| PICO Guards Pte Ltd | North | School | SO | SO | Yishun |
| William Secure Solutions Pte Ltd | East | Condominium | SO | SO | Yishun |
| Overseas (Singapore) Security & Private Investigation Consultants Pte Ltd | East | Dormitory | SO | SO | Yishun |
| First Security & Private Investigation (Singapore) Pte Ltd | West | Condominium | SO | SO | Bukit Panjang |
| Elid Technology International Pte Ltd | West | Condominium | SO | SO | Bukit Panjang |
| Inhouse Employer | North | In-House | SO | SSO | Woodlands |
| Overseas (Singapore) Security & Private Investigation Consultants Pte Ltd | East | Dormitory | SO | SSO | Woodlands |
| FormTeam Consultancy Pte Ltd | Central | Condominium | SO | SSO | Woodlands |
| Inhouse Employer | North | In-House | SO | SSO | Woodlands |
| Inhouse Employer | North | In-House | SO | SSO | Woodlands |
| Inhouse Employer | North | In-House | SO | SSO | Woodlands |
| Soverus Pte Ltd | North | School | SO | SO | Serangoon |
| Soverus Pte Ltd | North | School | SO | SO | Serangoon |
| Force-One Security | North | Data Centre | SO | SO | Serangoon |
| Inhouse Employer | East | School | SO | SO | Serangoon |
| Reachfield Security & Safety Management Pte Ltd | East | School | SO | SO | Tampines |
| GoMobile Security Solutions Pte Ltd | West | Condominium | SO | SO | Bukit Panjang |
| PICO Guards Pte Ltd | Central | School | SO | SO | Bukit Panjang |
| Inhouse Employer | North | In-House | SO | SSO | Yishun |
| Trek Investigations & Security Management Services Pte Ltd | Central | Condominium | SO | SO | Bukit Panjang |
| Reachfield Security & Safety Management Pte Ltd | South | School | SO | SO | Aljunied |
| Horus I (Private Limited) | Central | Retail | SO | SO | Tampines |
| Kingston Property Maintenance Services Pte Ltd | West | Condominium | SO | SSS | Clementi |
| TwinRock Global | South | Condominium | SO | SSS | Clementi |
| Brink's Singapore Pte Ltd | East | - | SO | SO | Pasir Ris |
