| FormTeam Consultancy Pte Ltd | Island Wide | - | OE | SS | Admiralty |
| GATES PCM Integrated Services Pte Ltd | East | Commercial | SO | CSO | Bedok |
| Shine Security Agency Pte Ltd | Island Wide | - | OE | SSS | Bukit Batok |
| Security & Risk Solutions Pte. Ltd. | Central | Commercial | SO | SO | Potong Pasir |
| Regal Security & Fire Management Services Pte Ltd | West | Dormitory | SO | SO | Bras Basah |
| Peregrine Security Pte. Ltd. | Island Wide | - | OE | SS | Clementi |
| GATES PCM Integrated Services Pte Ltd | Central | Gov Building | SO | SS | Pioneer |
| SATS Ltd | Island Wide | - | OM | SO | Sengkang |
| GoMobile Security Solutions Pte Ltd | Island Wide | - | OM | SSS | Toa Payoh |
| Reachfield Security & Safety Management Pte Ltd | Central | Commercial | SS | SS | Bukit Panjang |
| SATS Ltd | Island Wide | - | OM | CSO | Choa Chu Kang |
| SMS Investigation & Security Pte Ltd | South | Commercial | SS | SSS | Yishun |
| Hawkeye Security Solutions Pte Ltd | Central | Condominium | SSO | SSO | Bukit Batok |
| AGS Integration Pte. Ltd. | West | In-House | SS | SSO | - |
| Star Security Services | Island Wide | - | Security Mgt | SSS | Tiong Bahru |
| G4S Secure Solutions (Singapore) Pte Ltd | Central | Commercial | SSO | SSO | Tanjong Pagar |
| G4S Secure Solutions (Singapore) Pte Ltd | East | Commercial | SSO | SSO | Woodlands |
| Inhouse Employer | North | In-House | SO | Nil | Marsiling |
| Reachfield Security & Safety Management Pte Ltd | Central | Commercial | SO | SO | Punggol |
| Fervour Pte Ltd | Island Wide | - | OM | CSO | Tampines |
| G4S Secure Solutions (Singapore) Pte Ltd | Island Wide | - | OE | SSS | Sengkang |
| Triple ‘S’ Protection Pte Ltd | Island Wide | - | OE | SSS | Toa Payoh |
| Certis Group | Central | Commercial | SO | CSO | Bedok |
| Regal Security & Fire Management Services Pte Ltd | Central | - | OE | CSO | Marsiling |
| Crowne Plaza Changi Airport | East | Hotel | SO | SS | Pasir Ris |
