WPD has now installed a mains electricity supply right next to the house and so it became feasible to install a mains supply, thus these are no longer required. I have solar panels and other supplies for sale which might be useful for someone looking to use these for a PV system.
Would consider delivering them if within a 50 mile radius providing the price is right. The item "Crown 6CRV215 6v 215ah AGM Battery x 4 (24V or 12V System) Deep Cycle Leisure" is in sale since Monday, November 2, 2020. This item is in the category "Vehicle Parts & Accessories\Motorcycle Parts\Electrical & Ignition Parts\Batteries". The seller is "jameodd" and is located in Bridgend. This item can't be shipped, the buyer must pick up the item.