This is insane.
That's the EU.
I recall a piece on a UK butcher a few years ago that still sold product by the pound. That, under the metric reqs, was illegal.
I think he complied with the metric labelling, but still sold it by the pound if that's what the customer wanted.
He blamed the loss of sovereignty on Tony Blair who "wants to be the EU president".
Anyway, the butcher was getting legal help from some anti-EU group.