| Name | Location | County | Country | Power source | Type | Function | River |
| Lower Mill, Ruan Minor | Ruan Minor | Cornwall | United Kingdom | Water | Watermill | ||
| Poltesco Higher Mill, Ruan Minor | Ruan Minor | Cornwall | United Kingdom | Water | Watermill | Corn mill | |
| Poltesco Lower Mill, Ruan Minor | Ruan Minor | Cornwall | United Kingdom | Water | Watermill |