| Soverus Pte Ltd | North | School | SO | SO | Ang Mo Kio |
| Oneberry Technologies Pte Ltd | East | School | SSS | SSS | Ang Mo Kio |
| Reachfield Security & Safety Management Pte Ltd | Central | School | SS | SSO | MacPherson |
| Reachfield Security & Safety Management Pte Ltd | North | School | SO | SO | Hougang |
| G4S Secure Solutions (Singapore) Pte Ltd | West | School | SSO | SSO | Bukit Batok |
| Certis Group | Central | School | SSO | SSO | Bukit Batok |
| Certis Group | West | School | SSO | SSO | Bukit Batok |
| Dragnet Smartech Security Pte Ltd | Central | School | SSO | SSO | Bukit Batok |
| Certis Group | Central | School | SSO | SSO | Bukit Batok |
| G4S Secure Solutions (Singapore) Pte Ltd | North | School | SSO | SSO | Bukit Batok |
| Dragnet Smartech Security Pte Ltd | Central | School | SSO | SSO | Bukit Batok |
| Uniforce Security Services Pte Ltd | East | School | SSO | SSO | Bukit Batok |
| G4S Secure Solutions (Singapore) Pte Ltd | North | School | SSO | SSO | Yishun |
| Reachfield Security & Safety Management Pte Ltd | Central | School | Security Mgt | SSO | Admiralty |
| Reachfield Security & Safety Management Pte Ltd | Central | School | Security Mgt | SS | Bukit Panjang |
| Inhouse Employer | West | School | OE | CSO | Bukit Batok |
| Reachfield Security & Safety Management Pte Ltd | Central | School | Security Mgt | SS | Admiralty |
| Reachfield Security & Safety Management Pte Ltd | Central | School | Security Mgt | SS | Farrer Park |
| Inhouse Employer | West | School | OE | SS | Pioneer |
| Reachfield Security & Safety Management Pte Ltd | Central | School | Security Mgt | SS | Bukit Panjang |
| Inhouse Employer | Central | School | SO | SO | Bedok |
| Inhouse Employer | West | School | OE | SSS | Woodlands |
| Inhouse Employer | West | School | OE | SSS | Woodlands |
| Reachfield Security & Safety Management Pte Ltd | Central | School | Security Mgt | SS | Woodlands |
| G4S Secure Solutions (Singapore) Pte Ltd | Central | School | SO | SO | Clementi |
