Which means WTO rules increase the cost of our exports, and suddenly people decide they don't want to buy X from the UK anymore now it's more expensive than from a different country in the EU.
It's always depressing why people try to use WTO as an answer so something when the very process of doing so demonstrates they don't even know what WTO is. Is't like Mega Drive fans yelling about their consoles Blast Processing ability >.>
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Scotland voted to remain part of the UK and the UK, the 2016 Brexit referendum has now invalidated the 2014 Scottish Independence referendum and it's only right that they be allowed to revisit the decision now the UK government has changed the terms.
The UK's existing membership of the EU was the remain campaigns biggest selling point for remaining part of the EU and was responsible for swinging the vote in favour of continued UK membership, if the Brexit ref had taken place first then Scotland would have already left the UK by now.