So for shits and giggles, I did an advanced search here on TER on the following criteria (granted, these are the extreme):

9 - 10 appearance
9 - 10 performance
Escort
Incall
Massage Private-to-Private
CIM
Greek
18 - 30
multi
FK
location: did not specify
ethnicity: did not specify

Result: only one page was returned and all the ladies were located in London. Interesting? I thought so.