What the postcode actually covers
W1 is not one district but a dozen, split into letters most Londoners could not name under pressure. Ours are W1K and W1J for Mayfair and the Park Lane side, W1S for the Bond Street windows, and W1H at the Marble Arch end. The letters are useful because they tell you how far you will walk: anywhere inside W1K, W1J and W1S is fifteen minutes on foot from anywhere else inside them, with W1H adding another ten at the top of Park Lane. That is why an evening arranged in this postcode almost never needs a second taxi.








