| Premier Security Co-operative Ltd | East | Commercial | SO | SO | Simei |
| G4S Secure Solutions (Singapore) Pte Ltd | East | In-House | SSO | CSO | Bedok |
| Inhouse Employer | North | In-House | SO | SSO | Yishun |
| Triple ‘S’ Protection Pte Ltd | Island Wide | - | OM | CSO | Marsiling |
| AGS Integration Pte. Ltd. | Island Wide | - | OE | SS | Woodlands |
| Soverus Pte Ltd | Island Wide | - | SSS | CSO | Marsiling |
| Ranger Investigation & Security Services Pte Ltd | South | In-House | SS | SS | MacPherson |
| Total Protection Solutions Pte Ltd | Island Wide | - | OM | SS | Bukit Panjang |
| Security & Risk Solutions Pte. Ltd. | Central | - | Office Team | SS | Choa Chu Kang |
| Chang & Chang Security Management Pte. Ltd. | East | Condominium | SS | SS | Tampines |
| G4S Secure Solutions (Singapore) Pte Ltd | Central | Commercial | SSO | SS | Choa Chu Kang |
| Peregrine Security Pte. Ltd. | South | Hotel | SSO | SSO | Bedok North |
| Acestes Pte Ltd | Island Wide | - | OM | SO | Tampines East |
| PICO Guards Pte Ltd | East | Commercial | SO | SO | Hougang |
| Inhouse Employer | East | Country Club | SO | SO | Yishun |
| Inhouse Employer | Central | In-House | SSS | SSS | Choa Chu Kang |
| Mainguard Security Services (S) Pte Ltd | East | Healthcare | SSO | SS | Punggol |
| JEN Singapore Tanglin by Shangri-La | Central | In-House | OM | SS | - |
| PICO Guards Pte Ltd | Island Wide | - | OE | SSS | Sengkang |
| Grand Copthorne Waterfront Hotel | Central | In-House | Security Mgt | SS | Bukit Panjang |
| Security & Risk Solutions Pte. Ltd. | Central | - | Office Team | SSS | Jurong East |
| G4S Secure Solutions (Singapore) Pte Ltd | Island Wide | - | OE | Nil | Boon Lay |
| Sands Global Pte Ltd | East | Dormitory | SO | SS | Punggol |
| Security & Risk Solutions Pte. Ltd. | East | Office Building | SS | SS | Hougang |
| Inhouse Employer | Island Wide | - | OE | SS | Farrer Park |
