Figure 8: Police recorded offences involving a knife or sharp instrument have risen for the fourth year running
England and Wales, year ending March 2011 to year ending September 2018
Source: Home Office – Police recorded crime
Police recorded crime data are not designated as National Statistics.
Police recorded knife or sharp instrument offences data are submitted via an additional special collection. This special collection includes the offences: homicide; attempted murder; threats to kill; assault with injury and assault with intent to cause serious harm; robbery; rape; and sexual assault.
Police recorded crime statistics are based on data from 43 police forces in England and Wales. Data from Greater Manchester Police (GMP) are excluded. This force reviewed their recording of knife or sharp instrument offences in December 2017, which revealed that they were under-counting these offences. Following this review, there has been a sharp increase in the number of knife or sharp instrument offences recorded by GMP in January to March, April to June, and July to September 2018 compared with previous quarters. Previous data have not been revised and the data are therefore not comparable. Due to this, data from GMP have been excluded from the table.
Data on offences involving a knife or sharp instrument began to be collected in April 2009; however, comparable data are only available from the year ending March 2011. The Offences involving the use of weapons: data tables includes data on offences involving a knife or sharp instrument going back to the year ending March 2009.
Bedfordshire and Cambridgeshire Police forces have implemented new crime recording systems for offences involving the use of a knife or sharp instrument, therefore data for the latest year may be under-recorded. It is expected that this will be revised in future publications.