| Apro Asian Protection Pte Ltd | Island Wide | - | OM | SS | Tampines |
| Uniforce Security Services Pte Ltd | Central | - | SSO | SS | Bukit Panjang |
| Soverus Pte Ltd | Island Wide | - | SSS | SS | Bukit Panjang |
| Inhouse Employer | Central | In-House | SSS | SS | Bukit Panjang |
| ProtectPlus Pte Ltd | Island Wide | - | OE | SS | Bukit Panjang |
| Securus Pte Ltd | East | Condominium | SS | SS | Aljunied |
| Mainguard Security Services Singapore Pte Ltd | Central | Gov Building | SS | SS | Aljunied |
| G4S Secure Solutions (Singapore) Pte Ltd | South | Commercial | SSO | SS | Bukit Panjang |
| G4S Secure Solutions (Singapore) Pte Ltd | South | Commercial | SSO | SS | Bukit Panjang |
| Inhouse Employer | Central | Country Club | OM | SS | Pioneer |
| Young Women's Christian Association of Singapore | Central | In-House | SO | SS | Aljunied |
| Aedge Services Pte Ltd | Island Wide | - | OM | SS | Pioneer |
| Union Security Services Pte Ltd | North | Healthcare | SO | SS | Woodlands South |
| RAS Security Pte Ltd | North | In-House | Office Team | SS | Punggol |
| Union Security Services Pte Ltd | North | Healthcare | SO | SS | Woodlands South |
| Certis Group | Island Wide | - | SSO | SS | Admiralty |
| Aigle Security Pte Ltd | Island Wide | - | OE | SS | Admiralty |
| Eagle I Security Services Pte Ltd | Island Wide | - | OE | SS | Admiralty |
| FormTeam Consultancy Pte Ltd | Island Wide | - | OE | SS | Admiralty |
| Titanium Safety & Security Pte Ltd | North | In-House | OE | SS | Admiralty |
| Securus Pte Ltd | Island Wide | Commercial | OE | SS | Admiralty |
| Danmax Security Management Pte Ltd | East | - | OE | SS | Admiralty |
| Global Ritz Protection (Security Services) Pte Ltd | Island Wide | - | OE | SS | Admiralty |
| Royal Security Management Services Pte Ltd | Island Wide | - | OE | SS | Marsiling |
| Legion Protection Pte Ltd | Island Wide | - | OE | SS | Marsiling |
