Ban cash purchases over £500 in all stores in UK, which will reduce criminals ability to spend cash from crime (drugs, watches, cars etc).
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There is a rapid rise in number of thefts, robberies, vehicle thefts (armed and not armed) in the UK. Gangs/teenagers are committing more of these crimes, as there is rarely an arrest following the crime, encouraging them to be repeat offenders due to ability to make quick cash, without getting caught.