| Royal Security Management Services Pte Ltd | Island Wide | - | OE | SSS | Sengkang |
| Acestes Pte Ltd | Island Wide | - | OM | SSS | Sengkang |
| Acestes Pte Ltd | Central | - | Security Mgt | SS | Sengkang |
| Star Security Services | Island Wide | - | Security Mgt | SS | Sengkang |
| Eagle I Security Services Pte Ltd | Island Wide | - | OE | SS | Sengkang |
| Crowne Plaza Changi Airport | East | In-House | OE | SS | Sengkang |
| FormTeam Consultancy Pte Ltd | Island Wide | - | OE | SS | Sengkang |
| Royal Security Management Services Pte Ltd | Island Wide | - | OE | SS | Sengkang |
| Titanium Safety & Security Pte Ltd | Island Wide | - | OE | SS | Sengkang |
| Royal Security Management Services Pte Ltd | Island Wide | - | OE | SSS | Sengkang |
| Shine Security Agency Pte Ltd | Island Wide | - | OE | SSS | Sengkang |
| Strive Security Pte Ltd | Island Wide | - | OE | SSS | Sengkang |
| Ademco Security Pte Ltd | Island Wide | - | OE | SSS | Sengkang |
| Securus Pte Ltd | Island Wide | - | OE | SSS | Sengkang |
| PICO Guards Pte Ltd | Island Wide | - | OE | SSS | Sengkang |
| G4S Secure Solutions (Singapore) Pte Ltd | Island Wide | - | OE | SSS | Sengkang |
| Strive Security Pte Ltd | Island Wide | - | OE | SSS | Sengkang |
| William Secure Solutions Pte Ltd | East | Condominium | SO | SO | Sengkang |
| William Secure Solutions Pte Ltd | East | Condominium | SO | SO | Sengkang |
| Reachfield Security & Safety Management Pte Ltd | East | School | SO | SO | Sengkang |
| RAS Security Pte Ltd | East | Commercial | SO | SO | Sengkang |
| Concorde Security Pte Ltd | East | Commercial | SO | SO | Sengkang |
| Premier Security Co-operative Ltd | East | Commercial | SO | SO | Sengkang |
| Reachfield Security & Safety Management Pte Ltd | Central | Commercial | SO | SO | Sengkang |
| SMS Investigation & Security Pte Ltd | East | Condominium | SO | SO | Sengkang |
