Mr. Allan Walker is known to be an enthusiast for, and an expert on, the antiquities and architecture of London and its surroundings. Everyone who has heard his lectures or his broadcast talks knows that he would he an ideal companion for a walk, especially along a road so full of interest as that from Edgware, on the historic Watling Street, to Stanmore, as he would certainly know all about everything on the route, and nobody can make information interesting more deftly than he. This afternoon listeners can enjoy his company on this walk by the medium of their wireless sets.