Some time ago (18 - 24 months at least) I was with a Brazilian WG and after a couple of failed meetings (her fault) we eventually met up at her flat, close to Bond Street, and we had an excellent time. I'd booked 90 minutes and she volunteered to extend it to 3 hours as she had got it wrong. Pausing between sessions we went into the lounge / kitchen and there was another girl asleep on the sofa. She woke and joined in our chat. Put simply, for another £100 she joined us for the last hour, and was worth every penny. Sadly I never got her name, and the original WG is no longer on AW. I think her name was Sasha. It was a great moment and has gone into the memory banks.