| Inhouse Employer | Central | Hotel | SS | SS | Hougang |
| Inhouse Employer | East | Hotel | Security Managment | SSS | Ang Mo Kio |
| Trek Investigations & Security Management Services Pte Ltd | Island Wide | - | OE | CSO | Pasir Ris |
| Elid Technology International Pte Ltd | East | Condominium | SO | SO | Pasir Ris |
| Security & Risk Solutions Pte. Ltd. | Central | - | Office Team | SSS | Jurong East |
| Inhouse Employer | Central | Country Club | OM | CSO | Boon Lay |
| Total Protection Solutions Pte Ltd | Island Wide | - | OM | Nil | Toa Payoh |
| Reachfield Security & Safety Management Pte Ltd | Island Wide | Commercial | OE | SSO | Boon Lay |
| Orchid Hotel Private Limited | Central | In-House | OM | SSS | Redhill |
| Strive Security Pte Ltd | West | Industrial / Factory | SO | SO | Choa Chu Kang |
| Total Protection Solutions Pte Ltd | Island Wide | - | OM | Nil | Telok Blangah |
| Soverus Pte Ltd | Central | Data Centre | SSS | CSO | Clementi |
| Hawkeye Security Solutions Pte Ltd | North | Commercial | SO | SSO | Yishun |
| RAS Security Pte Ltd | North | Commercial | SSO | SO | Bukit Batok |
| AGS Integration Pte. Ltd. | West | In-House | SS | SS | Bukit Batok |
| Securus Pte Ltd | Island Wide | - | OE | SSS | Toa Payoh |
| Triple ‘S’ Protection Pte Ltd | Island Wide | - | OM | CSO | Marsiling |
| Soverus Pte Ltd | Island Wide | - | SSS | CSO | Marsiling |
| SATS Ltd | Island Wide | - | OM | SS | Pioneer |
| SMS Investigation & Security Pte Ltd | Central | - | OM | SS | Choa Chu Kang |
| Certis Group | Central | Commercial | SO | SO | Bukit Batok |
| Dragnet Smartech Security Pte Ltd | Central | Condominium | SS | SS | - |
| JEN Singapore Tanglin by Shangri-La | Central | In-House | OM | SS | - |
| Unique Security Services Pte Ltd | East | Condominium | SO | SO | Simei |
| G4S Secure Solutions (Singapore) Pte Ltd | East | Commercial | SSO | SSO | Simei |
