| Soverus Pte Ltd | Central | Commercial | SSO | SS | Buona Vista |
| Soverus Pte Ltd | Island Wide | - | SSS | CSO | Queenstown |
| G4S Secure Solutions (Singapore) Pte Ltd | West | Commercial | SS | SO | Jurong East |
| Securus Pte Ltd | Island Wide | - | OE | CSO | Choa Chu Kang |
| Excellent Security & Safety Pte Ltd | Central | Industrial / Factory | SS | SS | Hougang |
| Inhouse Employer | West | Industrial / Factory | SO | SSS | Woodlands |
| Trek Investigations & Security Management Services Pte Ltd | Island Wide | - | OE | SS | Sengkang |
| Prosegur Singapore Pte Ltd | Island Wide | - | OE | SS | Tampines |
| Security & Risk Solutions Pte. Ltd. | Island Wide | - | OE | SS | Sengkang |
| SEOMEO RELC | Central | In-House | SO | SS | Aljunied |
| Inhouse Employer | East | In-House | SO | SSS | MacPherson |
| William Secure Solutions Pte Ltd | East | Condominium | SO | SO | Simei |
| Reachfield Security & Safety Management Pte Ltd | Island Wide | - | SSS | SSS | Admiralty |
| Union Security Services Pte. Ltd. | North | Commercial | SS | SS | Hougang |
| SATS Ltd | Island Wide | - | OM | SS | Clementi |
| Inhouse Employer | Island Wide | - | OE | SSS | Toa Payoh |
| First Security & Private Investigation (Singapore) Pte Ltd | Central | Hotel | SS | SS | Aljunied |
| SMS Investigation & Security Pte Ltd | Central | Condominium | SSO | SSO | - |
| Reachfield Security & Safety Management Pte Ltd | South | - | OE | SSS | Woodlands |
| GoMobile Security Solutions Pte Ltd | Island Wide | - | OM | SSS | Yishun |
| Orchid Hotel Private Limited | Central | In-House | OM | SSS | Yishun |
| Inhouse Employer | Central | Mix-Development | Security Mgt | SSS | Tampines |
| Peregrine Security Pte. Ltd. | North | Healthcare | SSO | SS | Yishun |
| ProtectPlus Pte Ltd | Island Wide | - | OE | CSO | Marsiling |
| Total Protection Solutions Pte Ltd | Island Wide | - | OM | CSO | Toa Payoh |
