I went to Clark's to buy school shoes, and saw an advert in store "£5 off Children's Sports Shoes" so picked up some Pumps for PE- to be told at the till Pumps are full price because "Clark's do not class them as sports shoes".
I politely pointed out the pumps are displayed amongst the rest of the "sports shoes" and in reality what else are they worn for other than PE/Sports. Both staff at the till agreed.