| Crowne Plaza Changi Airport | East | Hotel | SSO | SSO | Simei |
| Crowne Plaza Changi Airport | East | In-House | OE | SSO | Simei |
| William Secure Solutions Pte Ltd | East | Condominium | SO | SSO | Sengkang |
| First Security & Private Investigation (Singapore) Pte Ltd | East | Condominium | SSO | SSO | Sengkang |
| Titanium Safety & Security Pte Ltd | North | Dormitory | SO | SSO | Sengkang |
| Soverus Pte Ltd | Island Wide | - | SSO | SSO | Simei |
| Unique Security Services Pte Ltd | East | Condominium | SSO | SSO | Simei |
| Fervour Pte Ltd | East | School | SSO | SSO | Simei |
| Acestes Pte Ltd | Central | - | Security Mgt | SSO | Punggol |
| Pan Pacific Singapore | South | In-House | Security Mgt | SSO | Simei |
| Metropolis Security Systems Pte Ltd | Central | Industrial / Factory | SO | SSO | Commonwealth |
| Metropolis Security Systems Pte Ltd | Central | Industrial / Factory | SO | SSO | Commonwealth |
| PICO Guards Pte Ltd | Central | School | SO | SSO | Commonwealth |
| PICO Guards Pte Ltd | Central | School | SSO | SSO | Commonwealth |
| G4S Secure Solutions (Singapore) Pte Ltd | South | Commercial | SSO | SSO | Simei |
| Force-One Security | Central | Commercial | SO | SSO | Simei |
| York Hotel (Private) Limited | Central | In-House | OM | SSO | Simei |
| GoMobile Security Solutions Pte Ltd | East | Commercial | SSO | SSO | Simei |
| Regal Security & Fire Management Services Pte Ltd | Central | In-House | SSO | SSO | Simei |
| RAS Security Pte Ltd | North | Commercial | SSO | SSO | Simei |
| Inhouse Employer | North | Commercial | SO | SSO | Boon Lay |
| Securitas Guarding Services (Singapore) Pte Ltd | East | Data Centre | SSO | SSO | Tampines |
| Reachfield Security & Safety Management Pte Ltd | South | - | OE | SSO | Simei |
| AGS Integration Pte. Ltd. | West | In-House | SS | SSO | - |
| Securitas Guarding Services (Singapore) Pte Ltd | West | Commercial | SSO | SSO | - |
