| G4S Secure Solutions (Singapore) Pte Ltd | East | Commercial | SSO | SSO | Eunos |
| Orchid Hotel Private Limited | Central | In-House | OM | SSS | Tampines |
| Chang & Chang Security Management Pte. Ltd. | West | Condominium | SO | SO | Choa Chu Kang |
| Ranger Investigation & Security Services Pte Ltd | West | Construction | SO | SO | Bukit Batok |
| Triple ‘S’ Protection Pte Ltd | Island Wide | - | OE | SSS | Yishun |
| A-SAT Pte Ltd | North | Mix-Development | SSO | SO | Clementi |
| FormTeam Consultancy Pte Ltd | Island Wide | - | OE | SSS | Clementi |
| Resorts World Sentosa | South | Commercial | SS | SSS | Woodlands |
| Metropolis Security Systems Pte Ltd | Island Wide | - | OE | SS | Bukit Batok |
| Security & Risk Solutions Pte. Ltd. | Central | - | Office Team | SSS | Tiong Bahru |
| Securus Pte Ltd | Island Wide | - | OM | SSS | Sengkang |
| Certis Group | Central | Commercial | SO | SSO | Choa Chu Kang |
| FormTeam Consultancy Pte Ltd | Island Wide | - | OE | SS | Kaki Bukit |
| Titanium Safety & Security Pte Ltd | Island Wide | - | OE | CSO | Marsiling |
| Crowne Plaza Changi Airport | East | Hotel | SSO | SSO | Tuas Link |
| G4S Secure Solutions (Singapore) Pte Ltd | West | Commercial | SS | SO | Jurong East |
| Premier Security Co-operative Ltd | Island Wide | - | SSO | SO | Woodlands |
| Peregrine Security Pte. Ltd. | Island Wide | - | OE | CSO | Marsiling |
| G4S Secure Solutions (Singapore) Pte Ltd | Central | Retail | SO | SO | - |
| Dragnet Smartech Security Pte Ltd | Central | - | Security Mgt | CSO | Pasir Ris |
| Triple ‘S’ Protection Pte Ltd | North | Depot | SS | SS | Marsiling |
| Reachfield Security & Safety Management Pte Ltd | Island Wide | Commercial | SS | SS | Admiralty |
| Securus Pte Ltd | Island Wide | - | OM | Nil | Dover |
| Crowne Plaza Changi Airport | East | Hotel | Security Mgt | SSO | Hougang |
| Inhouse Employer | Central | School | SO | SSO | Marsiling |
