| Reachfield Security & Safety Management Pte Ltd | Island Wide | Mix-Development | SSO | SSO | Bedok North |
| Ademco Security Pte Ltd | Island Wide | - | SSO | SSO | Bedok North |
| SMS Security | East | Mix-Development | SSO | SSO | Potong Pasir |
| Prosegur Singapore Pte Ltd | East | Data Centre | SSO | SSO | Potong Pasir |
| Excellent Security & Safety Pte Ltd | East | Healthcare | SSO | SSO | Pasir Ris |
| G4S Secure Solutions (Singapore) Pte Ltd | East | Commercial | SSO | SSO | Pasir Ris |
| Inhouse Employer | East | In-House | SO | SSO | Pasir Ris |
| Triple ‘S’ Protection Pte Ltd | East | Commercial | SSO | SSO | Pasir Ris |
| Triple ‘S’ Protection Pte Ltd | East | Commercial | SSO | SSO | Pasir Ris |
| Excellent Security & Safety Pte Ltd | East | Data Centre | SSO | SSO | Pasir Ris |
| G4S Secure Solutions (Singapore) Pte Ltd | East | Commercial | SSO | SSO | Pasir Ris |
| Horus I (Private Limited) | South | Retail | SO | SSO | Punggol |
| Securitas Guarding Services (Singapore) Pte Ltd | North | Data Centre | SO | SSO | Tampines |
| Securitas Guarding Services (Singapore) Pte Ltd | East | Data Centre | SO | SSO | Tampines |
| Force-One Security | North | Data Centre | SS | SSO | Tampines |
| Union Security Services Pte Ltd | East | Condominium | SS | SSO | Tampines |
| Inhouse Employer | Central | Healthcare | OE | SSO | Hougang |
| Royal Security Management Services Pte Ltd | North | Industrial / Factory | SO | SSO | Woodlands |
| FormTeam Consultancy Pte Ltd | West | Condominium | SSO | SSO | Woodlands |
| Force-One Security | Central | Commercial | SO | SSO | Woodlands |
| Inhouse Employer | Island Wide | Construction | OM | SSO | Hougang |
| JEN Singapore Tanglin by Shangri-La | Central | In-House | OM | SSO | Hougang |
| Inhouse Employer | Central | Country Club | OM | SSO | Hougang |
| Orchid Hotel Private Limited | Central | In-House | OM | SSO | Hougang |
| York Hotel (Private) Limited | Central | In-House | OM | SSO | Hougang |
