| Triple ‘S’ Protection Pte Ltd | Island Wide | - | OM | CSO | Tampines |
| AGS Integration Pte. Ltd. | Island Wide | - | OE | CSO | Pasir Ris |
| Trek Investigations & Security Management Services Pte Ltd | Island Wide | - | OE | CSO | Toa Payoh |
| Inhouse Employer | Island Wide | - | OE | SSO | Boon Lay |
| Peregrine Security Pte. Ltd. | Central | - | SSO | SS | Geylang Bahru |
| Certis Group | Island Wide | - | SSO | SSO | Marsiling |
| Fervour Pte Ltd | Island Wide | - | OM | CSO | Tampines |
| Inhouse Employer | West | In-House | OM | CSO | Toa Payoh |
| Acestes Pte Ltd | Island Wide | - | OM | CSO | Punggol |
| AGS Integration Pte. Ltd. | West | In-House | SS | SS | Hougang |
| Royal Security Management Services Pte Ltd | Island Wide | - | OE | SSS | Sengkang |
| Aero Asia Security Systems Pte Ltd | Island Wide | - | OE | Nil | Yishun |
| Pedro Investigations & Security Services Pte. Ltd. | Central | - | SSO | SS | Bukit Panjang |
| Dragnet Smartech Security Pte Ltd | Central | - | Security Mgt | Nil | Tampines |
| AETOS Holdings Pte Ltd | West | Commercial | SSO | SS | Marsiling |
| Security & Risk Solutions Pte. Ltd. | Central | - | Office Team | SSS | Jurong East |
| G4S Secure Solutions (Singapore) Pte Ltd | South | - | SO | SO | - |
| Reachfield Security & Safety Management Pte Ltd | Island Wide | - | Security Mgt | SO | Choa Chu Kang |
| Hotel Grand Central | Central | Hotel | Security Mgt | SO | Tiong Bahru |
| Certis Group | Central | Commercial | SO | SO | Bukit Batok |
| GoMobile Security Solutions Pte Ltd | Island Wide | - | OM | SSS | Tampines |
| Inhouse Employer | Central | Hotel | SO | SSO | Bukit Batok |
| Aspectus Consultancy Pte Ltd | Central | Condominium | SO | SO | Hougang |
| JEN Singapore Tanglin by Shangri-La | Central | In-House | OM | SSS | Jurong East |
| Peregrine Security Pte. Ltd. | Island Wide | - | OE | SO | Woodlands |
