It's funny... until I started collecting and watching Buffy and Angel on DVD, I had no idea that really, the only real
Brit on either show is Anthony Stewart Head. I guess faux-accents don't really bother me. Walter Koenig isn't really Russian; nor was Jimmy Doohan really Scottish. Over on LOST, Daniel Dae Kim, Henry Ian Cusick and Naveen Andrews sound almost nothing
like the characters they play. It's almost a requirement in Hollywood these days.
In short, I don't see what the big deal is that Holly uses one too.