| Elid Technology International Pte Ltd | East | Condominium | SO | SO | Mountbatten |
| TwinRock Global | East | Condominium | SO | SO | Mountbatten |
| GATES PCM Integrated Services Pte Ltd | Central | Commercial | SO | SO | Mountbatten |
| William Secure Solutions Pte Ltd | South | Condominium | SO | SO | Mountbatten |
| Elid Technology International Pte Ltd | East | Condominium | SO | SO | Mountbatten |
| C&W Services (S) Pte Ltd | Central | Gov Building | SO | SO | Mountbatten |
| Metropolis Security Systems Pte Ltd | Central | Condominium | SO | SO | Mountbatten |
| TwinRock Global | East | Condominium | SO | SO | Mountbatten |
| Elitez Security Pte Ltd | East | Condominium | SO | SO | Mountbatten |
| Certis Group | Island Wide | Commercial | SO | SSO | Pasir Ris |
| Certis Group | Island Wide | Commercial | SO | SSO | Pasir Ris |
| First Security & Private Investigation (Singapore) Pte Ltd | South | Commercial | SO | SO | Punggol |
| Inhouse Employer | East | In-House | SO | SO | Punggol |
| Inhouse Employer | West | Industrial / Factory | SO | SSO | Tuas Link |
| FormTeam Consultancy Pte Ltd | East | Condominium | SO | SSO | Pasir Ris |
| Inhouse Employer | South | In-House | SO | SO | Pasir Panjang |
| Inhouse Employer | South | In-House | SO | SO | Pasir Panjang |
| SMS Investigation & Security Pte Ltd | Central | Condominium | SO | SSO | Woodlands |
| Inhouse Employer | South | In-House | SO | SSO | - |
| Inhouse Employer | North | In-House | SO | SS | Yishun |
| Octopus Distribution Networks Pte Ltd | East | In-House | SO | SSO | - |
| William Secure Solutions Pte Ltd | Central | Condominium | SO | SSO | - |
| William Secure Solutions Pte Ltd | Central | Condominium | SO | SSO | - |
| Elitez Security Pte Ltd | East | Commercial | SO | SSS | MacPherson |
| Riverfort Pte Ltd | Central | Hotel | SO | SSO | Redhill |
