| G4S Secure Solutions (Singapore) Pte Ltd | East | Commercial | SSO | SO | Bukit Batok |
| Premier Security Co-operative Ltd | North | Commercial | SSO | SS | Yishun |
| G4S Secure Solutions (Singapore) Pte Ltd | Island Wide | - | OE | SSS | Sengkang |
| G4S Secure Solutions (Singapore) Pte Ltd | South | Commercial | SSO | SSO | Bukit Batok |
| Reachfield Security & Safety Management Pte Ltd | South | Commercial | CSO | SSS | Jurong East |
| Fervour Pte Ltd | West | School | SO | Nil | Woodlands |
| Legion Protection Pte Ltd | Island Wide | - | OE | SS | Woodlands |
| Aedge Services Pte Ltd | Island Wide | - | OM | CSO | Bukit Batok |
| Total Protection Solutions Pte Ltd | Island Wide | - | OM | Nil | - |
| Strive Security Pte Ltd | Island Wide | - | OE | SSS | Yishun |
| Danmax Security Management Pte Ltd | East | - | OE | CSO | Bedok |
| Hotel Grand Central | Central | Hotel | Security Mgt | SO | Woodlands |
| Metropolis Security Systems Pte Ltd | South | Commercial | SSS | SSS | Woodlands |
| G4S Secure Solutions (Singapore) Pte Ltd | Island Wide | - | OE | CSO | Marsiling |
| Securitas Guarding Services (Singapore) Pte Ltd | North | Data Centre | SO | SSO | Tampines |
| SMS Investigation & Security Pte Ltd | Central | - | OM | CSO | Marsiling |
| Elid Technology International Pte Ltd | Central | Hotel | SSO | SSO | Redhill |
| GoMobile Security Solutions Pte Ltd | Island Wide | - | OM | CSO | Toa Payoh |
| Elid Technology International Pte Ltd | East | Condominium | SO | SO | Pasir Ris |
| Orchid Hotel Private Limited | Central | In-House | OM | CSO | Toa Payoh |
| AGS Integration Pte. Ltd. | West | In-House | SS | Nil | Yew Tee |
| GWC Commercial Pte. Ltd. | Central | Commercial | SO | SO | Bedok |
| Eagle I Security Services Pte Ltd | Island Wide | - | OE | SS | Woodlands |
| Inhouse Employer | Central | Mix-Development | Security Mgt | SSS | Tampines West |
| Certis Group | North | - | SO | Nil | Marsiling |
