| Ascentiaa Security Management Pte Ltd | Island Wide | - | SS | SSS | Sengkang |
| Union Security Services Pte. Ltd. | Island Wide | - | OE | SSS | Sengkang |
| Aero Asia Security Systems Pte Ltd | Island Wide | - | OE | SSS | Sengkang |
| Peregrine Security Pte. Ltd. | Island Wide | - | OE | SSS | Sengkang |
| Guthrie FMC Security Pte Ltd | Island Wide | - | OE | SSS | Sengkang |
| Aero Asia Security Systems Pte Ltd | Island Wide | - | OE | SSS | Sengkang |
| JEN Singapore Tanglin by Shangri-La | Central | In-House | OM | SO | Sengkang |
| Malaysia Dairy Industries Pte Ltd | East | Commercial | OE | SSO | Sengkang |
| Star Security Services | Island Wide | - | Security Mgt | SSS | Sengkang |
| Guthrie FMC Security Pte Ltd | Island Wide | - | OE | SSS | Sengkang |
| Royal Security Management Services Pte Ltd | Island Wide | - | OE | SSS | Sengkang |
| Ascentiaa Security Management Pte Ltd | Island Wide | - | SS | SSS | Sengkang |
| Force-One Security | North | Data Centre | OE | SSO | Sengkang |
| Prosegur Singapore Pte Ltd | South | Commercial | SSS | Nil | Sengkang |
| Orchid Hotel Private Limited | Central | In-House | OM | Nil | Sengkang |
| Reachfield Security & Safety Management Pte Ltd | South | Commercial | CSO | Nil | Sengkang |
| Prosegur Singapore Pte Ltd | East | Industrial / Factory | SSO | SO | Sengkang |
| Prosegur Singapore Pte Ltd | South | Commercial | SSS | SO | Sengkang |
| Ascentiaa Security Management Pte Ltd | Island Wide | - | SS | SSS | Sengkang |
| Star Security Services | Island Wide | - | Security Mgt | SSS | Sengkang |
| AGS Integration Pte. Ltd. | Island Wide | - | SS | SSS | Sengkang |
| SATS Ltd | Island Wide | - | Inves | SS | Sengkang |
| Aero Asia Security Systems Pte Ltd | Island Wide | - | OE | SSS | Sengkang |
| Security & Risk Solutions Pte. Ltd. | Island Wide | - | OE | SS | Sengkang |
| Peregrine Security Pte. Ltd. | Central | Commercial | SS | SS | Sengkang |
