You will find them all listed in cunning website called
http://go141.com/en/
However, Lots of ladies to chose from often mean lots of other punters knocking about with long lines as well for the more popular girls in the building. I often find that it is better to visit the quieter places, the buildings with no so many birds in there not least because they don't rush you out the door to serve the next punter in the production line. Also I like to pretend they are a virgin, and seeing a line of 14 other blokes in front of me go in and out sort of spoils the romance.
Ultimately, it will not be about the building per se but the actual girl you get with. I always lined SW Bonham strand area. Lots of buildings within a short walk from each other, and never really busy except for Lunch times straight after work time. Rest of the time you get a choice and no one waiting.