| Orchid Hotel Private Limited | Central | In-House | OM | SSS | Punggol |
| Orchid Hotel Private Limited | Central | In-House | OM | CSO | Toa Payoh |
| Trek Investigations & Security Management Services Pte Ltd | Central | - | SO | SSO | Yishun |
| Force-One Security | Central | Industrial / Factory | SO | SO | Bras Basah |
| Peregrine Security Pte. Ltd. | Central | School | SO | SO | Bras Basah |
| Fervour Pte Ltd | Central | Mix-Development | SO | SO | Bras Basah |
| Horus I (Private Limited) | Central | Retail | SO | SO | Bras Basah |
| Orchid Hotel Private Limited | Central | In-House | OM | SSS | Yishun |
| Inhouse Employer | Central | School | SO | SO | Bras Basah |
| Reachfield Security & Safety Management Pte Ltd | Central | School | Security Mgt | SSO | Boon Lay |
| G4S Secure Solutions (Singapore) Pte Ltd | Central | In-House | SSO | SSO | Boon Lay |
| Certis Group | Central | Commercial | SO | SSO | Choa Chu Kang |
| Soverus Pte Ltd | Central | Commercial | SSS | SSS | Jurong East |
| Certis Group | Central | Commercial | SO | SSO | Choa Chu Kang |
| TwinRock Global | Central | - | Security Mgt | SSS | Tiong Bahru |
| Reachfield Security & Safety Management Pte Ltd | Central | School | Security Mgt | SSS | Tiong Bahru |
| Certis Group | Central | Commercial | SO | SSO | Choa Chu Kang |
| Certis Group | Central | Commercial | SO | SSO | Choa Chu Kang |
| Peregrine Security Pte. Ltd. | Central | - | SSO | SS | Geylang Bahru |
| Certis Group | Central | Commercial | SO | SSO | Choa Chu Kang |
| Force-One Security | Central | Commercial | SO | SSO | Choa Chu Kang |
| Certis Group | Central | Commercial | SO | SSO | Choa Chu Kang |
| Inhouse Employer | Central | Healthcare | OE | SSO | Serangoon |
| Force-One Security | Central | Commercial | SO | SO | Yishun |
| Certis Group | Central | Commercial | SO | SSO | Choa Chu Kang |
