| GATES PCM Integrated Services Pte Ltd | Island Wide | - | OE | SSO | Sengkang |
| Union Security Services Pte. Ltd. | East | Data Centre | SS | SSO | Sengkang |
| Ademco Security Pte Ltd | Island Wide | - | SSO | SSO | Toa Payoh |
| Titanium Safety & Security Pte Ltd | North | In-House | SSO | SSO | Toa Payoh |
| Titanium Safety & Security Pte Ltd | North | In-House | SSO | SSO | Toa Payoh |
| Triple ‘S’ Protection Pte Ltd | East | Commercial | SSO | SSO | Bedok |
| G4S Secure Solutions (Singapore) Pte Ltd | East | Commercial | SSO | SSO | Bedok |
| G4S Secure Solutions (Singapore) Pte Ltd | Central | Commercial | SSO | SSO | Tanjong Pagar |
| Prosegur Singapore Pte Ltd | Island Wide | - | OE | SSO | Hougang |
| Inhouse Employer | Central | Country Club | OM | SSO | Hougang |
| IGC Security Services Pte Ltd | Central | Condominium | SSO | SSO | Toa Payoh |
| Titanium Safety & Security Pte Ltd | North | In-House | SSO | SSO | Toa Payoh |
| Premier Security Co-operative Ltd | East | In-House | Office Team | SSO | Simei |
| SMS Security | Central | Industrial / Factory | SO | SSO | Tanjong Pagar |
| G4S Secure Solutions (Singapore) Pte Ltd | North | School | SSO | SSO | Marsiling |
| PICO Guards Pte Ltd | North | Data Centre | SO | SSO | Ang Mo Kio |
| PICO Guards Pte Ltd | North | Data Centre | SSO | SSO | Ang Mo Kio |
| Labourtel Management Corporation Pte Ltd | West | Dormitory | SO | SSO | Woodlands |
| Prosec Services Pte Ltd | East | - | SSO | SSO | Tampines |
| Dragnet Smartech Security Pte Ltd | Central | Commercial | SO | SSO | Tampines |
| Dragnet Smartech Security Pte Ltd | Central | Commercial | SO | SSO | Tampines |
| Acestes Pte Ltd | East | Condominium | SSO | SSO | Sengkang |
| Premier Security Co-operative Ltd | Central | - | SS | SSO | Simei |
| Dragnet Smartech Security Pte Ltd | Island Wide | Commercial | SO | SSO | Tampines |
| Dragnet Smartech Security Pte Ltd | Central | Commercial | SO | SSO | Tampines |
