Main thing is, once you've got your seed potatoes don't leave in the warm and the dark, otherwise they will develop long pale shoots just like the ones in the bag you forgot you had in the kitchen cupboard. I bought 3kg of Pentland Javelin from my local shop, then discovered Poundshop are selling 10 tubers of selected potatoes for £1, so bought a pack of Desiree. As I live on my own, I'd rather have smaller quantities of different varieties. I have unpacked all the spuds and stood them in egg trays (with labels so I don't forget which is which) They are now in the "conservatory" (posh name for back porch) waiting for spring to arrive.