The UK does not need another referendum. Let the nations that voted leave, namely England and Wales, leave the EU. And let the nations that voted stay, like Scotland (62%) and Northern Ireland, stay in the EU.
I don’t believe they voted to stay, for one (I sense fake news); and the UK joined as a whole anyway so it’s not up to any outside entity to determine such a thing. And finally, to vote to be a province of a foreign entity, really?