| Overseas (Singapore) Security & Private Investigation Consultants Pte Ltd | Island Wide | - | OE | SSS | Sengkang |
| Inhouse Employer | Island Wide | - | OE | SO | Tiong Bahru |
| PICO Guards Pte Ltd | North | Data Centre | SS | SS | Ang Mo Kio |
| Guthrie FMC Security Pte Ltd | Island Wide | - | OE | SSO | Hougang |
| Total Protection Solutions Pte Ltd | Island Wide | - | OM | CSO | Queenstown |
| TwinRock Global | Central | - | Security Mgt | SSS | Sengkang |
| Inhouse Employer | Central | School | SO | SSS | Marsiling |
| RAS Security Pte Ltd | North | Commercial | SSO | SS | Sembawang |
| G4S Secure Solutions (Singapore) Pte Ltd | West | Industrial / Factory | SO | SO | Boon Lay |
| Reachfield Security & Safety Management Pte Ltd | Island Wide | - | SSS | SSS | Sengkang |
| Oneberry Technologies Pte Ltd | East | School | SSS | CSO | Jurong East |
| Inhouse Employer | Central | Hotel | SO | SO | - |
| SMS Investigation & Security Pte Ltd | North | Condominium | SSO | SS | Woodlands South |
| Securus Pte Ltd | Island Wide | - | OE | SSO | Choa Chu Kang |
| Acestes Pte Ltd | Island Wide | - | OM | SO | Tampines East |
| Grand Copthorne Waterfront Hotel | Central | In-House | Security Mgt | CSO | Toa Payoh |
| Inhouse Employer | Central | Country Club | OM | CSO | Bukit Batok |
| GWC Commercial Pte. Ltd. | Central | Commercial | SO | SSO | - |
| Securus Pte Ltd | Island Wide | - | OE | SSS | Clementi |
| Securus Pte Ltd | Island Wide | - | OM | SO | Bedok |
| Reachfield Security & Safety Management Pte Ltd | North | School | SSS | SSS | Lakeside |
| RAS Security Pte Ltd | North | Commercial | OE | SO | Sengkang |
| Titanium Safety & Security Pte Ltd | North | In-House | SSO | CSO | Bedok |
| Concorde Security Pte Ltd | Central | Commercial | SO | SSO | Pasir Ris |
| Soverus Pte Ltd | Central | Commercial | SSS | SSS | Yishun |
