Only the woman road sweeper shovelling the snow from the bus stop sounded a critical note.

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Between midnight and 06:00, the roads are first swept and jetwashed by a machine similar to a road dust sweeper.

BBC: Boris Johnson sticks by gluing pollution to roads

He said residents have been asked to dispose of their litter in dustbins which would then be taken away by a road-sweeper to the nearest rubbish dumping site.

BBC: Litter louts face justice on wheels