| Securus Pte Ltd | Island Wide | Commercial | OE | SS | Admiralty |
| G4S Secure Solutions (Singapore) Pte Ltd | Central | In-House | SSO | SS | Sengkang |
| FormTeam Consultancy Pte Ltd | Island Wide | - | OE | SS | Punggol |
| First Security & Private Investigation (Singapore) Pte Ltd | South | Condominium | SS | SSS | Jurong East |
| Union Security Services Pte. Ltd. | East | Data Centre | SO | SO | Woodlands |
| Crowne Plaza Changi Airport | East | In-House | OM | SS | Woodlands |
| Hawkeye Security Solutions Pte Ltd | North | Commercial | SO | SSO | Yishun |
| SATS Ltd | Island Wide | - | Inves | CSO | Marsiling |
| Regal Security & Fire Management Services Pte Ltd | Central | - | OE | CSO | Yishun |
| Malaysia Dairy Industries Pte Ltd | East | Commercial | OE | SSS | Punggol |
| GoMobile Security Solutions Pte Ltd | Island Wide | - | OM | CSO | Marsiling |
| Inhouse Employer | Central | Hotel | OE | SS | Sengkang |
| Eagle I Security Services Pte Ltd | East | - | SO | CSO | Bedok |
| Uniforce Security Services Pte Ltd | Central | Condominium | SS | SS | Marsiling |
| Reachfield Security & Safety Management Pte Ltd | Central | School | SO | SSO | Jurong East |
| ARSLAN SRS Singapore | South | In-House | RSOC/CAMS Op | CSO | Bukit Panjang |
| Inhouse Employer | Central | In-House | SO | SO | Pasir Ris |
| Prospect Protection Pte Ltd | East | Industrial / Factory | SO | SO | Simei |
| Primesafe Security & Investigation Pte Ltd | South | Commercial | SS | SSS | Yishun |
| Titanium Safety & Security Pte Ltd | North | In-House | SSO | CSO | Bedok |
| Soverus Pte Ltd | Island Wide | - | OE | SSS | Toa Payoh |
| Total Protection Solutions Pte Ltd | Island Wide | - | OM | SSS | Tampines |
| Soverus Pte Ltd | South | In-House | SSO | SSO | Bukit Batok |
| SATS Ltd | Island Wide | - | OM | CSO | Queenstown |
| Security Masters Pte Ltd | Island Wide | - | SS | SSS | Woodlands |
