I had 3 seed potatoes left over after I planted up 3 tubs of Pentland Javelins. I put them in the salad drawer in the fridge, to stop the sprouts growing too big and planted them in a Wilko's builders bucket a few weeks ago and they've already sprouted above the soil level.
At the first sign of cold weather I'll move them into the greenhouse, there should be space once the toms have finished.
Fingers crossed it will work - but who knows