An “outward-looking, free-trading” Britain can provide people across the UK with the security and opportunity they crave, Ruth Davidson will say in a keynote speech this evening.

Saying the country must reject the path of “economic nationalism”, she will set out a vision for a country that “pushes at our boundaries, instead of building walls”.

And while the SNP has sought to use the UK’s vote to leave the EU as reason to ramp up its campaign for another referendum, Ruth will say that – in contrast – it has made the case for Scottish independence “weaker and more illogical than ever”.

Nonetheless, she will say the UK needs to face up to an SNP government which has watched the tactics of the Leave campaign, learned from them, and is now “itching to get its own campaign bus into gear”.

She will say that a key argument against independence will be on trade – pointing to how Scotland’s trade with the UK is worth four times that of exports to the EU.

Voting to leave the UK in response to Brexit would be akin to “stubbing your toe, to then amputate your foot”.

In tonight’s address, she will also say it’s vital politicians respect the result of referendums, and had Scotland voted for separation in 2014, she wouldn’t have denied it nor demanded a re-run.

Scottish Conservative leader Ruth Davidson said:

“The SNP is a formidable political operation which – I suspect – has learnt from the tactics of the Leave campaign last year and is itching to get its own campaign bus into gear as we speak.

“So my view is that the case for the Union must be made afresh, and we have to persuade people once again that our own Union of nations still works for us all.

“And there is something of a Brexit paradox here.

“Because while Brexit has provided the means for Nicola Sturgeon to crank up her independence campaign once more – it has also made that case weaker and more illogical than ever.

“As we learned only last month in official Scottish Government statistics, trade within the UK internal market is worth four times to Scotland than trade with the EU.

“The logic is therefore clear.

“If everyone in Scotland agrees that free trade with Europe is important – and we do – it is literally impossible to deny that trade with the rest of the UK matters four times as much.

“But rather than accept that logic, the same old nationalist contortions are applied.

“It is already cranking up the grievance machine in an attempt to push people towards the exit door.”