Well I managed to find something to plant them in. There was an old large floppy plastic tub with the handles bust that we were going to chuck and I had a big plastic box with wheels that I used to store apples and spuds in lying in the garage. Drilled holes in both and filled it full of spent compost from last years tubs and containers with some fertiliser. Planted 3 first early spuds in both and, for the moment, put them in my cold greenhouse.
Lets see what happens!