I think you'll just have to take your chances on the usual suspects that crop up on adultwork, which could all have fake photos and/or be ladyboys.
The only profile that's caught my eye has been this one:
External Link/Members OnlyI don't think there's ever even been a legit asian escort in the north east, either independent or at an agency. There's "bangkok escorts" I think, but again, potentially bait and switch. Shame, as they'd make a killing.