Briefing on what to do when UK visa application is invalid

3 June 2026

Vanessa Ganguin Immigration Law Senior Associate Alex Piletska has written a new briefing for immigration practitioners’ resource Free Movement on when UK immigration applications are invalid. She examines the guidelines around invalidity, when invalidity can be fixed, when an invalid application cannot be remedied, how invalidity affects varying a visa application, what to do if the Home Office has incorrectly invalidated an application and what best practice should be for immigration lawyers.

Invalidity is different from eligibility. Validity rules can be found in Paragraph 34 of the UK Immigration Rules. The validity requirements that are more likely to catch people out are category-specific ones for out of country applications.

In some cases where a validity requirement is not met, the Home Office may write to the applicant and give them a limited opportunity to fix a problem, such as using the wrong form to apply for permission to stay or not submitting biometric data in time for an application, but there are many reasons why an application is invalid which cannot be amended.

You can read Alex’s full briefing below.

Alex Piletska is a Senior Associate at Vanessa Ganguin Immigration Law. She specialises in a wide range of private immigration, including complex human rights cases, skilled migration and everything in between. She is highly-regarded in legal guides and cofounded the award-winning Ukraine Advice Project which helped more than 4,000 families escaping the conflict.

Alex Piletska is particularly renowned for her talent in complex nationality cases, Adult Dependent Relative applications, Judicial Review and technical procedural issues affecting people on various UK immigration routes, such as validity and variations.

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