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Gun Crime

Major Investigation and Public Protection — Authorised Professional Practice

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Summary

Gun crime encompasses offenses such as violence against the person, robbery, burglary, and sexual offenses, where firearms are involved. A firearm is considered involved in an offense if it is fired, used as a blunt weapon, or brandished as a threat. The presence of a firearm, whether real or imitation, should be perceived by the victim; incidents are counted even when the firearm is concealed as long as there is evidence that the suspect intended to create that impression. This definition, termed the Crimsec 30 definition, is crucial for police officers investigating gun-related offenses. The page also offers resources and references related to gun crime, emphasizing that this material should be used alongside existing guidelines on armed policing and major investigations.

Key principles

  • 1Gun crime includes offenses where firearms are present.
  • 2Firearms can be real, fake, or air weapons.
  • 3Victim perception of firearms counts even if concealed.
  • 4The definition includes a range of serious offenses.
  • 5Resources provided are to supplement existing APP guidelines.

Defined terms

gun crime
Crime (violence against the person, robbery, burglary and sexual offences) in which guns are taken to be involved in an offence. A gun is taken to be involved in an offence if it is fired, used as a blunt instrument, or used as a threat.

This is a brief, factual summary. The full APP guidance — including operational detail, statutory references and case studies — lives on the College of Policing website. APP is the authoritative source for UK policing practice.

Read the full APP guidance

Source: College of Policing — Authorised Professional Practice · Crown copyright, licensed under Open Government Licence v3.0. Summary fetched 2026-06-27.