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Arch Brexiteer Daniel Hannan tried to tweet about EU tariffs on wine, but ended up proving we probably do need experts after all.

The Tory MEP prominent anti-Europe campaigner took issue with a report claiming Chilean wine could be 14% more expensive after Britain leaves the EU.

The report, sent to Trade Secretary Liam Fox by the British Retail Consortium yesterday, said shop prices on a range of goods would go up considerably if Britain was forced to default to World Trade Organisation rules.

But Mr Hannan tweeted this morning that the claims of an increase in the cost of Chilean wine was "idiotic."

Here's his tweet

And he's right, isn't he? If we suddenly don't have to pay a 35% EU-wide import tariff on wines, then surely Chilean wine will be cheaper, not more expensive.

There's just one problem

Oh. Chile has a free trade agreement with the EU. That means Chilean wines imported to the EU wouldn't be subject to tariffs. That's awkward.

Mr Hannan realised his mistake

Well, at least he's owned up to it.

But hang on...

Actually, there are two problems

Oh that's even more awkward.

Apparently the figure of 32% is from an incorrect briefing note issued in September 2013. It was corrected in June to remove the error.

Turns out the actual rate is around 8p a bottle.

So maybe we should listen to the experts?

Only if you're looking to make decisions based on facts and evidence. Up to you, really.

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