Plenty of Maris Pipers in Tesco, Asda and Lidl down here - I buy them for chips.
We also bought a 25kg bag of Wilja potatoes for £8 from a local farm. My OH spreads them out to make sure they are completely dry and then put them into hessian bags or paper sacks. They keep fine in the cool shed, and get covered with a blanket in case of frosts.
Bought the wrong Hot Cross Buns 😩