No criming

Crime statistics in the United Kingdom refers to the data collected in the United Kingdom, and that collected by the individual areas, England & Wales, Scotland and Northern Ireland, which operate separate judicial systems. It covers data related to crime in the United Kingdom. As with crime statistics elsewhere, they are broadly divided into victim studies and police reports.

Official police statistics on crime in the United Kingdom are not completely accurate due to widespread under-recording by police of reported crimes, known as "no criming". In the aggregate an average of 19% of crimes reported to the police are not recorded, with one quarter of sexual crimes and one third of violent crimes not being recorded. Further, this varies significantly by area: in the year to March 2011, 2% of reported rapes in Gloucestershire were recorded as "no crime", while 30% of reported rapes in Kent were so classified, making accurate comparison difficult.

The Crime Survey for England and Wales is an attempt to measure both the amount of crime, and the impact of crime on England and Wales. The original survey (carried out in 1982, to cover the 1981 year) covered all three judicial areas of the UK, and was therefore referred to as the British Crime Survey, but now it only covers England and Wales. In Scotland and Northern Ireland, similar surveys, namely the Scottish Crime and Victimisation Survey and Northern Ireland Crime Survey have similar purposes. These surveys collect information about the victims of crime, the circumstances surrounding the crime, and the behaviour of the perpetrators. They are used to plan, and measure the results of, crime reduction or perception measures. In addition, they collect data about the perception of issues such as antisocial behaviour and the criminal justice system.

Other crime surveys include the Commercial Victimisation Survey, which covers small and medium-sized businesses, and the Offending, Crime and Justice Survey, with a particular focus on young people.

...
Wikipedia