Bianka is 165 cm and curvy, and she dresses for her shape rather than around it. The hair falls long, light brown, sun-kissed where it ends, and picks up whatever light a dining room is using, and her eyes are hazel, which is to say they change with the room. Early twenties. In Knightsbridge she favours soft colours, a heel she can genuinely walk in, and one piece of jewellery that means something to her.

English is her only language and conversation is her strongest suit. She asks questions and then listens to the answers, which sounds like a low bar until you have sat opposite somebody who does not. She is warm without being loud. She cooks, badly and enthusiastically, reads two books at once, and has strong views about restaurant lighting that she will share if the lighting deserves it.

Her SW1 evening is built around one long dinner. Sale e Pepe on Pavilion Road suits her exactly: a small room, staff who have been there for years, and no music to talk over. She prefers eight o'clock, orders for the table when invited to, and stays until the room empties. Knightsbridge is where she lives, so the ride to your hotel is short and she is never the one watching the clock.

Ask for dinner rather than a short booking, and give her a day of warning where you can. Who else takes SW1 evenings is listed on the Knightsbridge page, and a hotel name is all booking really needs to confirm it or offer the nearest free night.

Nothing has been written up under Bianka yet, which is usually what discretion looks like. A note goes on the board only when a client sends one in writing, she agrees to it, and the office has checked that it reads as a first name, a month and nothing private.