| Soverus Pte Ltd | Island Wide | - | SSO | SSO | Choa Chu Kang |
| Star Security Services | Island Wide | - | Security Mgt | SSO | Hougang |
| Star Security Services | Island Wide | - | Security Mgt | SSO | Hougang |
| SATS Ltd | Island Wide | - | Inves | SO | Hougang |
| Certis Group | Island Wide | - | SSO | SSO | Choa Chu Kang |
| Fervour Pte Ltd | Island Wide | - | OM | CSO | Toa Payoh |
| SATS Ltd | Island Wide | - | OM | CSO | Toa Payoh |
| Triple ‘S’ Protection Pte Ltd | Island Wide | - | OM | CSO | Toa Payoh |
| Acestes Pte Ltd | Island Wide | - | OM | CSO | Toa Payoh |
| Metropolis Security Systems Pte Ltd | Island Wide | - | OE | SS | Bukit Batok |
| Star Security Services | Island Wide | - | Security Mgt | SS | Bukit Batok |
| AETOS Holdings Pte Ltd | Island Wide | Mix-Development | APO | Nil | Admiralty |
| Peregrine Security Pte. Ltd. | Island Wide | - | OE | SSS | Choa Chu Kang |
| Prosegur Singapore Pte Ltd | Island Wide | - | OE | SSS | Punggol |
| Triple ‘S’ Protection Pte Ltd | Island Wide | - | OM | SS | Choa Chu Kang |
| Acestes Pte Ltd | Island Wide | - | OM | SS | Choa Chu Kang |
| GoMobile Security Solutions Pte Ltd | Island Wide | - | OM | SS | Choa Chu Kang |
| Fervour Pte Ltd | Island Wide | - | OM | SS | Choa Chu Kang |
| PICO Guards Pte Ltd | Island Wide | - | OM | SS | Choa Chu Kang |
| Triple ‘S’ Protection Pte Ltd | Island Wide | - | OM | SS | Choa Chu Kang |
| SATS Ltd | Island Wide | - | OM | SS | Choa Chu Kang |
| Total Protection Solutions Pte Ltd | Island Wide | - | OM | SS | Choa Chu Kang |
| Aero Asia Security Systems Pte Ltd | Island Wide | - | OE | SSS | Woodlands |
| Soverus Pte Ltd | Island Wide | - | SSS | SS | Choa Chu Kang |
| Inhouse Employer | Island Wide | Construction | OM | SSO | Hougang |
