As an actual British person I can confirm Laura Bailey's accent is very phoned in and generic. Also practically Boone speaks like that.
Oh, I see. Well, as a person who's generally surrounded by either American-speaking or Norwegian-speaking people, it sounded believable to me.
LB has a wide range atleast. Christie Serah Farron Pyrrah Rise Kujikawa Female Voice 1(SR3 and SR4) Helena Harper etc. etc.
... It's a fake accent. And a lousy one at that.