Straight black hair, worn long and without a wave in it, is the first thing anyone notices. Angelika stands 172 cm and carries an athletic build that comes from training early rather than from a stylist. Her eyes are brown and steady. For a Mayfair evening she wears dark tailoring, one well cut coat and almost no jewellery, and she looks entirely at home in a room she has never walked into before.

She speaks English, only English, and she speaks it plainly. Mid twenties, quick to read a table, content to let a silence sit for a moment rather than rushing to fill it. She runs most mornings and swims when the weather turns. The humour is dry and shows up late, generally somewhere around the second course. Guests who book her once generally ask for her again.

A W1 evening with her often opens at Isabel Mayfair on Albemarle Street, upstairs where the room stays warm and the noise never climbs too high. She orders early, eats properly, and keeps her phone out of sight for the whole of dinner. Mayfair is her home district, so the walk back to your hotel is one she can do without looking at a map, and she will take the long way through the side streets when the night is dry.

Seven o'clock is when she is easiest to place, and W1 lobbies are her own neighbourhood. The Mayfair zone page sets out the postcode and who else covers it. Give the desk a night and a hotel and the answer comes back fast, yes or no.

Nothing has been written up under Angelika 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.