| Reachfield Security & Safety Management Pte Ltd | East | School | SO | SO | Mountbatten |
| Inhouse Employer | East | School | SO | SSS | MacPherson |
| Reachfield Security & Safety Management Pte Ltd | East | School | SO | SO | Yishun |
| Reachfield Security & Safety Management Pte Ltd | East | School | SO | SO | Yishun |
| Inhouse Employer | East | School | SO | SSS | MacPherson |
| Certis Group | West | School | SSO | SO | Outram Park |
| Reachfield Security & Safety Management Pte Ltd | Central | School | SO | SS | - |
| Inhouse Employer | Central | School | SO | SSO | Bukit Gombak |
| Premier Security Co-operative Ltd | North | School | SSS | SSS | Ang Mo Kio |
| Inhouse Employer | East | School | SO | SSS | MacPherson |
| Certis Group | Central | School | SO | Nil | Jurong East |
| Inhouse Employer | East | School | SO | SO | Pasir Ris |
| 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 |
| 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 |
| Inhouse Employer | East | School | SO | SSO | Woodlands |
| Dragnet Smartech Security Pte Ltd | Central | School | SSO | SSO | Pasir Ris |
| Certis Group | Central | School | SS | SS | Marsiling |
| Inhouse Employer | East | School | SO | SO | Bedok |
| Inhouse Employer | East | School | SO | SO | Bedok |
