte Ltd | North | Industrial / Factory | SS | SS | Woodlands |
| Royal Security Management Services Pte Ltd | Island Wide | - | OE | SS | Bukit Batok |
| Crowne Plaza Changi Airport | East | Hotel | Security Mgt | SS | MacPherson |
| Reachfield Security & Safety Management Pte Ltd | South | School | SO | SO | Yishun |
| SATS Ltd | Island Wide | - | OM | Nil | Pasir Ris |
| Grand Copthorne Waterfront Hotel | Central | In-House | Security Mgt | CSO | Toa Payoh |
| Reachfield Security & Safety Management Pte Ltd | Island Wide | - | Security Mgt | CSO | Hougang |
| Royal Security Management Services Pte Ltd | Island Wide | - | OE | SS | Woodlands |
| Pan Pacific Singapore | South | In-House | Security Mgt | SSO | Hougang |
| FormTeam Consultancy Pte Ltd | Island Wide | - | OE | SS | Sengkang |
| Inhouse Employer | Central | In-House | SS | SS | Choa Chu Kang |
| Securus Pte Ltd | Island Wide | - | OE | SS | Woodlands |
| G4S Secure Solutions (Singapore) Pte Ltd | South | Commercial | SSO | SS | Bukit Panjang |
| Orchid Hotel Private Limited | Central | In-House | OM | SSS | Sengkang |
| Star Security Services | Island Wide | - | Security Mgt | SSS | Jurong East |
