House-to-house enquiries
Investigation — Authorised Professional Practice
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 guidanceSource: College of Policing — Authorised Professional Practice · Crown copyright, licensed under Open Government Licence v3.0. Summary fetched 2026-06-27.