Guidance

Evidence in criminal investigations: caseworker guidance

Immigration staff guidance on evidence and how investigators deal with it during their investigation.

• From: UK Visas and Immigration
• Published: 21 August 2013
• Last updated: 20 February 2026
  Show all updates

  1. 20 February 2026

     Guidance updated with minor housekeeping changes, updated links and additions regarding Body Worn Video (BWV).

  2. 6 July 2020

     Updated links within guidance.

  3. 2 December 2019

     Guidance updated with links to college of policing guidance.

  4. 24 February 2014

     Updated.

  5. 21 August 2013

     First published.

Documents

Evidence in criminal investigations (accessible)

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Evidence in criminal investigations

PDF, 408 KB, 40 pages

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Details

UK Visas and Immigration guidance for staff on:

• a definition of evidence
• admissibility
• exclusions, including hearsay
• evidence of bad character
• disclosure and retaining evidence