Ancient though I feel at the moment, I did have the pleasure over most of my working life of regularly visiting all parts of the UK (but not Ireland). This enabled me to form my own opinions about what I had seen and the various nationalities I had encountered. My conclusions were, broadly:
1) That the UK is a mainly beautiful country, peopled a group of nations who had formed, after a tempestuous past, a homogenous, tolerant and reasonable society.
2) That national differences were, indeed, evident all over the place, but that in general anybody could travel from north to south to east to west without too much fear of serious intimidation or prejudice. True there were areas of minor differences: southern English people often had a patronising view of northerners, as did those from Yorkshire and Lancashire about each other and southerners. North and south Waleans were the same regarding each other. Lowlands and highlands Scots were often exactly the same, whereas Islanders often regarded themselves more Norse than Scots.
3) That more serious pockets of petty local prejudice did exist: I knew that there were areas and places in Wales and Scotland (and even, sadly, sometimes the north-east of England) where I would be less than well received just because I came from Southern England.
4) That the consequences of the Thatcher years had upset the applecart everywhere - certainly not only in Scotland - leaving the country in a much less united state.
Now, I don't have to justify specific cases of prejudice. If you look hard enough you can always find evidence to confirm your own views and opinions whatever they are (this is one of my gripes at the moment as regards the media in general). I haven't been to Scotland for many years so cannot judge the prevailing mood of the moment on the ground. I suspect, however, that the way this referendum has been handled has reopened many wounds and folk-memories, revived animosities and encouraged sectarianism and racism. I find that certain representatives of the 'yes' campaign have an unpleasantly hostile, aggressive and nationalistic attitude which I am sure is most unhelpful. I hope that it does not result in widespread social unrest.