| PICO Guards Pte Ltd | Island Wide | - | OE | SSS | Choa Chu Kang |
| Orchid Hotel Private Limited | Central | In-House | OM | SSS | Jurong East |
| SATS Ltd | East | - | OE | SSS | Sengkang |
| Royal Security Management Services Pte Ltd | Island Wide | - | OE | SSS | Sengkang |
| Strive Security Pte Ltd | Island Wide | - | OE | SSS | Sengkang |
| TwinRock Global | Central | - | Security Mgt | SSS | Sengkang |
| Ascentiaa Security Management Pte Ltd | Island Wide | - | SS | SSS | Sengkang |
| Peregrine Security Pte. Ltd. | Central | Commercial | SS | SSS | Woodlands |
| Metropolis Security Systems Pte Ltd | Island Wide | - | OE | SSS | Jurong East |
| Uniforce Security Services Pte Ltd | Island Wide | - | OE | SSS | Jurong East |
| Securus Pte Ltd | Island Wide | - | OE | SSS | Toa Payoh |
| Force-One Security | North | Data Centre | OE | SSS | Toa Payoh |
| Metropolis Security Systems Pte Ltd | Island Wide | - | OE | SSS | Toa Payoh |
| Global Ritz Protection (Security Services) Pte Ltd | Island Wide | - | OE | SSS | Toa Payoh |
| Shine Security Agency Pte Ltd | Island Wide | - | OE | SSS | Toa Payoh |
| RAS Security Pte Ltd | North | Commercial | OE | SSS | Toa Payoh |
| Inhouse Employer | Island Wide | - | OE | SSS | Toa Payoh |
| Titanium Safety & Security Pte Ltd | Island Wide | - | OE | SSS | Toa Payoh |
| Eagle I Security Services Pte Ltd | Island Wide | - | OE | SSS | Toa Payoh |
| Peregrine Security Pte. Ltd. | Island Wide | - | OE | SSS | Toa Payoh |
| Soverus Pte Ltd | Island Wide | - | OE | SSS | Toa Payoh |
| Overseas (Singapore) Security & Private Investigation Consultants Pte Ltd | Island Wide | - | OE | SSS | Toa Payoh |
| Titanium Safety & Security Pte Ltd | North | In-House | OE | SSS | Toa Payoh |
| Peregrine Security Pte. Ltd. | Island Wide | - | OE | SSS | Toa Payoh |
| SATS Ltd | East | - | OE | SSS | Toa Payoh |
