| Certis Group | Central | Commercial | SO | SS | Choa Chu Kang |
| Certis Group | North | - | SO | Nil | Marsiling |
| Certis Group | Central | Healthcare | SO | SS | Holland Village |
| Certis Group | Central | School | SO | Nil | Jurong East |
| Inhouse Employer | East | In-House | SO | SO | Pasir Ris |
| Reachfield Security & Safety Management Pte Ltd | Central | Gov Building | SO | SO | Pasir Ris |
| Aspectus Consultancy Pte Ltd | North | Industrial / Factory | SO | SSS | Yishun |
| Brink's Singapore Pte Ltd | East | - | SO | SO | Pasir Ris |
| William Secure Solutions Pte Ltd | South | Condominium | SO | SO | Mountbatten |
| Premier Security Co-operative Ltd | South | Commercial | SO | Nil | Bukit Batok |
| Certis Group | Central | Commercial | SO | SS | Choa Chu Kang |
| Inhouse Employer | East | School | SO | SO | Pasir Ris |
| Brink's Singapore Pte Ltd | East | - | SO | SS | Bukit Batok |
| Reachfield Security & Safety Management Pte Ltd | East | School | SO | SO | Yishun |
| Inhouse Employer | Central | School | SO | SSO | Woodlands |
| Apro Asian Protection Pte Ltd | East | School | SO | SO | Punggol |
| Reachfield Security & Safety Management Pte Ltd | East | School | SO | SO | Punggol |
| Certis Group | Island Wide | - | SO | SO | Punggol |
| Reachfield Security & Safety Management Pte Ltd | South | School | SO | SO | Punggol |
| Reachfield Security & Safety Management Pte Ltd | North | School | SO | SO | Punggol |
| Reachfield Security & Safety Management Pte Ltd | East | School | SO | SO | Punggol |
| Reachfield Security & Safety Management Pte Ltd | South | School | SO | SO | Punggol |
| Labourtel Management Corporation Pte Ltd | West | Dormitory | SO | SSO | Woodlands |
| Inhouse Employer | North | In-House | SO | SSO | Woodlands |
| Inhouse Employer | Central | Hotel | SO | SSO | Woodlands |
