| C. E. WARREN & CO LIMITED | Private company limited by shares | Dissolved |
| WARREN & COMPANY LIMITED | Private company limited by shares | Dissolved |
| J WARREN COMPANY LIMITED | Private company limited by shares | Live |
| Warren Company Limited | Private company limited by shares | Dissolved |
| OAR WARREN LIMITED | Private company limited by shares | Dissolved |
| Warren Limited | | Live |
| Chace Warren Limited | Private company limited by shares | Live |
| WARRENDER LIMITED | Private company limited by shares | Dissolved |
| WARRENFIELD LIMITED | Private company limited by shares | Dissolved |
| WARRENFIELD LIMITED | Private company limited by shares | Dissolved |
| WARREN-K COMPANY LIMITED | Private company limited by shares | Live |
| Warrensburg Limited | Private company limited by shares | Live |
| WARRENTON LIMITED | Private company limited by shares | Dissolved |
| WarrenWoods Premium Management Limited | Private company limited by shares | Live |