The best ones are dying out. I like the Buckinghamshire accent but I don't hear it from anybody without a bus pass.

Also the one which probably didn't last for more than a generation which is the Essex / Cockney hybrid spoken by a handful of people who grew up before the war in places like Collier Row, then a hamlet, now swamped by suburban housing on the edge of London.

I think that busing kids to large comprehensives is helping to homoginize accents.