Section 3C Leave UK: What It Is and How It Works (2026)

What is Section 3C leave?

When you apply to extend your UK visa or for indefinite leave to remain before your current visa expires, your existing permission is automatically extended by Section 3C of the Immigration Act 1971. This is called Section 3C leave. It means you are lawfully in the UK while your application is being decided.

Without Section 3C leave, you would become an overstayer the moment your original visa expired, even if your application was submitted in good time. Section 3C leave prevents that from happening. It is not a new visa or a separate grant of leave. It is a statutory extension of your existing leave, bridging the gap between the expiry of your visa and the decision on your application.

Section 3C leave applies to all in-country applications submitted before the applicant's current leave expires. This includes applications for visa extensions and applications for indefinite leave to remain. If you submit your application on time, Section 3C leave activates automatically. You do not need to apply for it separately or notify the Home Office that you are relying on it.

The key requirement is that your application must be made before your current visa expires. If you submit even one day late, Section 3C leave does not apply, and you may be in the UK without lawful leave. Always submit your application before the expiry date shown on your Biometric Residence Permit (BRP).

What you can do on Section 3C leave

While on Section 3C leave, your conditions of stay are the same as they were under your previous visa. The rights and restrictions you had before your visa expired continue unchanged until a decision is made on your application.

Right to work

You can continue to work for the same employer under the same conditions as your original visa. If you were on a Skilled Worker visa, you can carry on working in the same sponsored role. Your employer does not need to take any action. Your right to work is maintained automatically through Section 3C leave.

Your employer can verify your right to work using the Home Office online checking service. When they run a check, the service will confirm that your right to work is valid and that your status is pending a decision. This gives your employer the reassurance they need without any additional paperwork.

Right to study

You can continue to study on Section 3C leave. If you were on a Student visa that permitted study, or a Skilled Worker visa that allowed concurrent study, those rights continue. Check your original visa conditions to confirm exactly what was permitted, as Section 3C leave mirrors those conditions.

NHS access

You can continue to access NHS services on Section 3C leave. You are lawfully in the UK and your entitlement to NHS treatment continues while your application is pending.

Remaining in the UK legally

You are lawfully present in the UK throughout Section 3C leave. You are not an overstayer. If the Home Office or any other authority queries your immigration status, you can confirm that your leave is extended under Section 3C of the Immigration Act 1971 pending the outcome of your application.

What you cannot do on Section 3C leave

The most important restriction on Section 3C leave is the travel restriction. This catches many applicants off guard.

You cannot travel outside the UK

If you leave the UK while on Section 3C leave, your Section 3C leave ends immediately. You cannot re-enter the UK on Section 3C leave. Your pending application does continue, but you will need a valid visa to return to the UK. If your original visa has expired, you may not have a basis to return until your application is decided and a new visa is issued (or you apply for an entry clearance separately).

This is the most critical rule about Section 3C leave. Always confirm that your application has been decided and that you have received your new leave before booking any international travel. Do not assume that a quick trip abroad is safe. Even a single day outside the UK terminates Section 3C leave.

If you have applied for indefinite leave to remain and are awaiting a decision, do not travel unless you have received confirmation that ILR has been granted. Check your decision letter and your BRP or digital immigration status before boarding any international flight.

You cannot exceed your original visa conditions

Section 3C leave extends your existing leave. It does not upgrade it. If your original visa had restrictions, for example a restriction on self-employment, those restrictions continue on Section 3C leave. You cannot use Section 3C leave as an opportunity to do things that were not permitted under your original visa.

How long does Section 3C leave last?

Section 3C leave lasts until one of the following happens:

• Your application is decided (granted or refused)
• You withdraw your application
• Your appeal rights are exhausted following a refusal
• You leave the UK (which terminates Section 3C leave immediately)

For indefinite leave to remain applications, how long Section 3C leave lasts depends on the processing service you choose. On standard processing, ILR applications typically take 6 to 8 weeks. On priority processing, a decision is usually made within 5 working days. On super priority, a decision is typically made by the end of the next working day.

If you are concerned about the length of time you will spend on Section 3C leave before your indefinite leave to remain application is decided, using priority or super priority processing shortens the period significantly. See our guide to the ILR priority service for a full breakdown of costs and whether it is worth it for your situation.

There is no fixed upper limit on Section 3C leave as long as your application remains pending. If your indefinite leave to remain application is still being considered after 6 months, your Section 3C leave continues. In practice, most ILR applications are decided well within this timeframe.

