Tampons could be 5% cheaper.
That's a sillier argument than you know.
UK starts using VAT. Decides to charge it on Tampons.
UK joins EU. Agrees that it will not stop charging VAT.
(many years pass)
UK decides it wishes VAT wasn't charged on tampons
UK moans and grumbles.
(more years pass)
UK PM goes to EU and says "we'd prefer not to charge VAT on tampons"
EU says, "fine, if that's what you want, we can change the rules. Why didn't you ask sooner?"
UK moans and grumbles.