| IGC Security Services Pte Ltd | South | Commercial | SS | SS | Marsiling |
| Soverus Pte Ltd | South | Commercial | SS | SS | Marsiling |
| Peregrine Security Pte. Ltd. | South | Office Building | SS | SSS | Ang Mo Kio |
| Soverus Pte Ltd | South | In-House | SS | SS | Jurong East |
| Soverus Pte Ltd | South | In-House | SS | SS | Jurong East |
| G4S Secure Solutions (Singapore) Pte Ltd | South | Commercial | SSO | SSS | Tampines |
| SMS Investigation & Security Pte Ltd | South | Condominium | SS | SS | Marsiling |
| Reachfield Security & Safety Management Pte Ltd | South | - | OE | SSS | Woodlands |
| Reachfield Security & Safety Management Pte Ltd | South | Commercial | CSO | SSS | Woodlands |
| G4S Secure Solutions (Singapore) Pte Ltd | South | - | SO | SO | Bukit Batok |
| Soverus Pte Ltd | South | In-House | SS | SS | Sengkang |
| G4S Secure Solutions (Singapore) Pte Ltd | South | - | SO | SO | Bukit Batok |
| G4S Secure Solutions (Singapore) Pte Ltd | South | - | SO | SO | Bukit Batok |
| Premier Security Co-operative Ltd | South | Commercial | SO | SO | Bukit Batok |
| Soverus Pte Ltd | South | In-House | SSO | SO | Bukit Batok |
| G4S Secure Solutions (Singapore) Pte Ltd | South | - | SO | SO | Bukit Batok |
| Soverus Pte Ltd | South | Commercial | SS | SS | Hougang |
| Certis Group | South | Healthcare | SS | SS | Hougang |
| G4S Secure Solutions (Singapore) Pte Ltd | South | - | SO | SO | Bukit Batok |
| G4S Secure Solutions (Singapore) Pte Ltd | South | Commercial | SSO | SO | Bukit Batok |
| PICO Guards Pte Ltd | South | - | SSS | SS | Ang Mo Kio |
| Certis Group | South | Healthcare | SS | SS | Ang Mo Kio |
| Prosec Services Pte Ltd | South | Commercial | SSS | SSS | Tanjong Pagar |
| Aero Asia Security Systems Pte Ltd | South | Condominium | SO | SO | Redhill |
| Premier Security Co-operative Ltd | South | Commercial | SO | SO | Redhill |
