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House-to-house enquiries

Investigation — Authorised Professional Practice

All topics

Summary

House-to-house enquiries are an integral part of many investigations, particularly in residential areas. These enquiries can be conducted by individual officers or small teams, generating a significant amount of information that must be accurately documented and followed up. The strategy involves identifying suspects and witnesses, gathering intelligence, and providing reassurance to the community. The process requires clear objectives and a systematic approach, utilizing tools such as questionnaires and aides-memoires to ensure relevant data is collected effectively. Enquiries can be planned or fast-tracked, depending on the circumstances, and need to take into account various parameters including location, time, and subject characteristics.

Key principles

  • 1Organised and methodical approach required
  • 2Utilise questionnaires to gather relevant information
  • 3Conduct enquiries to identify suspects and witnesses
  • 4Provide public reassurance during the enquiries
  • 5Set clear location, time, and subject parameters
  • 6Involve community leaders when appropriate
  • 7Maintain accurate records and documentation

Defined terms

SIO
Senior Investigating Officer
PolSA
Police Safer Neighbourhoods Officer
BIA
Behavioural Investigative Advisor
MIR
Major Incident Room
LEASH
Mnemonic for identifying significant locations
LEAVERS
Mnemonic for identifying people relevant to enquiries

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.