Imagine yourself back in December 1925, with Christmas fast approaching, in London where: All the pavements are alive this week with purchasers moving in ceaseless procession from window to window as they search for the particular Christmas gift for the particular person who is to receive it. They wander down street after street, for London nowadays is the finest city in which to purchase a gift – humble, rich, or rare – that the world knows. It’s time for Christmas …