With regards to Scotland independence referendum, a British Conservative polician, Michael Gove, recently said Scotland is disrespecting the 2014 referendum results, considering that Scottish people already held a referendum. Actually, as Mr. Gove mentioned, the 2014 independence referendum would be "once in a generation event", and Scotland agreed on this point. But since 2020 circumstances have changed because Scotland will be out of both the Single Market and the Custom union. In other words, Scottish people will be out of the EU against their will.
It is easy to see the 2016 Brexit referendum's results changed everything, and only 37% of the electorate voted leave or remain in the Single Market. In addition, not one person born in the XXI century voted in favour of leaving the EU.
Consequently, as it is known, the UK Constitutional principles, the international law, and the Self-determination principle gives the right to the Scottish people to hold another independence referendum, considering that since 2020 circumstances have changed.
That's the reason why if Mr. Michael Gove and his political followers continued to talk about the disrespect of the results of the 2014 Scottish referendum, people might get a wrong idea.