Scotland and NI wanted to stay by large margins, England and Wales to leave by much smaller margins. Were a majority of the four required to pass the referendum, it would have failed on a 2-2 tie.
http://www.bbc.co.uk/news/uk-politics-eu-referendum-36612308
Wales voted by a 52.5% to 47.5% margin to leave.
There are very few countries in the world where a non-binding referendum with that kind of margin would be considered a mandate to make a fundamental change to the constitutional basis of the country.
I think if '52-48' is redefined as a 'big margin' then it becomes very hard to define 'a narrow margin' without running into the impact of statistical noise.
Efforts to paint this as purely an English problem are bizare, even in Scotland around a.third of voters voted to leave the EU. Surely that pojnts to huge dissatisfaction even without a majority for leaving?
That's a pretty big change in the game and wasn't really on people's minds in 2014. I certainly wasn't thinking about the EU exit in 2014. In fact, in 2015, a 2016 EU referendum wasn't widespread knowledge.
In fact, I was shocked by the leave vote. Almost as much as the Conservative majority a year before. I'm from Salford too and the vote was a highly Leave. I'm sure those in Scotland felt that more so.