I'd never really analysed my voice. Of late I've being taking short video clips of the grandchildren on my phone often I'm talking to them in the background, it's always a bit of a shock to hear your own voice I think. I was born and brought up in Surrey, two of my closest friends have Irish parents, we went to school together, they both have cut glass English accents, not put on, they always talked that way. I don't perceive my accent to be the same as theirs, I think I had the influence of my father's London vowels , who grew up in Wimbledon, that London accent came through in a perculiar way in my heavily accented paternal grandfather who came to this country as an adult. My mother was also in London in early childhood, then her family moved to Kent, her accent was imo quite classless, she was a mixture of English, Irish and French so maybe she escaped the over riding London accent. A friend recently told me I sounded like Jenny Bond, I don't necessarily agree with that.
We recently came back from Northumberland, I like the accent up there it's very attractive, other favourties southern Irish and Welsh. I like a lot of regional accents. I'm not keen on Cockney, Glasgow Scottish, or the Scouse accent, but I like the Liverpudlian accent of the Beatles.