Guidance
Section 31 Immigration and Asylum Act 1999: caseworker guidance
Immigration staff guidance on considering the defence against criminal prosecution available to genuine asylum seekers.
- From:
-
UK Visas and Immigration
PublishedPublished:- 22 April 2014
- Last
updatedupdated: -
- 7 October 2026
Show all updates
-
Updated with new and updated links and housekeeping changes.
-
Updated
Seetoallincludeupdatesa new chapter on legal and judicial interpretation of Section 31, updated links and style changes. -
Updated guidance.
-
First published.
- 7 October 2026
Updates to this page
Documents
Section 31 Immigration and Asylum Act 1999: defence against prosecution
PDF, 229366 KB, 2526 pages
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format
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Details
UK Visas and Immigration guidance for staff on:
- general advice on prosecution in asylum cases
- referring cases to the Crown Prosecution Service for charging advice in cases where the suspect has also claimed asylum
- the defence section 31 of the Immigration and Asylum Act 1999 provides
- Article 31 of the Refugee Convention 1951 on which this defence is based
- the House of Lords judgment in the case of Asfaw, which set out how article 31 and section 31 are to be interpreted
- the procedures you must follow when dealing with section 31 cases
Published 22 April 2014
Last updated 9 January 2024
+ showSign allup updates
Updatedor toprint includethis a new chapter on legal and judicial interpretation of Section 31, updated links and style changes.
Updated guidance.
First published.
page
Section 31 Immigration and Asylum Act 1999: defence against prosecution
PDF, 229366 KB, 2526 pages
This file may not be suitable for users of assistive technology.
Request an accessible format.
format
If you use assistive technology (such as a screen reader) and need a version of this document in a more accessible format, please email alternativeformats@homeoffice.gov.uk. Please tell us what format you need. It will help us if you say what assistive technology you use.
Details
UK Visas and Immigration guidance for staff on:
- general advice on prosecution in asylum cases
- referring cases to the Crown Prosecution Service for charging advice in cases where the suspect has also claimed asylum
- the defence section 31 of the Immigration and Asylum Act 1999 provides
- Article 31 of the Refugee Convention 1951 on which this defence is based
- the House of Lords judgment in the case of Asfaw, which set out how article 31 and section 31 are to be interpreted
- the procedures you must follow when dealing with section 31 cases
Published 22 April 2014
Last updated 9 January 2024
+ showSign allup updates
Updatedor toprint includethis a new chapter on legal and judicial interpretation of Section 31, updated links and style changes.
Updated guidance.
First published.
page
Details
UK Visas and Immigration guidance for staff on:
- general advice on prosecution in asylum cases
- referring cases to the Crown Prosecution Service for charging advice in cases where the suspect has also claimed asylum
- the defence section 31 of the Immigration and Asylum Act 1999 provides
- Article 31 of the Refugee Convention 1951 on which this defence is based
- the House of Lords judgment in the case of Asfaw, which set out how article 31 and section 31 are to be interpreted
- the procedures you must follow when dealing with section 31 cases
+ showSign allup updates
Updatedor toprint includethis a new chapter on legal and judicial interpretation of Section 31, updated links and style changes.
Updated guidance.
First published.
UpdatedortoprintincludethisanewchapteronlegalandjudicialinterpretationofSection31,updatedlinksandstylechanges.Updatedguidance.Firstpublished.