| GATES PCM Integrated Services Pte Ltd | Central | Gov Building | SO | SS | Pioneer |
| G4S Secure Solutions (Singapore) Pte Ltd | Central | School | SO | SO | Bras Basah |
| Inhouse Employer | Central | Hotel | SO | SO | Bras Basah |
| Regal Security & Fire Management Services Pte Ltd | Central | In-House | SSO | SS | Bedok Reservoir |
| Orchid Hotel Private Limited | Central | In-House | OM | SSS | Yishun |
| Orchid Hotel Private Limited | Central | In-House | OM | CSO | Toa Payoh |
| PICO Guards Pte Ltd | Central | Commercial | SSS | CSO | Toa Payoh |
| Certis Group | Central | Commercial | SO | SS | Bukit Batok |
| Acestes Pte Ltd | Central | - | Security Mgt | SS | Bukit Batok |
| Soverus Pte Ltd | Central | Data Centre | SSS | CSO | Toa Payoh |
| PICO Guards Pte Ltd | Central | School | SSO | SSO | Commonwealth |
| TwinRock Global | Central | - | Security Mgt | SS | Choa Chu Kang |
| Inhouse Employer | Central | Healthcare | OE | SSO | Hougang |
| SMS Investigation & Security Pte Ltd | Central | Commercial | SO | SO | Serangoon |
| G4S Secure Solutions (Singapore) Pte Ltd | Central | In-House | SSO | SS | Bukit Batok |
| Inhouse Employer | Central | In-House | SSS | CSO | Ang Mo Kio |
| York Hotel (Private) Limited | Central | In-House | OM | SSS | Bedok |
| SMS Investigation & Security Pte Ltd | Central | - | OM | SSS | Bedok |
| Acestes Pte Ltd | Central | - | Security Mgt | SSS | Bedok |
| Pedro Investigations & Security Services Pte. Ltd. | Central | - | SSO | SS | Bukit Batok |
| JEN Singapore Tanglin by Shangri-La | Central | In-House | OE | SS | Bukit Batok |
| Certis Group | Central | Commercial | SO | SS | Bukit Batok |
| Prosec Services Pte Ltd | Central | Data Centre | SO | SO | Pasir Ris |
| M Social Singapore | Central | Hotel | OE | SS | Bukit Batok |
| Inhouse Employer | Central | Mix-Development | OE | SS | Bukit Batok |
