- Overstaying a UK visa, remaining beyond the visa expiry date without a valid extension, is an immigration offence.
- Overstays of more than 30 days carry a mandatory re-entry ban of 1 to 10 years depending on the length of overstay.
- Overstays of over 12 months result in a 10-year ban from re-entering the UK.
- A 28-day grace period applies after a visa refusal or curtailment in some circumstances, but not after the expiry of a standard visa.
- Voluntary departure before enforcement action is taken is treated more favourably than removal, but the overstay record remains.
Last reviewed: 13 May 2026
A UK visa overstay occurs when a person remains in the United Kingdom beyond the expiry date or the permitted period of leave stated in their visa, without having obtained a valid extension or new leave to remain before that date.
What Is a UK Visa Overstay
The leave to remain expiry date is stamped in the passport or shown on the Biometric Residence Permit (BRP). From the day after this date, any continued presence in the UK is unlawful. The Home Office refers to this as being an "overstayer" and it is a criminal offence under Section 24 of the Immigration Act 1971. Overstaying is distinct from applying for an extension before the visa expires (which maintains lawful status during the application's processing period under "3C leave") and remaining in the UK while an appeal or administrative review is pending under existing statutory provisions.
The Re-Entry Ban Structure
The UK operates a tiered re-entry ban system based on the length of overstay. The ban applies when the person leaves the UK after overstaying, regardless of whether they were removed or departed voluntarily. Under 30 days: no mandatory ban (but overstay is recorded). 30 days to 6 months: 1-year ban. 6 months to 12 months: 5-year ban. Over 12 months: 10-year ban.
These bans apply to all UK visa applications made during the ban period. Any application submitted during the ban period will be refused under the mandatory refusal grounds in Part 9 of the Immigration Rules. The ban is calculated from the date of departure from the UK, not the date the overstay began.
Overstays Under 30 Days: The Grace Period Misconception
There is a common misconception that overstays under 30 days carry no consequences. While there is no mandatory ban triggered by an overstay of under 30 days, this does not mean there are no consequences. The overstay is recorded on the immigration database. It must be declared in all future UK visa applications. Failure to declare it is treated as deception under Paragraph 320 of the Immigration Rules. A caseworker can refuse a future application on discretionary grounds even for a short overstay, particularly if the applicant has a pattern of overstaying or if the current application raises other credibility concerns.
Criminal Liability for Overstaying
Overstaying a UK visa is a criminal offence under Section 24 of the Immigration Act 1971. In practice, criminal prosecution for simple overstaying (as opposed to working illegally, using false documents, or repeated offending) is relatively rare. The Home Office typically pursues the civil immigration enforcement route, removal and banning, rather than criminal prosecution for first-time overstayers. However, criminal liability exists and becomes more likely where the overstay is combined with illegal working, the person has used deception to prolong their stay, the person has previously been removed and re-entered illegally, or the overstay involves significant evasion of detection. A conviction under Section 24 can itself result in imprisonment of up to six months, a fine, or both.
3C Leave: Maintaining Lawful Status
Section 3C of the Immigration Act 1971 provides that where a person applies for an extension of leave before their current leave expires, their existing leave is automatically extended until the application is decided (or any appeal or administrative review is exhausted). This is known as "3C leave" and is critical to understand. It only applies if the extension application was submitted before the visa expiry date. It does not apply if the application was submitted after the visa expired, even by one day. 3C leave maintains lawful status and means the person is not technically overstaying during the decision period. A person on 3C leave should not travel outside the UK unless they hold entry clearance for return.
Voluntary Departure vs Removal
Leaving the UK voluntarily after an overstay is treated more favourably than being removed by the Home Office, but the overstay remains on record and the re-entry ban applies in both cases. Voluntary departure: the overstayer leaves of their own accord without enforcement action; the ban is calculated from the departure date; no formal removal record is created; future applications may treat the voluntary departure as a mitigating factor.
Enforcement removal: the Home Office detains and removes the overstayer; a formal removal record is created; the ban is calculated from the removal date; the formal removal record creates additional barriers to future applications beyond the standard ban; removal costs may be reclaimed from the individual in some circumstances. Leaving voluntarily as soon as an overstay situation is identified is consistently treated as the most favourable outcome.
How to Regularise an Overstay
In limited circumstances, it may be possible to regularise an overstay without leaving the UK. These circumstances are narrow and legal advice is essential. Routes that may regularise status: applying for leave on human rights grounds (Article 8) from within the UK if a genuine Article 8 claim exists; asylum application if the person faces persecution in their home country; leave outside the rules (LOTR) in exceptional compassionate circumstances at the Home Office's discretion. None of these routes are guaranteed to succeed, and making an application does not automatically suspend removal action.
What does not regularise an overstay: continuing to work or study while overstaying; marriage to a British citizen (which can strengthen an Article 8 claim but is not automatic leave); long residence alone (the long residence rules require continuous lawful residence).
Declaring Overstays in Future Applications
All overstays, including short ones, must be declared in every future UK visa application. The declaration requirement also applies to visa applications in other countries, many of which ask specifically about UK immigration history. The declaration must be accurate: the approximate dates of overstay, the length of the overstay, and the reason for the overstay if applicable. False or incomplete declarations are treated as deception. A finding of deception triggers a mandatory refusal under Part 9 of the Immigration Rules and can result in a ban of up to 10 years even if the original overstay would only have resulted in a shorter ban.
Frequently Asked Questions
What happens if you overstay by a few days?
An overstay of under 30 days does not trigger a mandatory re-entry ban, but it is recorded on the immigration database and must be declared in all future UK visa applications. Future applications can still be refused on discretionary grounds even for a short overstay.
How long is the UK re-entry ban for overstaying?
The ban depends on the length of overstay: 1 year for overstays of 30 days to 6 months, 5 years for 6 months to 12 months, and 10 years for overstays exceeding 12 months. The ban runs from the date of departure from the UK.
Can you apply for a UK visa if you have overstayed before?
You can apply, but you must declare the previous overstay. If you are within an active ban period, the application will be refused. Outside the ban period, the overstay record will be visible to the caseworker and may affect the outcome.
Is it a crime to overstay a UK visa?
Yes. Overstaying is a criminal offence under Section 24 of the Immigration Act 1971. While prosecution for simple overstaying is relatively uncommon, it becomes more likely where the overstay is combined with illegal working, deception, or repeated offending.
What is 3C leave?
3C leave is a legal provision that automatically extends a person's leave while a timely extension application is being decided. It only applies if the extension application was submitted before the existing leave expired. It prevents the person from being technically overstaying during the decision period.
How We Verified This Article
This article draws on the Immigration Act 1971 (Section 24 and Section 3C), Part 9 of the Immigration Rules (Grounds for Refusal), Home Office enforcement guidance on overstaying published on GOV.UK, and OISC adviser guidance current as of May 2026.
