We don't have an equivalent law of unfair competition here in the UK. Passing off is as close as it gets, which depends on a damaging misrepresentation of some kind of commercial connection with a brand/product that has achieved a degree of goodwill. Often a tougher ask than proving unfair competition.
Even so, it looks like one of the UK retailers referred to in the article, Sugarsin, has also scrapped the bear design. Coincidence? I see they've also changed the "Prosecco" label which is a separate issue, likely with the Prosecco Consortium.
It can be difficult to stand up to legal action as a startup, which is why it's so important to get your DD right before entering a new market.