That's exactly what I meant about the wider community. I moved from Glasgow to England when I was 7, and my accent had gone by the time I was 10, because apart from my parents, an aunt and an uncle, all the voices around me were southern english. But one of my cousins, who was much younger when he left Scotland, moved to Corby with his family where there is an enormous Glaswegian community, and he still sounds Scottish, in his late 30s, as do lots of other people there.
Mean_genie