30cm (12") deep single bed mattress. (Dunblane FK15)

This mattress is a near-new top-of-the-range Slumberland that was recently bought but was unused in my old house in Causewayhead. It is exceptionally deep at 30cm and is unsuitable for the bed it's now on (a motorised one) nor for the one that will replace it. It's quite heavy, will NOT fold and I've added the photo to give some idea of the depth. Bed linen, etc., is not included.