COVID Absences and British Citizenship Applications

Which years are actually counted

The residence requirement is measured over the 5 years ending on the day the Home Office receives your application. You must have been in the UK on the first day of that period, and you must not have been outside the UK for more than 450 days across the 5 years, or more than 90 days in the final 12 months.

That window moves with your application date. An application made in 2026 is measured from 2021 onwards, so absences from March 2020 to mid-2021, when travel was most restricted, are already outside the period being counted. Only absences from late 2021 onwards can still fall inside it.

If you are married to or the civil partner of a British citizen, the period is 3 years rather than 5, and the limit is 270 days rather than 450. A 3-year period for a 2026 application starts in 2023, which is after the pandemic travel restrictions ended.

How days abroad are counted

The naturalisation caseworker guidance says caseworkers must count only whole days of absence, and must not count the dates of departure and arrival. Its own example: someone who left the UK on 22 September and returned on 23 September is not treated as having been absent.

A long stranded trip therefore counts for fewer days than a simple date subtraction suggests, by two days per trip.

What the guidance says about the pandemic

The caseworker guidance sets out when discretion may be used for absences over the limit. Two of its provisions name a pandemic:

• Where the total absence over the qualifying period is between 480 and 900 days (or between 300 and 540 days on the 3-year route), discretion may be used if the applicant has established their home, employment, family and finances in the UK and one of a listed set of reasons applies. One of those reasons is that “the excess absences were because the applicant was unable to return to the UK because of global pandemic”.
• For absences in the final 12 months of more than 100 but no more than 180 days, where the requirement over the full period is not met, discretion may be used if the applicant has made the UK their home and the absence is justified by Crown service or by compelling occupational or compassionate reasons, “including inability to travel because of a global pandemic”.

The guidance sets no cut-off date for these provisions and does not say that some months of the pandemic are treated more favourably than others.

The published thresholds

Over the whole qualifying period, the guidance tells caseworkers that:

• Where the limit is exceeded by 30 days or less, they must use discretion, unless the application fails on other grounds.
• Between 480 and 900 days on the 5-year route, or 300 and 540 days on the 3-year route, discretion is only considered where the conditions above are met.
• Beyond 900 days (or 540), it says discretion is “highly unlikely” to be appropriate outside Crown service, and the application would normally be refused with an invitation to apply again later.

For the final 12 months, the guidance says that:

• Total absences of 100 days or less: use discretion.
• Between 100 and 180 days: discretion depends on whether the requirement over the full period is met, and on the strength of the applicant’s links to the UK.
• More than 180 days: only where the applicant has made the UK their home, and, if the full-period requirement is not met, only in exceptional circumstances such as Crown service.

What evidence to provide

• Flight cancellation emails showing you tried to return
• Border closure announcements from the relevant country
• UK government travel advice in effect during your absence
• Rebooking confirmations showing attempts to return earlier
• A covering letter setting out the timeline

Your covering letter should say:

1. When you left the UK and why
2. When you intended to return
3. What prevented your return
4. What you did to return sooner
5. When you actually returned
6. How many extra days the disruption added

Absences not related to the pandemic

The limits apply to your total absence, whatever the reason for each trip. A caseworker looks at the total first and then at the reasons for the part that goes over. For absences over the limit for other reasons, see our guide on discretion for excess absences.

Waiting rather than explaining

Because the 5 years counted end on the day the Home Office receives the application, an absence drops out of the count once it is more than 5 years old. Use our residence calculator to see where a given application date puts you.

For the full list of citizenship requirements, see our 2026 requirements guide.

Further reading

The Home Office collection of coronavirus immigration guidance was withdrawn on 10 February 2026 and is no longer updated. The current source for how absences are treated is the naturalisation caseworker guidance. See also our guides on referees, the ceremony, passports, and English for citizenship.

You may also find our Home Office contact guide and eVisa guide helpful.

Questions and answers