| G4S Secure Solutions (Singapore) Pte Ltd | Island Wide | - | OE | SSS | Sengkang |
| Inhouse Employer | Central | Hotel | SSO | SS | Simei |
| York Hotel (Private) Limited | Central | In-House | OM | SO | Serangoon |
| Royal Security Management Services Pte Ltd | Island Wide | - | OE | SSS | Sengkang |
| SATS Ltd | Island Wide | - | Inves | SS | Clementi |
| Ranger Investigation & Security Services Pte Ltd | West | Construction | SO | SSS | Bukit Batok |
| Force-One Security | North | Data Centre | OE | SO | Tampines |
| Prospect Protection Pte Ltd | East | Industrial / Factory | SO | SO | Simei |
| AGS Integration Pte. Ltd. | West | In-House | SS | SS | Pasir Ris |
| G4S Secure Solutions (Singapore) Pte Ltd | West | Construction | SO | SO | - |
| Chang & Chang Security Management Pte. Ltd. | East | Condominium | SS | SS | Tampines |
| Royal Security Management Services Pte Ltd | Island Wide | - | OE | SSO | Simei |
| Bulls-Eye Security Services Pte Ltd | Island Wide | - | SSO | SSO | Woodlands |
| Crowne Plaza Changi Airport | East | In-House | OM | SSS | Tampines |
| SATS Ltd | Island Wide | - | OM | CSO | Toa Payoh |
| Inhouse Employer | West | School | OE | SSO | Marsiling |
| Inhouse Employer | West | In-House | OM | SO | Hougang |
| Reachfield Security & Safety Management Pte Ltd | Island Wide | - | SS | SS | Yishun |
| Titanium Safety & Security Pte Ltd | North | In-House | SSO | CSO | Bedok |
| PICO Guards Pte Ltd | North | Data Centre | SS | SS | Marsiling |
| Metropolis Security Systems Pte Ltd | Island Wide | - | OE | SSO | Boon Lay |
| G4S Secure Solutions (Singapore) Pte Ltd | South | School | SO | SO | Clementi |
| Securus Pte Ltd | Island Wide | - | OE | SSS | Sengkang |
| AGS Integration Pte. Ltd. | West | In-House | SS | SSS | Lakeside |
| Triple ‘S’ Protection Pte Ltd | Island Wide | - | OM | SSS | Tampines |
