London rates sit in fairly predictable bands, and the biggest single factor is where the booking happens. Central and west costs more than east and south, for the straightforward reason that the rent does.
Typical hourly bands
As a rough guide, an hour of incall in central London commonly falls between two hundred and six hundred pounds, with Mayfair, Knightsbridge and Belgravia sitting at the upper end and areas further out sitting lower. Above that band you are into a smaller, more established tier where four figures an hour is not unusual.
Outcall runs higher than the equivalent incall, and usually carries a minimum booking length of ninety minutes or two hours. You are paying for her travel across a slow city as well as the time itself.
What the figure covers
The number on a listing is for her time. It is not itemised and should not be treated as though it were. Longer bookings almost always work out cheaper per hour, and overnight rates are substantially better value than the same hours booked separately.
Paying
Cash remains the norm. Have it counted and in an envelope before she arrives, and hand it over at the start without ceremony. Deposits of around twenty per cent are common for outcall and for anything booked well ahead.
If you are visiting from abroad
Every listing on this site shows the rate in pounds with a dollar figure alongside, so you are not converting in your head while you browse. Two things surprise American visitors in particular. Tipping is not expected here on top of the agreed fee, and the agreed fee genuinely is the agreed fee, so there is no second conversation about money at the end.