a three minute clip of john snagge (yes, the john snagge) speaking on the beginning of the war and the practical adjustments that the bbc undertook in preparation of all eventualities. i think you will enjoy the anecdote about the bbc official who left london with a hundred pounds in his pocket and a secretary, and who arrived with a hundred secretaries and one pound. and then there is his account of the practice air raid evacuation which punchline i won't tell you here but has to do with people enjoying themselves out in the woods.