| Reachfield Security & Safety Management Pte Ltd | North | Industrial / Factory | SS | SSS | Yishun |
| Force-One Security | North | Data Centre | SS | SSS | Tampines |
| Total Protection Solutions Pte Ltd | Island Wide | - | OM | SSS | Tampines |
| SATS Ltd | Island Wide | - | OM | SSS | Tampines |
| Securus Pte Ltd | Island Wide | - | OM | SSS | Tampines |
| Securus Pte Ltd | Island Wide | - | OE | SSS | Tampines |
| Triple ‘S’ Protection Pte Ltd | Island Wide | - | OM | SSS | Tampines |
| Aspectus Consultancy Pte Ltd | North | Industrial / Factory | SO | SSS | Yishun |
| Reachfield Security & Safety Management Pte Ltd | North | Industrial / Factory | SS | SSS | Yishun |
| Primesafe Security & Investigation Pte Ltd | South | Commercial | SS | SSS | Yishun |
| SMS Investigation & Security Pte Ltd | South | Commercial | SS | SSS | Yishun |
| Reachfield Security & Safety Management Pte Ltd | South | Commercial | SS | SSS | Yishun |
| GATES PCM Integrated Services Pte Ltd | Central | Commercial | SSO | SSS | Yishun |
| PICO Guards Pte Ltd | Central | Commercial | SSS | SSS | Yishun |
| SMS Investigation & Security Pte Ltd | South | Commercial | SS | SSS | Yishun |
| Inhouse Employer | Island Wide | - | OE | SSS | Toa Payoh |
| Crowne Plaza Changi Airport | East | In-House | OE | SSS | Toa Payoh |
| Crowne Plaza Changi Airport | East | In-House | OM | SSS | Toa Payoh |
| Ascentiaa Security Management Pte Ltd | Island Wide | - | SS | SSS | Tampines |
| AGS Integration Pte. Ltd. | West | In-House | SS | SSS | Bukit Batok |
| RAS Security Pte Ltd | North | Commercial | OE | SSS | Bukit Batok |
| RAS Security Pte Ltd | North | Commercial | OE | SSS | Bukit Batok |
| G4S Secure Solutions (Singapore) Pte Ltd | South | Commercial | SSO | SSS | Woodlands |
| G4S Secure Solutions (Singapore) Pte Ltd | East | Commercial | SSO | SSS | Woodlands |
| Inhouse Employer | Island Wide | - | OE | SSS | Toa Payoh |
