| SATS Ltd | Island Wide | - | OM | SS | Pioneer |
| Prosegur Singapore Pte Ltd | Island Wide | - | OE | SS | Sengkang |
| Aero Asia Security Systems Pte Ltd | Island Wide | - | OE | SS | Sengkang |
| Titanium Safety & Security Pte Ltd | Island Wide | - | OE | SS | Sengkang |
| Security & Risk Solutions Pte. Ltd. | Island Wide | - | OE | SS | Sengkang |
| Concorde Security Pte Ltd | Island Wide | - | OE | SS | Sengkang |
| Inhouse Employer | Island Wide | Construction | OM | SO | Sembawang |
| Inhouse Employer | Island Wide | Construction | OM | SO | Sembawang |
| Security & Risk Solutions Pte. Ltd. | Island Wide | - | OE | SS | Kaki Bukit |
| FormTeam Consultancy Pte Ltd | Island Wide | - | OE | SS | Kaki Bukit |
| Singapore Security Force Pte Ltd | Island Wide | - | OE | SS | Kaki Bukit |
| Inhouse Employer | Island Wide | - | OE | SS | Kaki Bukit |
| Star Security Services | Island Wide | - | Security Mgt | SS | Kaki Bukit |
| Inhouse Employer | Island Wide | Construction | OM | SSO | Choa Chu Kang |
| Singapore Security Force Pte Ltd | Island Wide | - | OE | SO | Tuas West Road |
| Inhouse Employer | Island Wide | Construction | OM | SSS | Jurong East |
| Reachfield Security & Safety Management Pte Ltd | Island IWde | - | SS | SS | Buangkok |
| GATES PCM Integrated Services Pte Ltd | Island IWde | - | OE | SS | Buangkok |
| Reachfield Security & Safety Management Pte Ltd | East | School | SO | SO | Pasir Ris |
| Securitas Guarding Services (Singapore) Pte Ltd | East | Data Centre | SO | SO | Hougang |
| Inhouse Employer | East | In-House | SO | SO | Pasir Ris |
| Crowne Plaza Changi Airport | East | Hotel | Security Mgt | SSS | Braddell |
| Danmax Security Management Pte Ltd | East | - | OE | CSO | Bedok |
| Octopus Distribution Networks Pte Ltd | East | In-House | SO | SO | - |
| Union Security Services Pte. Ltd. | East | Data Centre | SS | SSS | Tampines |
