| SATS Ltd | Island Wide | - | OM | Nil | Tampines |
| Premier Security Co-operative Ltd | Island Wide | - | SSO | Nil | Sengkang |
| Total Protection Solutions Pte Ltd | Island Wide | - | OM | Nil | - |
| FormTeam Consultancy Pte Ltd | Island Wide | - | OE | Nil | Ang Mo Kio |
| Dragnet Smartech Security Pte Ltd | Central | - | Security Mgt | Nil | Tampines |
| SATS Ltd | Island Wide | - | OM | Nil | Tampines |
| Orchid Hotel Private Limited | Central | In-House | OM | Nil | Tampines |
| PICO Guards Pte Ltd | Island Wide | - | OM | Nil | Tampines |
| SATS Ltd | Island Wide | - | OM | Nil | Tampines |
| Total Protection Solutions Pte Ltd | Island Wide | - | OM | Nil | Tampines |
| G4S Secure Solutions (Singapore) Pte Ltd | Central | In-House | SSO | Nil | Admiralty |
| SATS Ltd | Island Wide | - | OM | Nil | Tampines |
| Dragnet Smartech Security Pte Ltd | Central | - | Security Mgt | Nil | Tampines |
| PICO Guards Pte Ltd | Island Wide | - | OM | Nil | Tampines |
| Total Protection Solutions Pte Ltd | Island Wide | - | OM | Nil | Tampines |
| Triple ‘S’ Protection Pte Ltd | Island Wide | - | OM | Nil | Tampines |
| AETOS Holdings Pte Ltd | West | - | SO | Nil | Ubi |
| Dragnet Smartech Security Pte Ltd | Central | - | Security Mgt | Nil | Tampines |
| SATS Ltd | Island Wide | - | OM | Nil | Tampines East |
| Inhouse Employer | West | In-House | OM | Nil | Pioneer |
| Reachfield Security & Safety Management Pte Ltd | West | Industrial / Factory | SS | Nil | Pioneer |
| G4S Secure Solutions (Singapore) Pte Ltd | West | Commercial | SS | Nil | Pioneer |
| AGS Integration Pte. Ltd. | West | In-House | SS | Nil | Pioneer |
| ProtectPlus Pte Ltd | Island Wide | - | OE | Nil | Ang Mo Kio |
| Uniforce Security Services Pte Ltd | Island Wide | - | OE | Nil | Ang Mo Kio |