Section 3C leave and ILR applications

Section 3C leave is particularly relevant when applying for indefinite leave to remain. Many applicants submit their indefinite leave to remain application close to the expiry of their current visa, especially when they are aiming for the earliest possible submission date (up to 28 days before completing their qualifying period).

If your Skilled Worker visa, Spouse visa, or other leave expires while your indefinite leave to remain application is pending, Section 3C leave keeps you lawful in the UK. You remain lawfully resident, your right to work continues, and you are not in breach of your visa conditions.

Employer obligations

If you are a Skilled Worker visa holder, your employer does not need to take any action while you are on Section 3C leave awaiting an indefinite leave to remain decision. Your right to work continues automatically. Your employer can confirm this by running a check through the Home Office online checking service, which will show that your right to work is valid and pending a decision.

Once your indefinite leave to remain is granted, your employer should run a follow-up right to work check to update their records and confirm your new settled status.

Spouse and family route applicants

Section 3C leave works the same way for Spouse visa holders and other family route applicants applying for indefinite leave to remain. If your visa expires while your indefinite leave to remain application is being processed, Section 3C leave maintains your lawful status. Your conditions of leave, including any restrictions on work or public funds access, remain in place until the decision is made.

Continuous residence and Section 3C leave

Time on Section 3C leave counts toward your continuous residence qualifying period for indefinite leave to remain. This is an important and often misunderstood point.

If you need 5 years of continuous residence to qualify for indefinite leave to remain, the time you spend on Section 3C leave while waiting for your indefinite leave to remain decision counts as part of that continuous residence. For most indefinite leave to remain applicants, this is not a concern because the application is submitted at or after the 5-year mark, and the Section 3C period comes after the qualifying period is already complete.

However, if you applied for a visa extension (rather than for indefinite leave to remain) and Section 3C leave bridges the gap between your old visa and your new visa, that time also counts toward continuous residence. The Home Office treats Section 3C leave as a lawful period of continuous residence for the purposes of calculating qualifying periods for indefinite leave to remain.

This is confirmed by Home Office guidance on calculating continuous residence. Section 3C leave does not create a gap in your qualifying period, provided you do not leave the UK during that time.

The travel restriction matters here too

Because leaving the UK terminates Section 3C leave, any absence during Section 3C leave could also create a gap in your continuous residence. If you need your Section 3C period to count toward your indefinite leave to remain qualifying period, you must stay in the UK throughout. This is another reason why travelling abroad during Section 3C leave is strongly inadvisable.

What happens after Section 3C leave ends?

The outcome of your application determines what happens when Section 3C leave ends.

If your application is granted

Your Section 3C leave ends and your new leave begins. If you applied for indefinite leave to remain and it is granted, you become a settled person in the UK from the date of the decision. You will receive a new BRP or a digital immigration status confirming your indefinite leave to remain. Your employer should update their right to work records once your new status is confirmed.

If your application is refused

Your Section 3C leave ends when the refusal is issued. You typically have 14 days to leave the UK following a refusal of your indefinite leave to remain application. In some cases, you may have a right of appeal depending on the reason for the refusal and the type of application made.

If you receive a refusal, you should seek immigration advice immediately to understand your options. Depending on the route, you may be able to appeal, apply for an Administrative Review, or submit a fresh application if the refusal was based on a curable evidential gap.

Section 3D leave

If your indefinite leave to remain application is refused and you have a right of appeal, you may benefit from Section 3D leave under the Immigration Act 1971. Section 3D leave extends your lawful status while an in-country appeal is pending. It operates similarly to Section 3C leave but applies specifically in the appeal period following a refusal. Not all refused applications attract Section 3D leave, so confirm your specific position with an immigration adviser before taking any action.

How ILR Tracker helps

Applying for indefinite leave to remain involves careful timing, document preparation, and an understanding of your current immigration status. ILR Tracker helps you track your application timeline and understand where you are in the indefinite leave to remain process, including when you are likely to be on Section 3C leave and for how long.

Whether you are just starting your qualifying period or approaching your indefinite leave to remain application date, ILR Tracker gives you a clear picture of your status, your remaining absences, your document readiness, and your costs.

• ILR Eligibility Calculator - Find out when you can apply for indefinite leave to remain and how long your Section 3C leave period is likely to be based on your processing service choice.
• ILR processing times guide - Understand how long standard, priority, and super priority processing takes and what that means for your Section 3C leave period.
• ILR application process guide - A step-by-step walkthrough of the full indefinite leave to remain application, from eligibility check to decision.

Use the ILR Eligibility Calculator to check your earliest application date for indefinite leave to remain and start planning your application with confidence.