Zone one door times, W1 through WC2 to SW1

W1 is the wide half. Mayfair and Piccadilly at the south end, Soho and Fitzrovia in the middle, Marylebone at the top, with W1K 4HR on Brook Street, W1B 1JA facing Portland Place and W1J 9BR on the Piccadilly frontage. The postcode changes letter every few hundred metres, which is why the desk asks for the building rather than the district.

WC2 runs east from Leicester Square through the Piazza and along the Strand, where a hotel sits behind its forecourt at WC2R 0EZ, the only street in the country where traffic drives on the right. SW1 begins at Trafalgar Square and holds Whitehall, Westminster and St James’s, with SW1A 2BD a minute from the Embankment and SW1X 7RL over where Knightsbridge begins.

Four stations sit roughly five minutes from the centre of the zone: Oxford Circus on the Bakerloo, Central and Victoria lines, Piccadilly Circus on the Bakerloo and Piccadilly, Tottenham Court Road on the Central, Northern and Elizabeth line, and Green Park on the Victoria, Jubilee and Piccadilly. Any of the four puts a companion within a short walk of the majority of the hotels on this page.

Between seven and nine the roads are slower than the platforms, particularly along Piccadilly and through Trafalgar Square, so arrivals crossing from west to east usually come by Tube and walk the last few hundred metres. After about ten the traffic thins and a cab from Marylebone to the Strand takes fifteen minutes instead of twenty five. The desk quotes whichever is honest at the hour you are asking about.

Half past six, when the pre dinner drink is booked and somebody has just got back to the room. Half past seven, when the curtains go up in WC2 and the tables fill in W1. And quarter past ten, when the theatres empty at once and half of Zone One wants a taxi at the same moment. Messages arriving in those three windows are answered in the same ten to fifteen minutes as any other, but the choice of name is widest before six.

Nights that run through to the morning, an event with a guest list, or a journey out of the zone want a day of notice rather than an hour, because the diary has to be cleared rather than slotted.

Somebody two or three nights into a W1 or WC2 hotel, with a table booked and nobody to sit across it. Residents of the mansion blocks and the serviced flats who would rather not travel at all. Visitors here for a conference at one of the SW1 halls who finish at six and have the whole evening free.

Almost nobody books blind. Most write with a name from On The Books already chosen, an hour in mind and a building to send her to, and the reply confirms all three.

W1K 4HR has a small front desk and a long art deco corridor, so an arrival there reads as somebody meeting a guest for dinner. WC2R 0EZ splits its entrance between the forecourt and the river side. W1J 9BR keeps its Arlington Street door for guests who prefer not to use the Piccadilly one, and W1B 1JA faces the BBC across Portland Place.

SW1A 2BD sits between the river and Whitehall with a courtyard entrance that sees almost no foot traffic after ten, and SW1X 7RL on Wilton Place has a lift straight from the door. These are buildings the desk sends companions to, nothing more. No hotel has an arrangement with this house.

Write with the hour, the length, the building and either a name or a sentence about the evening you want. Romilly holds the desk at every hour and answers in ten to fifteen minutes, on WhatsApp or on Telegram, whichever you already have open. The reply comes back with her arrival time rather than an estimate.

One check follows, once: the name on the reservation, the building and the room number, matched in the same thread and then used for nothing. Her fee is handed to her, in her hand, in the first minute she is in the room.

Arrivals inside the three postcodes generally land within forty minutes of the desk confirming, and rather faster when she starts on the same side of Regent Street as you.

Michelle crosses from Chelsea in about twenty five minutes and hosts an evening the way other people host a dinner party. Thea comes in from South Kensington in twenty, gentle company for a quiet room. Violetta travels the same twenty minutes from Belgravia, formal at the door and extremely dry by the second hour.

Angelika is already inside W1 and reaches most Mayfair doors in under forty minutes. Karolina lives four minutes from the Opera House and knows the curtain times better than the box office. Jasmin walks Soho rather than rides it. Liana comes down from Marylebone and is the restful name on the list when the day has been all talk, and Margo is fifteen minutes in from Knightsbridge and the most composed person at any table.

Everybody else on the list reaches these postcodes for the same money, journey counted.

West of Regent Street the zone becomes Mayfair and, at its southern edge, the long avenue of Piccadilly. East of it, Soho starts at the first side street and runs down to the theatres. Across Charing Cross Road the Piazza opens into Covent Garden, and south of Trafalgar Square the government quarter begins at Westminster. The whole western postcode is mapped on the W1 page, and the West End proper sits between all of them.