I grew up in Australia, but have been back for over 20 years. I worked hard to get rid of my accent, but some very keen listeners have picked *something* up and asked where I’m from. Only one person actually pinpointed the very scarce accent as Australian.
Grew up in England eons ago - when it was possible to detect; by accent alone, the person’s village of residence.
The English dialects are becoming homogenized - which is rather sad. I hate the present-day “BBC” accents. Everyone has identical, semi-Cockney, nasal monotones - with a tedious inflection/rythm.