Hi Daniel1
I am sure that in time things will work out, have confidence in what your son tells you and trust his judgement.
for what it's worth I moved to Tyneside a couple of years ago and have never settled here, it is just such a different culture. The people I meet are helpfull and kind but I just don't feel comfortable or settled here.
My youngest daughter has had interviews at Northumberland and Portsmouth uni's this past week. She tells me that if she isn't offered Portsmouth she would rather take a year out.
If you keep looking to the past events for reasons you will go around in circles. He's made a decision, just take it from here. good luck.