| Labourtel Management Corporation Pte Ltd | West | Dormitory | SO | SSO | Woodlands |
| GWC Commercial Pte. Ltd. | Central | Commercial | SO | SO | Bukit Batok |
| Inhouse Employer | North | In-House | SO | SO | Bukit Batok |
| Force-One Security | Central | Commercial | SO | SS | Ang Mo Kio |
| A+ Officers Security Pte Ltd | Island Wide | Construction | SO | SS | Ang Mo Kio |
| SATS Ltd | Island Wide | Commercial | SO | SS | Woodlands |
| Dragnet Smartech Security Pte Ltd | Central | Commercial | SO | SSO | Tampines |
| Dragnet Smartech Security Pte Ltd | Central | Commercial | SO | SSO | Tampines |
| SATS Ltd | Island Wide | Commercial | SO | SS | Woodlands |
| Premier Security Co-operative Ltd | West | Dormitory | SO | SO | Bukit Batok |
| Triple ‘S’ Protection Pte Ltd | Island Wide | Commercial | SO | SO | Pioneer |
| Aero Asia Security Systems Pte Ltd | South | Condominium | SO | SO | Redhill |
| Premier Security Co-operative Ltd | South | Commercial | SO | SO | Redhill |
| G4S Secure Solutions (Singapore) Pte Ltd | South | - | SO | SO | Redhill |
| Dragnet Smartech Security Pte Ltd | Island Wide | Commercial | SO | SSO | Tampines |
| Inhouse Employer | North | In-House | SO | SS | Punggol |
| Dragnet Smartech Security Pte Ltd | Central | Commercial | SO | SSO | Tampines |
| Triple ‘S’ Protection Pte Ltd | East | Commercial | SO | SO | Punggol |
| Riverfort Pte Ltd | Central | Hotel | SO | SO | Punggol |
| GATES PCM Integrated Services Pte Ltd | West | School | SO | SO | Punggol |
| Overseas (Singapore) Security & Private Investigation Consultants Pte Ltd | East | Dormitory | SO | SO | Punggol |
| Soverus Pte Ltd | North | School | SO | SO | Punggol |
| Overseas (Singapore) Security & Private Investigation Consultants Pte Ltd | East | Dormitory | SO | SO | Punggol |
| ESA Security Pte Ltd | South | Hotel | SO | SO | Punggol |
| Reachfield Security & Safety Management Pte Ltd | East | School | SO | SO | Punggol |
