| Soverus Pte Ltd | South | Commercial | SS | SS | Hougang |
| Certis Group | South | Healthcare | SS | SS | Hougang |
| Inhouse Employer | Central | Mix-Development | Security Mgt | SS | Hougang |
| Securus Pte Ltd | Island Wide | - | OM | SS | Hougang |
| Orchid Hotel Private Limited | Central | In-House | OM | SS | Hougang |
| Fervour Pte Ltd | Island Wide | - | OM | SS | Hougang |
| SMS Investigation & Security Pte Ltd | Central | - | OM | SS | Hougang |
| York Hotel (Private) Limited | Central | In-House | OM | SS | Hougang |
| SATS Ltd | East | - | OE | SS | Hougang |
| TwinRock Global | Central | - | OE | SS | Hougang |
| York Hotel (Private) Limited | Central | In-House | OM | SS | Hougang |
| ProtectPlus Pte Ltd | Island Wide | - | OE | SS | Ang Mo Kio |
| Reachfield Security & Safety Management Pte Ltd | Island Wide | - | SSS | SS | Ang Mo Kio |
| Metropolis Security Systems Pte Ltd | Island Wide | - | OE | SS | Ang Mo Kio |
| Royal Security Management Services Pte Ltd | Island Wide | - | OE | SS | Ang Mo Kio |
| FormTeam Consultancy Pte Ltd | Island Wide | - | OE | SS | Ang Mo Kio |
| Force-One Security | Central | Commercial | SO | SS | Ang Mo Kio |
| William Secure Solutions Pte Ltd | Central | Condominium | SS | SS | Ang Mo Kio |
| A+ Officers Security Pte Ltd | Island Wide | Construction | SO | SS | Ang Mo Kio |
| York Hotel (Private) Limited | Central | In-House | OM | SS | Ang Mo Kio |
| PICO Guards Pte Ltd | South | - | SSS | SS | Ang Mo Kio |
| Reachfield Security & Safety Management Pte Ltd | North | School | SSS | SS | Ang Mo Kio |
| Certis Group | South | Healthcare | SS | SS | Ang Mo Kio |
| SMS Investigation & Security Pte Ltd | Central | Condominium | SS | SS | Ang Mo Kio |
| DP Quest Investigation Consultancy Pte Ltd | West | Condominium | SSO | SS | Boon Lay |
