Analysis from the Office for National Statistics suggests there is a discrepancy between police records of crimes and the Crime Survey for England and Wales (CSEW).
The CSEW works by "asking people whether they have experienced any crime in the past year," whereas police records are based on officers recording offences in their patch.
The differences between these methods may give rise to discrepancies, although the exact reason why police records appear to overstate crime reduction is a matter of controversy.
More top news
Singer paid emotional tribute to victims of the Manchester Arena attack, saying 'it's awful... and whatever you can do to help, you should'.
The broadcaster, who also writes for MailOnline, 'agreed' with the radio station that she would no longer work there.
The US grunge star was found hanged and leaves behind his wife and three children.