I've used this agency in the past, when an hour was £120 and the girls were genuine part-timers.
A few years ago things went downhill - maybe the owner/management changed.
The descriptions were exaggerated, the prices went up and the quality of the girls deteriorated. I booked a supposed "stunning 15 year old brunette" who turned out to be a 35 year old grotbag with a moustache. I refused to pay and had a row with the madam over the phone.
I'm surprised they've survived this long.