If the ancient British population replacement was mostly by males, wouldn’t there still be a significant amount of mitochondrial DNA from the earlier population. Also was the almost total replacement true for Wales, Ireland and Scotland?
I was just going by what the article said.
At any rate, yeah, I would suspect that you’d be right.
I'm not too sure we should rely very much on DNA studies in the first place, but in this case, the neolithic samples they're working with must be very small in number. That doesn't answer your mtDNA question, apologies.