The Home Office published the statement of Changes to the Immigration Rules – HC584 on 3 September 2026. The statement contains several changes to the immigration rules across different routes, including significant changes affecting Section 3C leave that will come into force on 8 October 2026. 

Two groups of people need to pay particular attention to the changes to Section 3C rules. People who request a fee waiver before submitting an immigration application and those who vary an existing application while waiting for a Home Office decision. 

Although Section 3C of the Immigration Act 1971 itself is not being abolished, the rules around when an application counts as valid and when it is treated as having been made are becoming stricter from 8 October 2026.

If your immigration permission is soon going to expire, understanding these changes may be particularly important because the date and validity of your application can determine whether you will have Section 3C leave engaged.

What is Section 3C leave?

Section 3C leave of the Immigration Act 1971 is intended to prevent you from becoming an overstayer while you are awaiting a decision on your application to extend or vary your permission and while any appeal or administrative review you are entitled to is pending, provided you make an in-time application. 

Section 3C leave does not protect your permission in the UK if you apply to extend or vary leave after your current permission has expired.

The conditions attached to your existing immigration permission generally continue during Section 3C leave. This can include the right to work in the UK, although the restrictions attached to your previous permission normally continue to apply.

What will change in Section 3C from 8 October 2026?

The Statement of Changes to the Immigration Rules, HC 584, introduces two significant procedural changes relevant to Section 3C leave. The September 2026 Statement of Changes contains some changes that affect applications and administrative reviews, but the basic operation of Section 3C remains as before.

The first change concerns fee waiver requests and the date on which a subsequent immigration application is treated as having been made.

The second change concerns biometric enrolment where an applicant varies an application that has already been submitted.

The Home Office states that these amendments are intended to address the use of the existing procedures by applicants seeking to extend their permission under Section 3C through human rights applications and subsequent variations.

Change 1: Fee waiver requests must correspond with the Immigration Route

One of the most important changes is an amendment to paragraph 34G(4) of the Immigration Rules, which sets out how to determine the date of an application following a fee waiver request.

The new rule at paragraph 34G(5) says that where you make a fee-waiver request and then submit an application for permission to stay on a different route from the route covered by the fee-waiver request, your application date is the date you submitted the actual application, rather than the earlier fee-waiver-request date. 

Where the fee waiver application is decided, you must also normally submit the completed application for permission to stay within 10 working days of receiving the fee waiver decision if you wish to benefit from the fee-waiver request date under paragraph 34G.

The rules also address circumstances in which you decide to pay for the immigration application before receiving the fee waiver decision. Again, your paid application must be for permission on the same route for which you requested fee waiver.

This is intended to prevent people from using a fee-waiver request for one type of application and then changing/“varying” it to another type of application in order to obtain or extend Section 3C leave.

Why this change?

We can understand it through a simple example.

Before 8 October 2026

Suppose:

• Your existing visa expires on 1 December. 

• Before it expires, you make a fee-waiver request for a Human Rights (HR) application. 

• Your fee-waiver request effectively allows the application date to be linked to the fee-waiver request, subject to the existing rules. 

• You then make the HR application. 

• Because it is made in time, Section 3C can potentially arise when your original leave expires. 

• While that application is pending, you vary it to a different, non-Human-Rights route. 

This is exactly the type of behaviour the Home Office says it is addressing. Its explanatory memorandum says applicants were making a Human Rights application and then varying it to a non-Human Rights application in an attempt to extend their permission under Section 3C.

This is the loophole the Home Office says people were using to extend Section 3C leave. The new rules specifically target it.

What happens if you apply under a different route?

From 8 October 2026, if you make a fee waiver request but subsequently submit an application for permission to stay under a different route, the application date will be the date on which you actually submitted that immigration application and not the earlier date of your fee waiver request.

This distinction can be critical where your existing immigration permission expires between these two dates.

Example

Your existing UK visa expires on 20 October.

Before your visa expires, you submit a fee waiver request in connection with a particular immigration route. However, you later decide to submit an application under a different route after your existing permission has expired.

Under the new rules, you cannot necessarily rely on the earlier fee waiver request date as the date of the later application. The relevant application date would instead be the date on which you submitted the application under the different route.

Because Section 3C protection depends on the circumstances in which you make an application, changing routes after making a fee waiver request could therefore have significant consequences for your immigration status.

Change 2: Varying an application will not reset the Biometrics deadline

This change is about the deadline for giving biometrics when you change (vary) an existing immigration application. The change takes effect on 8 October 2026 through new paragraph 34BB(2A) of the Immigration Rules. The Home Office says this confirms the existing position that there is one biometric enrolment period, even if the application is later varied.

From 8 October 2026, if you submit an application and later vary that application, you must still comply with the deadline for providing biometrics that applied to your original application.

In practical terms, varying an application does not provide a fresh biometric enrolment period.

This is an important change for anyone considering varying an outstanding immigration application.

Why is the Biometrics Rule changing?

We can understand it through a simple example.

