I heard from one of the girls that used to work there that whenever she was working there was always a new Romania starting work. She said that it was turning into a real conveyor belt which was one of the reasons she left recently.
MrD always said that girls wanted to work back-to-back to maximise income and minimise non-earning gaps...I always suspected that system was more for the establishment's benefit rather than the girls or punters.
I was told by a HoD Romanian girl that the English girls she worked alongside were not friendly, apart from Chloe (aka Karlie Simon)...but then she was young, fit & gorgeous, so they were probably jealous of her.