Giok, I speak from personal experience.
My children endured six years of abuse at a large Scottish academy for simply having been born in England. They were spat upon by pupils not once but on many occasions and were called 'English whores'. My remonstrations with the teaching staff, one of whom sneered openly and dismissed my protests with 'Well, they ARE English, so they'll just have to develop thicker skins, won't they?' changed absolutely nothing.
Thirty years ago I bought a holiday property quite near to where you live, just outside Lairg. Having no further use for it after my children left to go to University I offered it to them as a gift. Neither would have it, and both have said they will never again set foot in this country.
Ten years ago, while enjoying a quiet evening in a Scots village pub in the company of my wife, one of my clients and a guy who worked for me we were approached by a group of young local men. They took exception to the fact that my wife's accent marked her as English, and mistakenly thought that I too, was English. We ignored them, offering no response or argument and my client, also local, felt thoroughly embarrassed as he asked them to just leave us alone. Throughout the evening the phrase 'There are too many English bastards here' was called out from one of the young guys to another.
We left, and as we and walked to my client's house the young men from the pub drove their car along the pavement(sidewalk) behind us. The roars of laughter from inside the car when they knocked us down continued as they drove away. The others in our party were shaken but unhurt, while I was left with spinal injuries. I worked for all of my life until the moment that car hit me, and was about to set up a residential training centre to teach others how to make farmhouse furniture using simple hand tools. The premises had been bought and paid for, the workbenches half assembled, the advertising details nearing finalisation. All stopped. By what? The insanity of blind prejudice, that's what.
I speak from hard experience, not PC or suchlike nonsense.

So tell me again, John, that I'm a prig, or that I talk pious rubbish.