| Aedge Services Pte Ltd | Island Wide | - | OM | CSO | Yishun |
| Total Protection Solutions Pte Ltd | Island Wide | - | OM | SSS | Yishun |
| Securus Pte Ltd | Island Wide | Commercial | OE | SS | Admiralty |
| Inhouse Employer | East | In-House | SO | SO | - |
| G4S Secure Solutions (Singapore) Pte Ltd | South | Commercial | SSO | SSO | Pasir Ris |
| Eagle I Security Services Pte Ltd | Island Wide | - | OE | SSS | Toa Payoh |
| SATS Ltd | East | - | OE | CSO | Toa Payoh |
| SMS Investigation & Security Pte Ltd | Central | Condominium | SSO | SS | Pioneer |
| Inhouse Employer | West | Industrial / Factory | SO | SSS | Yishun |
| Inhouse Employer | South | In-House | SO | SO | Pasir Ris |
| Union Security Services Pte. Ltd. | East | Data Centre | SO | SO | Bras Basah |
| Fervour Pte Ltd | Island Wide | - | OM | SSS | Sengkang |
| Inhouse Employer | East | In-House | SO | SO | Bedok |
| Hotel Grand Central | Central | Hotel | Security Mgt | SS | Farrer Park |
| PICO Guards Pte Ltd | South | - | SSS | SSS | Bukit Batok |
| York Hotel (Private) Limited | Central | In-House | SS | SS | Sengkang |
| Eagle I Security Services Pte Ltd | Island Wide | - | OE | SSS | Tampines |
| Reachfield Security & Safety Management Pte Ltd | Island Wide | - | Security Mgt | CSO | Hougang |
| Securus Pte Ltd | Island Wide | - | OM | SS | Bukit Panjang |
| Securus Pte Ltd | Island Wide | - | OE | SSS | Sengkang |
| AGS Integration Pte. Ltd. | Island Wide | - | SS | SSO | Simei |
| Overseas (Singapore) Security & Private Investigation Consultants Pte Ltd | Island Wide | - | OE | SO | Woodlands |
| Reachfield Security & Safety Management Pte Ltd | East | School | SO | SO | Punggol |
| Aero Asia Security Systems Pte Ltd | Island Wide | - | OE | CSO | Sengkang |
| Inhouse Employer | East | School | SO | SSO | Punggol |
