| DRAGON ISLE LIMITED | | Live |
| EMERALD ISLE LIMITED | Private company limited by shares | Live |
| HARBOUR ISLE LIMITED | Private company limited by shares | Dissolved |
| MID ISLE PUBLICATIONS LIMITED | Private company limited by shares | Live |
| Isle of South Company Limited | Private company limited by shares | Live |
| ISLECO LIMITED | Private company limited by shares | Live |
| ISLEDON LIMITED | Private company limited by shares | Dissolved |
| ISLEHAM ENTERPRISES LIMITED | Private company limited by shares | Live |
| ISLER LIMITED | Private company limited by shares | Dissolved |
| Isler & Company Limited | | Live |
| Emerald Isles Company Limited | Private company limited by shares | Live |
| ISLETON LIMITED | Private company limited by shares | Dissolved |
| Islet-Studio Limited | | Live |