We do not hold a database of all the streets in England and Wales and in the first 3 months of data, most streets have had no crime at all. However, at least 321,000 streets had 1 or more crimes. So we have to create a manageable cut-off. Each month we take the 1,000 streets (on or near) which have had the highest total number of crimes. These are the streets we then extract to our database for measuring type of crime by street over a selected time period.
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