hello WM,
if you are in the UK , I forgot to look !!, it is too late to plant them now ... the frost would get them before they could grow properly UNLESS !! you have a greenhouse or polytunnel you can plant them in. You can grow potatoes for anytime of year really, as long as you can protect them from the frost. You could also grow them in tubs or dustbins under cover . It all depends on how many you have , and how much work you want to put into them really. They will grow ok though , till the frosts come , then you have to either move them into a g/h or p/t , if they are in tubs or d/bs.
hope that helps
cheers
Russ