| POLYDATA LIMITED | Private company limited by shares | Dissolved |
| POLYDATA CHINA LIMITED | Private company limited by shares | Dissolved |
| POLYDATA COMPUTER LIMITED | Private company limited by shares | Dissolved |
| POLYDATA INDUSTRIAL LIMITED | Private company limited by shares | Live |
| POLYDATA INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| POLYDATA SOFTWARE SERVICE LIMITED | Private company limited by shares | Live |
| POLYDATA SYSTEMS LIMITED | Private company limited by shares | Dissolved |
| POLYDATA TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| POLYDATA TRADING LIMITED | Private company limited by shares | Live |