Government Regulations[1]
> According to the Costco U.K. website, memberships to those stores are only available to certain groups of people. Since the store is classified as a wholesaler, this complies with the U.K.'s wholesale store laws. These dictate that wholesale stores are only accessible to those working for select business sectors.
[1] https://www.thedailymeal.com/1483679/costco-uk-membership-re...
It's funny when quintessential American business models bump up against foreign regulations and they have to find workarounds to keep in line with the law while trying to stay true to character.
Not long ago I was in a Five Guys in France. There was a sign saying that by law free refills are not allowed, please scan the qr code to fill your cup. I guess there was a qr code on the receipt, I don't know, as far as I can tell there was no enforcement and people just kept filing up their drinks like true Americans. Let freedom ring, I guess.