| Union Security Services Pte. Ltd. | East | Data Centre | SS | SSO | Jurong East |
| G4S Secure Solutions (Singapore) Pte Ltd | West | Commercial | SS | SSO | Jurong East |
| Reachfield Security & Safety Management Pte Ltd | West | Commercial | SS | SSO | Jurong East |
| FormTeam Consultancy Pte Ltd | Island Wide | - | OE | SSO | Jurong East |
| Soverus Pte Ltd | South | In-House | SSO | SSO | Jurong East |
| Dragnet Smartech Security Pte Ltd | East | - | SSO | SSO | Jurong East |
| Titanium Safety & Security Pte Ltd | North | In-House | SSO | SSO | Jurong East |
| G4S Secure Solutions (Singapore) Pte Ltd | South | Commercial | SSO | SSO | Jurong East |
| Premier Security Co-operative Ltd | East | In-House | Office Team | SS | Jurong East |
| RAS Security Pte Ltd | North | In-House | Office Team | SS | Jurong East |
| Inhouse Employer | Central | Hotel | SO | SSO | Jurong East |
| G4S Secure Solutions (Singapore) Pte Ltd | Central | In-House | SSO | SSO | Jurong East |
| E2E Global Services Pte Ltd | East | Commercial | SO | SSO | Jurong East |
| M Social Singapore | Central | Hotel | OE | SSO | Jurong East |
| G4S Secure Solutions (Singapore) Pte Ltd | South | Commercial | SO | SSO | Jurong East |
| Inhouse Employer | Central | Hotel | SO | SSO | Jurong East |
| Dragnet Smartech Security Pte Ltd | East | - | SSO | SSO | Jurong East |
| Inhouse Employer | Central | Hotel | SO | SSO | Jurong East |
| Crowne Plaza Changi Airport | East | Hotel | SSO | SSO | Jurong East |
| G4S Secure Solutions (Singapore) Pte Ltd | East | Commercial | SSO | SSO | Jurong East |
| Crowne Plaza Changi Airport | East | Hotel | SSO | SSO | Jurong East |
| Metropolis Security Systems Pte Ltd | Central | Condominium | SS | SS | Jurong East |
| Security & Risk Solutions Pte. Ltd. | Central | In-House | RSOC/CAMS Op | SS | Jurong East |
| Force-One Security | North | Data Centre | SS | SS | Jurong East |
| Premier Security Co-operative Ltd | Island Wide | - | SS | SS | Jurong East |
