| Triple ‘S’ Protection Pte Ltd | Island Wide | - | OM | SSS | Sengkang |
| Aero Asia Security Systems Pte Ltd | Island Wide | - | OE | SSS | Sengkang |
| Jasa Investigation & Security Services Pte Ltd | Central | Healthcare | SSO | SO | Bukit Batok |
| SATS Ltd | Island Wide | - | OM | SSS | Punggol |
| Global Ritz Protection (Security Services) Pte Ltd | Island Wide | - | OE | SS | - |
| Hilton Garden Inn Singapore Serangoon | Central | In-House | SO | SSO | Woodlands |
| Reachfield Security & Safety Management Pte Ltd | Island Wide | Commercial | OE | CSO | Marsiling |
| Star Security Services | Island Wide | - | Security Mgt | SS | Pioneer |
| Security & Risk Solutions Pte. Ltd. | Central | - | Office Team | SSS | Punggol |
| Prosec Services Pte Ltd | East | Retail | SSO | SSO | Bedok North |
| Securus Pte Ltd | Island Wide | - | OM | SSO | Boon Lay |
| RAS Security Pte Ltd | North | Commercial | OE | CSO | Ang Mo Kio |
| Peregrine Security Pte. Ltd. | Island Wide | - | SS | SS | Marsiling |
| Inhouse Employer | Central | In-House | SO | SO | Bedok |
| Orchid Hotel Private Limited | Central | In-House | OM | SSS | Pioneer |
| Malaysia Dairy Industries Pte Ltd | East | Commercial | OE | SSS | Punggol |
| Regal Security & Fire Management Services Pte Ltd | Central | - | OE | CSO | Marsiling |
| Certis Group | Island Wide | - | SSO | SS | Choa Chu Kang |
| SATS Ltd | Island Wide | - | OM | CSO | Toa Payoh |
| Reachfield Security & Safety Management Pte Ltd | North | Industrial / Factory | SS | SSS | Yishun |
| SEOMEO RELC | Central | In-House | SO | SSO | Khatib |
| Kingston Property Maintenance Services Pte Ltd | Central | Mix-Development | SS | SS | Aljunied |
| Acestes Pte Ltd | Island Wide | - | OM | SO | Tampines East |
| Global Ritz Protection (Security Services) Pte Ltd | Island Wide | - | OE | SS | Bukit Panjang |
| SEOMEO RELC | Central | In-House | SO | SS | Aljunied |
