Also if I'm correct here, that...

Voice 2 is Jen
Voice 4 is Devora
Voice 6 is Sam
Voice 8 is Amelia

The issue is not so much that the voices are similar, or too British or whatever, but that the bark lines themselves are identical.

It's not like one voice set says "Lets hope the locals are friendly" while another set says...

"Lets hope the locals haven't heard about what we did"

"Good, the locals will never see it coming"

"No one is more local!"

Stuff like that