| RAS Security Pte Ltd | North | Commercial | SSO | SS | Choa Chu Kang |
| Certis Group | Island Wide | - | SSO | SS | Choa Chu Kang |
| Certis Group | Central | Healthcare | SO | SS | Holland Village |
| Securus Pte Ltd | Island Wide | - | OE | SS | Punggol |
| Elid Technology International Pte Ltd | East | Condominium | SS | SS | Punggol |
| Global Ritz Protection (Security Services) Pte Ltd | Island Wide | - | OE | SS | Sengkang |
| Uniforce Security Services Pte Ltd | Island Wide | - | OE | SS | Bukit Batok |
| Certis Group | Central | Commercial | SO | SS | Choa Chu Kang |
| AGS Integration Pte. Ltd. | West | In-House | SS | SS | Choa Chu Kang |
| Ascentiaa Security Management Pte Ltd | Island Wide | - | SS | SS | Bukit Batok |
| AGS Integration Pte. Ltd. | Island Wide | - | SS | SS | Bukit Batok |
| Brink's Singapore Pte Ltd | East | - | SO | SS | Bukit Batok |
| Aero Asia Security Systems Pte Ltd | Island Wide | - | OE | SS | Pasir Ris |
| Force-One Security | North | Data Centre | OE | SS | Pasir Ris |
| Metropolis Security Systems Pte Ltd | Island Wide | - | OE | SS | Pasir Ris |
| Force-One Security | North | Data Centre | SS | SS | Pasir Ris |
| Resorts World Sentosa | South | Commercial | SS | SS | Pasir Ris |
| Securus Pte Ltd | Island Wide | - | OE | SS | Pasir Ris |
| JEN Singapore Tanglin by Shangri-La | Central | In-House | OE | SS | Pasir Ris |
| Inhouse Employer | West | In-House | OM | SS | Pasir Ris |
| Crowne Plaza Changi Airport | East | In-House | OM | SS | Pasir Ris |
| Inhouse Employer | Island Wide | - | OE | SS | Sengkang |
| Force-One Security | North | Data Centre | OE | SS | Buangkok |
| Soverus Pte Ltd | Island Wide | - | OE | SS | Pasir Ris |
| Force-One Security | North | Data Centre | SS | SS | Hougang |
