| Certis Group | North | Commercial | SO | SO | - |
| Fervour Pte Ltd | North | Data Centre | SO | SO | - |
| SMS Security | East | Condominium | SO | SO | - |
| Artyzen Singapore | Central | Hotel | SO | SS | Jurong East |
| Security Masters Pte Ltd | Island Wide | - | SS | SS | Sengkang |
| Primesafe Security & Investigation Pte Ltd | South | Commercial | SS | SSS | Geylang Bahru |
| Union Security Services Pte. Ltd. | East | Data Centre | SS | SSS | Tampines |
| Reachfield Security & Safety Management Pte Ltd | Island Wide | - | SS | SS | Marsiling |
| Primesafe Security & Investigation Pte Ltd | Island Wide | Commercial | SS | SS | Lavender |
| Primesafe Security & Investigation Pte Ltd | Island Wide | - | SS | SS | Lavender |
| Reachfield Security & Safety Management Pte Ltd | Island Wide | - | SS | SSS | Ang Mo Kio |
| Ranger Investigation & Security Services Pte Ltd | Island Wide | - | SS | SSS | Tampines West |
| Force-One Security | North | Data Centre | SS | SO | Tampines East |
| G4S Secure Solutions (Singapore) Pte Ltd | West | Industrial / Factory | SS | SO | Tampines East |
| Inhouse Employer | Central | In-House | SS | SS | Admiralty |
| Premier Security Co-operative Ltd | Central | Commercial | SS | SS | Toa Payoh |
| Ademco Security Pte Ltd | East | Industrial / Factory | SS | SS | Tampines |
| Certis Group | South | Healthcare | SS | SO | Bukit Panjang |
| Reachfield Security & Safety Management Pte Ltd | Island Wide | - | SS | SS | Yishun |
| Reachfield Security & Safety Management Pte Ltd | Island Wide | - | SS | SS | Yishun |
| Ademco Security Pte Ltd | East | Industrial / Factory | SS | SS | Tampines |
| Uniforce Security Services Pte Ltd | East | Commercial | SS | SS | Tampines |
| Primesafe Security & Investigation Pte Ltd | Island Wide | - | SS | CSO | Bedok |
| Certis Group | Central | School | SS | SS | Bukit Panjang |
| Ranger Investigation & Security Services Pte Ltd | Island Wide | - | SS | SS | Bukit Panjang |
