| Fervour Pte Ltd | Island Wide | - | OM | SSS | Sengkang |
| Prosegur Singapore Pte Ltd | Central | Retail / Mall | SS | SS | Bishan |
| RAS Security Pte Ltd | East | Commercial | SS | SS | Tampines |
| Chang & Chang Security Management Pte. Ltd. | East | Condominium | SS | SS | Tampines |
| Excellent Security & Safety Pte Ltd | East | Industrial / Factory | SSO | SSO | Bukit Batok |
| G4S Secure Solutions (Singapore) Pte Ltd | South | Commercial | SSO | SO | Bukit Batok |
| Aero Asia Security Systems Pte Ltd | Island Wide | - | OE | SSS | Sengkang |
| Security & Risk Solutions Pte. Ltd. | Central | - | Office Team | SSS | Jurong East |
| Inhouse Employer | Central | Hotel | SS | SSS | Potong Pasir |
| RAS Security Pte Ltd | North | Commercial | SSO | SSO | Commonwealth |
| Ademco Security Pte Ltd | Island Wide | - | OE | SSS | Bedok |
| Ademco Security Pte Ltd | South | Mix-Development | SSO | SSO | Bukit Batok |
| ONE°15 Marina Sentosa Cove, Singapore | South | Country Club | SO | SO | Bedok |
| Total Protection Solutions Pte Ltd | Island Wide | - | OM | SS | Pioneer |
| Triple ‘S’ Protection Pte Ltd | Island Wide | Commercial | SO | SO | Pioneer |
| Ademco Security Pte Ltd | West | Industrial / Factory | SSO | SO | Lakeside |
| Regal Security & Fire Management Services Pte Ltd | Central | - | OE | SSS | Pioneer |
| ESA Security Pte Ltd | South | Hotel | SSO | SSO | - |
| SATS Ltd | Island Wide | - | Inves | SS | Choa Chu Kang |
| Guthrie FMC Security Pte Ltd | Island Wide | - | OE | CSO | Marsiling |
| SATS Ltd | East | - | OE | CSO | Marsiling |
| Inhouse Employer | West | In-House | OM | Nil | Clementi |
| Aero Asia Security Systems Pte Ltd | Island Wide | - | OE | CSO | Toa Payoh |
| Certis Group | Central | School | SS | SS | Bukit Panjang |
| Triple ‘S’ Protection Pte Ltd | Central | Commercial | SSO | SS | Buona Vista |
