I remember the Escort Agencies until about 20 years ago in Central London. Portman off Baker St, and the Playboy off Kensington High Street. They came in one by one, introduced themselves, and you told the receptionist which you pick and she will come into the small reception room for a short chat. There was also Chelsea Girl in Beauchamp St, Knightsbridge, and Sophisticats in Marylebone. I took out a lady who turned out to be a big natural boob pornstar (I shouldn't out her). Oh and The Gallery on Kings Road also.