| Orchid Hotel Private Limited | Central | In-House | OM | SS | Sembawang |
| G4S Secure Solutions (Singapore) Pte Ltd | South | Commercial | SSO | SS | Bukit Batok |
| PICO Guards Pte Ltd | Island Wide | - | OM | SSS | Sengkang |
| GoMobile Security Solutions Pte Ltd | Island Wide | - | OM | SSS | Tampines |
| Royal Security Management Services Pte Ltd | Island Wide | - | OE | SSS | Woodlands |
| Premier Security Co-operative Ltd | South | Retail | SSO | SSS | Yishun |
| Force-One Security | North | Data Centre | OE | CSO | Yishun |
| Triple ‘S’ Protection Pte Ltd | Island Wide | - | OM | CSO | Tampines |
| Premier Security Co-operative Ltd | West | Dormitory | SO | SSO | Boon Lay |
| Inhouse Employer | Central | Hotel | SO | SSO | Bukit Batok |
| Royal Security Management Services Pte Ltd | Island Wide | - | OE | SSS | Sengkang |
| Peregrine Security Pte. Ltd. | Island Wide | - | OE | SSS | Clementi |
| Strive Security Pte Ltd | Island Wide | - | OE | SSS | Sengkang |
| AGS Integration Pte. Ltd. | West | In-House | SS | CSO | Bedok |
| JEN Singapore Tanglin by Shangri-La | Central | In-House | OM | SSO | Marsiling |
| PICO Guards Pte Ltd | North | Data Centre | SS | SS | Yishun |
| GoMobile Security Solutions Pte Ltd | West | Condominium | SO | SO | Bukit Gombak |
| Premier Security Co-operative Ltd | Island Wide | - | SSO | SSO | Jurong East |
| Malaysia Dairy Industries Pte Ltd | East | Commercial | OE | SSO | Hougang |
| GATES PCM Integrated Services Pte Ltd | Central | Commercial | SO | SO | Mountbatten |
| Certis Group | Central | Healthcare | SO | SS | Holland Village |
| Total Protection Solutions Pte Ltd | Island Wide | - | OM | SSS | Sengkang |
| Reachfield Security & Safety Management Pte Ltd | Island Wide | - | Security Mgt | SO | Tampines East |
| Kingston Property Maintenance Services Pte Ltd | Island Wide | - | OE | CSO | Marsiling |
| Titanium Safety & Security Pte Ltd | North | In-House | OE | CSO | Pasir Ris |
