When can I schedule an appointment with Miss X, and what does she look like? are the appropriate questions to ask in the US.

I see you have asked about London, are you based in the UK?  I'm an American who has lived in England for nearly 2 years now.  The rules of of the game here are much different here, where the hobby is mostly legal.  The gals be much more frank about what services are on offer on their website and over the phone, but still don't believe everything you hear/read.