One of the world's great cities, London has long been an icon. This selection of 20 postcards, gives a flavour of the city, its medieval, classical and ultramodern architecture, sumptuous palaces and distinctive bridges and the pomp and pageantry of British tradition. Each postcard, which includes detailed information about the photograph on the back, can be peeled off and posted or kept as a memento of a great city. All images have been hand-picked from the archives of the Press Association.