| Shine Security Agency Pte Ltd | Island Wide | - | OE | SSS | Sengkang |
| Force-One Security | North | Data Centre | OE | SSO | Marsiling |
| PICO Guards Pte Ltd | Island Wide | - | OM | SSS | Tampines |
| Aero Asia Security Systems Pte Ltd | Island Wide | - | OE | Nil | Yishun |
| Premier Security Co-operative Ltd | East | Commercial | SO | SO | Simei |
| SATS Ltd | Island Wide | - | Inves | SSO | Boon Lay |
| Inhouse Employer | Central | School | SO | SSO | Marsiling |
| Royal Security Management Services Pte Ltd | Island Wide | - | OE | SS | Sengkang |
| AETOS Holdings Pte Ltd | Island Wide | Mix-Development | APO | SO | Tampines |
| Global Ritz Protection (Security Services) Pte Ltd | Island Wide | - | OE | SSS | Toa Payoh |
| SATS Ltd | East | - | OE | SSS | Toa Payoh |
| Ranger Investigation & Security Services Pte Ltd | Island Wide | In-House | SS | SS | Woodlands |
| Brink's Singapore Pte Ltd | East | - | SO | SSS | Toa Payoh |
| Metropolis Security Systems Pte Ltd | East | Gov Building | SO | SO | Kaki Bukit |
| Acestes Pte Ltd | Island Wide | - | OM | CSO | Punggol |
| Fervour Pte Ltd | Island Wide | - | OM | CSO | Marsiling |
| Star Security Services | Island Wide | - | Security Mgt | CSO | Bukit Panjang |
| Triple ‘S’ Protection Pte Ltd | Island Wide | - | OM | CSO | Marsiling |
| Fervour Pte Ltd | Island Wide | - | OM | SS | Choa Chu Kang |
| Focus Security Services Pte Ltd | West | Condominium | SS | SO | Bright Hill |
| Legion Protection Pte Ltd | Island Wide | - | OE | SS | Admiralty |
| Elid Technology International Pte Ltd | East | Condominium | SO | SO | Mountbatten |
| Peregrine Security Pte. Ltd. | North | Healthcare | SO | SO | Ang Mo Kio |
| Soverus Pte Ltd | Island Wide | - | SSS | CSO | Pasir Ris |
| G4S Secure Solutions (Singapore) Pte Ltd | East | In-House | SSO | SSO | Bukit Batok |
