A shortage of fuel at filling stations means many Brits aren’t going anywhere this week, but those that are thinking of venturing out of the country with their cars are being reminded that the old-style GB stickers are no longer valid as of September 28.

Drivers crossing The Channel to France, or catching an overnight ferry to Spain or the Netherlands were previously required to display a sticker with the letters ‘GB’ if their number plate didn’t have GB markings.

Read: How I Dodged Britain’s Fuel Supply Crisis…Twice

But now Brits have been told to cover up or remove the stickers and instead display a UK sticker or risk being refused entry to some countries, though in reality this seems like  worst case scenario. If the car in question already has a ‘UK’ marking on its registration plate, there’s no need for a separate UK sticker.

The move, which came about after the UK government applied to the United Nations for the identity change to be made contradicts a statement made to Brit drivers earlier this year. In January the government said “UK drivers won’t need to display a GB sticker in most EU countries if their number plate has GB or GB with a Union Flag on it”.

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British cars with older ‘EU’ plates now need a GB sticker to travel abroad

The change in lettering is likely to leave most Brits nonplussed since most of them (myself included, until I checked) don’t actually know the difference between Great Britain and the United Kingdom.

The answer is that Great Britain refers to the landmass consisting of England, Scotland, Wales and their associated small islands. It doesn’t contain Northern Ireland, which is, however, part of the United Kingdom, whose full name is The United Kingdom of Great Britain and Northern Ireland.

And the ‘British Isles’, another term that sounds similar, is purely a geographical term that refers to Great Britain and the entirety of Ireland, including the Republic of Ireland, which is an entirely independent country. See, it’s not just cars you learn about here.