The Scottish First Minister blasted the Prime Minister over a special deal and open border for Northern Ireland claiming it would be unfair to Scottish businesses.
She said: “I’m not suggesting for a second that Scotland is the same as Ireland in terms of the history.
“But I’m making the point that it’s simply not credible for a Prime Minister and I think I’m almost directly quoting her here to go to the Republic of Ireland and say ‘there will be no hard border, there will be no barriers to trade between Ireland and the UK post-Brexit’.
Nicola Sturgeon lashed out at Theresa May during the documentary on Thursday evening
It is not credible and it runs the risk of treating people as if we’re stupid
“And [then] come to Scotland and say something different – it is not credible and it runs the risk of treating people as if we’re stupid.”
It comes following suggestions a “frictionless” border could mean it is possible for Scotland to remain in the single market after Brexit.
The SNP’s leader in Westminster Angus Robertson brought the issue to attention in February after the Prime Minister told MPs she did not want to see a “return to the borders of the past”.
He used Mrs May's comments to bolster his party's call for Scotland to have different arrangements to the rest of the UK after divorce from Brussels.
PM and Sturgeon feign smiles as they go to battle over referendum Wed, April 5, 2017
British Prime Minister Theresa May met Scottish First Minister Nicola Sturgeon in Glasgow, following the announcement that Scotland is to hold a second Independence Referendum
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British Prime Minister Theresa May meets Scottish First Minister Nicola Sturgeon in Glasgow, following the announcement that Scotland is to hold a second Independence Referendum
Nicola Sturgeon wants to keep Scotland in the single market
Mr Robertson said: ”The Prime Minister has very helpfully explained that it is perfectly possible for parts of these islands to be in the single market, without hard borders, with free movement of people and at the same time protect and enhance trade with one another.
"This is very, very welcome. Will the Prime Minister give a commitment to work with the Irish government and a commitment to work with the Scottish government to deliver all of these things or will we just have to get on with it ourselves?"
Mrs May scolded Mr Robertson for ”trying to imply something that isn't there".
She said: "Of course, if he is so worried about having a frictionless border between Scotland and countries in the European Union then he shouldn't want to take Scotland out of the European Union by wanting to see it independent."