| Force-One Security | North | Data Centre | OE | SSO | Marsiling |
| Excellent Security & Safety Pte Ltd | North | Data Centre | SO | SS | Buangkok |
| Securitas Guarding Services (Singapore) Pte Ltd | East | Data Centre | SS | SS | MacPherson |
| Securitas Guarding Services (Singapore) Pte Ltd | East | Data Centre | SS | CSO | Yishun |
| Union Security Services Pte. Ltd. | East | Data Centre | SO | SO | Tampines East |
| Union Security Services Pte. Ltd. | East | Data Centre | SO | SO | Tampines East |
| Fervour Pte Ltd | Central | Data Centre | SO | SO | Hougang |
| Union Security Services Pte. Ltd. | East | Data Centre | SS | SO | Woodlands |
| Union Security Services Pte. Ltd. | East | Data Centre | SS | SS | Woodlands |
| Force-One Security | North | Data Centre | SS | SSS | Ang Mo Kio |
| Union Security Services Pte. Ltd. | East | Data Centre | SS | SS | Yishun |
| Excellent Security & Safety Pte Ltd | East | Data Centre | SSO | SSO | Bukit Batok |
| Union Security Services Pte. Ltd. | East | Data Centre | SS | SS | Yishun |
| Union Security Services Pte. Ltd. | East | Data Centre | SS | SS | Bukit Panjang |
| Union Security Services Pte. Ltd. | East | Data Centre | SS | SS | Simei |
| Union Security Services Pte. Ltd. | East | Data Centre | SS | SSS | Tampines West |
| Union Security Services Pte. Ltd. | East | Data Centre | SS | SSS | Telok Blangah |
| Prosec Services Pte Ltd | East | Data Centre | SSO | SSO | Bedok North |
| Union Security Services Pte. Ltd. | East | Data Centre | SS | SS | Bedok North |
| Union Security Services Pte. Ltd. | East | Data Centre | SS | SS | Pasir Ris |
| Union Security Services Pte. Ltd. | East | Data Centre | SS | SSS | Telok Blangah |
| Union Security Services Pte. Ltd. | East | Data Centre | SS | SS | Sengkang |
| Union Security Services Pte. Ltd. | East | Data Centre | SO | SO | Tampines East |
| Union Security Services Pte. Ltd. | East | Data Centre | SO | SO | Tampines East |
| Union Security Services Pte. Ltd. | East | Data Centre | SO | SO | Tampines East |