Suppose:

• You make a UK visa application on 1 September. 

• The Home Office tells you to provide biometrics by 15 October. 

• Your application is capable of engaging Section 3C. 

• Before 15 October, you vary your application. 

Previously, there was a potential argument or practice that the variation could give you a new biometric period.

The concern was that someone could keep varying their application without enrolling biometrics, potentially delaying the time at which the application could be decided and extending Section 3C leave protection. The Home Office specifically says this was one of the practices it wants to stop.

What do these changes mean for Section 3C Leave?

The changes, effective from 8 October 2026, do not abolish Section 3C leave. It will continue to protect you if you make a valid, in-time application before your existing permission expires. 

However, the new rules make the timing and validity of the application more important. You should check:

• whether you applied before your visa expired;

• whether your fee waiver request and subsequent immigration application are for the same route;

• when the application is legally treated as made;

• whether the application is valid; and

• whether you provided biometrics within the required deadline.

If you do not meet these requirements, it could affect whether Section 3C leave applies, potentially leaving you without the protection of your previous immigration status.

Can you still vary an immigration application?

Even after the changes, you are not generally prohibited from varying an outstanding immigration application.

Variation remains possible in appropriate circumstances.

What changes is the effect of variation on the biometric timetable (as mentioned above). 

Therefore, if you are considering a variation, you should check the procedural requirements and deadlines attached to the original application before taking further steps.

What if you applied before 8 October 2026?

The implementation provisions in HC 584 contains transitional arrangements.

For the relevant changes taking effect on 8 October 2026, if you have applied for entry clearance, permission to enter or permission to stay, a claim, an ETA, or an administrative review before 8 October 2026, it will generally be decided under the Immigration Rules in force on 7 October 2026.

If your immigration permission expires close to 8 October 2026, you should avoid making assumptions about which version of the Immigration Rules applies to your circumstances.

Section 3C Leave and the Right to Work

If Section 3C applies, the conditions attached to your previous permission generally continue. This means you may usually continue working under the same restrictions as before. Section 3C does not give unlimited work rights.

Employers may need to complete the required right-to-work checks when an employee has an outstanding in-time application.

Why should you pay attention?

The changes are particularly important if you:

• need a fee waiver before applying; 

• have a visa that is approaching expiry; 

• plan to apply under a different route from the one in your fee-waiver request; 

• want to vary an existing application; 

• have not completed your biometrics; or 

• are relying on Section 3C leave while waiting for a decision. 

Therefore, you should pay close attention to application dates, validity, fee waivers and biometric deadlines, as these can affect your Section 3C leave and right to work.

Practical steps before 8 October 2026

In this section, you get practical advice to be taken before the new rules take effect on 8 October 2026.

1. You should carefully check your immigration position before submitting a fee waiver request, immigration application, or variation. 

For example, check:

• When does your current visa expire? 

• Which route are you applying under? 

• Do you need a fee waiver? 

• Are you already waiting for a decision on another application? 

• Are you thinking about changing that application?

2. Where a fee waiver is required, you should ensure that the route you have identified in the fee waiver request corresponds with the route under which you intend to make the subsequent application.

For example:

You make a fee-waiver request under the Parent route and

Your subsequent immigration application is under the Parent route

This matches.

But if:

You make a fee-waiver request under the Parent route and

Your subsequent immigration application is under the Skilled Worker route.

This does not match.

Under the new rules, if your subsequent application is for a different route than that in your fee waiver request, the application date for the different route will generally be the date on which you actually submitted it, rather than the earlier fee-waiver request date.

3. You should also keep a clear record of relevant dates. This includes the expiry date of your current immigration permission, the date of any fee waiver request, the date of the fee waiver request decision, the subsequent application submission date, and the deadline for biometric enrolment. This is important because a few days can make a significant difference to whether an application was made in time and whether Section 3C can apply.

4. Where you are applying for a variation of leave, you should not assume that the variation creates a new biometric deadline.

5. Most importantly, where Section 3C leave is necessary to maintain lawful immigration status, you should consider taking professional advice before taking a step that could affect the date or validity of your application.

Key Takeaway

From 8 October 2026, the Immigration Rules will tighten two procedures that can affect applicants relying on Section 3C leave.

The fee waiver request date will only be considered where the subsequent application is for the same route as sought in the fee waiver request. If the subsequent application is for a different route, the application to extend or vary existing permission will be considered to have been made on this date rather than the fee waiver request date.

At the same time, varying an existing immigration application will not restart the deadline for providing biometrics.

These changes may appear to be technical procedural amendments, but their consequences can be significant. For those having a soon-to-expire immigration permission, the timing, route and validity of an application can determine whether Section 3C leave protects their immigration status while the Home Office reaches a decision.

Disclaimer: This article provides you with general information about UK immigration law and the Immigration Rules and does not constitute legal advice. Immigration law is complex and individual circumstances vary. If you are uncertain about your immigration status or Section 3C leave, you should obtain advice relevant to your particular circumstances.