| Inhouse Employer | Central | Hotel | SO | SSO | Woodlands |
| PICO Guards Pte Ltd | Island Wide | - | OM | SSS | Tampines |
| Titanium Safety & Security Pte Ltd | Island Wide | - | OE | SS | Sengkang |
| Union Security Services Pte. Ltd. | North | Commercial | SSO | SSO | Yishun |
| SMS Investigation & Security Pte Ltd | Central | - | OM | SSS | Tampines |
| Shangri-La Rasa Sentosa, Singapore | South | Hotel | OE | SSO | Hougang |
| SATS Ltd | Island Wide | - | Inves | Nil | Bukit Batok |
| SMS Security | East | Condominium | SO | SO | - |
| Aedge Services Pte Ltd | Island Wide | - | OM | SS | Choa Chu Kang |
| A-SAT Pte Ltd | South | Mix-Development | SSO | CSO | Bedok |
| Inhouse Employer | West | In-House | OM | Nil | Dover |
| Total Protection Solutions Pte Ltd | Island Wide | - | OM | SS | Pioneer |
| AETOS Holdings Pte Ltd | West | - | SO | SO | Sengkang |
| Certis Group | Central | Commercial | SO | SSO | Choa Chu Kang |
| Securus Pte Ltd | Island Wide | - | OE | SS | Woodlands |
| Dragnet Smartech Security Pte Ltd | East | - | SSO | CSO | Bedok |
| Inhouse Employer | West | In-House | SO | SSO | Bukit Gombak |
| Grand Copthorne Waterfront Hotel | Central | In-House | Security Mgt | SSS | Tampines |
| AETOS Holdings Pte Ltd | West | Commercial | SSO | SS | Marsiling |
| Fervour Pte Ltd | Island Wide | - | OM | SS | Bukit Panjang |
| G4S Secure Solutions (Singapore) Pte Ltd | East | In-House | SSO | CSO | Bedok |
| First Security & Private Investigation (Singapore) Pte Ltd | East | Condominium | SS | SS | Punggol |
| Reachfield Security & Safety Management Pte Ltd | Central | Mix-Development | SO | SSO | Bukit Batok |
| Inhouse Employer | North | Commercial | SO | SSO | Choa Chu Kang |
| Force-One Security | Central | Commercial | SO | SO | Yishun |
