zigs
Cactus Grower, Kent.
Is this a winter crop that is planted in autum and harvested in late spring?
No, potatoes can't go out until frost has passed, or you protect the tops with fleece or cloches.
New potatoes are lovely if you get the cooking water boiling before you dig them and lob them straight in, but to store them it's best to wait 2 weeks after the tops (haulms) have dropped so that the skins harden before digging them.