| Certis Group | Central | Industrial / Factory | SSO | SO | Choa Chu Kang |
| Inhouse Employer | Central | Hotel | OE | SO | Choa Chu Kang |
| Pedro Investigations & Security Services Pte. Ltd. | Central | Industrial / Factory | SO | SO | Woodlands |
| Inhouse Employer | Central | Hotel | SO | SO | - |
| Acestes Pte Ltd | Central | - | Security Mgt | SS | Pasir Ris |
| TwinRock Global | Central | - | Security Mgt | SS | Pasir Ris |
| Inhouse Employer | Central | Hotel | SO | SO | - |
| Premier Security Co-operative Ltd | Central | Healthcare | SSS | SS | Woodlands |
| SMS Investigation & Security Pte Ltd | Central | - | OM | Nil | Ang Mo Kio |
| Acestes Pte Ltd | Central | - | Security Mgt | Nil | Ang Mo Kio |
| TwinRock Global | Central | - | Security Mgt | Nil | Ang Mo Kio |
| Premier Security Co-operative Ltd | Central | Healthcare | SSS | SS | Farrer Park |
| William Secure Solutions Pte Ltd | Central | Condominium | SO | SS | Farrer Park |
| William Secure Solutions Pte Ltd | Central | Hotel | SO | SSO | - |
| Soverus Pte Ltd | Central | Data Centre | SSO | SSO | - |
| Orchid Hotel Private Limited | Central | In-House | OM | SSS | Yishun |
| Orchid Hotel Private Limited | Central | In-House | OM | SSS | Yishun |
| PICO Guards Pte Ltd | Central | School | SSO | SO | Boon Lay |
| Triple ‘S’ Protection Pte Ltd | Central | Industrial / Factory | SSO | SO | Boon Lay |
| Orchid Hotel Private Limited | Central | In-House | OM | SSS | Yishun |
| TwinRock Global | Central | - | Security Mgt | SSS | Sengkang |
| Acestes Pte Ltd | Central | - | Security Mgt | CSO | Marsiling |
| TwinRock Global | Central | - | Security Mgt | CSO | Marsiling |
| Inhouse Employer | Central | Mix-Development | Security Mgt | CSO | Marsiling |
| Orchid Hotel Private Limited | Central | In-House | OM | CSO | Marsiling |
