Mayfair, after ten.

Every city has two kinds of bar: the ones designed to be photographed, and the ones designed to be talked in. Mayfair has the highest concentration of the second kind anywhere in London — hotel bars mostly, dim and unhurried, where the barman remembers a face and the music stays under the conversation.

A quiet hotel bar in Mayfair, late in the evening

Why hotel bars win

A great hotel bar answers to the hotel, not to the crowd, so it never chases a scene. The American Bar tradition — proper stools, a short list done perfectly, service with some formality left in it — survives in Mayfair better than anywhere. You can arrive at ten, dressed from dinner, and the room simply absorbs you.

The membership clubs get the press, but a first-rate hotel bar is open to anyone who dresses for it — which is its own quiet filter, and a fairer one.

The counter, not the corner

Take the counter if there are two of you. Corner tables are for meetings; the counter is for conversation — side by side, the room in front of you, the theatre of the making included. It is also where the bartender’s recommendations get interesting.

What to order

A martini is the honest test of a bar, and in Mayfair it is safe to apply. Otherwise, ask for something dry and let the bar decide. The mark of a good room is that the question is welcomed. One drink taken slowly beats three taken carelessly — the point of after ten is the hour, not the volume.

The hour itself

Ten until midnight is the window. Dinner crowds have thinned, the room settles, and London is at its most forgiving. It is the hour the city seems designed for — and it is far better shared.

The evening rarely ends at dinner. The seat beside you is another matter.