You should have a good time there. The girls change either weekly or fortnightly. Massages can vary from very professional and legit to more sensual with lots of cc swipes etc. Extras are always offered after 30 mins. HE is £20, B to B £40. Some try to get more. Extras on top of extras are negotiable and up to the girl and how well they know you.
Enjoy and let us know how you got on.