I was a police officer and was part of a firearms team in the City of London police. Our driver was born in 1936, some 10 years before me. He told a story of how he, as a 10-year-old, had entered bombed premises, a block of 'flats', about six stories high, and started a fire on a tin tray in the middle of a top floor room, not the fireplace for some obscure reason. There was no intent to damage property, merely keep warm. A police officer had entered the building, they had run out.