| SATS Ltd | Island Wide | - | Inves | Nil | Bukit Batok |
| Premier Security Co-operative Ltd | East | Commercial | SO | Nil | Simei |
| PICO Guards Pte Ltd | Island Wide | - | OM | Nil | Pasir Ris |
| Soverus Pte Ltd | Island Wide | - | SSS | Nil | Pasir Ris |
| SATS Ltd | Island Wide | - | OM | Nil | Pasir Ris |
| Total Protection Solutions Pte Ltd | Island Wide | - | OM | Nil | Pasir Ris |
| G4S Secure Solutions (Singapore) Pte Ltd | Island Wide | - | OE | Nil | Boon Lay |
| Pan Pacific Singapore | South | In-House | Security Mgt | Nil | Yishun |
| PICO Guards Pte Ltd | Island Wide | - | OM | Nil | Woodlands |
| Total Protection Solutions Pte Ltd | Island Wide | - | OM | Nil | Toa Payoh |
| Securus Pte Ltd | Island Wide | - | OM | Nil | Toa Payoh |
| SATS Ltd | Island Wide | - | OM | Nil | Toa Payoh |
| GoMobile Security Solutions Pte Ltd | Island Wide | - | OM | Nil | Lakeside |
| Prosegur Singapore Pte Ltd | East | Commercial | SSO | Nil | Pasir Ris |
| Certis Group | Island Wide | - | SO | Nil | Braddell |
| Certis Group | Island Wide | Commercial | SO | Nil | Braddell |
| Certis Group | North | - | SO | Nil | Marsiling |
| Inhouse Employer | North | In-House | SO | Nil | Marsiling |
| SATS Ltd | Island Wide | - | OM | Nil | Serangoon |
| SATS Ltd | Island Wide | - | OM | Nil | Bukit Batok |
| PICO Guards Pte Ltd | Island Wide | - | OM | Nil | Bukit Batok |
| Total Protection Solutions Pte Ltd | Island Wide | - | OM | Nil | Bukit Batok |
| SATS Ltd | Island Wide | - | Inves | Nil | Yishun |
| Star Security Services | Island Wide | - | Security Mgt | Nil | Yishun |
| GoMobile Security Solutions Pte Ltd | Island Wide | - | OM | Nil | Yishun |
