Section 3C Leave Explained: How Pending Applications Extend UK Permission

A valid in-time application extends a migrant's UK leave automatically until the Home Office decides it — the protection known as section 3C leave under the Immigration Act 1971. Two rule changes taking effect on 8 October 2026 narrowed how this safety net works. Practitioners advising clients on extensions, switching and fee waivers need to map every deadline from the original application date.

What is section 3C leave?

Section 3C(1) of the Immigration Act 1971 triggers the extension when three conditions are met: a person with limited leave applies to vary it, the application is made before the leave expires, and the leave expires without a decision. If the Home Office decides the application before the expiry date, section 3C leave never arises — even if the applicant then appeals.

Once triggered, the leave persists while any of these conditions holds:

• No decision has been made and the application is not withdrawn
• A decision has been made but the appeal deadline has not passed
• An appeal is pending
• An administrative review is pending or still within its time limit

Section 3C(3) adds a critical restriction: the leave lapses if the applicant leaves the UK. Paragraph 34K treats a pending application as withdrawn only when the person leaves the Common Travel Area. Someone travelling to Ireland, the Isle of Man or the Channel Islands could therefore lose 3C leave while their application remains live.

The leave keeps the character of the underlying permission. A spouse under Appendix FM who waits a year on 3C leave can count that year towards the five years needed for settlement. Asylum claims trigger 3C leave; further submissions do not.

Takeaway: in-time validity, not the eventual outcome, decides whether a client keeps lawful status.

What changed on 8 October 2026?

Two amendments to the immigration rules took effect on 8 October 2026. The first inserted sub-paragraph (2A) into paragraph 34BB: where a pending application is varied, the applicant must still submit biometrics within the period stated for the original application. Previously, an application could be validly varied without enrolling biometrics if done before the deadline. Because of the Supreme Court ruling in Mirza v Secretary of State for the Home Department [2016] UKSC 63, the initial application remains conditionally valid until the Home Office serves a notice of invalidity — so 3C leave still triggers, but ends when that notice arrives, without retroactive effect.

The second change tightened paragraph 34G(4) on fee waivers. The application following a fee waiver request must now be for permission on the same route the waiver was requested for — even if the waiver is refused. The explanatory memorandum says the change targets applicants who promise a human rights application, gain 3C leave, then vary to a non-human rights route such as Skilled Worker. An applicant can still vary later to a different route, provided the follow-on application matches the waiver route first.

Takeaway: after 8 October 2026, biometric deadlines and fee-waiver route-matching follow the original application, not the variation.

How do appeals interact with section 3C?

An in-time refusal with an appeal right starts a 14-day clock. Lodging the appeal within 14 days extends permission automatically until the appeal concludes. The protection runs through the Court of Appeal but no further — a Supreme Court appeal does not extend 3C leave. In Akinola v Upper Tribunal [2021] EWCA Civ 1308, the Court of Appeal held that a tribunal agreeing to hear an out-of-time appeal can resurrect 3C leave, though a gap remains between the missed deadline and the appeal date. Home Office guidance says caseworkers will normally use discretion to overlook that gap, at least in long residence applications.

Takeaway: the 14-day appeal deadline is the single most consequential date after refusal.

When do variations work — and when are they void?

Section 3C(5) allows varying a pending application before any decision. Paragraph 34GB deems the date of application to be the original date, preserving continuity of leave across multiple variations. But once the Home Office has decided, any new application made while 3C leave continues is void under section 3C(4) — and the applicant may learn this too late. Waiting until the 14 days expire makes the person an overstayer, but paragraph SUI 13.1 disregards that overstaying for a new application made within 14 days of the leave ending.

Two dates matter: 3C leave runs from the original application date, while the substantive requirements of the new route are assessed at the variation date — confirmed in Home Office variation guidance.

Takeaway: vary before the decision; after a refusal, wait out the appeal window instead of applying into the void.

What happens when decisions are withdrawn?

Case law forced the Home Office to accept that withdrawing a refusal resurrects 3C leave, or reverts it to its pre-decision form where leave was still running under a pending appeal. Judicially quashed decisions are treated as never made. Mere reconsideration, per Akinola, changes nothing. Withdrawal by the migrant ends 3C leave immediately.

The Home Office can also cancel 3C leave for breach of conditions or deception, with immediate effect — never a partial reduction. Cancellation is rare in practice. EVisas should show a pending in-time application, but the display remains spotty and subject to delays.

Takeaway: a withdrawn refusal restores the full toolkit — including the right to vary — until a fresh decision lands.