| Soverus Pte Ltd | Island Wide | - | OE | SO | Hougang |
| Crowne Plaza Changi Airport | East | In-House | OE | SO | Hougang |
| Royal Security Management Services Pte Ltd | Island Wide | - | OE | CSO | Boon Lay |
| Triple ‘S’ Protection Pte Ltd | Island Wide | - | OE | CSO | Boon Lay |
| Triple ‘S’ Protection Pte Ltd | Island Wide | - | OE | SSS | Sengkang |
| Peregrine Security Pte. Ltd. | Island Wide | - | OE | SSS | Sengkang |
| Royal Security Management Services Pte Ltd | Island Wide | - | OE | SSS | Sengkang |
| Shine Security Agency Pte Ltd | Island Wide | - | OE | CSO | Woodlands |
| RAS Security Pte Ltd | North | Commercial | OE | CSO | Woodlands |
| Inhouse Employer | South | In-House | OE | CSO | Woodlands |
| Royal Security Management Services Pte Ltd | Island Wide | - | OE | SSS | Sengkang |
| Securus Pte Ltd | Island Wide | - | OE | SSS | Sengkang |
| Trek Investigations & Security Management Services 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 |
| AGS Integration Pte. Ltd. | Island Wide | - | OE | SSS | Sengkang |
| Titanium Safety & Security Pte Ltd | Island Wide | - | OE | Nil | Ang Mo Kio |
| Royal Security Management Services Pte Ltd | Island Wide | - | OE | SSS | Sengkang |
| Securus Pte Ltd | Island Wide | - | OE | SS | Ang Mo Kio |
| Reachfield Security & Safety Management Pte Ltd | South | - | OE | SSO | Simei |
| Malaysia Dairy Industries Pte Ltd | East | Commercial | OE | SS | Ang Mo Kio |
| Royal Security Management Services Pte Ltd | Island Wide | - | OE | Nil | Commonwealth |
| Triple ‘S’ Protection Pte Ltd | Island Wide | - | OE | Nil | Commonwealth |
| Titanium Safety & Security Pte Ltd | North | In-House | OE | SSO | Sembawang |
| Uniforce Security Services Pte Ltd | Island Wide | - | OE | SSO | Sembawang |
