Two policemen and the Trafalgar Square Christmas tree, 1948

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"Yes, Dickie, but I don't think this gentleman is very interested in policemen. Uncle Alf - that's Mr Ingles - told me this morning that he likes to have a few policemen around at this time of year. He said they reminded him of Christmas, but I can't think why, can you?"
Malcolm Saville Wings Over Witchend (1956)