Nicola Sturgeon is to warn the Prime Minister she will "shatter beyond repair" the notion that the United Kingdom is a partnership of equals if she turns down a request from the Scottish Parliament to hold a second independence referendum.
"Any bid by the UK government to block the people of Scotland from making a choice will be untenable, undemocratic and totally unsustainable - and clearly shows that the UK Government recognises it is out of step with the Scottish people", she said in a statement.
Davidson said voting on independence without knowing how Britain was faring outside the European Union would mean that "on the most important decision we can make, we would be voting blind". At stake was Scotland's approach to immigrants such as Zawadzka.
He added: "The truth is it should not be for either Theresa May or the Scottish Government to decide Scotland's future - that choice belongs to the parliament and the people of Scotland, and it is one this party will never shy away from".
A referendum announcement had been in the pipeline for months, and had little to do with the current state of Brexit negotiations.
May said she was opposed to a second independence referendum while Brexit talks with Brussels were continuing.
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Scottish First Minister Nicola Sturgeon announced earlier this week that she will seek a referendum on Scottish independence to be held between the fall of 2018 and the spring of 2019, so Scottish voters can decide whether to leave the European Union with the rest of the United Kingdom or to go it alone.
"Whatever our different opinions on independence, we can all unite around this simple principle: Scotland's future must be Scotland's choice", Sturgeon will tell delegates, according to extracts of her speech released by her office.
On Thursday, May said that people should first learn the results of the Brexit talks before asking for another referendum, stressing that it was not the right time for such a vote to be held.
He will also call for the repatriation to Scotland of £800m spent by the EU.
Julia Hartley-Brewer has challenged a member of the Scottish National Party over the position of Scotland in the education league tables. "We are not some kind of pretext", he ripostes, "we are real people, living next door to you, teaching your children in your schools, training your religious ministers (as my wife does), fixing your broken pipes, serving your dishes and ales at your restaurants". We can look forward with optimism and hope. "We will put our proposition to the Scottish Parliament next week and then we will put our formal proposals to the United Kingdom government". "May's announcement corresponded with pundits" predictions that a second Scottish independence vote would turn on a question of timing.
Apart from anything else if it did not have Westminster approval, such a referendum could potentially be illegal, and could be challenged in the courts.