Except for London, this pic shows a parallel with historical sentiments re the Scottish versus English.
Because for centuries starting with the Hundred Year Wars period, the Scottish allied with powers on the continent against the English (usually with fellow Catholic France, but also with Catholic Spain). I'm wondering whether that history, possibly affecting Scottish sentiment, is a factor for the them to favor staying. And will they move to separate from the rest of the UK with the latter Brexiting?