Really? So what's wrong with that criterion? Do you think I will need to pay more, or are you saying that they do not exist?
£280 for 3 hours Outcall is much lower than market average for London even for massages so either the lady is will need to be brand new (and will quickly put prices up if she becomes popular) or one of your criteria needs to be willing to give such as being less attractive
If your budget and your criteria is set in stone, then you might have to book 1.5 or 2 hours instead
Prices that were possible to find even 2 or 3 years ago are harder to find now