| York Hotel (Private) Limited | Central | In-House | OM | SSO | Simei |
| Regal Security & Fire Management Services Pte Ltd | Central | In-House | SSO | SSO | Simei |
| Premier Security Co-operative Ltd | Central | Healthcare | SSS | CSO | Toa Payoh |
| Soverus Pte Ltd | Central | Commercial | SSS | CSO | Clementi |
| SEOMEO RELC | Central | In-House | SO | SS | Aljunied |
| Young Women's Christian Association of Singapore | Central | In-House | SO | SS | Aljunied |
| Orchid Hotel Private Limited | Central | In-House | OM | SS | Kranji |
| Metropolis Security Systems Pte Ltd | Central | Condominium | SS | SS | Khatib |
| Straits Retail Property Management Services Pte. Ltd. | Central | In-House | SO | SO | Pasir Ris |
| SMS Investigation & Security Pte Ltd | Central | - | OM | SS | Yishun |
| York Hotel (Private) Limited | Central | In-House | OM | Nil | Boon Lay |
| Prosec Services Pte Ltd | Central | Commercial | SSO | SSO | - |
| Dragnet Smartech Security Pte Ltd | Central | Commercial | SSO | SSO | - |
| Inhouse Employer | Central | In-House | SSS | CSO | Woodlands |
| Acestes Pte Ltd | Central | - | Security Mgt | SS | Sengkang |
| Inhouse Employer | Central | Hotel | SO | SSS | Marsiling |
| Security Enforcer Pte Ltd | Central | Condominium | SO | SO | Khatib |
| Inhouse Employer | Central | In-House | SO | SO | Punggol |
| Certis Group | Central | Healthcare | SO | SO | Punggol |
| Dragnet Smartech Security Pte Ltd | Central | Commercial | SO | SO | Punggol |
| SMS Investigation & Security Pte Ltd | Central | - | OM | CSO | Tampines |
| Inhouse Employer | Central | In-House | SO | SO | Pasir Ris |
| Inhouse Employer | Central | In-House | SO | SSO | Boon Lay |
| Reachfield Security & Safety Management Pte Ltd | Central | Commercial | SO | SO | Sengkang |
| JEN Singapore Tanglin by Shangri-La | Central | In-House | OM | SS | Kranji |
