I volunteered to peel the potatoes tonight and picked out two of the huge Sarpo Mira tubers from the "Eat now" sack - containing all the tubers with damage from slugs etc. or the spade. Each was at least 10 inches long and as thick as my forearm - absolutely huge!
As I peeled them I was pleased that almost all of what looked like slug holes were surface marks so I had no digging out to do.
However, as I cut them down into usable pieces I came across holes in the centre. Investigating, I found internal splits or cavities probably caused by uneven watering.
Just the one hole, on the right nearest the peeler, was from slug damage.
Fortunately the tubers were so big that the ends of both made enough potato mash for two meals!