| Aero Asia Security Systems Pte Ltd | Island Wide | - | OE | SSS | Woodlands |
| Security & Risk Solutions Pte. Ltd. | Island Wide | - | OE | SSS | Woodlands |
| Global Ritz Protection (Security Services) Pte Ltd | Island Wide | - | OE | SSS | Woodlands |
| Inhouse Employer | Island Wide | Construction | OM | SSS | Woodlands |
| SATS Ltd | Island Wide | - | OM | SSS | Commonwealth |
| Aedge Services Pte Ltd | Island Wide | - | OM | SSS | Commonwealth |
| Inhouse Employer | Island Wide | Construction | OM | SSS | Commonwealth |
| Certis Group | Island Wide | - | SSO | SSO | Choa Chu Kang |
| Securus Pte Ltd | Island Wide | - | OE | CSO | Choa Chu Kang |
| SATS Ltd | Island Wide | - | OM | SS | Toa Payoh |
| Ademco Security Pte Ltd | Island Wide | - | OE | SSS | Bukit Panjang |
| Reachfield Security & Safety Management Pte Ltd | Island Wide | Mix-Development | SSO | SSO | Bedok North |
| Ademco Security Pte Ltd | Island Wide | - | SSO | SSO | Bedok North |
| Legion Protection Pte Ltd | Island Wide | - | OE | SSS | Bukit Panjang |
| Triple ‘S’ Protection Pte Ltd | Island Wide | - | OE | SSS | Bukit Panjang |
| Reachfield Security & Safety Management Pte Ltd | Island Wide | Commercial | OE | CSO | Bedok |
| ProtectPlus Pte Ltd | Island Wide | - | OE | SSS | Clementi |
| Securus Pte Ltd | Island Wide | - | OM | SS | Woodlands |
| SATS Ltd | Island Wide | - | OM | SS | Woodlands |
| Aigle Security Pte Ltd | Island Wide | - | OE | SSS | Bukit Panjang |
| Royal Security Management Services Pte Ltd | Island Wide | - | OE | SS | Bukit Panjang |
| Securus Pte Ltd | Island Wide | Commercial | OE | SS | Admiralty |
| Aigle Security Pte Ltd | Island Wide | - | OE | SS | Admiralty |
| FormTeam Consultancy Pte Ltd | Island Wide | - | OE | SS | Admiralty |
| PICO Guards Pte Ltd | Island Wide | - | OE | SS | - |
