| GATES PCM Integrated Services Pte Ltd | Central | Gov Building | SO | SS | Pioneer |
| Inhouse Employer | Central | Hotel | SO | SO | Tuas Link |
| Prosec Services Pte Ltd | East | Data Centre | SO | SO | Tampines |
| Prosec Services Pte Ltd | East | Data Centre | SO | SO | Tampines |
| Jasa Investigation & Security Services Pte Ltd | East | Condominium | SO | SO | Tampines |
| Eagle I Security Services Pte Ltd | East | Commercial | SO | SO | Tampines |
| TwinRock Global | East | Retail | SO | SO | Tampines |
| Reachfield Security & Safety Management Pte Ltd | Central | School | SO | SSS | Pasir Ris |
| TwinRock Global | East | Retail | SO | SSS | Pasir Ris |
| Kingston Property Maintenance Services Pte Ltd | East | Condominium | SO | SO | Tampines |
| TwinRock Global | East | Retail | SO | SO | Tampines |
| Eagle I Security Services Pte Ltd | East | Commercial | SO | SO | Tampines |
| Prosec Services Pte Ltd | East | Data Centre | SO | SO | Tampines |
| Premier Security Co-operative Ltd | East | Commercial | SO | SO | Tampines |
| Premier Security Co-operative Ltd | East | Commercial | SO | SO | Tampines |
| Union Security Services Pte. Ltd. | East | Condominium | SO | SO | Tampines |
| Focal Investigation & Security Agency Pte Ltd | South | Commercial | SO | SO | Tampines |
| IGC Security Services Pte Ltd | North | Commercial | SO | SO | Punggol |
| IGC Security Services Pte Ltd | South | Industrial / Factory | SO | SO | Punggol |
| Reachfield Security & Safety Management Pte Ltd | East | School | SO | SO | Punggol |
| Bulls-Eye Security Services Pte Ltd | East | Commercial | SO | SO | Punggol |
| Trek Investigations & Security Management Services Pte Ltd | Central | Commercial | SO | SO | Punggol |
| Prosec Services Pte Ltd | East | Retail | SO | SO | Punggol |
| TwinRock Global | Central | - | SO | CSO | Bedok |
| TwinRock Global | Central | - | SO | CSO | Bedok |
