This is our 3rd year at out allotment, and the previous 2 the potatoes have all been ruined by blight completely.
This year we didn't bother trying, and to be honest I don't think we'll ever bother again. They take up so much space, and when you can't harvest a single spud, its so upsetting. This year we planted loads of other things instead, and its great. With the possible exception of new potatoes, I can't tell the diff between main crop supermarket and home grown !
I did grow some Anya in a couple of potatoe bags on the patio though, which have been fine, and have satisfied my need to grow spuds !