| H World Holdings Singapore Pte. Ltd. | Central | In-House | SO | CSO | Yishun |
| Hawkeye Security Solutions Pte Ltd | North | Commercial | SO | SO | Yishun |
| Hawkeye Security Solutions Pte Ltd | North | Commercial | SO | SSO | Yishun |
| Hawkeye Security Solutions Pte Ltd | North | Commercial | SO | SO | Hougang |
| Hawkeye Security Solutions Pte Ltd | Central | Condominium | SSO | SSO | Bukit Batok |
| Hawkeye Security Solutions Pte Ltd | West | Industrial / Factory | SS | SS | Bukit Panjang |
| Hawkeye Security Solutions Pte Ltd | Central | Hotel | SSO | SSO | Bukit Batok |
| Hawkeye Security Solutions Pte Ltd | West | Industrial / Factory | SS | SS | Woodlands |
| Hillcrest Security & Management Services Pte Ltd | East | Condominium | SO | SO | Jurong East |
| Hilton Garden Inn Singapore Serangoon | Central | In-House | SO | SO | - |
| Hilton Garden Inn Singapore Serangoon | Central | In-House | SO | SO | Woodlands |
| Hilton Garden Inn Singapore Serangoon | Central | In-House | SO | SSO | Woodlands |
| Horus I (Private Limited) | Central | Retail | SO | SO | Tai Seng |
| Horus I (Private Limited) | South | Retail | SO | SSO | Punggol |
| Horus I (Private Limited) | Central | Retail | SO | SO | Bras Basah |
| Horus I (Private Limited) | South | Retail | SO | SO | Pasir Ris |
| Horus I (Private Limited) | South | Retail | SO | SO | Pasir Ris |
| Horus I (Private Limited) | North | Retail | SO | SO | Tampines |
| Horus I (Private Limited) | South | Retail | SO | SS | Holland Village |
| Horus I (Private Limited) | Central | Retail | SO | SSO | Pasir Ris |
| Horus I (Private Limited) | Central | Retail | SO | SO | Tampines |
| Horus-I Pte Ltd | South | Commercial | SO | SS | Bukit Panjang |
| Hotel Grand Central | Central | Hotel | Security Mgt | SS | Sengkang |
| Hotel Grand Central | Central | Hotel | Security Mgt | SO | Woodlands |
| Hotel Grand Central | Central | Hotel | Security Mgt | SS | Farrer Park |
