https://www.bbc.co.uk/news/uk-wales-55771996
People who queued for two hours after driving 20 miles to get milk from a farm's vending machine have been fined for breaching lockdown rules.
“All of Wales remains under level four "stay at home" lockdown rules, with people only allowed to travel for essential reasons, which include buying food.
Welsh Government guidance on the rules say there are "no limits on how far" people can travel to shop for essential items,…”
I haven't fully digested the Welsh legislation but from the above passage it seems, once again, police are issuing fixed penalties when no law has been broken.